From f4587886ac158f4fd1009baa8a6dd766cecbef0d Mon Sep 17 00:00:00 2001 From: Brian Rogers Date: Thu, 19 Dec 2024 09:44:35 -0700 Subject: [PATCH] adding stuff from pi --- Makefile | 22 + bin/Debug/gmon.out | Bin 0 -> 5957 bytes bin/Debug/tempRecord | Bin 0 -> 38788 bytes build/Debug/.gitignore | 2 + build/Release/.gitignore | 2 + gmon.out | Bin 0 -> 5957 bytes readings_2024-02-26.json | 1 + src/bme280/bme280.c | 1273 ++++++++++++++++++++++++++++++++++++++ src/bme280/bme280.h | 240 +++++++ src/bme280/bme280_defs.h | 373 +++++++++++ src/main.c | 247 ++++++++ src/second.c | 125 ++++ 12 files changed, 2285 insertions(+) create mode 100644 Makefile create mode 100644 bin/Debug/gmon.out create mode 100755 bin/Debug/tempRecord create mode 100644 build/Debug/.gitignore create mode 100644 build/Release/.gitignore create mode 100644 gmon.out create mode 100644 readings_2024-02-26.json create mode 100644 src/bme280/bme280.c create mode 100644 src/bme280/bme280.h create mode 100644 src/bme280/bme280_defs.h create mode 100644 src/main.c create mode 100644 src/second.c diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..d3e2d35 --- /dev/null +++ b/Makefile @@ -0,0 +1,22 @@ +STANDARD := gnu99 +DEBUG_DIR := build/Debug +BIN_DEBUG_DIR := bin/Debug +RELEASE_DIR := build/Release +BIN_RELEASE_DIR := bin/Release +CFLAGS += $(shell pkg-config --cflags json-c) +LDFLAGS += $(shell pkg-config --libs json-c) + +debug: + gcc -Wall -fPIC -pg -g -c src/bme280/bme280.c -o $(DEBUG_DIR)/bme280.o -std=${STANDARD} ${LDFLAGS} + gcc -Wall -fPIC -pg -g -c src/main.c -o $(DEBUG_DIR)/main.o -std=${STANDARD} ${LDFLAGS} + gcc -Wall -fPIC -pg -g -o $(BIN_DEBUG_DIR)/tempRecord $(DEBUG_DIR)/main.o $(DEBUG_DIR)/bme280.o -std=${STANDARD} ${LDFLAGS} + +release: + gcc -Wall -fPIC -O2 -c src/bme280/bme280.c -o $(RELEASE_DIR)/bme280.o -std=${STANDARD} ${LDFLAGS} + gcc -Wall -fPIC -O2 -c src/main.c -o $(RELEASE_DIR)/main.o -std=${STANDARD} ${LDFLAGS} + gcc -Wall -fPIC -O2 -o $(BIN_RELEASE_DIR)/tempRecord $(RELEASE_DIR)/main.o $(RELEASE_DIR)/bme280.o -std=${STANDARD} ${LDFLAGS} + + +.PHONY clean: + rm -rf -v !\(.gitignore\) $(DEBUG_DIR)/* + rm -rf -v !\(.gitignore\) $(RELEASE_DIR)/* diff --git a/bin/Debug/gmon.out b/bin/Debug/gmon.out new file mode 100644 index 0000000000000000000000000000000000000000..7b8ad7bf715905525c14480cafc9b2df4cf7ec6e GIT binary patch literal 5957 zcmeI0t4;$!6ozLIq}-BnFHm3!ge;*6g;Z1^Dl1o1AP}2SLJe(`A}T8omB@-dz{(Yf z3Pj}!WCgMUQBi?FAo+KC=CI)zPLoOJ+jE&SUsmnIW23Iszu#a%EB8vP?4nXt#9H@v zje50Zvv^}4$iEm617bi7hygJm2E>3E5CdXB42S_SAO^&M7!U(uKu0TDeJ*Jge{s}5 zfWk6?x29Eho1g}8cL+Lw(Jny`FhHGY5Uy*L+aMSN-d73AczS(F&;%4W2?9XHb{hix zbBf#`C9c6YPo)FE6J|4z*_uV>3cv3%2q~xc~qF literal 0 HcmV?d00001 diff --git a/bin/Debug/tempRecord b/bin/Debug/tempRecord new file mode 100755 index 0000000000000000000000000000000000000000..f713ab210b6cd1161ddb14e91925355e2c6dcbc9 GIT binary patch literal 38788 zcmeHw3w%`7wf8U%_E)d9)mrOKuu+RjsoK_BuYCXieoRir(8s;s z_q*Tk_j%xC@3q(3Yp=cb+UxAI_Bm&^U(mYJaU5X}kEjuZ4(2$b0crlH@W&@)gNTS6 z;7$|Mi63|y$hR9Db^1ZV(`U{sq^#QjN}dr^;A!z*;MM|Oi*|XI1LjFQiq(n4v*wDI<;le4ZY4-iv}GIN2_1d+;{|dJmL0>k_fKiJrcpEpyukd%HVpll`>|fKoKYNU4Jh*IX*T z{H2<+_ns5Kt^Nmt;om>n`@yxJ{pr2r!*WGs>`f(&tG}>q$yd)R$P0e!pC=vL{LX{3N){CsZ}oq=^`Ax{!nlLFu}1`%`K|)? zWsXH6jo>WFz<;|%)A zfJ3>C*nqSUBm8^@{+0~*cNy@S4E`U?z(17%Kbrv$WWYbqfZHF-D-*t5Q&Xm3aVP#+}j5JSmCJU$>guNv%0q55FFJtjcio>1(fQK&&_VQ4_0 zRwCZs$6OQ+t;49Nx4oxNB>SvXgK?^_V@rFqJr&>5lM*0hXXkd%z})zhg8$CY0|{`p6VQE@lcRy@V;8ZzEGU>lI9=2+_ne zC`2n$IR7@L({TM{3dg>VDSB`P(@8>XV45vNj42#?H`6>J5=@J5-D6rIM2hKDA+|7` zF2pvbrwMT#Q#k({nC9b}(Kz=vJB4`Jf87Hw`G)6?`iA$828M4N_Mdog^vIb|()VsV zTJ*zPj~@Bs;Zd7E=*k~(<@dYt`&{|Yx$-+*`I}t%>ss|R8S3cs(m$~vGSKjZ+3s?TlKaA<>ge(7&D?jYYKkdpt&isLW&x_%G z&-+4O_;o>K--s`QaS?MzYxeCOt**cAsCVBdh9gJzj^-b^<3-<*xua$Edq=(Xcf43E z_Kpg1$BPf1Jo)l5oMMq9Zo(YchjTy96`%`YyuJ0e4KHZ~ZRGY*U*m1VSoJ&~y6%Cp zIg!1ib3%JZ9f9`6j!}=;{h|}v{o-xlrP=@-YJA|OV>#m39`Js0p(DNszW3m~6=yN{ z7lQ}+dm^{LNWN1});Yr`PaeAtw0l5P1{ujqh)YI@3+cR~D>_*>au{~WlSegZt09l5 zUpjpE)O{n%!yg@fICS8z)?**b8d>j2wxjw68D4hk(XaYPN72`pj-ZVfAeU;WY3^@) z2R?Z;^!VzdoCBW%ZAj#eE`e<9i#N1yBqS&sTHZn&6KKOL zFlLXp92GY`@Y296v|#xA4gYH_pGf7Xr+(kaj`{mWJoU?mz4Msv7~X-DJkA9jMla3F zcVI4T#M9wDC} z|A@!iSUvM-Y|P}h*2Pbf-})PmU$FJS1iV=P^2QMQ<#)-m0`-d{d86LQz7gnQq@ccK z6gnRXAZ0%f%xf8G!nn}pXp7$Z-7kvz+eZVTmZMHY>unZz)VOd5rmY_-4poj)A0zKT zA4b1^=r;uYZdl+5_%C5)DK@&920m3TSxSs7lZ-3}Axp~0a&X@I5vP8~QMU1lZet`= zpEvq*v>oDDM;;kvN}7Wxt1|LD0@?;EtGInM%?JGtf#wb1X*c&xAor74)KYG18*N7J z*Fjqk8>>fqo~^gP%5l8Tj0?-2jyy8*#B$b2Sm%!V)WzD>3c^#k=uqN zp?%MP3b>u7{D78As51bp9Y7_)(sD9gjRvP{{)X&6J~ zl?|A@wE;i$5H_@r(*~+rMhfyOU!4yg)DP$9z`QZvmJb^(SNtnqJ>5mqmO&E&E(ksm z7frp3hPIv!To^Q^E}BpV%{%`IyMXU|Tg@HqU+G8RM0p71FJ+X!hVmlt^tgCFmO=9y z(Cozc`ca?$Is$&bMj6vGQ_s#@%Fp%+EkDq2v;1Hy51V?qF8l@;{@cJ;q5esv)*soq z(ulb-2WJFlKF(^KKAb18_IeEG5}Xm7ew?phT{evKNt}mqUWaoFPU{nDj88a@c4}Y` zHO6MngFj+k!hV*RJZ<+}llLKizRAudZ)aXV!PGHU0et`nwMO zy&{x1TD??XFQ{i;PcUzvFShmsez$TAV9!2PhU-aW$LO1Ctn{^o^AgMVuUr9rp|3}I zy`g3%f)xX@-Paxe4IWK{n)Hi*h zwyWJQwj!T0yql0unEVRl*Bag6_CU44e*TI&f}BmRb}GT&(hg}~r`8(wT3A09@w90| zT~{8D;I0S`=>XEt!K4o0+>LV^U~6A?y>l7((mzYc%(11evypN>pP8*?qV4<)GO_=2 z;pbqc$Ff7X1{<4v9QvDW+hnQ41f z#`cP!i>grGXawWJ@#eaLYZtB;=u2MD8b3yC6Srj*5oKSL?GlWM$Sr|9JC+QO+>Mhw zi1#<%u2M(*RIL?CLhDDXB9)^JT%Vy0JMQEOnRC66*_KgeJI;2#G#Hs*cw4U-8X)%) z$W3_{qRoYnAy@OdBNt=JvL)!lcP8jV6Z*h41KYj;Z8weQoe-uml@MdYWW3Jwwe=xE$(Y|ASy z9yxyURy7E$BcuAc4hL`#?(A@jZNm<+K#c|*cM}KIF`kbeWTI8 z+vX8Ku7DjMwQJq$CYVbI8-PZS1#OJHP8c8S<`n^50qE#I=!efR?Qsm@5^}lbS`ylE zlr+WACv6Kc6(y&e59h1pQwBa|e*>RiWbkp%wM^YChHmJ0IM*jnpcDFmeB)zyO?wS8 z6q+@jTTYBo1%1Pk$d04=(4k%1t$}WSmNDNmWhk9seBN^T9oDDb;G4&dkM-4VIVKvP znOKT|d(^CDC@*y-Fo(VM z-lIv(Lj_|l{xx0w$h18bbAUc~6;gYh`0505z-L$R8j*!HJKLZs?qnFNZ#mV$UvXNdo`x{NUJdZ0_|`e;KS+1Spz+NYy$akp{S^)E-=0b zrR9boE7w(i)c+%7y2>T1wFBB@75qlXWoMWtxM!^#EruVf0*}dJ{b)7j)f(3vrca{p zu=e5}V|yQNuR(+8C+|sk9pZh78mmR{|L7lK`b$-YxB>gD?p;jTX(&t9b4(GZfDHMd z_eQQ)_pwZ?$PYSU9k1o%;;q+6uniY)`FHT9&dEE=@@^QDG24`}A8y$w6UT|y>~S#* z6E`U{*SR^+3+=uPV_yXxv<3Q9jy?5Co99^8V=O5H^H{6osy-us2FpY2KjT3Ao_{m) z@Q52ekqJ+G82s0dW@Da^mn1LL=e&CYey$O*5vBXBJ6Ftp#CwdcGx0YAPx~in7!M_X=oI)F z6Ucu_Mmui#t>3fp%m&EMxKTdlxF33^k4x5n{e`OfN1jhczW##pWxQ@7KB~)UPhWol zYfJ_6TBhpZT9)ZcGTSOYMO#y8qoyq%+S;M~>3^*aaf&wF{ZW4W|3H66|1`1g-2HL> zoBjFG1Z}7}4ZU-0JkUG!kNASRJ}p=M`t1vD8m{@>Gx(`NIk^Vl`j@`Iu75Ai;K6xIxr(tSaj$*Vo(=r`Co|?B=_Tpmmw4@?41mY^-ihS0 z{=EfqS^v&^2d*!tVy$%f1ZySLj*I4r3>tSkc7ED>+IeWF9{q2CFW~h$f%p#N-pt34 zw{dSD){i^S&OY9?_2BWQ^?P5Hn{GVb0DT>(|LKS-Uw`oUik7{v`nG=T_=Q^+9naaC z_bTzP8T^Z=m$M1`CtGJKTs?4Zo@btd=K>ecJn+m@doZ(9+i$pdlP~dXL(xEn?{EFj z<2%nNRkYPu_oQ)~79F3;_O^cfxEFQ2s3XDm`!0&R+h?MEgLvcg68|qe{e1lZvGpK4Rc|k*+u*8ZS-n6D=|8uphp8 z^5w-CnqORvUh(eZgMnW)>pX19pNzRPa0E=}7l*S*%pPi@1>Qnj5n{?^#* zut`HEJz>&_vFj6N-?QGp2Q>c5gNAO{l-DU%r*LdmER|huycq?$;W-=RJhA z`zMW0S_>Ve?H)R6ciB5}@3{1Lg|d%X$60=2{+Ru*Yk|MQ-mA9r8EKns1D)U62ga86 zPCKBDlE+(?H*l-WxC9NZ3fF#XS1X8vpS1I68RfuS3LDxdT(X?yrp5dS)8;Yv7MeOm zs8axY463;R{QAmQixdszo_U;j%2sCEhinQDUNeo1)4_}VC;}hWu{PxPZSZ|*8?nC6 z?Hge?Y2Wx4?dHg9X1v=>`nX9?m~>}`z0iIxZ?xBE8;iL4k9tq$Dzm<(Eih(0QT!nv zK0bu=UhKt1)cPK=Oz5Nn*Rl_pHM@JAfmkZy$%sXS^z|8r`|=dij=O#~>aUrgKJF{V z)qf84Gh-|EdTV12m!d!Ry3TvZa@Rd1?rV;5--vs2h#?F!&zLLYt?C{TFH3a0ao5(a}7G(B`mM@r3J<-IjGR>W3J0)<&N_C@>8@kfvFUo?#kK1?Bsh2ZBpRh-#*4gQLM!tilPTmA{a!*m`ep9Dl zf;#!9sB_rV2~JQaaEdw)nmXYL>R|tI!u}kXb}Shqj{cEsZ@G zy>WiBoze;FOgcrK`%Im3>~YXG$|kr6v9@dH+BJU|i|%g*&$=!^Gkh`XqGANRNTOc8x9 z{YL@(M?l9_h8bVtJr1rHxi$udYlC_&OZgh*XU4}F?fBUC3eg^YA#H)Yu>X|HJg>ck zxrahH-@uIH5N0gfv|V9iz3#TH4|c~mPh2?nH(~($yc_n8Hnr^?&DwC=ux!J*Vdb!M z9i9i6`p0|Gk=f${^YTJc<7qXe)73bJ~IoaE6&AR8 zN#~msdR67Pw^J#uRVu|Jsw&0agGx^`Deg@bJkzAmhk_ArS1DqkD#f}`rAX8b05sMi#ou{t{A5;Edb(0DLA8J&@= z<+IByTiKI{M>_ilBdPva`_++He>@rK>rX}SjB_$IEwUVSQm9i~TN@Eqfqv_?;DgQW zmF=h)L#+s(*N)6c0@o2wBzuOEqO-kwFy7Z4$5YZ`pgoDFuJP=4PXdof_KpsS6>0B_)loI=iA`)L znP}e}uf=;Mxshe7FPOi$KC-H>Cl$Fko*YV~B0b5oXT+%X|L5%I@RKLE)7IWQ-qXN) z8hB3w?`hyY4ZNp;_cZXH2LAukKqSu*Z{qz~t_S(mj>V4)f&U4ha2=*5`q6Rdtpxho8E?<6jq~_xGn_V~=on$0`?ztSrBiFZvV7O#Z{8n){yZ}Id{12eQQ$0qpkZn5VP>2 z^x!1+?=&ZupERfzf%ik(Wm$6^e;AqI3It`cYMmScB8XQVMOM9r{J|eWg<1186oQ%g z9t4K~y{gP=bNs!mU&y8|c5*4O2$m6At05onvIE~HQ&(2!3A zT0y!ZYlGu|g-qMYW}`-mpoe0_G~@&?BAZU9s09uBfR23$i)$M3^2Udr{6P z5?}aF1kO}|Kl~0F%U-O2{P63jn0=N4LSZ})EV9p5Kymmyu+Bb50cGJrL_9_J|3IB}kH0K=zL1Xw!1XdT)#jFTVA-6R_dZ?A*#bj`i|8wAWVfYvsyf3&P zKvNjcdyDML3;qoRZQ*YbSYP^0VAh5Cm`U~(g=RP7EA5ZIt(ON18_*yw*0$$;?Q0A2aB%V`6JL)6>sK+(lul;yh-1X(^Jis_{& zR|)+IOSc0k`UZGs`M$>Nu%i7o{wmrhkx{g>K)?ac^1Y_&jpDC&9tv`@3!g$>QPbEI z^;9t_)hp)YX8Z3%QFtlna&wGPR6&m1Tm|^TypZJPDZn2tCt1D%^20%ho?D=RQ22uc z0tzS&Uk=6R1{F{iK8@T$3aAPnB3W1gk#GYs#rcn-h3fDowo?*(1})TxqQ?Pc`6ycH zqp0GPNZPCP^7>nL95l|es)W~Fek;e>Q-Y9o`F#o#Agy=T7q^$MRd5AW=H0b#dj%ql z!g;QgQ`@_1|Mto+gV6bpd^!@(u6|K=Iq4tv6FwNm1(oPM32?4bH6LEgyl2H9a4v~3GF>giaI)O50&sQ-6%N2cW z0rTEnH*Bu_CcE63|AG?xp6!*Z2zQ0P3A|@lcO_?p)1CX8Lf^W*vWLR-82FWsRL&;n zD|5fC*xmGz%9|+8rraNBcyncl_(UEp$Fplg~!i0b{fTsxr$*>s4mVt|&9^(C{;Wr*OiY^oprpWcS{e^+jwQ z?5FU1T5u82I)2|A>e#cZRSUk>h&G@Fztn);TJXyZxIqj4egm%4a<4OBn<#sX-CU^# zmg_%yB4^J5G+NaY17fN+i>~t7XxmviTZ5hDAEKNq&-=VGnhjM6d_Tomxtf=7&#qX- z#-UE(G!>AIXIBE9r%{%Dk9E#hO>qf&t7ll#gS@*`_ErkWvl(88a;9 zR1bMpXK}IIq^Lels#jURdNS8Ao?R(1?Q)_@Re!kf+@L7Sl>wK|q%T0?Y<)_4R52sv%W{s^oI7^sTQ(6I@kQI ztnz2l6sUEl#JY1gbR6KiQ)1nz>Ib;)lvsCu4}_io*PRmUPC~u_*PRmUPEuwCxbBo# zcM|6haNQ}f?j)2O;JQ;{-AO1vz;&m@x|2{Kz;&m@x|2{Sz;&m@x|2|0fa^|)btj?X z0N0%o>rO(G0$g`WtUKAkvH;he66;RlDgs=0N~}AHs|s-4DY5P(Zc2dbPKk9Vp-6!1 zPKk9VwKzS%b*IF-^9exJLQ+QsYVj$t_-LzN-SLoc>`R!N-SLo;mdlZAT4OcpA{18*AwK-^{d4Cl@uaC zr!294CFBISewA3iWsK15Kfv{?#QK#`et_#&iS_FT0fhowze=oMsm9^} z*RK-mS2n&x$PXh4z6uKG6abFHeaXp4* zQ|@4t{`VKY5G6fWkA;KcKTzs6kdbtJmBRT?hALY>Mwn&ljK-*k_AV6 z1vk|pC;@4mJ$dMPVWTcyL;zk~OLoL}Nm#)f!tAE=9bZ+cf>Ytul=KmwGBD4sf$%M? z|EPrr!@r;$-?eZe{5I=<&%%A^*)d3*9B~+9>FkN8CEM>? ztR+im$@cp$)sl5<$-a`7OcX^Z${oIfD)2d=G(|sLs4il6`05RxLcVSTvgPz6Se$4L z+~ND6)quLJ-Qnxkn(PS2+2cK9nk>GH1=r|tZJq6i$5mUWgRPeF8s9uE<61qg+tTA2 zRz?g}YN)>LofT9C`?rVHa^;X$O<9iBI@UOB;qLGp!Vg$@L-+^>;z0|q3xAjJLl$le z-$?o+7H$gvkobo!+!+1|;qPde>!t9MEO^8g9N3N#r=Q62(H95LBDxS-LGB+S;$A?}7w{eeCI3-Wub>blYcn*Nl_?oUyjm>{;S9 zK5cXO4R+%^3lE8+?QE;oThKV&5s#{N_Ocx%bFFv2p5ZC2wOa35BGCufBi(k<>2#^p z-hyYRIU=TN|0-R(+B;YK3sbw=d#Tp>0Q?TSQRyuhK)r;jR{~DD)k<&exO$b|%hL6p zqxgm1g8X!QtJC!gy>rIZEA*~S*SnSVa=ZomBDTGcrR(K*XOF9wv!lR`I&W+LiWeZ+Oxpqcr||3lE9n zO_cd5-F771_O%rKRwyr z|6H1Hb^cY4wSFzjS3T>->HKS+DdTj0AT5h1J;26q@%XuDI8x<^GUcNlChu=i-M4sV z+3{4@id#IFYM<3zIGy-gJyS@GtG@POw|bUqAGSfy`hOT}E64YbaL#34Vs8?jto@a? zwK_b5rY$|;sWn$n?I9DMONhk%dYIpKboxDNS;*DSWrPPTJP`gowfbQTr!XJ6IxOvG zYb~aK6^?jGjoZJnMb*C++rOypPm8BX_h+59*A`Fbxa;uhbbqvsw0UyLj1npRyw6j` zb|JC$Vh;nUyjZp(Qmjh@rSKBsubd&o$-Em8V?GMAcHF?i{9(09|kq}5r! z){*qA9%t*>Xs>7~2g>2jQUA!S9?!THi(ouRCe~p!~rb zj=gF?pXBv~=9MaS1k4xL{$B9XzUT>O_PDFU6V7GhyCCOJDfm9k z`{@#U?am2-w;GFm&NQvhR&BZaoU^s%HigvMZ=chu+rCiiXrE*JL8G1*|76?l539B0 z-A*oBrKt-snWM zEL~dG8=VDO_6=Ir8=aNBK~1mRZ**c>PgiJJZ%)f9${Q$5RJX;z0|F<|x$a}snKf?g z+HJk7!XIU|4%>&#VctwR=Jv_6YY0HtnGq<;^9CvdVW%)FR0?^jMPA-{D8kZo5^mAX z&O0aXth`l4xWzIUFqJ_N;pUnNQQ0#E6Ti>#2F}BG*H#tjY7Po>YQUum)VYS8)a>#~ zoLS|oib#UEJgXP5gm9n;eDde~MQiKhKl9d#NW5Q#BP=xwR zuwh;7IJ(J_X=t(zbd$izui7%4N*i3gKEK>k2JczxoL_ELL7}Ov#<(ZE>rL zNL~RBeycYYRJvKRpbAySQB2OmP!z)Yrzp8_^D}jPo8wxHjK^7dKC9)KHZc~`(n9~M zBd$jndyDTL;cPp?{_!K6W6dLXY^X6^In?=fs0-2qX@)wGIn=>gG^tHtO!cO#A)`lS z7gTK6XgXa`Xa*-;P~>K(wQ86ZyD?U$W{gX$-AuA}Q<~N?SdR&2=*KKZVaK&oe#)8{ zpFv#4yaKnT2rB*=y1)+-AkSwooaA7Ks2fTS*7fvtB!*(~I($ywd{`e}w&rercW2$k zo>Wp(;aTdsu8xigspi#NCIVdRHulExsPf;&ye@V1Ks+h%ZS9`E+71e)3TnFrBu}RB z^muA6&c1O4L*q(f@lIf|ZrAPNQ{#*Yu-cnp7_dDtrwsGvtTU8uX0CIy3~-R zdNn8{9y0MTrt2+rWd334KO}RyWvE5wua-{T$E5d=bo|qqZ3J&%x_WX^20KJZb%TI?_4xx|FZ$#yvG9viwL_m#pZLkuF)--O>f1wCfNALGwM3 zuSe$lr^_m|cE9xBFBi7RoaRHV(*K&wX+eip%Rp<345DtAEb5kWFFMnWYMu(%*!OWQ z^NQPeIhw%g{x18lqxxU5jq&zCyH_L2E1vg1JdVtL0G(PbJYAGRxcB3{gvJk=xWP{oXR>x;s%;RSS`O zWzHX!#2`H+XKQ9kvRawfBC~c#e~-+*llGGRdpT9(m0na?&L1?7hb)h$q!0ajKr187 z`2jiiU7T-_d1I8%7_AjPEkiJFt<2oRt!7}T&!;6ituTEu*IzBGVE%WpT7_n z?=G43s`M|?#JzIruc(iyEi$iDMp|Tbr_67br`5^YPFaTX)hy4z&a9L3I%VZ}EUJ`o zo_lj4q5oV?H>HS9xd0Mi2rIf}>5d(;=mrk{fkMji5na zi!9q=GP$tpzn!XA1~Bve_n@CQ>uhQ)n^F1+S^ShNyj~W!$iknizjw-#7FqOjS=l1X z??k;DWiE{WA}ODi zl9RhRm*zCfmS%ZYv%C}*j!|skj6r4!W^S{b+bmZ%%X6CL`&D7Eh4d9FKNFhmlqJn_ zQi}{=-ge92Ubcb1aHY7boL(Vwe%U3fR5LSFoj{j7qnS2>YT32&3^-|(Z%`nd-W-g1 zvs|Qzt6C`EOeF*as)kE!mbJ|?sIVnnY;_?dRv=8Lb_eUi65)7ZR8gp9wXB%cEerNiZ}HV_fnF-g*8SFowk5JRL%s+r7@c-E61(fRm4%c`ejX}2u#uj9loy5>`l>YKyG7fu;c)E@+n1>SO^#N8#adg~3i@OX}pTL(0P8 z)G>2&;h(bLQZPANp=|ooo27ifUUR5u2L^!z+Nak?(u@RZU#=6st>^LMQjWDXuA6uk z_9Wg@+!n|$P|xF{NIh-20qL@U{}#_bILq?$eBJp4{xsfhpS$oMa^vkL{IY=W7H3&O z-em;^%l-|wiB)8d!*1tW{91#LD6CM=vEGXOvOxX~UMs=2`~u2rY3wr%<7hk=D7NyS|0X+7Z=|94-R`WCaZno#zo^9bn&py`iz(3P9?`g`rQD%+Z%H?&+80N z;%$&%JkPa?CuJv%4SI~Hc`V(3(%7JjyPccR4)sI44e+?|(6Sz9;%#urg{Owo^=%-_ zh2P??Z-Zzq{55X;5fkup;XQpW{x$?@?Zk6~HWVwr4T!qyf815y24mg$Mi<@&irx5i zF1!t5yYU}z;cbBZRCpV_xAOP7<^lC{g9i{xz=t*=-{?ex(azBC4xgIm?4R9KOSgZIZr|Fl-4L{RZ=+*0pywZX*bPxj z;~5^`2fI1zlEJglC8OOaPSl zs$@5Q(TdMvMWei7UTk=vB)YL3KWEj^9q-r_?ZjKvQT6V1lI*U*Pj}&WtNOYk>d#PL zvZt#r9*ckh_~7rN2JmscPi=pxs|PP8Lq5KktO?m(`VK77es#1Hf}>3RV3+=NE)nbL ziZ(59wWpe)NPYcd9gg?K_-lQU50MYNNxt#w zsQU3SRW@HR-_zHr6$?#lLQlZ$>UcYQgr6J3=tXHS3H;z#l7p#U-cO4R`%~}4D+3&R zyIz@DWSpT4wqK{RjA8^t<-O}Vb-Y;R0C(eLJ-9-)bT3` z_<1<=0p9^oS`}$+VHyvL{^Ve^Thw*;_r~is4&sHII@kQVINs4eh+o$eTF;yyq#sa! zA>HN_e`wEbOHK2X6*NJGdX$qIZqUg>oh+h~uAT27m0 z*S0{_Yik($sDqj9ifEC>o~e_?IyuW2uCmOu2J|oFnNK%RL9VYi;5!UG{g_SckMcBW zucusA+HN?Q9DK?j#Sa6<7IN_M>w|#U502YVADWE8?t3vZ9d?kRz)sOV*tJ>p!#!rv zzWzb{#2=s>&_ah$CQfr; zFO}cpL>QZF34HNFTWC)#9#wXuegu%+)JCg%jc3F-KGsUx5sKBs@E-Kv=r(^sP)+!> zyE0R?|0*C=k4*Jsf2Z=(a6E~2%yRN@dj!lxCPNFx-{e z#?{B9!sj}YP+8P|ZNv72Oz>lnxbEQd9P~V$qHidXpnt*j4HqY6MNJDa>ol12I0F^ODr2=iczyHV4>OyON!R~muC!sj_+V=PT4NvGsiLrdXww^cW^ z6!-#(9i+|egYyLb%;%p5{#nRBdcvS{3DkEn&XmoiKUa^0YI+On!l2`W_&rH@QwSBs z4_*#he!M2b%)5-WsFBBzcl5?|eO7ND92-`yD*C$OF;$0*q8)HIsllspWy8;0>fvZm z!;!wAQMF?L#>4c*CATtcQ_L|pT~s<&!`d5fPohm+$YbxaG_6`|I#HKm4acEAHl@3m zCZkj?39Nv&2kiJ5Erjmri^aF3ty+(v8qTzhV8|9|TeCCH&IOu-ORT{pRzRkU6hT`z z_mlCHqPBbR2j=%eX}#~7yen7bL z+~7@c@OPtmc!f^+JI)%$jtq|7X&75BIPOiu*m1$ZcXD}nx#5C?@9OgKsyB9pu)9fxnBh55EHcA?FCyk7ODFz(0FFg6}>*!O(B z>Q|mo(5Us~75Yu&d($w!JOSwc&lG* zvn$y4AA949AAd_(AG-b(8L-t4-_&jcAz@mU1DNkz*n{#?z5!SLyIiox$akv?PkL)V zcrQT7W9sMi;)8fw~f7E9Q^-X@(-tpLj zXa>T<4q(a`an=7Y@D{fG?fk(r6yjRoEzCFX$)D}%qf|XyYXGHx;`!d3#S=d4(l6WR zMy)=yJ>B4fiDw+rjSul@7j+b9`CTyiuXDky&zF_-q51#X1rtB^-n_=|!OL5go_NL= zElmDR=^xzI?K8gU#;5T1o`qSTu|*5B{s|h5Its+yHVfF=E8~V1e-E-YuE6m)1lYzx z2>%eUjeQV)4zP{q5Pl7?jav}T#!%RJ8R0U(Hoir;0kDlH5pD)-<41(o1Ge!V!hAfz z#&-yRob}Da?S$_DY~yc)?*(k*ZG;~OY~x>qUjl67U4%~pw(&K>#kgeIcpBj|0NeN! zVd}Sx?|7&~j}PUuF!4`w5~)MuDX)cz56vEfIeyf)#Vk^XGxL{(|%W9>Df`>EL?#Ex^_v5dRopd;N59{bc{_^&Om4`;BRToUiaJ zT<~+KPkr!uQ3!n;CqHvUkn%lNdp(NadUPKik+Mf2GP$T|uRkI9KfZco58^+fmo%z~ za1HSEKO2x|duIctzVYagDD)JFr5W|xGT>MSd^_OBjK5?1LxAl*3Hjdwcuc-YqC7)> zzDa1WXN8`C_*4eJI|18xI{AGIu#Nu{ejKnp*uNJ6+xS26o{auiXTS?H;0plLf0Jz( z{kfE|d9aoI5*hT@X272WZ1<5!|9Qal$K3ZJ{4ap*J`rKQT5iWTgz=5(C8g>T`|~~E z?LqjZ4ERqOa7l)KYck*^fVrO80A6grJVSpiz}xF_*fUA|B%}U1z+5kB{RBl9>EZ8B z7=AYZwtG0_zZ)?9fo<=LfbBjI@%I9@2mAN^4EVVW_{*>tx4rQlExX@Eeh)z(cKt`V z2upUm-$HmshQ8(i@8;J4c+6f)MWbHwD-kK*`^c|QzXwl#mu29$0k-SO5Y}7QXW(}O zwtIZ6e>Y&eA4T|nz;=I$@Q(o7{UE~pn5^ArBm7&yR$h+Rp8?y0@|L*lDFV381*`r5 zw)=_X$9M1SL3}a;{tfus^=P37_cQ8&yub3OU2Sch{y)(JdtDuasd=^iqBsvpLD;2JJ$#7J zXS@q>GK8@Z$m_ta1RfWRMq~Zau0;PvgzI7mC?})sL;8k45l^WOPe{R-c~7)`a1fDX zeC>4*5#vFGi=(lj-d@HLT@bc9u%F>3HKAS|b%3ZDp{k51z(i4*iSGX=48Pc0_Vk@P z3vAdSGtj34B$)xacZL64(GYhW$yJ;VlDNujkR%-%u?1sc2P^DEL6dYyLL<}tNtcfg zRj6XyPa9rQh3|@x{KaUI;;Ng3!P-FFsUu18L?<3H?Mc=4Um_5w+@f>Q=*o+iuD&38 z!I~A(D6C_gMIc7K;_@|1S7W1S90r08BBpy`>qX0!wni^nx$=?=)<)MZUDkR5SwNPK zXh(8L86qOTYgZ#6WbJ$H>gBZVwT$P3c4HFzc;tr0JNe1u#tU0lEn6O)U)wOj)}0m` z_8gD9=%T$Hhz#}(4YJdfDr~3aK)4-Jn1GurOnQpQUV5CP+^bTZ z7$?HJ8KrBub_dPI6C;|9&6ixXW_h%}c3y+%RHp5czo)+=m2kl@7zV7K0gdi#P@_9N5j?H#xqhWYjAyZeBzM#EPPVMyJ5z%~PRmt1Wb)6nBh zPvgSj@#IeKX}F3|xjm6l7R8oVe_z^UAW^bEig<2}*2MibK1?0umdIb;`7r9@w1#EU z*QTwOGr(;H3ZLv#yI-9y@uJa=E$vZllCENHOO zHx6MhWsut;X;5vRThzvlgZLtoffC${H+i*)umCh?*MEOY%7`xS_7S!ajKi-5;En>@ zNWf{pb7@LC#^?E|lWOGcVQ)hgp}^8HuDcs_5le*B(yc)L59WK9jOX7Ax;Ic}m-nRO zxdtbr?rfKF{{6@_;^b`wswf&p(J#Y^TMI?U`2S0&d>0AKVY43sY`?R~eSuGaQ4`8+ zyKIN&CY<~(C-dAdcoKAs4YOUAQ8pge;N-3W%eaqFjm~q)ZTXRo@D7}$TZWVS3%qZ6 z6M51xYH#UypGjHS4%g|`sLbc}>|xuz5e1e`f9DhTt+tcEk&fr5Ty(szItU@UYfxwo z%Ese!I4wWk&qwBKxfK$BY`b?FI`)_MNj0E*l7KlZ-IoA^-@x@q8Lxl4LGvrfp!-)% zr*(>b5Z}VFwn%FE9YP+DYN|12{Kk(TNwPRgNBH|VxywRZU>qp_6m&lYo;oHS<3l0P z@gA6EJjjc>c@`)2LONx5jkw=u-W;UkIfB#DF&=Pl&g4v;y>hX;4&+;snIrw|ugBycwS FzX8kDikJWZ literal 0 HcmV?d00001 diff --git a/build/Debug/.gitignore b/build/Debug/.gitignore new file mode 100644 index 0000000..d6b7ef3 --- /dev/null +++ b/build/Debug/.gitignore @@ -0,0 +1,2 @@ +* +!.gitignore diff --git a/build/Release/.gitignore b/build/Release/.gitignore new file mode 100644 index 0000000..d6b7ef3 --- /dev/null +++ b/build/Release/.gitignore @@ -0,0 +1,2 @@ +* +!.gitignore diff --git a/gmon.out b/gmon.out new file mode 100644 index 0000000000000000000000000000000000000000..7b8ad7bf715905525c14480cafc9b2df4cf7ec6e GIT binary patch literal 5957 zcmeI0t4;$!6ozLIq}-BnFHm3!ge;*6g;Z1^Dl1o1AP}2SLJe(`A}T8omB@-dz{(Yf z3Pj}!WCgMUQBi?FAo+KC=CI)zPLoOJ+jE&SUsmnIW23Iszu#a%EB8vP?4nXt#9H@v zje50Zvv^}4$iEm617bi7hygJm2E>3E5CdXB42S_SAO^&M7!U(uKu0TDeJ*Jge{s}5 zfWk6?x29Eho1g}8cL+Lw(Jny`FhHGY5Uy*L+aMSN-d73AczS(F&;%4W2?9XHb{hix zbBf#`C9c6YPo)FE6J|4z*_uV>3cv3%2q~xc~qF literal 0 HcmV?d00001 diff --git a/readings_2024-02-26.json b/readings_2024-02-26.json new file mode 100644 index 0000000..7e2f1b1 --- /dev/null +++ b/readings_2024-02-26.json @@ -0,0 +1 @@ +{}{ "09_49_44": { "temperature": { "celsius": 23.462168825045229, "fahrenheit": 74.231903885081408 }, "pressure": { "pascals": 68096.059937644299, "millibars": 680.96059937644304 }, "humidity_percent": 87.599591275460014 } }{ "10_59_25": { "temperature": { "celsius": 23.462168825045229, "fahrenheit": 74.231903885081408 }, "pressure": { "pascals": 68096.059937644299, "millibars": 680.96059937644304 }, "humidity_percent": 87.599591275460014 } } \ No newline at end of file diff --git a/src/bme280/bme280.c b/src/bme280/bme280.c new file mode 100644 index 0000000..203ccea --- /dev/null +++ b/src/bme280/bme280.c @@ -0,0 +1,1273 @@ +/**\mainpage + * Copyright (C) 2016 - 2017 Bosch Sensortec GmbH + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * Neither the name of the copyright holder nor the names of the + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER + * OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, + * OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE + * + * The information provided is believed to be accurate and reliable. + * The copyright holder assumes no responsibility + * for the consequences of use + * of such information nor for any infringement of patents or + * other rights of third parties which may result from its use. + * No license is granted by implication or otherwise under any patent or + * patent rights of the copyright holder. + * + * File bme280.c + * Date 14 Feb 2018 + * Version 3.3.4 + * + */ + +/*! @file bme280.c + @brief Sensor driver for BME280 sensor */ +#include "bme280.h" + +/**\name Internal macros */ +/* To identify osr settings selected by user */ +#define OVERSAMPLING_SETTINGS UINT8_C(0x07) +/* To identify filter and standby settings selected by user */ +#define FILTER_STANDBY_SETTINGS UINT8_C(0x18) + +/*! + * @brief This internal API puts the device to sleep mode. + * + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status. + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t put_device_to_sleep(const struct bme280_dev *dev); + +/*! + * @brief This internal API writes the power mode in the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[in] sensor_mode : Variable which contains the power mode to be set. + * + * @return Result of API execution status. + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t write_power_mode(uint8_t sensor_mode, const struct bme280_dev *dev); + +/*! + * @brief This internal API is used to validate the device pointer for + * null conditions. + * + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t null_ptr_check(const struct bme280_dev *dev); + +/*! + * @brief This internal API interleaves the register address between the + * register data buffer for burst write operation. + * + * @param[in] reg_addr : Contains the register address array. + * @param[out] temp_buff : Contains the temporary buffer to store the + * register data and register address. + * @param[in] reg_data : Contains the register data to be written in the + * temporary buffer. + * @param[in] len : No of bytes of data to be written for burst write. + */ +static void interleave_reg_addr(const uint8_t *reg_addr, uint8_t *temp_buff, const uint8_t *reg_data, uint8_t len); + +/*! + * @brief This internal API reads the calibration data from the sensor, parse + * it and store in the device structure. + * + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t get_calib_data(struct bme280_dev *dev); + +/*! + * @brief This internal API is used to parse the temperature and + * pressure calibration data and store it in the device structure. + * + * @param[out] dev : Structure instance of bme280_dev to store the calib data. + * @param[in] reg_data : Contains the calibration data to be parsed. + */ +static void parse_temp_press_calib_data(const uint8_t *reg_data, struct bme280_dev *dev); + +/*! + * @brief This internal API is used to parse the humidity calibration data + * and store it in device structure. + * + * @param[out] dev : Structure instance of bme280_dev to store the calib data. + * @param[in] reg_data : Contains calibration data to be parsed. + */ +static void parse_humidity_calib_data(const uint8_t *reg_data, struct bme280_dev *dev); + +#ifdef BME280_FLOAT_ENABLE +/*! + * @brief This internal API is used to compensate the raw pressure data and + * return the compensated pressure data in double data type. + * + * @param[in] uncomp_data : Contains the uncompensated pressure data. + * @param[in] calib_data : Pointer to the calibration data structure. + * + * @return Compensated pressure data. + * @retval Compensated pressure data in double. + */ +static double compensate_pressure(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data); + +/*! + * @brief This internal API is used to compensate the raw humidity data and + * return the compensated humidity data in double data type. + * + * @param[in] uncomp_data : Contains the uncompensated humidity data. + * @param[in] calib_data : Pointer to the calibration data structure. + * + * @return Compensated humidity data. + * @retval Compensated humidity data in double. + */ +static double compensate_humidity(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data); + +/*! + * @brief This internal API is used to compensate the raw temperature data and + * return the compensated temperature data in double data type. + * + * @param[in] uncomp_data : Contains the uncompensated temperature data. + * @param[in] calib_data : Pointer to calibration data structure. + * + * @return Compensated temperature data. + * @retval Compensated temperature data in double. + */ +static double compensate_temperature(const struct bme280_uncomp_data *uncomp_data, + struct bme280_calib_data *calib_data); + +#else + +/*! + * @brief This internal API is used to compensate the raw temperature data and + * return the compensated temperature data in integer data type. + * + * @param[in] uncomp_data : Contains the uncompensated temperature data. + * @param[in] calib_data : Pointer to calibration data structure. + * + * @return Compensated temperature data. + * @retval Compensated temperature data in integer. + */ +static int32_t compensate_temperature(const struct bme280_uncomp_data *uncomp_data, + struct bme280_calib_data *calib_data); + +/*! + * @brief This internal API is used to compensate the raw pressure data and + * return the compensated pressure data in integer data type. + * + * @param[in] uncomp_data : Contains the uncompensated pressure data. + * @param[in] calib_data : Pointer to the calibration data structure. + * + * @return Compensated pressure data. + * @retval Compensated pressure data in integer. + */ +static uint32_t compensate_pressure(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data); + +/*! + * @brief This internal API is used to compensate the raw humidity data and + * return the compensated humidity data in integer data type. + * + * @param[in] uncomp_data : Contains the uncompensated humidity data. + * @param[in] calib_data : Pointer to the calibration data structure. + * + * @return Compensated humidity data. + * @retval Compensated humidity data in integer. + */ +static uint32_t compensate_humidity(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data); + +#endif + +/*! + * @brief This internal API is used to identify the settings which the user + * wants to modify in the sensor. + * + * @param[in] sub_settings : Contains the settings subset to identify particular + * group of settings which the user is interested to change. + * @param[in] desired_settings : Contains the user specified settings. + * + * @return Indicates whether user is interested to modify the settings which + * are related to sub_settings. + * @retval True -> User wants to modify this group of settings + * @retval False -> User does not want to modify this group of settings + */ +static uint8_t are_settings_changed(uint8_t sub_settings, uint8_t desired_settings); + +/*! + * @brief This API sets the humidity oversampling settings of the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t set_osr_humidity_settings(const struct bme280_settings *settings, const struct bme280_dev *dev); + +/*! + * @brief This internal API sets the oversampling settings for pressure, + * temperature and humidity in the sensor. + * + * @param[in] desired_settings : Variable used to select the settings which + * are to be set. + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t set_osr_settings(uint8_t desired_settings, const struct bme280_settings *settings, + const struct bme280_dev *dev); + +/*! + * @brief This API sets the pressure and/or temperature oversampling settings + * in the sensor according to the settings selected by the user. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[in] desired_settings: variable to select the pressure and/or + * temperature oversampling settings. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t set_osr_press_temp_settings(uint8_t desired_settings, const struct bme280_settings *settings, + const struct bme280_dev *dev); + +/*! + * @brief This internal API fills the pressure oversampling settings provided by + * the user in the data buffer so as to write in the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[out] reg_data : Variable which is filled according to the pressure + * oversampling data provided by the user. + */ +static void fill_osr_press_settings(uint8_t *reg_data, const struct bme280_settings *settings); + +/*! + * @brief This internal API fills the temperature oversampling settings provided + * by the user in the data buffer so as to write in the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[out] reg_data : Variable which is filled according to the temperature + * oversampling data provided by the user. + */ +static void fill_osr_temp_settings(uint8_t *reg_data, const struct bme280_settings *settings); + +/*! + * @brief This internal API sets the filter and/or standby duration settings + * in the sensor according to the settings selected by the user. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[in] desired_settings : variable to select the filter and/or + * standby duration settings. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t set_filter_standby_settings(uint8_t desired_settings, const struct bme280_settings *settings, + const struct bme280_dev *dev); + +/*! + * @brief This internal API fills the filter settings provided by the user + * in the data buffer so as to write in the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[out] reg_data : Variable which is filled according to the filter + * settings data provided by the user. + */ +static void fill_filter_settings(uint8_t *reg_data, const struct bme280_settings *settings); + +/*! + * @brief This internal API fills the standby duration settings provided by the + * user in the data buffer so as to write in the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[out] reg_data : Variable which is filled according to the standby + * settings data provided by the user. + */ +static void fill_standby_settings(uint8_t *reg_data, const struct bme280_settings *settings); + +/*! + * @brief This internal API parse the oversampling(pressure, temperature + * and humidity), filter and standby duration settings and store in the + * device structure. + * + * @param[out] dev : Structure instance of bme280_dev. + * @param[in] reg_data : Register data to be parsed. + */ +static void parse_device_settings(const uint8_t *reg_data, struct bme280_settings *settings); + +/*! + * @brief This internal API reloads the already existing device settings in the + * sensor after soft reset. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[in] settings : Pointer variable which contains the settings to + * be set in the sensor. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +static int8_t reload_device_settings(const struct bme280_settings *settings, const struct bme280_dev *dev); + +/****************** Global Function Definitions *******************************/ + +/*! + * @brief This API is the entry point. + * It reads the chip-id and calibration data from the sensor. + */ +int8_t bme280_init(struct bme280_dev *dev) +{ + int8_t rslt; + /* chip id read try count */ + uint8_t try_count = 5; + uint8_t chip_id = 0; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + /* Proceed if null check is fine */ + if (rslt == BME280_OK) { + while (try_count) { + /* Read the chip-id of bme280 sensor */ + rslt = bme280_get_regs(BME280_CHIP_ID_ADDR, &chip_id, 1, dev); + /* Check for chip id validity */ + if ((rslt == BME280_OK) && (chip_id == BME280_CHIP_ID)) { + dev->chip_id = chip_id; + /* Reset the sensor */ + rslt = bme280_soft_reset(dev); + if (rslt == BME280_OK) { + /* Read the calibration data */ + rslt = get_calib_data(dev); + } + break; + } + /* Wait for 1 ms */ + dev->delay_ms(1); + --try_count; + } + /* Chip id check failed */ + if (!try_count) + rslt = BME280_E_DEV_NOT_FOUND; + } + + return rslt; +} + +/*! + * @brief This API reads the data from the given register address of the sensor. + */ +int8_t bme280_get_regs(uint8_t reg_addr, uint8_t *reg_data, uint16_t len, const struct bme280_dev *dev) +{ + int8_t rslt; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + /* Proceed if null check is fine */ + if (rslt == BME280_OK) { + /* If interface selected is SPI */ + if (dev->intf != BME280_I2C_INTF) + reg_addr = reg_addr | 0x80; + /* Read the data */ + rslt = dev->read(dev->dev_id, reg_addr, reg_data, len); + /* Check for communication error */ + if (rslt != BME280_OK) + rslt = BME280_E_COMM_FAIL; + } + + return rslt; +} + +/*! + * @brief This API writes the given data to the register address + * of the sensor. + */ +int8_t bme280_set_regs(uint8_t *reg_addr, const uint8_t *reg_data, uint8_t len, const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t temp_buff[20]; /* Typically not to write more than 10 registers */ + + if (len > 10) + len = 10; + + uint16_t temp_len; + uint8_t reg_addr_cnt; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + /* Check for arguments validity */ + if ((rslt == BME280_OK) && (reg_addr != NULL) && (reg_data != NULL)) { + if (len != 0) { + temp_buff[0] = reg_data[0]; + /* If interface selected is SPI */ + if (dev->intf != BME280_I2C_INTF) { + for (reg_addr_cnt = 0; reg_addr_cnt < len; reg_addr_cnt++) + reg_addr[reg_addr_cnt] = reg_addr[reg_addr_cnt] & 0x7F; + } + /* Burst write mode */ + if (len > 1) { + /* Interleave register address w.r.t data for + burst write*/ + interleave_reg_addr(reg_addr, temp_buff, reg_data, len); + temp_len = ((len * 2) - 1); + } else { + temp_len = len; + } + rslt = dev->write(dev->dev_id, reg_addr[0], temp_buff, temp_len); + /* Check for communication error */ + if (rslt != BME280_OK) + rslt = BME280_E_COMM_FAIL; + } else { + rslt = BME280_E_INVALID_LEN; + } + } else { + rslt = BME280_E_NULL_PTR; + } + + + return rslt; +} + +/*! + * @brief This API sets the oversampling, filter and standby duration + * (normal mode) settings in the sensor. + */ +int8_t bme280_set_sensor_settings(uint8_t desired_settings, const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t sensor_mode; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + /* Proceed if null check is fine */ + if (rslt == BME280_OK) { + rslt = bme280_get_sensor_mode(&sensor_mode, dev); + if ((rslt == BME280_OK) && (sensor_mode != BME280_SLEEP_MODE)) + rslt = put_device_to_sleep(dev); + if (rslt == BME280_OK) { + /* Check if user wants to change oversampling + settings */ + if (are_settings_changed(OVERSAMPLING_SETTINGS, desired_settings)) + rslt = set_osr_settings(desired_settings, &dev->settings, dev); + /* Check if user wants to change filter and/or + standby settings */ + if ((rslt == BME280_OK) && are_settings_changed(FILTER_STANDBY_SETTINGS, desired_settings)) + rslt = set_filter_standby_settings(desired_settings, &dev->settings, dev); + } + } + + return rslt; +} + +/*! + * @brief This API gets the oversampling, filter and standby duration + * (normal mode) settings from the sensor. + */ +int8_t bme280_get_sensor_settings(struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t reg_data[4]; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + /* Proceed if null check is fine */ + if (rslt == BME280_OK) { + rslt = bme280_get_regs(BME280_CTRL_HUM_ADDR, reg_data, 4, dev); + if (rslt == BME280_OK) + parse_device_settings(reg_data, &dev->settings); + } + + return rslt; +} + +/*! + * @brief This API sets the power mode of the sensor. + */ +int8_t bme280_set_sensor_mode(uint8_t sensor_mode, const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t last_set_mode; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + + if (rslt == BME280_OK) { + rslt = bme280_get_sensor_mode(&last_set_mode, dev); + /* If the sensor is not in sleep mode put the device to sleep + mode */ + if ((rslt == BME280_OK) && (last_set_mode != BME280_SLEEP_MODE)) + rslt = put_device_to_sleep(dev); + /* Set the power mode */ + if (rslt == BME280_OK) + rslt = write_power_mode(sensor_mode, dev); + } + + return rslt; +} + +/*! + * @brief This API gets the power mode of the sensor. + */ +int8_t bme280_get_sensor_mode(uint8_t *sensor_mode, const struct bme280_dev *dev) +{ + int8_t rslt; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + + if (rslt == BME280_OK) { + /* Read the power mode register */ + rslt = bme280_get_regs(BME280_PWR_CTRL_ADDR, sensor_mode, 1, dev); + /* Assign the power mode in the device structure */ + *sensor_mode = BME280_GET_BITS_POS_0(*sensor_mode, BME280_SENSOR_MODE); + } + + return rslt; +} + +/*! + * @brief This API performs the soft reset of the sensor. + */ +int8_t bme280_soft_reset(const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t reg_addr = BME280_RESET_ADDR; + /* 0xB6 is the soft reset command */ + uint8_t soft_rst_cmd = 0xB6; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + /* Proceed if null check is fine */ + if (rslt == BME280_OK) { + /* Write the soft reset command in the sensor */ + rslt = bme280_set_regs(®_addr, &soft_rst_cmd, 1, dev); + /* As per data sheet, startup time is 2 ms. */ + dev->delay_ms(2); + } + + return rslt; +} + +/*! + * @brief This API reads the pressure, temperature and humidity data from the + * sensor, compensates the data and store it in the bme280_data structure + * instance passed by the user. + */ +int8_t bme280_get_sensor_data(uint8_t sensor_comp, struct bme280_data *comp_data, struct bme280_dev *dev) +{ + int8_t rslt; + /* Array to store the pressure, temperature and humidity data read from + the sensor */ + uint8_t reg_data[BME280_P_T_H_DATA_LEN] = {0}; + struct bme280_uncomp_data uncomp_data = {0}; + + /* Check for null pointer in the device structure*/ + rslt = null_ptr_check(dev); + + if ((rslt == BME280_OK) && (comp_data != NULL)) { + /* Read the pressure and temperature data from the sensor */ + rslt = bme280_get_regs(BME280_DATA_ADDR, reg_data, BME280_P_T_H_DATA_LEN, dev); + + if (rslt == BME280_OK) { + /* Parse the read data from the sensor */ + bme280_parse_sensor_data(reg_data, &uncomp_data); + /* Compensate the pressure and/or temperature and/or + humidity data from the sensor */ + rslt = bme280_compensate_data(sensor_comp, &uncomp_data, comp_data, &dev->calib_data); + } + } else { + rslt = BME280_E_NULL_PTR; + } + + return rslt; +} + +/*! + * @brief This API is used to parse the pressure, temperature and + * humidity data and store it in the bme280_uncomp_data structure instance. + */ +void bme280_parse_sensor_data(const uint8_t *reg_data, struct bme280_uncomp_data *uncomp_data) +{ + /* Variables to store the sensor data */ + uint32_t data_xlsb; + uint32_t data_lsb; + uint32_t data_msb; + + /* Store the parsed register values for pressure data */ + data_msb = (uint32_t)reg_data[0] << 12; + data_lsb = (uint32_t)reg_data[1] << 4; + data_xlsb = (uint32_t)reg_data[2] >> 4; + uncomp_data->pressure = data_msb | data_lsb | data_xlsb; + + /* Store the parsed register values for temperature data */ + data_msb = (uint32_t)reg_data[3] << 12; + data_lsb = (uint32_t)reg_data[4] << 4; + data_xlsb = (uint32_t)reg_data[5] >> 4; + uncomp_data->temperature = data_msb | data_lsb | data_xlsb; + + /* Store the parsed register values for temperature data */ + data_lsb = (uint32_t)reg_data[6] << 8; + data_msb = (uint32_t)reg_data[7]; + uncomp_data->humidity = data_msb | data_lsb; +} + + +/*! + * @brief This API is used to compensate the pressure and/or + * temperature and/or humidity data according to the component selected + * by the user. + */ +int8_t bme280_compensate_data(uint8_t sensor_comp, const struct bme280_uncomp_data *uncomp_data, + struct bme280_data *comp_data, struct bme280_calib_data *calib_data) +{ + int8_t rslt = BME280_OK; + + if ((uncomp_data != NULL) && (comp_data != NULL) && (calib_data != NULL)) { + /* Initialize to zero */ + comp_data->temperature = 0; + comp_data->pressure = 0; + comp_data->humidity = 0; + /* If pressure or temperature component is selected */ + if (sensor_comp & (BME280_PRESS | BME280_TEMP | BME280_HUM)) { + /* Compensate the temperature data */ + comp_data->temperature = compensate_temperature(uncomp_data, calib_data); + } + if (sensor_comp & BME280_PRESS) { + /* Compensate the pressure data */ + comp_data->pressure = compensate_pressure(uncomp_data, calib_data); + } + if (sensor_comp & BME280_HUM) { + /* Compensate the humidity data */ + comp_data->humidity = compensate_humidity(uncomp_data, calib_data); + } + } else { + rslt = BME280_E_NULL_PTR; + } + + return rslt; +} + +/*! + * @brief This internal API sets the oversampling settings for pressure, + * temperature and humidity in the sensor. + */ +static int8_t set_osr_settings(uint8_t desired_settings, const struct bme280_settings *settings, + const struct bme280_dev *dev) +{ + int8_t rslt = BME280_W_INVALID_OSR_MACRO; + + if (desired_settings & BME280_OSR_HUM_SEL) + rslt = set_osr_humidity_settings(settings, dev); + if (desired_settings & (BME280_OSR_PRESS_SEL | BME280_OSR_TEMP_SEL)) + rslt = set_osr_press_temp_settings(desired_settings, settings, dev); + + return rslt; +} + +/*! + * @brief This API sets the humidity oversampling settings of the sensor. + */ +static int8_t set_osr_humidity_settings(const struct bme280_settings *settings, const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t ctrl_hum; + uint8_t ctrl_meas; + uint8_t reg_addr = BME280_CTRL_HUM_ADDR; + + ctrl_hum = settings->osr_h & BME280_CTRL_HUM_MSK; + /* Write the humidity control value in the register */ + rslt = bme280_set_regs(®_addr, &ctrl_hum, 1, dev); + /* Humidity related changes will be only effective after a + write operation to ctrl_meas register */ + if (rslt == BME280_OK) { + reg_addr = BME280_CTRL_MEAS_ADDR; + rslt = bme280_get_regs(reg_addr, &ctrl_meas, 1, dev); + if (rslt == BME280_OK) + rslt = bme280_set_regs(®_addr, &ctrl_meas, 1, dev); + } + + return rslt; +} + +/*! + * @brief This API sets the pressure and/or temperature oversampling settings + * in the sensor according to the settings selected by the user. + */ +static int8_t set_osr_press_temp_settings(uint8_t desired_settings, const struct bme280_settings *settings, + const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t reg_addr = BME280_CTRL_MEAS_ADDR; + uint8_t reg_data; + + rslt = bme280_get_regs(reg_addr, ®_data, 1, dev); + + if (rslt == BME280_OK) { + if (desired_settings & BME280_OSR_PRESS_SEL) + fill_osr_press_settings(®_data, settings); + if (desired_settings & BME280_OSR_TEMP_SEL) + fill_osr_temp_settings(®_data, settings); + /* Write the oversampling settings in the register */ + rslt = bme280_set_regs(®_addr, ®_data, 1, dev); + } + + return rslt; +} + +/*! + * @brief This internal API sets the filter and/or standby duration settings + * in the sensor according to the settings selected by the user. + */ +static int8_t set_filter_standby_settings(uint8_t desired_settings, const struct bme280_settings *settings, + const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t reg_addr = BME280_CONFIG_ADDR; + uint8_t reg_data; + + rslt = bme280_get_regs(reg_addr, ®_data, 1, dev); + + if (rslt == BME280_OK) { + if (desired_settings & BME280_FILTER_SEL) + fill_filter_settings(®_data, settings); + if (desired_settings & BME280_STANDBY_SEL) + fill_standby_settings(®_data, settings); + /* Write the oversampling settings in the register */ + rslt = bme280_set_regs(®_addr, ®_data, 1, dev); + } + + return rslt; +} + +/*! + * @brief This internal API fills the filter settings provided by the user + * in the data buffer so as to write in the sensor. + */ +static void fill_filter_settings(uint8_t *reg_data, const struct bme280_settings *settings) +{ + *reg_data = BME280_SET_BITS(*reg_data, BME280_FILTER, settings->filter); +} + +/*! + * @brief This internal API fills the standby duration settings provided by + * the user in the data buffer so as to write in the sensor. + */ +static void fill_standby_settings(uint8_t *reg_data, const struct bme280_settings *settings) +{ + *reg_data = BME280_SET_BITS(*reg_data, BME280_STANDBY, settings->standby_time); +} + +/*! + * @brief This internal API fills the pressure oversampling settings provided by + * the user in the data buffer so as to write in the sensor. + */ +static void fill_osr_press_settings(uint8_t *reg_data, const struct bme280_settings *settings) +{ + *reg_data = BME280_SET_BITS(*reg_data, BME280_CTRL_PRESS, settings->osr_p); +} + +/*! + * @brief This internal API fills the temperature oversampling settings + * provided by the user in the data buffer so as to write in the sensor. + */ +static void fill_osr_temp_settings(uint8_t *reg_data, const struct bme280_settings *settings) +{ + *reg_data = BME280_SET_BITS(*reg_data, BME280_CTRL_TEMP, settings->osr_t); +} + +/*! + * @brief This internal API parse the oversampling(pressure, temperature + * and humidity), filter and standby duration settings and store in the + * device structure. + */ +static void parse_device_settings(const uint8_t *reg_data, struct bme280_settings *settings) +{ + settings->osr_h = BME280_GET_BITS_POS_0(reg_data[0], BME280_CTRL_HUM); + settings->osr_p = BME280_GET_BITS(reg_data[2], BME280_CTRL_PRESS); + settings->osr_t = BME280_GET_BITS(reg_data[2], BME280_CTRL_TEMP); + settings->filter = BME280_GET_BITS(reg_data[3], BME280_FILTER); + settings->standby_time = BME280_GET_BITS(reg_data[3], BME280_STANDBY); +} +/*! + * @brief This internal API writes the power mode in the sensor. + */ +static int8_t write_power_mode(uint8_t sensor_mode, const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t reg_addr = BME280_PWR_CTRL_ADDR; + /* Variable to store the value read from power mode register */ + uint8_t sensor_mode_reg_val; + + /* Read the power mode register */ + rslt = bme280_get_regs(reg_addr, &sensor_mode_reg_val, 1, dev); + /* Set the power mode */ + if (rslt == BME280_OK) { + sensor_mode_reg_val = BME280_SET_BITS_POS_0(sensor_mode_reg_val, BME280_SENSOR_MODE, sensor_mode); + /* Write the power mode in the register */ + rslt = bme280_set_regs(®_addr, &sensor_mode_reg_val, 1, dev); + } + + return rslt; +} + +/*! + * @brief This internal API puts the device to sleep mode. + */ +static int8_t put_device_to_sleep(const struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t reg_data[4]; + struct bme280_settings settings; + + rslt = bme280_get_regs(BME280_CTRL_HUM_ADDR, reg_data, 4, dev); + if (rslt == BME280_OK) { + parse_device_settings(reg_data, &settings); + rslt = bme280_soft_reset(dev); + if (rslt == BME280_OK) + rslt = reload_device_settings(&settings, dev); + } + + return rslt; +} + +/*! + * @brief This internal API reloads the already existing device settings in + * the sensor after soft reset. + */ +static int8_t reload_device_settings(const struct bme280_settings *settings, const struct bme280_dev *dev) +{ + int8_t rslt; + + rslt = set_osr_settings(BME280_ALL_SETTINGS_SEL, settings, dev); + if (rslt == BME280_OK) + rslt = set_filter_standby_settings(BME280_ALL_SETTINGS_SEL, settings, dev); + + return rslt; +} + +#ifdef BME280_FLOAT_ENABLE +/*! + * @brief This internal API is used to compensate the raw temperature data and + * return the compensated temperature data in double data type. + */ +static double compensate_temperature(const struct bme280_uncomp_data *uncomp_data, + struct bme280_calib_data *calib_data) +{ + double var1; + double var2; + double temperature; + double temperature_min = -40; + double temperature_max = 85; + + var1 = ((double)uncomp_data->temperature) / 16384.0 - ((double)calib_data->dig_T1) / 1024.0; + var1 = var1 * ((double)calib_data->dig_T2); + var2 = (((double)uncomp_data->temperature) / 131072.0 - ((double)calib_data->dig_T1) / 8192.0); + var2 = (var2 * var2) * ((double)calib_data->dig_T3); + calib_data->t_fine = (int32_t)(var1 + var2); + temperature = (var1 + var2) / 5120.0; + + if (temperature < temperature_min) + temperature = temperature_min; + else if (temperature > temperature_max) + temperature = temperature_max; + + return temperature; +} + +/*! + * @brief This internal API is used to compensate the raw pressure data and + * return the compensated pressure data in double data type. + */ +static double compensate_pressure(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data) +{ + double var1; + double var2; + double var3; + double pressure; + double pressure_min = 30000.0; + double pressure_max = 110000.0; + + var1 = ((double)calib_data->t_fine / 2.0) - 64000.0; + var2 = var1 * var1 * ((double)calib_data->dig_P6) / 32768.0; + var2 = var2 + var1 * ((double)calib_data->dig_P5) * 2.0; + var2 = (var2 / 4.0) + (((double)calib_data->dig_P4) * 65536.0); + var3 = ((double)calib_data->dig_P3) * var1 * var1 / 524288.0; + var1 = (var3 + ((double)calib_data->dig_P2) * var1) / 524288.0; + var1 = (1.0 + var1 / 32768.0) * ((double)calib_data->dig_P1); + /* avoid exception caused by division by zero */ + if (var1) { + pressure = 1048576.0 - (double) uncomp_data->pressure; + pressure = (pressure - (var2 / 4096.0)) * 6250.0 / var1; + var1 = ((double)calib_data->dig_P9) * pressure * pressure / 2147483648.0; + var2 = pressure * ((double)calib_data->dig_P8) / 32768.0; + pressure = pressure + (var1 + var2 + ((double)calib_data->dig_P7)) / 16.0; + + if (pressure < pressure_min) + pressure = pressure_min; + else if (pressure > pressure_max) + pressure = pressure_max; + } else { /* Invalid case */ + pressure = pressure_min; + } + + return pressure; +} + +/*! + * @brief This internal API is used to compensate the raw humidity data and + * return the compensated humidity data in double data type. + */ +static double compensate_humidity(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data) +{ + double humidity; + double humidity_min = 0.0; + double humidity_max = 100.0; + double var1; + double var2; + double var3; + double var4; + double var5; + double var6; + + var1 = ((double)calib_data->t_fine) - 76800.0; + var2 = (((double)calib_data->dig_H4) * 64.0 + (((double)calib_data->dig_H5) / 16384.0) * var1); + var3 = uncomp_data->humidity - var2; + var4 = ((double)calib_data->dig_H2) / 65536.0; + var5 = (1.0 + (((double)calib_data->dig_H3) / 67108864.0) * var1); + var6 = 1.0 + (((double)calib_data->dig_H6) / 67108864.0) * var1 * var5; + var6 = var3 * var4 * (var5 * var6); + humidity = var6 * (1.0 - ((double)calib_data->dig_H1) * var6 / 524288.0); + + if (humidity > humidity_max) + humidity = humidity_max; + else if (humidity < humidity_min) + humidity = humidity_min; + + return humidity; +} + +#else +/*! + * @brief This internal API is used to compensate the raw temperature data and + * return the compensated temperature data in integer data type. + */ +static int32_t compensate_temperature(const struct bme280_uncomp_data *uncomp_data, + struct bme280_calib_data *calib_data) +{ + int32_t var1; + int32_t var2; + int32_t temperature; + int32_t temperature_min = -4000; + int32_t temperature_max = 8500; + + var1 = (int32_t)((uncomp_data->temperature / 8) - ((int32_t)calib_data->dig_T1 * 2)); + var1 = (var1 * ((int32_t)calib_data->dig_T2)) / 2048; + var2 = (int32_t)((uncomp_data->temperature / 16) - ((int32_t)calib_data->dig_T1)); + var2 = (((var2 * var2) / 4096) * ((int32_t)calib_data->dig_T3)) / 16384; + calib_data->t_fine = var1 + var2; + temperature = (calib_data->t_fine * 5 + 128) / 256; + + if (temperature < temperature_min) + temperature = temperature_min; + else if (temperature > temperature_max) + temperature = temperature_max; + + return temperature; +} +#ifdef BME280_64BIT_ENABLE +/*! + * @brief This internal API is used to compensate the raw pressure data and + * return the compensated pressure data in integer data type with higher + * accuracy. + */ +static uint32_t compensate_pressure(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data) +{ + int64_t var1; + int64_t var2; + int64_t var3; + int64_t var4; + uint32_t pressure; + uint32_t pressure_min = 3000000; + uint32_t pressure_max = 11000000; + + var1 = ((int64_t)calib_data->t_fine) - 128000; + var2 = var1 * var1 * (int64_t)calib_data->dig_P6; + var2 = var2 + ((var1 * (int64_t)calib_data->dig_P5) * 131072); + var2 = var2 + (((int64_t)calib_data->dig_P4) * 34359738368); + var1 = ((var1 * var1 * (int64_t)calib_data->dig_P3) / 256) + ((var1 * ((int64_t)calib_data->dig_P2) * 4096)); + var3 = ((int64_t)1) * 140737488355328; + var1 = (var3 + var1) * ((int64_t)calib_data->dig_P1) / 8589934592; + + /* To avoid divide by zero exception */ + if (var1 != 0) { + var4 = 1048576 - uncomp_data->pressure; + var4 = (((var4 * 2147483648) - var2) * 3125) / var1; + var1 = (((int64_t)calib_data->dig_P9) * (var4 / 8192) * (var4 / 8192)) / 33554432; + var2 = (((int64_t)calib_data->dig_P8) * var4) / 524288; + var4 = ((var4 + var1 + var2) / 256) + (((int64_t)calib_data->dig_P7) * 16); + pressure = (uint32_t)(((var4 / 2) * 100) / 128); + + if (pressure < pressure_min) + pressure = pressure_min; + else if (pressure > pressure_max) + pressure = pressure_max; + } else { + pressure = pressure_min; + } + + return pressure; +} +#else +/*! + * @brief This internal API is used to compensate the raw pressure data and + * return the compensated pressure data in integer data type. + */ +static uint32_t compensate_pressure(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data) +{ + int32_t var1; + int32_t var2; + int32_t var3; + int32_t var4; + uint32_t var5; + uint32_t pressure; + uint32_t pressure_min = 30000; + uint32_t pressure_max = 110000; + + var1 = (((int32_t)calib_data->t_fine) / 2) - (int32_t)64000; + var2 = (((var1 / 4) * (var1 / 4)) / 2048) * ((int32_t)calib_data->dig_P6); + var2 = var2 + ((var1 * ((int32_t)calib_data->dig_P5)) * 2); + var2 = (var2 / 4) + (((int32_t)calib_data->dig_P4) * 65536); + var3 = (calib_data->dig_P3 * (((var1 / 4) * (var1 / 4)) / 8192)) / 8; + var4 = (((int32_t)calib_data->dig_P2) * var1) / 2; + var1 = (var3 + var4) / 262144; + var1 = (((32768 + var1)) * ((int32_t)calib_data->dig_P1)) / 32768; + /* avoid exception caused by division by zero */ + if (var1) { + var5 = (uint32_t)((uint32_t)1048576) - uncomp_data->pressure; + pressure = ((uint32_t)(var5 - (uint32_t)(var2 / 4096))) * 3125; + if (pressure < 0x80000000) + pressure = (pressure << 1) / ((uint32_t)var1); + else + pressure = (pressure / (uint32_t)var1) * 2; + + var1 = (((int32_t)calib_data->dig_P9) * ((int32_t)(((pressure / 8) * (pressure / 8)) / 8192))) / 4096; + var2 = (((int32_t)(pressure / 4)) * ((int32_t)calib_data->dig_P8)) / 8192; + pressure = (uint32_t)((int32_t)pressure + ((var1 + var2 + calib_data->dig_P7) / 16)); + + if (pressure < pressure_min) + pressure = pressure_min; + else if (pressure > pressure_max) + pressure = pressure_max; + } else { + pressure = pressure_min; + } + + return pressure; +} +#endif + +/*! + * @brief This internal API is used to compensate the raw humidity data and + * return the compensated humidity data in integer data type. + */ +static uint32_t compensate_humidity(const struct bme280_uncomp_data *uncomp_data, + const struct bme280_calib_data *calib_data) +{ + int32_t var1; + int32_t var2; + int32_t var3; + int32_t var4; + int32_t var5; + uint32_t humidity; + uint32_t humidity_max = 102400; + + var1 = calib_data->t_fine - ((int32_t)76800); + var2 = (int32_t)(uncomp_data->humidity * 16384); + var3 = (int32_t)(((int32_t)calib_data->dig_H4) * 1048576); + var4 = ((int32_t)calib_data->dig_H5) * var1; + var5 = (((var2 - var3) - var4) + (int32_t)16384) / 32768; + var2 = (var1 * ((int32_t)calib_data->dig_H6)) / 1024; + var3 = (var1 * ((int32_t)calib_data->dig_H3)) / 2048; + var4 = ((var2 * (var3 + (int32_t)32768)) / 1024) + (int32_t)2097152; + var2 = ((var4 * ((int32_t)calib_data->dig_H2)) + 8192) / 16384; + var3 = var5 * var2; + var4 = ((var3 / 32768) * (var3 / 32768)) / 128; + var5 = var3 - ((var4 * ((int32_t)calib_data->dig_H1)) / 16); + var5 = (var5 < 0 ? 0 : var5); + var5 = (var5 > 419430400 ? 419430400 : var5); + humidity = (uint32_t)(var5 / 4096); + + if (humidity > humidity_max) + humidity = humidity_max; + + return humidity; +} +#endif + +/*! + * @brief This internal API reads the calibration data from the sensor, parse + * it and store in the device structure. + */ +static int8_t get_calib_data(struct bme280_dev *dev) +{ + int8_t rslt; + uint8_t reg_addr = BME280_TEMP_PRESS_CALIB_DATA_ADDR; + /* Array to store calibration data */ + uint8_t calib_data[BME280_TEMP_PRESS_CALIB_DATA_LEN] = {0}; + + /* Read the calibration data from the sensor */ + rslt = bme280_get_regs(reg_addr, calib_data, BME280_TEMP_PRESS_CALIB_DATA_LEN, dev); + + if (rslt == BME280_OK) { + /* Parse temperature and pressure calibration data and store + it in device structure */ + parse_temp_press_calib_data(calib_data, dev); + + reg_addr = BME280_HUMIDITY_CALIB_DATA_ADDR; + /* Read the humidity calibration data from the sensor */ + rslt = bme280_get_regs(reg_addr, calib_data, BME280_HUMIDITY_CALIB_DATA_LEN, dev); + if (rslt == BME280_OK) { + /* Parse humidity calibration data and store it in + device structure */ + parse_humidity_calib_data(calib_data, dev); + } + } + + return rslt; +} + +/*! + * @brief This internal API interleaves the register address between the + * register data buffer for burst write operation. + */ +static void interleave_reg_addr(const uint8_t *reg_addr, uint8_t *temp_buff, const uint8_t *reg_data, uint8_t len) +{ + uint8_t index; + + for (index = 1; index < len; index++) { + temp_buff[(index * 2) - 1] = reg_addr[index]; + temp_buff[index * 2] = reg_data[index]; + } +} + +/*! + * @brief This internal API is used to parse the temperature and + * pressure calibration data and store it in device structure. + */ +static void parse_temp_press_calib_data(const uint8_t *reg_data, struct bme280_dev *dev) +{ + struct bme280_calib_data *calib_data = &dev->calib_data; + + calib_data->dig_T1 = BME280_CONCAT_BYTES(reg_data[1], reg_data[0]); + calib_data->dig_T2 = (int16_t)BME280_CONCAT_BYTES(reg_data[3], reg_data[2]); + calib_data->dig_T3 = (int16_t)BME280_CONCAT_BYTES(reg_data[5], reg_data[4]); + calib_data->dig_P1 = BME280_CONCAT_BYTES(reg_data[7], reg_data[6]); + calib_data->dig_P2 = (int16_t)BME280_CONCAT_BYTES(reg_data[9], reg_data[8]); + calib_data->dig_P3 = (int16_t)BME280_CONCAT_BYTES(reg_data[11], reg_data[10]); + calib_data->dig_P4 = (int16_t)BME280_CONCAT_BYTES(reg_data[13], reg_data[12]); + calib_data->dig_P5 = (int16_t)BME280_CONCAT_BYTES(reg_data[15], reg_data[14]); + calib_data->dig_P6 = (int16_t)BME280_CONCAT_BYTES(reg_data[17], reg_data[16]); + calib_data->dig_P7 = (int16_t)BME280_CONCAT_BYTES(reg_data[19], reg_data[18]); + calib_data->dig_P8 = (int16_t)BME280_CONCAT_BYTES(reg_data[21], reg_data[20]); + calib_data->dig_P9 = (int16_t)BME280_CONCAT_BYTES(reg_data[23], reg_data[22]); + calib_data->dig_H1 = reg_data[25]; + +} + +/*! + * @brief This internal API is used to parse the humidity calibration data + * and store it in device structure. + */ +static void parse_humidity_calib_data(const uint8_t *reg_data, struct bme280_dev *dev) +{ + struct bme280_calib_data *calib_data = &dev->calib_data; + int16_t dig_H4_lsb; + int16_t dig_H4_msb; + int16_t dig_H5_lsb; + int16_t dig_H5_msb; + + calib_data->dig_H2 = (int16_t)BME280_CONCAT_BYTES(reg_data[1], reg_data[0]); + calib_data->dig_H3 = reg_data[2]; + + dig_H4_msb = (int16_t)(int8_t)reg_data[3] * 16; + dig_H4_lsb = (int16_t)(reg_data[4] & 0x0F); + calib_data->dig_H4 = dig_H4_msb | dig_H4_lsb; + + dig_H5_msb = (int16_t)(int8_t)reg_data[5] * 16; + dig_H5_lsb = (int16_t)(reg_data[4] >> 4); + calib_data->dig_H5 = dig_H5_msb | dig_H5_lsb; + calib_data->dig_H6 = (int8_t)reg_data[6]; +} + +/*! + * @brief This internal API is used to identify the settings which the user + * wants to modify in the sensor. + */ +static uint8_t are_settings_changed(uint8_t sub_settings, uint8_t desired_settings) +{ + uint8_t settings_changed = FALSE; + + if (sub_settings & desired_settings) { + /* User wants to modify this particular settings */ + settings_changed = TRUE; + } else { + /* User don't want to modify this particular settings */ + settings_changed = FALSE; + } + + return settings_changed; +} + +/*! + * @brief This internal API is used to validate the device structure pointer for + * null conditions. + */ +static int8_t null_ptr_check(const struct bme280_dev *dev) +{ + int8_t rslt; + + if ((dev == NULL) || (dev->read == NULL) || (dev->write == NULL) || (dev->delay_ms == NULL)) { + /* Device structure pointer is not valid */ + rslt = BME280_E_NULL_PTR; + } else { + /* Device structure is fine */ + rslt = BME280_OK; + } + + return rslt; +} diff --git a/src/bme280/bme280.h b/src/bme280/bme280.h new file mode 100644 index 0000000..d7401ad --- /dev/null +++ b/src/bme280/bme280.h @@ -0,0 +1,240 @@ +/** + * Copyright (C) 2016 - 2017 Bosch Sensortec GmbH + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * Neither the name of the copyright holder nor the names of the + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER + * OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, + * OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE + * + * The information provided is believed to be accurate and reliable. + * The copyright holder assumes no responsibility + * for the consequences of use + * of such information nor for any infringement of patents or + * other rights of third parties which may result from its use. + * No license is granted by implication or otherwise under any patent or + * patent rights of the copyright holder. + * + * @file bme280.h + * @date 14 Feb 2018 + * @version 3.3.4 + * @brief + * + */ +/*! @file bme280.h + @brief Sensor driver for BME280 sensor */ +/*! + * @defgroup BME280 SENSOR API + * @{*/ +#ifndef BME280_H_ +#define BME280_H_ + +/*! CPP guard */ +#ifdef __cplusplus +extern "C" { +#endif + +/* Header includes */ +#include "bme280_defs.h" + +/*! + * @brief This API is the entry point. + * It reads the chip-id and calibration data from the sensor. + * + * @param[in,out] dev : Structure instance of bme280_dev + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +int8_t bme280_init(struct bme280_dev *dev); + +/*! + * @brief This API writes the given data to the register address + * of the sensor. + * + * @param[in] reg_addr : Register address from where the data to be written. + * @param[in] reg_data : Pointer to data buffer which is to be written + * in the sensor. + * @param[in] len : No of bytes of data to write.. + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +int8_t bme280_set_regs(uint8_t *reg_addr, const uint8_t *reg_data, uint8_t len, const struct bme280_dev *dev); + +/*! + * @brief This API reads the data from the given register address of the sensor. + * + * @param[in] reg_addr : Register address from where the data to be read + * @param[out] reg_data : Pointer to data buffer to store the read data. + * @param[in] len : No of bytes of data to be read. + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +int8_t bme280_get_regs(uint8_t reg_addr, uint8_t *reg_data, uint16_t len, const struct bme280_dev *dev); + +/*! + * @brief This API sets the oversampling, filter and standby duration + * (normal mode) settings in the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[in] desired_settings : Variable used to select the settings which + * are to be set in the sensor. + * + * @note : Below are the macros to be used by the user for selecting the + * desired settings. User can do OR operation of these macros for configuring + * multiple settings. + * + * Macros | Functionality + * -----------------------|---------------------------------------------- + * BME280_OSR_PRESS_SEL | To set pressure oversampling. + * BME280_OSR_TEMP_SEL | To set temperature oversampling. + * BME280_OSR_HUM_SEL | To set humidity oversampling. + * BME280_FILTER_SEL | To set filter setting. + * BME280_STANDBY_SEL | To set standby duration setting. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error. + */ +int8_t bme280_set_sensor_settings(uint8_t desired_settings, const struct bme280_dev *dev); + +/*! + * @brief This API gets the oversampling, filter and standby duration + * (normal mode) settings from the sensor. + * + * @param[in,out] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error. + */ +int8_t bme280_get_sensor_settings(struct bme280_dev *dev); + +/*! + * @brief This API sets the power mode of the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[in] sensor_mode : Variable which contains the power mode to be set. + * + * sensor_mode | Macros + * ---------------------|------------------- + * 0 | BME280_SLEEP_MODE + * 1 | BME280_FORCED_MODE + * 3 | BME280_NORMAL_MODE + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +int8_t bme280_set_sensor_mode(uint8_t sensor_mode, + const struct bme280_dev *dev); + +/*! + * @brief This API gets the power mode of the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * @param[out] sensor_mode : Pointer variable to store the power mode. + * + * sensor_mode | Macros + * ---------------------|------------------- + * 0 | BME280_SLEEP_MODE + * 1 | BME280_FORCED_MODE + * 3 | BME280_NORMAL_MODE + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +int8_t bme280_get_sensor_mode(uint8_t *sensor_mode, const struct bme280_dev *dev); + +/*! + * @brief This API performs the soft reset of the sensor. + * + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error. + */ +int8_t bme280_soft_reset(const struct bme280_dev *dev); + +/*! + * @brief This API reads the pressure, temperature and humidity data from the + * sensor, compensates the data and store it in the bme280_data structure + * instance passed by the user. + * + * @param[in] sensor_comp : Variable which selects which data to be read from + * the sensor. + * + * sensor_comp | Macros + * ------------|------------------- + * 1 | BME280_PRESS + * 2 | BME280_TEMP + * 4 | BME280_HUM + * 7 | BME280_ALL + * + * @param[out] comp_data : Structure instance of bme280_data. + * @param[in] dev : Structure instance of bme280_dev. + * + * @return Result of API execution status + * @retval zero -> Success / +ve value -> Warning / -ve value -> Error + */ +int8_t bme280_get_sensor_data(uint8_t sensor_comp, struct bme280_data *comp_data, struct bme280_dev *dev); + +/*! + * @brief This API is used to parse the pressure, temperature and + * humidity data and store it in the bme280_uncomp_data structure instance. + * + * @param[in] reg_data : Contains register data which needs to be parsed + * @param[out] uncomp_data : Contains the uncompensated pressure, temperature + * and humidity data. + */ +void bme280_parse_sensor_data(const uint8_t *reg_data, struct bme280_uncomp_data *uncomp_data); + +/*! + * @brief This API is used to compensate the pressure and/or + * temperature and/or humidity data according to the component selected by the + * user. + * + * @param[in] sensor_comp : Used to select pressure and/or temperature and/or + * humidity. + * @param[in] uncomp_data : Contains the uncompensated pressure, temperature and + * humidity data. + * @param[out] comp_data : Contains the compensated pressure and/or temperature + * and/or humidity data. + * @param[in] calib_data : Pointer to the calibration data structure. + * + * @return Result of API execution status. + * @retval zero -> Success / -ve value -> Error + */ +int8_t bme280_compensate_data(uint8_t sensor_comp, const struct bme280_uncomp_data *uncomp_data, + struct bme280_data *comp_data, struct bme280_calib_data *calib_data); + +#ifdef __cplusplus +} +#endif /* End of CPP guard */ +#endif /* BME280_H_ */ +/** @}*/ diff --git a/src/bme280/bme280_defs.h b/src/bme280/bme280_defs.h new file mode 100644 index 0000000..79fbdd1 --- /dev/null +++ b/src/bme280/bme280_defs.h @@ -0,0 +1,373 @@ +/** + * Copyright (C) 2016 - 2017 Bosch Sensortec GmbH + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * Neither the name of the copyright holder nor the names of the + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER + * OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, + * OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE + * + * The information provided is believed to be accurate and reliable. + * The copyright holder assumes no responsibility + * for the consequences of use + * of such information nor for any infringement of patents or + * other rights of third parties which may result from its use. + * No license is granted by implication or otherwise under any patent or + * patent rights of the copyright holder. + * + * @file bme280_defs.h + * @date 14 Feb 2018 + * @version 3.3.4 + * @brief + * + */ + +/*! @file bme280_defs.h + @brief Sensor driver for BME280 sensor */ +/*! + * @defgroup BME280 SENSOR API + * @brief + * @{*/ +#ifndef BME280_DEFS_H_ +#define BME280_DEFS_H_ + +/********************************************************/ +/* header includes */ +#ifdef __KERNEL__ +#include +#include +#else +#include +#include +#endif + +/********************************************************/ +/*! @name Common macros */ +/********************************************************/ + +#if !defined(UINT8_C) && !defined(INT8_C) +#define INT8_C(x) S8_C(x) +#define UINT8_C(x) U8_C(x) +#endif + +#if !defined(UINT16_C) && !defined(INT16_C) +#define INT16_C(x) S16_C(x) +#define UINT16_C(x) U16_C(x) +#endif + +#if !defined(INT32_C) && !defined(UINT32_C) +#define INT32_C(x) S32_C(x) +#define UINT32_C(x) U32_C(x) +#endif + +#if !defined(INT64_C) && !defined(UINT64_C) +#define INT64_C(x) S64_C(x) +#define UINT64_C(x) U64_C(x) +#endif + +/**@}*/ + +/**\name C standard macros */ +#ifndef NULL +#ifdef __cplusplus +#define NULL 0 +#else +#define NULL ((void *) 0) +#endif +#endif +/********************************************************/ + +#ifndef BME280_FLOAT_ENABLE +/* +默认采用整形，取消该注释代表采用浮点类型 +Integer is used by default, uncommenting this means using floating-point type +*/ +#define BME280_FLOAT_ENABLE +#endif + + +#ifndef BME280_FLOAT_ENABLE + +#ifndef BME280_64BIT_ENABLE +/* +采用32位系统，取消该注释代表采用64位系统 +Using a 32-bit system, uncommenting this means using a 64-bit system +*/ +/*#define BME280_64BIT_ENABLE*/ +#endif + +#endif + +#ifndef TRUE +#define TRUE UINT8_C(1) +#endif +#ifndef FALSE +#define FALSE UINT8_C(0) +#endif + +/**\name I2C addresses */ +#define BME280_I2C_ADDR_PRIM UINT8_C(0x76) +#define BME280_I2C_ADDR_SEC UINT8_C(0x77) + +/**\name BME280 chip identifier */ +#define BME280_CHIP_ID UINT8_C(0x60) + +/**\name Register Address */ +#define BME280_CHIP_ID_ADDR UINT8_C(0xD0) +#define BME280_RESET_ADDR UINT8_C(0xE0) +#define BME280_TEMP_PRESS_CALIB_DATA_ADDR UINT8_C(0x88) +#define BME280_HUMIDITY_CALIB_DATA_ADDR UINT8_C(0xE1) +#define BME280_PWR_CTRL_ADDR UINT8_C(0xF4) +#define BME280_CTRL_HUM_ADDR UINT8_C(0xF2) +#define BME280_CTRL_MEAS_ADDR UINT8_C(0xF4) +#define BME280_CONFIG_ADDR UINT8_C(0xF5) +#define BME280_DATA_ADDR UINT8_C(0xF7) + +/**\name API success code */ +#define BME280_OK INT8_C(0) + +/**\name API error codes */ +#define BME280_E_NULL_PTR INT8_C(-1) +#define BME280_E_DEV_NOT_FOUND INT8_C(-2) +#define BME280_E_INVALID_LEN INT8_C(-3) +#define BME280_E_COMM_FAIL INT8_C(-4) +#define BME280_E_SLEEP_MODE_FAIL INT8_C(-5) + +/**\name API warning codes */ +#define BME280_W_INVALID_OSR_MACRO INT8_C(1) + +/**\name Macros related to size */ +#define BME280_TEMP_PRESS_CALIB_DATA_LEN UINT8_C(26) +#define BME280_HUMIDITY_CALIB_DATA_LEN UINT8_C(7) +#define BME280_P_T_H_DATA_LEN UINT8_C(8) + +/**\name Sensor power modes */ +#define BME280_SLEEP_MODE UINT8_C(0x00) +#define BME280_FORCED_MODE UINT8_C(0x01) +#define BME280_NORMAL_MODE UINT8_C(0x03) + +/**\name Macro to combine two 8 bit data's to form a 16 bit data */ +#define BME280_CONCAT_BYTES(msb, lsb) (((uint16_t)msb << 8) | (uint16_t)lsb) + +#define BME280_SET_BITS(reg_data, bitname, data) \ + ((reg_data & ~(bitname##_MSK)) | \ + ((data << bitname##_POS) & bitname##_MSK)) +#define BME280_SET_BITS_POS_0(reg_data, bitname, data) \ + ((reg_data & ~(bitname##_MSK)) | \ + (data & bitname##_MSK)) + +#define BME280_GET_BITS(reg_data, bitname) ((reg_data & (bitname##_MSK)) >> \ + (bitname##_POS)) +#define BME280_GET_BITS_POS_0(reg_data, bitname) (reg_data & (bitname##_MSK)) + +/**\name Macros for bit masking */ +#define BME280_SENSOR_MODE_MSK UINT8_C(0x03) +#define BME280_SENSOR_MODE_POS UINT8_C(0x00) + +#define BME280_CTRL_HUM_MSK UINT8_C(0x07) +#define BME280_CTRL_HUM_POS UINT8_C(0x00) + +#define BME280_CTRL_PRESS_MSK UINT8_C(0x1C) +#define BME280_CTRL_PRESS_POS UINT8_C(0x02) + +#define BME280_CTRL_TEMP_MSK UINT8_C(0xE0) +#define BME280_CTRL_TEMP_POS UINT8_C(0x05) + +#define BME280_FILTER_MSK UINT8_C(0x1C) +#define BME280_FILTER_POS UINT8_C(0x02) + +#define BME280_STANDBY_MSK UINT8_C(0xE0) +#define BME280_STANDBY_POS UINT8_C(0x05) + +/**\name Sensor component selection macros + These values are internal for API implementation. Don't relate this to + data sheet.*/ +#define BME280_PRESS UINT8_C(1) +#define BME280_TEMP UINT8_C(1 << 1) +#define BME280_HUM UINT8_C(1 << 2) +#define BME280_ALL UINT8_C(0x07) + +/**\name Settings selection macros */ +#define BME280_OSR_PRESS_SEL UINT8_C(1) +#define BME280_OSR_TEMP_SEL UINT8_C(1 << 1) +#define BME280_OSR_HUM_SEL UINT8_C(1 << 2) +#define BME280_FILTER_SEL UINT8_C(1 << 3) +#define BME280_STANDBY_SEL UINT8_C(1 << 4) +#define BME280_ALL_SETTINGS_SEL UINT8_C(0x1F) + +/**\name Oversampling macros */ +#define BME280_NO_OVERSAMPLING UINT8_C(0x00) +#define BME280_OVERSAMPLING_1X UINT8_C(0x01) +#define BME280_OVERSAMPLING_2X UINT8_C(0x02) +#define BME280_OVERSAMPLING_4X UINT8_C(0x03) +#define BME280_OVERSAMPLING_8X UINT8_C(0x04) +#define BME280_OVERSAMPLING_16X UINT8_C(0x05) + +/**\name Standby duration selection macros */ +#define BME280_STANDBY_TIME_1_MS (0x00) +#define BME280_STANDBY_TIME_62_5_MS (0x01) +#define BME280_STANDBY_TIME_125_MS (0x02) +#define BME280_STANDBY_TIME_250_MS (0x03) +#define BME280_STANDBY_TIME_500_MS (0x04) +#define BME280_STANDBY_TIME_1000_MS (0x05) +#define BME280_STANDBY_TIME_10_MS (0x06) +#define BME280_STANDBY_TIME_20_MS (0x07) + +/**\name Filter coefficient selection macros */ +#define BME280_FILTER_COEFF_OFF (0x00) +#define BME280_FILTER_COEFF_2 (0x01) +#define BME280_FILTER_COEFF_4 (0x02) +#define BME280_FILTER_COEFF_8 (0x03) +#define BME280_FILTER_COEFF_16 (0x04) + +/*! + * @brief Interface selection Enums + */ +enum bme280_intf { + /*! SPI interface */ + BME280_SPI_INTF, + /*! I2C interface */ + BME280_I2C_INTF +}; + +/*! + * @brief Type definitions + */ +typedef int8_t (*bme280_com_fptr_t)(uint8_t dev_id, uint8_t reg_addr, + uint8_t *data, uint16_t len); + +typedef void (*bme280_delay_fptr_t)(uint32_t period); + +/*! + * @brief Calibration data + */ +struct bme280_calib_data { + /** + * @ Trim Variables + */ +/**@{*/ + uint16_t dig_T1; + int16_t dig_T2; + int16_t dig_T3; + uint16_t dig_P1; + int16_t dig_P2; + int16_t dig_P3; + int16_t dig_P4; + int16_t dig_P5; + int16_t dig_P6; + int16_t dig_P7; + int16_t dig_P8; + int16_t dig_P9; + uint8_t dig_H1; + int16_t dig_H2; + uint8_t dig_H3; + int16_t dig_H4; + int16_t dig_H5; + int8_t dig_H6; + int32_t t_fine; +/**@}*/ +}; + +/*! + * @brief bme280 sensor structure which comprises of temperature, pressure and + * humidity data + */ +#ifdef BME280_FLOAT_ENABLE +struct bme280_data { + /*! Compensated pressure */ + double pressure; + /*! Compensated temperature */ + double temperature; + /*! Compensated humidity */ + double humidity; +}; +#else +struct bme280_data { + /*! Compensated pressure */ + uint32_t pressure; + /*! Compensated temperature */ + int32_t temperature; + /*! Compensated humidity */ + uint32_t humidity; +}; +#endif /* BME280_USE_FLOATING_POINT */ + +/*! + * @brief bme280 sensor structure which comprises of uncompensated temperature, + * pressure and humidity data + */ +struct bme280_uncomp_data { + /*! un-compensated pressure */ + uint32_t pressure; + /*! un-compensated temperature */ + uint32_t temperature; + /*! un-compensated humidity */ + uint32_t humidity; +}; + +/*! + * @brief bme280 sensor settings structure which comprises of mode, + * oversampling and filter settings. + */ +struct bme280_settings { + /*! pressure oversampling */ + uint8_t osr_p; + /*! temperature oversampling */ + uint8_t osr_t; + /*! humidity oversampling */ + uint8_t osr_h; + /*! filter coefficient */ + uint8_t filter; + /*! standby time */ + uint8_t standby_time; +}; + +/*! + * @brief bme280 device structure + */ +struct bme280_dev { + /*! Chip Id */ + uint8_t chip_id; + /*! Device Id */ + uint8_t dev_id; + /*! SPI/I2C interface */ + enum bme280_intf intf; + /*! Read function pointer */ + bme280_com_fptr_t read; + /*! Write function pointer */ + bme280_com_fptr_t write; + /*! Delay function pointer */ + bme280_delay_fptr_t delay_ms; + /*! Trim data */ + struct bme280_calib_data calib_data; + /*! Sensor settings */ + struct bme280_settings settings; +}; + +#endif /* BME280_DEFS_H_ */ +/** @}*/ +/** @}*/ diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..ea22ffb --- /dev/null +++ b/src/main.c @@ -0,0 +1,247 @@ +/** + * + */ + + +#include "bme280/bme280.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define IIC_Dev "/dev/i2c-1" + +int file_descriptor; // maybe file descriptor? example had it as 'fd' + +int8_t check_file_exists(const char *filename) +{ + FILE *file; + file = fopen(filename, "r"); + if (file != NULL) + { + fclose(file); + return 1; + } + + return 0; +} + +void user_delay_ms(uint32_t period) +{ + usleep(period*1000); +} + +#ifdef BME280_FLOAT_ENABLE +double celsius_to_fahrenheit(double celsius) +{ + return (celsius * 1.8) + 32; +} + +double pascals_to_mbar(double pascals) +{ + return pascals / 100; +} +#else +uint32_t celsius_to_fahrenheit(uint32_t celsius) +{ + return (celsius * 1.8) + 32; +} + +uint32_t pascals_to_mbar(uint32_t pascals) +{ + return pascals / 100; +} +#endif + +int8_t user_i2c_read(uint8_t id, uint8_t reg_addr, uint8_t *data, uint16_t len) +{ + write(file_descriptor, ®_addr, 1); + read(file_descriptor, data, len); + return 0; +} + +int8_t user_i2c_write(uint8_t id, uint8_t reg_addr, uint8_t *data, uint16_t len) +{ + int8_t *buf; + buf = malloc(len +1); + buf[0] = reg_addr; + memcpy(buf +1, data, len); + write(file_descriptor, buf, len +1); + free(buf); + return 0; +} + +void print_sensor_data(struct bme280_data *sensor_readings_data) +{ +#ifdef BME280_FLOAT_ENABLE + double fahrenheit = celsius_to_fahrenheit(sensor_readings_data->temperature); + double celsius = sensor_readings_data->temperature; + double pascals = sensor_readings_data->pressure; + double millibars = pascals_to_mbar(sensor_readings_data->pressure); + double humidity = sensor_readings_data->humidity; + printf("%0.2f\xc2\xb0\x46 / %0.2f\xc2\xb0\x43, %0.2fPa, %0.2fmbar, %0.2f%% \r\n", fahrenheit, celsius, pascals, millibars, humidity); +#else + uint32_t fahrenheit = celsius_to_fahrenheit(sensor_readings_data->temperature); + uint32_t celsius = sensor_readings_data->temperature; + uint32_t pascals = sensor_readings_data->pressure; + uint32_t millibars = pascals_to_mbar(sensor_readings_data->pressure); + uint32_t humidity = sensor_readings_data->humidity; + printf("%ld\xc2\xb0\x46 / %ld\xc2\xb0\x43, %ldPa, %ldmbar, %ld%% \r\n", fahrenheit, celsius, pascals, millibars, humidity); +#endif +} + +int8_t save_data_to_json_file(struct bme280_data *sensor_readings_data) +{ + time_t rawtime = time(NULL); + struct tm *timeinfo; + char dateString[32]; + char timeString[32]; + char filename[100]; + char jsonBuffer[1024]; + FILE *jsonFilePtr; + + struct json_object *parsed_json; + struct json_object *latest_reading_object = json_object_new_object(); + struct json_object *temperature_object = json_object_new_object(); + struct json_object *pressure_object = json_object_new_object(); + + timeinfo = localtime(&rawtime); + strftime(dateString, 32, "%F", timeinfo); + strftime(timeString, 32, "%H_%M_%S", timeinfo); + //puts(dateString); + //time(&rawtime); + + snprintf(filename, sizeof(filename), "readings_%s.json", dateString); + + if (!check_file_exists(filename)) + { + printf("File for today does not exist! Creating... \n"); + FILE *jsonFile = fopen(filename, "w"); + fputs("{}", jsonFile); + fclose(jsonFile); + } + + jsonFilePtr = fopen(filename, "r+"); + if (jsonFilePtr == NULL) + { + sprintf("Failed to open %s", filename); + exit(1); + } + fread(jsonBuffer, 1024, 1, jsonFilePtr); +//printf("raw json read in: %s \n", jsonBuffer); + parsed_json = json_tokener_parse(jsonBuffer); + +//printf("json read in: %s \n", json_object_to_json_string(parsed_json)); + +#ifdef BME280_FLOAT_ENABLE + double fahrenheit = celsius_to_fahrenheit(sensor_readings_data->temperature); + double celsius = sensor_readings_data->temperature; + double pascals = sensor_readings_data->pressure; + double millibars = pascals_to_mbar(sensor_readings_data->pressure); + double humidity = sensor_readings_data->humidity; + + json_object_object_add(temperature_object, "celsius", json_object_new_double(celsius)); + json_object_object_add(temperature_object, "fahrenheit", json_object_new_double(fahrenheit)); + json_object_object_add(pressure_object, "pascals", json_object_new_double(pascals)); + json_object_object_add(pressure_object, "millibars", json_object_new_double(millibars)); + + json_object_object_add(latest_reading_object, "temperature", temperature_object); + json_object_object_add(latest_reading_object, "pressure", pressure_object); + json_object_object_add(latest_reading_object, "humidity_percent", json_object_new_double(humidity)); + + //json_object_object_add(parsed_json, "timeString", latest_reading_object); + + //fprintf(jsonFilePtr, "{\"temperature\":{\"celsius\":%0.2f,\"fahrenheit\":%0.2f}}", celsius, fahrenheit); +#else + uint32_t fahrenheit = celsius_to_fahrenheit(sensor_readings_data->temperature); + uint32_t celsius = sensor_readings_data->temperature; + uint32_t pascals = sensor_readings_data->pressure; + uint32_t millibars = pascals_to_mbar(sensor_readings_data->pressure); + uint32_t humidity = sensor_readings_data->humidity; + + json_object_object_add(temperature_object, "celsius", json_object_new_int(celsius)); + json_object_object_add(temperature_object, "fahrenheit", json_object_new_int(fahrenheit)); + + json_object_object_add(pressure_object, "pascals", json_object_new_int(pascals)); + json_object_object_add(pressure_object, "millibars", json_object_new_int(millibars)); + + json_object_object_add(latest_reading_object, "temperature", temperature_object); + json_object_object_add(latest_reading_object, "pressure", pressure_object); + json_object_object_add(latest_reading_object, "humidity_percent", json_object_new_int(humidity)); + + //json_object_object_add(parsed_json, "timeString", latest_reading_object); + + //fprintf(jsonFilePtr, "{\"temperature\":{\"celsius\":%ld,\"fahrenheit\":%ld}}", celsius, fahrenheit); +#endif + + json_object_object_add(parsed_json, timeString, latest_reading_object); + //fprintf(jsonFilePtr, json_object_to_json_string(parsed_json)); + fputs(json_object_to_json_string(parsed_json), jsonFilePtr); +printf("json to write out: %s \n", json_object_to_json_string(latest_reading_object)); +printf("new json to write out: %s \n", json_object_to_json_string(parsed_json)); + fclose(jsonFilePtr); + return 0; +} + +int8_t read_sensor_data_normal_mode(struct bme280_dev *dev) +{ + int8_t readings_result; + uint8_t settings_sel; + struct bme280_data sensor_readings_data; + + /* Recommended mode of operation: Indoor navigation */ + dev->settings.osr_h = BME280_OVERSAMPLING_1X; + dev->settings.osr_p = BME280_OVERSAMPLING_16X; + dev->settings.osr_t = BME280_OVERSAMPLING_2X; + dev->settings.filter = BME280_FILTER_COEFF_16; + dev->settings.standby_time = BME280_STANDBY_TIME_62_5_MS; + + settings_sel = BME280_OSR_PRESS_SEL; + settings_sel |= BME280_OSR_TEMP_SEL; + settings_sel |= BME280_OSR_HUM_SEL; + settings_sel |= BME280_STANDBY_SEL; + settings_sel |= BME280_FILTER_SEL; + readings_result = bme280_set_sensor_settings(settings_sel, dev); + readings_result = bme280_set_sensor_mode(BME280_NORMAL_MODE, dev); + readings_result = bme280_get_sensor_data(BME280_ALL, &sensor_readings_data, dev); + print_sensor_data(&sensor_readings_data); + //save_data_to_json_file(&sensor_readings_data); + + return readings_result; +} + +int main(int argc, char* argv[]) +{ + struct bme280_dev dev; + int8_t init_result = BME280_OK; + + if ((file_descriptor = open(IIC_Dev, O_RDWR)) < 0) { + printf("Failed to open the i2c bus %s", argv[1]); + exit(1); + } + if (ioctl(file_descriptor, I2C_SLAVE, 0x76) < 0) { + printf("Failed to acquire bus access and/or talk to slave.\n"); + exit(1); + } + + dev.dev_id = BME280_I2C_ADDR_PRIM; //0x76 + //dev.dev_id = BME280_I2C_ADDR_SEC; //0x77 + dev.intf = BME280_I2C_INTF; + dev.read = user_i2c_read; + dev.write = user_i2c_write; + dev.delay_ms = user_delay_ms; + + init_result = bme280_init(&dev); + printf("\r\n BME280 Init Result is:%d \r\n", init_result); + + read_sensor_data_normal_mode(&dev); + + return 0; +} diff --git a/src/second.c b/src/second.c new file mode 100644 index 0000000..aa50e7e --- /dev/null +++ b/src/second.c @@ -0,0 +1,125 @@ +/** + * + */ + +#include "bme280/bme280.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define IIC_Dev "/dev/i2c-1" + +int file_descriptor; // maybe file descriptor? example had it as 'fd' + +void user_delay_ms(uint32_t period) +{ + usleep(period*1000); +} + +double celsius_to_fahrenheit(double celsius) +{ + return (celsius * 1.8) + 32; +} + +double pascals_to_mbar(double pascals) +{ + return pascals / 100; +} + +int8_t user_i2c_read(uint8_t id, uint8_t reg_addr, uint8_t *data, uint16_t len) +{ + write(file_descriptor, ®_addr, 1); + read(file_descriptor, data, len); + return 0; +} + +int8_t user_i2c_write(uint8_t id, uint8_t reg_addr, uint8_t *data, uint16_t len) +{ + int8_t *buf; + buf = malloc(len +1); + buf[0] = reg_addr; + memcpy(buf +1, data, len); + write(file_descriptor, buf, len +1); + free(buf); + return 0; +} + +void print_sensor_data(struct bme280_data *sensor_readings_data) +{ +printf("print_sensor_data\n\n"); +#ifdef BME280_FLOAT_ENABLE + double fahrenheit = celsius_to_fahrenheit(sensor_readings_data->temperature); + double celsius = sensor_readings_data->temperature; + double pascals = sensor_readings_data->pressure; + double millibars = pascals_to_mbar(sensor_readings_data->pressure); + double humidity = sensor_readings_data->humidity; + printf("%0.2f\xc2\xb0\x46 / %0.2f\xc2\xb0\x43, %0.2fPa, %0.2fmbar, %0.2f%% \r\n", fahrenheit, celsius, pascals, millibars, humidity); +#else + uint32_t fahrenheit = celsius_to_fahrenheit(sensor_readings_data->temperature); + uint32_t celsius = sensor_readings_data->temperature; + uint32_t pascals = sensor_readings_data->pressure; + uint32_t millibars = pascals_to_mbar(sensor_readings_data->pressure); + uint32_t humidity = sensor_readings_data->humidity; + printf("%ld\xc2\xb0\x46 / %ld\xc2\xb0\x43, %ldPa, %ldmbar, %ld%% \r\n", fahrenheit, celsius, pascals, millibars, humidity); +#endif +} + +int8_t read_sensor_data_normal_mode(struct bme280_dev *dev) +{ + int8_t readings_result; + uint8_t settings_sel; + struct bme280_data sensor_readings_data; +printf("read_sensor_data_normal_mode\n\n"); + /* Recommended mode of operation: Indoor navigation */ + dev->settings.osr_h = BME280_OVERSAMPLING_1X; + dev->settings.osr_p = BME280_OVERSAMPLING_16X; + dev->settings.osr_t = BME280_OVERSAMPLING_2X; + dev->settings.filter = BME280_FILTER_COEFF_16; + dev->settings.standby_time = BME280_STANDBY_TIME_62_5_MS; + + settings_sel = BME280_OSR_PRESS_SEL; + settings_sel |= BME280_OSR_TEMP_SEL; + settings_sel |= BME280_OSR_HUM_SEL; + settings_sel |= BME280_STANDBY_SEL; + settings_sel |= BME280_FILTER_SEL; + readings_result = bme280_set_sensor_settings(settings_sel, dev); + readings_result = bme280_set_sensor_mode(BME280_NORMAL_MODE, dev); + readings_result = bme280_get_sensor_data(BME280_ALL, &sensor_readings_data, dev); + print_sensor_data(&sensor_readings_data); + //save_data_to_csv_file(&sensor_readings_data); + + return readings_result; +} + +int main(int argc, char* argv[]) +{ + struct bme280_dev dev; + int8_t init_result = BME280_OK; + + dev.dev_id = BME280_I2C_ADDR_PRIM; //0x76 + //dev.dev_id = BME280_I2C_ADDR_SEC; //0x77 + dev.intf = BME280_I2C_INTF; + dev.read = user_i2c_read; + dev.write = user_i2c_write; + dev.delay_ms = user_delay_ms; +printf("starting up\n\n"); + init_result = bme280_init(&dev); +//printf("got init_result\n"); + //if (init_result != 0) { +// printf("\n\nBME280 Init Result is: %d\n\n", init_result); + // return 1; + //} +//printf("before read sensor data\n\n"); +// read_sensor_data_normal_mode(&dev); + + printf("Recorded readings.\n\n"); + + return 0; +} +