adding stuff from pi

.gitignore

@@ -1,24 +0,0 @@
-### Project Specific
-# Files
-*.a
-*.o
-*.log
-
-# Directories
-
-### Editor Specific
-# Files
-temperatureRecorder.sublime-project
-temperatureRecorder.sublime-workspace
-
-# Directories
-.idea
-.vscode
-
-### System Specific
-# Files
-.DS_Store
-Thumbs.db
-
-# Directories
-__MACOSX

Makefile

@@ -3,20 +3,20 @@ 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}
+	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}
+	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}
+	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}
+	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}
+	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}
+	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 !\(.gitignore\) $(BIN_DEBUG_DIR)/*
 	rm -rf -v !\(.gitignore\) $(RELEASE_DIR)/*
-	rm -rf -v !\(.gitignore\) $(BIN_RELEASE_DIR)/*

bin/Debug/.gitignore

@@ -1,2 +0,0 @@
-*
-!.gitignore

bin/Release/.gitignore

@@ -1,2 +0,0 @@
-*
-!.gitignore

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 } }

src/jsontest.c

@@ -1,100 +0,0 @@
-/**
- * 
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <time.h>
-#include <json-c/json_object.h>
-#include <json-c/json_tokener.h>
-
-int8_t check_file_exists(const char *filename)
-{
-    FILE *file;
-    file = fopen(filename, "r");
-    if (file != NULL)
-    {
-        fclose(file);
-        return 1;
-    }
-
-    return 0;
-}
-
-int main(int argc, char* argv[])
-{
-    time_t rawtime = time(NULL);
-    struct tm *timeinfo;
-    char dateString[32];
-    char timeString[32];
-    char filename[100];
-    char jsonBuffer[1024];
-    //char jsonStrOutput[4096];
-    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, "%F_%H-%M-%S", timeinfo);
-
-    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)
-    {
-        printf("Failed to open %s for reading...\n", filename);
-        exit(1);
-    }
-    fread(jsonBuffer, 1024, 1, jsonFilePtr);
-    fclose(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_ext(parsed_json, JSON_C_TO_STRING_PRETTY));
-
-    double fahrenheit = (23 * 1.8) + 32;
-    double humidity = 100 - 80.82;
-
-    json_object_object_add(temperature_object, "fahrenheit", json_object_new_double(fahrenheit));
-
-    json_object_object_add(latest_reading_object, "temperature", temperature_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);
-
-    printf("json to write out: %s\n", json_object_to_json_string_ext(latest_reading_object, JSON_C_TO_STRING_PRETTY));
-    printf("new json to write out: %s\n", json_object_to_json_string_ext(parsed_json, JSON_C_TO_STRING_PRETTY));
-
-    //uint32_t jsonStrSize = sizeof(json_object_to_json_string_ext(parsed_json, JSON_C_TO_STRING_PRETTY));
-    //printf("jsonStrSize %i\n", jsonStrSize);
-    //char jsonStrOutput[] = json_object_to_json_string_ext(parsed_json, JSON_C_TO_STRING_PRETTY);
-
-    jsonFilePtr = fopen(filename, "w");
-    if (jsonFilePtr == NULL)
-    {
-        printf("Failed to open %s for writing...\n", filename);
-        exit(1);
-    }
-    fputs(json_object_to_json_string_ext(parsed_json, JSON_C_TO_STRING_PRETTY), jsonFilePtr);
-    //fwrite(json_object_to_json_string_ext(parsed_json), 1, jsonStrSize, jsonFilePtr);
-    fclose(jsonFilePtr);
-
-    return 0;
-}

src/main.c

@@ -13,6 +13,8 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <time.h>
+#include <json-c/json_object.h>
+#include <json-c/json_tokener.h>
 
 #define IIC_Dev  "/dev/i2c-1"
 
@@ -36,6 +38,7 @@ 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;
@@ -45,6 +48,17 @@ 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)
 {
@@ -83,44 +97,96 @@ void print_sensor_data(struct bme280_data *sensor_readings_data)
 #endif
 }
 
-int8_t save_data_to_csv_file(struct bme280_data *sensor_readings_data)
+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 datetimeString[32];
+    char timeString[32];
     char filename[100];
-    FILE *csvFilePtr;
+    char jsonBuffer[1024];
+    FILE *jsonFilePtr;
 
-    double celsius = sensor_readings_data->temperature;
+    struct json_object *parsed_json;
-    double fahrenheit = celsius_to_fahrenheit(sensor_readings_data->temperature);
+    struct json_object *latest_reading_object = json_object_new_object();
-    double pascals = sensor_readings_data->pressure;
+    struct json_object *temperature_object = json_object_new_object();
-    double millibars = pascals_to_mbar(sensor_readings_data->pressure);
+    struct json_object *pressure_object = json_object_new_object();
-    double humidity = sensor_readings_data->humidity;
 
     timeinfo = localtime(&rawtime);
     strftime(dateString, 32, "%F", timeinfo);
-    strftime(datetimeString, 32, "%F %H:%M:%S", timeinfo);
+    strftime(timeString, 32, "%H_%M_%S", timeinfo);
+    //puts(dateString);
+    //time(&rawtime);
 
-    snprintf(filename, sizeof(filename), "/home/pi/readings/readings_%s.csv", dateString);
+    snprintf(filename, sizeof(filename), "readings_%s.json", dateString);
 
     if (!check_file_exists(filename))
     {
         printf("File for today does not exist! Creating... \n");
-        FILE *csvFile = fopen(filename, "w");
+        FILE *jsonFile = fopen(filename, "w");
-        fputs("Date,Celsius,Fahrenheit,Pascals,Millibars,Humidity Percent\n", csvFile);
+        fputs("{}", jsonFile);
-        fclose(csvFile);
+        fclose(jsonFile);
     }
 
-    csvFilePtr = fopen(filename, "a");
+    jsonFilePtr = fopen(filename, "r+");
-    if (csvFilePtr == NULL)
+    if (jsonFilePtr == NULL)
     {
-        printf("Failed to open %s for writing...\n", filename);
+        sprintf("Failed to open %s", filename);
         exit(1);
     }
-    fprintf(csvFilePtr, "%s,%0.5f,%0.5f,%0.5f,%0.5f,%0.5f\n", datetimeString, celsius, fahrenheit, pascals, millibars, humidity);
+    fread(jsonBuffer, 1024, 1, jsonFilePtr);
-    fclose(csvFilePtr);
+//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;
 }
 
@@ -145,8 +211,8 @@ int8_t read_sensor_data_normal_mode(struct bme280_dev *dev)
     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);
+    print_sensor_data(&sensor_readings_data);
-    save_data_to_csv_file(&sensor_readings_data);
+    //save_data_to_json_file(&sensor_readings_data);
 
     return readings_result;
 }
@@ -173,11 +239,9 @@ int main(int argc, char* argv[])
     dev.delay_ms = user_delay_ms;
 
     init_result = bme280_init(&dev);
-    printf("\n\nBME280 Init Result is: %d\n\n", init_result);
+    printf("\r\n BME280 Init Result is:%d \r\n", init_result);
 
     read_sensor_data_normal_mode(&dev);
     
-    printf("Recorded readings.\n\n");
-
     return 0;
 }

src/second.c

@@ -0,0 +1,125 @@
+/**
+ *
+ */
+
+#include "bme280/bme280.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <linux/i2c-dev.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <time.h>
+
+#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, &reg_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;
+}
+