added some comments to clarify things

2026-04-06 11:16:58 -06:00
parent 25905198c6
commit cc1500c426
1 changed files with 4 additions and 3 deletions
@@ -35,7 +35,8 @@ int8_t check_file_exists(const char *filename)

 void user_delay_ms(uint32_t period)
 {
-  usleep(period*1000);
+    //usleep(period*1000); // if using gnu99
+    sleep(period*1000); // if using c99
 }

 #ifdef BME280_FLOAT_ENABLE
@@ -231,8 +232,8 @@ int main(int argc, char* argv[])
        exit(1);
    }

-    dev.dev_id = BME280_I2C_ADDR_PRIM; //0x76
-    //dev.dev_id = BME280_I2C_ADDR_SEC; //0x77
+    //dev.dev_id = BME280_I2C_ADDR_PRIM; //0x76 (if orange/pin 5 is connected to ground on Pi)
+    dev.dev_id = BME280_I2C_ADDR_SEC; //0x77 (if orange/pin 5 is connected to 3.3V on Pi)
    dev.intf = BME280_I2C_INTF;
    dev.read = user_i2c_read;
    dev.write = user_i2c_write;