Add bme280 library

platformio.ini

@@ -8,7 +8,10 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[env:miniatmega328]
+[env:pro16MHzatmega328]
 platform = atmelavr
-board = miniatmega328
-framework = arduino
+board = pro16MHzatmega328
+monitor_speed = 115200
+lib_deps =
+    https://github.com/Sylaina/bme280.git
+

src/main.c

@@ -0,0 +1,39 @@
+/**
+ * Copyright (C) PlatformIO <contact@platformio.org>
+ * See LICENSE for details.
+ */
+
+#include <avr/io.h>
+#include <util/delay.h>
+
+#include "bme280.h"
+#include <stdio.h>
+
+int main(void)
+{
+    // make the LED pin an output for PORTB5
+    DDRB = 1 << 5;
+
+    float temp = 0.0;
+    float pressure = 0.0;
+    float humidity = 0.0;
+
+    bme280_init(0);
+
+    temp = bme280_readTemperature(0);
+    pressure = bme280_readPressure(0);
+    humidity = bme280_readHumidity(0);
+
+
+    while (1)
+    {
+        _delay_ms(1000);
+
+        printf("Temp: %f\tPressure: %f\tHumidity: %f\n", temp, pressure, humidity);
+
+        // toggle the LED
+        PORTB ^= 1 << 5;
+    }
+
+    return 0;
+}