Adding appBME280 to M5Stack-SAM, APPS and GFX_MENU, to read from a Grove - Barometer Sensor.

Author: mitag

M5Stack-SAM/APPS.ino

@@ -33,7 +33,6 @@ void appBLEBaecon(){
   menuUpdate(menuidx, menulock);  
 }
 
-
 void appDHT12(){
   menuDrawMenu(F("DHT12"),F(""),F("ESC"),F(""),sys_menucolor,sys_windowcolor,sys_menutextcolor);
   M5.Lcd.drawString(F("TEMPERATURE"),30,80,2);
@@ -60,6 +59,37 @@ void appDHT12(){
   menuUpdate(menuidx, menulock);  
 }
 
+
+void appBME280(){
+  menuDrawMenu(F("BME280"),F(""),F("ESC"),F(""),sys_menucolor,sys_windowcolor,sys_menutextcolor);
+  M5.Lcd.drawString(F("TEMPERATURE"),30,60,2);
+  M5.Lcd.drawString(F("°C"),250,60,2);
+  M5.Lcd.drawString(F("HUMIDITY"),30,120,2);
+  M5.Lcd.drawString(F("%RH"),250,120,2);
+  M5.Lcd.drawString(F("PRESSURE"),30,180,2);
+  M5.Lcd.drawString(F("hPa"),250,180,2);
+  menuidx = 1;
+  menulock = 0;
+  M5.Lcd.setTextColor(sys_menutextcolor, sys_windowcolor);
+  while(M5.BtnB.wasPressed()){
+    M5.update();
+  }  
+  while(!M5.BtnB.wasPressed()){
+    M5.update();
+    if(millis()-tmp_tmr > 1000){
+      tmp_tmr = millis();
+      float tmp_temp = bme280.readTemperature();
+      float tmp_humi = bme280.readHumidity();
+      float tmp_pres = (bme280.readPressure()/100.0F);
+      //menuWindowClr(sys_windowcolor);
+      M5.Lcd.drawFloat(tmp_temp, 1, 140, 40, 6);
+      M5.Lcd.drawFloat(tmp_humi, 1, 140, 100, 6);
+      M5.Lcd.drawFloat(tmp_pres, 1, 140, 160, 6);
+    }
+  }
+  menuUpdate(menuidx, menulock);  
+}
+
 void appStopky(){
   boolean tmp_run = false;
   float tmp_sec = 0;

M5Stack-SAM/GFX_MENU.ino

@@ -112,7 +112,7 @@ void menuSystemLevel(byte inmenuidx){
 
 void menuAplikaceLevel(byte inmenuidx){
   menuidxmin = 0;
-  menuidxmax = 4;
+  menuidxmax = 5;
   switch (inmenuidx) {
     case 0:
       menuIsMenu = LOW;
@@ -135,6 +135,11 @@ void menuAplikaceLevel(byte inmenuidx){
       windowPrintInfoText(F("BLE Beacon SIMULATOR"),sys_menutextcolor);
       break;
     case 4:
+      menuIsMenu = LOW;
+      menuWindowClr(sys_windowcolor);
+      windowPrintInfoText(F("BME280"),sys_menutextcolor);
+      break;
+    case 5:
       menuIsMenu = LOW;
       menuWindowClr(sys_windowcolor);
       windowPrintInfoText(F("RETURN"),sys_menutextcolor);
@@ -178,6 +183,9 @@ void menuRunApp(byte inmenuidx, byte inmenulock){
     appBLEBaecon();
   }
   if(inmenulock==1 and inmenuidx==4){
+    appBME280();
+  }
+  if(inmenulock==1 and inmenuidx==5){
       menuidx = 1;
       menulock = 0;
       menuUpdate(menuidx, menulock);        

M5Stack-SAM/M5Stack-SAM.ino

@@ -1,12 +1,18 @@
 #include <M5Stack.h>
 #include "EEPROM.h"
 #include "utility/DHT12.h"
+#include <Adafruit_Sensor.h>			   	// appBME280
+#include <Adafruit_BME280.h>			   	// appBME280
 #include <Wire.h>
 #include "SimpleBeacon.h"
 
 SimpleBeacon ble;
 DHT12 dht12;
 
+#define SEALEVELPRESSURE_HPA (1013.25)		// appBME280
+Adafruit_BME280 bme280; 				    // appBME280  
+bool status;  							  	// appBME280
+
 #define TFT_GREY 0x5AEB
 #define TFT_BROWN 0x38E0
 
@@ -29,6 +35,13 @@ unsigned long tmp_tmr = 0;
 
 void setup(void) {
   Serial.begin(115200);
+  
+ status = bme280.begin(0x76);  
+// if (!status) {  
+//    Serial.println("Could not find a valid BME280 sensor, check wiring!");  
+//    while (1);  
+// }  
+  
 
   if (!EEPROM.begin(EEPROM_SIZE))
   {