Environmental Sensing Service

Implements the BLE Environmental Sensing Service.

When subscribing to one of the characteristics, the BME680 gets triggered every 3 seconds to produce a new measurement. I chose 3 seconds as this will also the the rate at which a future BSEC MR will read data from the sensor.

Together with this https://phyphox.org/ "experiment" you can get graphs on your phone:

epicardium/ble/ble.c

@@ -69,6 +69,7 @@ extern void StackInit(void);
 extern void bleuart_init(void);
 extern void bleFileTransfer_init(void);
 extern void bleCard10_init(void);
+extern void bleESS_init(void);
 extern void BbBleDrvSetTxPower(int8_t power);
 
 /*************************************************************************************************/
@@ -432,6 +433,7 @@ void vBleTask(void *pvParameters)
 	bleuart_init();
 	bleFileTransfer_init();
 	bleCard10_init();
+	bleESS_init();
 
 	lasttick = xTaskGetTickCount();