Support for Elecrow Thinknode M2

variants/thinknode_m2/ThinknodeM2Board.cpp

@@ -0,0 +1,32 @@
+#include "ThinknodeM2Board.h"
+
+
+
+void ThinknodeM2Board::begin() {
+    ESP32Board::begin();
+    pinMode(PIN_VEXT_EN, OUTPUT); // init display
+    digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE); // pin needs to be high
+    delay(10); 
+    digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE); // need to do this twice. do not know why..
+    pinMode(PIN_STATUS_LED, OUTPUT); // init power led    
+  }
+
+  void ThinknodeM2Board::enterDeepSleep(uint32_t secs, int pin_wake_btn) {
+    esp_deep_sleep_start();
+  }
+
+  void ThinknodeM2Board::powerOff()  {
+    enterDeepSleep(0);
+  }
+
+  uint16_t ThinknodeM2Board::getBattMilliVolts()  {
+    analogReadResolution(12);
+    delay(10);
+    float volts = (analogRead(PIN_VBAT_READ) * ADC_MULTIPLIER * AREF_VOLTAGE) / 4096;
+    analogReadResolution(10);
+    return volts * 1000;
+  }
+
+  const char* ThinknodeM2Board::getManufacturerName() const {
+    return "Elecrow ThinkNode M2";
+  }