Add heltec rc32 board

variants/heltec_rc32/HeltecRC32Board.cpp

@@ -0,0 +1,66 @@
+#include "HeltecRC32Board.h"
+
+void HeltecRC32Board::begin() {
+  ESP32Board::begin();
+
+  pinMode(PIN_ADC_CTRL, OUTPUT);
+  digitalWrite(PIN_ADC_CTRL, !ADC_CTRL_ENABLED);
+
+#ifdef SENSOR_RST_PIN
+  pinMode(SENSOR_RST_PIN, OUTPUT);
+  digitalWrite(SENSOR_RST_PIN, HIGH);
+#endif
+
+#ifdef LED_POWER
+  pinMode(LED_POWER, OUTPUT);
+  digitalWrite(LED_POWER, LOW);
+#endif
+
+  periph_power.begin();
+  vext_power.begin();
+
+  esp_reset_reason_t reason = esp_reset_reason();
+  if (reason == ESP_RST_DEEPSLEEP) {
+    long wakeup_source = esp_sleep_get_ext1_wakeup_status();
+    if (wakeup_source & (1L << P_LORA_DIO_1)) {
+      startup_reason = BD_STARTUP_RX_PACKET;
+    }
+
+    rtc_gpio_hold_dis((gpio_num_t)P_LORA_NSS);
+    rtc_gpio_deinit((gpio_num_t)P_LORA_DIO_1);
+  }
+}
+
+void HeltecRC32Board::powerOff() {
+  enterDeepSleep(0);
+}
+
+void HeltecRC32Board::onBeforeTransmit() {
+  digitalWrite(P_LORA_TX_LED, HIGH);
+}
+
+void HeltecRC32Board::onAfterTransmit() {
+  digitalWrite(P_LORA_TX_LED, LOW);
+}
+
+uint16_t HeltecRC32Board::getBattMilliVolts() {
+  analogReadResolution(12);
+  digitalWrite(PIN_ADC_CTRL, ADC_CTRL_ENABLED);
+  delay(10);
+  uint32_t raw = 0;
+  for (int i = 0; i < 8; i++) {
+    raw += analogReadMilliVolts(PIN_VBAT_READ);
+  }
+  raw = raw / 8;
+
+  return (adc_mult * raw);
+}
+
+bool HeltecRC32Board::setAdcMultiplier(float multiplier) {
+  adc_mult = multiplier == 0.0f ? ADC_MULTIPLIER : multiplier;
+  return true;
+}
+
+const char* HeltecRC32Board::getManufacturerName() const {
+  return "Heltec RC32";
+}