Files
MeshCore/variants/heltec_v2/HeltecV2Board.h
T
mikecarper ab6412e73c Add persistent battery ADC calibration across boards
Add meter-reference calibration with saved ADC corrections, checked persistence and rollback. Preserve existing board coefficients and nRF52 voltage policy, and merge the Mini Repeater feature gates.

Validation: 69 focused tests, hosted documentation checks, and four firmware builds passed. Mini Repeater retains calibration and its existing filesystem with 376 flash bytes free; earlier Mini Sensor size failures remain documented.
2026-10-22 18:56:32 -07:00

50 lines
1.2 KiB
C++

#pragma once
#include <helpers/ESP32GpioHold.h>
#include <Arduino.h>
#include <helpers/ESP32Board.h>
// built-ins
#define PIN_VBAT_READ 37
#define PIN_LED_BUILTIN 25
class HeltecV2Board : public ESP32Board {
public:
void begin() {
ESP32Board::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 & (1 << P_LORA_DIO_0)) { // received a LoRa packet (while in deep sleep)
startup_reason = BD_STARTUP_RX_PACKET;
}
mesh::esp32::releaseRtcGpioIfSupported((gpio_num_t)P_LORA_NSS);
mesh::esp32::deinitRtcGpioIfSupported((gpio_num_t)P_LORA_DIO_0);
}
}
bool supportsBatteryCalibration() const override { return true; }
uint16_t getBattMilliVolts() override {
analogReadResolution(10);
uint32_t raw = 0;
for (int i = 0; i < 8; i++) {
raw += analogRead(PIN_VBAT_READ);
}
raw = raw / 8;
return calibrateBatteryMillivolts((1.98 * (2 / 1024.0) * raw) * 1000);
}
const char* getManufacturerName() const override {
return "Heltec V2";
}
uint32_t getIRQGpio() override {
return P_LORA_DIO_0; // default for SX1276
}
};