Files
MeshCore/variants/heltec_e290/HeltecE290Board.cpp
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

42 lines
1.1 KiB
C++

#include "HeltecE290Board.h"
#include <helpers/ESP32GpioHold.h>
void HeltecE290Board::begin() {
ESP32Board::begin();
pinMode(PIN_ADC_CTRL, OUTPUT);
digitalWrite(PIN_ADC_CTRL, LOW); // Initially inactive
periph_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 & (1 << P_LORA_DIO_1)) { // 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_1);
}
}
uint16_t HeltecE290Board::getBattMilliVolts() {
analogReadResolution(10);
digitalWrite(PIN_ADC_CTRL, HIGH);
uint32_t raw = 0;
for (int i = 0; i < 8; i++) {
raw += analogRead(PIN_VBAT_READ);
}
raw = raw / 8;
digitalWrite(PIN_ADC_CTRL, LOW);
return calibrateBatteryMillivolts((5.42 * (3.3 / 1024.0) * raw) * 1000);
}
const char* HeltecE290Board::getManufacturerName() const {
return "Heltec E290";
}