113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
#include "HeltecV4R8Board.h"
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// Expansion Kit V2 control-pin notes (kept here beside the shared-reset
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// sequencing): display/touch I2C is SDA 17 / SCL 18; GPIO 21 is the shared
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// LCD_RESET / TP_RESET line; GPIO 44 drives the active-high backlight. The
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// optional R13 touch interrupt lands on GPIO 43, which is also ESP32-S3 U0TXD,
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// so production builds deliberately poll touch and do not define PIN_TOUCH_INT.
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void HeltecV4R8Board::begin() {
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ESP32Board::begin();
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periph_power.begin();
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periph_power.claim(); // R8 VEXT also feeds the LoRa antenna boost rail.
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loRaFEMControl.init();
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#ifdef PIN_TOUCH_RST
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pinMode(PIN_TOUCH_RST, OUTPUT);
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digitalWrite(PIN_TOUCH_RST, HIGH);
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delay(10);
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digitalWrite(PIN_TOUCH_RST, LOW);
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delay(100);
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digitalWrite(PIN_TOUCH_RST, HIGH);
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#endif
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esp_reset_reason_t reason = esp_reset_reason();
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if (reason == ESP_RST_DEEPSLEEP) {
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long wakeup_source = esp_sleep_get_ext1_wakeup_status();
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if (wakeup_source & (1 << P_LORA_DIO_1)) {
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startup_reason = BD_STARTUP_RX_PACKET;
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}
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rtc_gpio_hold_dis((gpio_num_t)P_LORA_NSS);
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rtc_gpio_deinit((gpio_num_t)P_LORA_DIO_1);
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}
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}
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void HeltecV4R8Board::onBeforeTransmit(void) {
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digitalWrite(P_LORA_TX_LED, HIGH);
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loRaFEMControl.setTxModeEnable();
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}
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void HeltecV4R8Board::onAfterTransmit(void) {
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digitalWrite(P_LORA_TX_LED, LOW);
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loRaFEMControl.setRxModeEnable();
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}
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void HeltecV4R8Board::powerOff() {
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ESP32Board::powerOff();
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}
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void HeltecV4R8Board::shutdownPeripherals() {
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ESP32Board::shutdownPeripherals();
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loRaFEMControl.setSleepModeEnable();
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digitalWrite(P_LORA_PA_POWER, LOW);
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rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_POWER);
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periph_power.release(); // Drop the permanent antenna-boost/VEXT claim from begin().
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}
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uint16_t HeltecV4R8Board::getBattMilliVolts() {
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analogReadResolution(12);
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uint32_t raw = 0;
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for (int i = 0; i < 8; i++) {
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raw += analogReadMilliVolts(PIN_VBAT_READ);
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}
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raw = raw / 8;
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return (adc_mult * raw);
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}
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bool HeltecV4R8Board::isExternalPowered() {
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// R8 has no MCU-connected VBUS/charger-status pin. A USB host is definitive;
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// otherwise use the calibrated battery voltage as a best-effort estimate.
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if (isUsbHostConnected()) return true;
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const uint32_t now = millis();
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if (!power_voltage_sampled || uint32_t(now - last_power_check_ms) >= 5000) {
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last_power_check_ms = now;
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power_voltage_sampled = true;
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// Like Meshtastic's analog power detection, enter above a full Li-ion cell
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// plus 10 mV. Release at 4.20 V to reduce display-profile chatter. This can
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// miss a charger while the battery is low; it is not a charging-status flag.
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const uint16_t millivolts = getBattMilliVolts();
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voltage_external_power = millivolts > (voltage_external_power ? 4200 : 4210);
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}
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return voltage_external_power;
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}
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const char* HeltecV4R8Board::getManufacturerName() const {
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#ifdef HELTEC_V4_R8_TFT
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return "Heltec V4 R8 TFT";
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#else
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return "Heltec V4 R8 OLED";
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#endif
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}
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bool HeltecV4R8Board::setLoRaFemLnaEnabled(bool enable) {
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if (!loRaFEMControl.isLnaCanControl()) return false;
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loRaFEMControl.setLNAEnable(enable);
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loRaFEMControl.setRxModeEnable();
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return true;
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}
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bool HeltecV4R8Board::canControlLoRaFemLna() const {
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return loRaFEMControl.isLnaCanControl();
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}
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bool HeltecV4R8Board::isLoRaFemLnaEnabled() const {
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return loRaFEMControl.isLNAEnabled();
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}
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