139 lines
5.2 KiB
C++
139 lines
5.2 KiB
C++
#include "HeltecV4Board.h"
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void HeltecV4Board::begin() {
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ESP32Board::begin();
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#if defined(PIN_ADC_CTRL) && PIN_ADC_CTRL >= 0
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pinMode(PIN_ADC_CTRL, OUTPUT);
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digitalWrite(PIN_ADC_CTRL, LOW); // Initially inactive
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#endif // V4-R8: no ADC-control MOSFET — the battery divider is read directly
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loRaFEMControl.init();
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#if defined(HELTEC_V4_EXPANSION_IO_PIN) && !defined(HELTEC_LORA_V4_R8)
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pinMode(HELTEC_V4_EXPANSION_IO_PIN, INPUT_PULLUP);
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#endif
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#if defined(HELTEC_LORA_V4_R8) && defined(PIN_SD_CS)
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// Park the shared-FSPI micro-SD's chip-select HIGH before LGFX starts
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// driving the bus (display.begin + logo blit run before the first
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// SD.begin): GPIO3 is a strapping pin with no firmware pull, and a card
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// that samples CS low during that window can latch a confused state the
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// mount ladder then has to rescue. Same discipline as M9Board/the pager.
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pinMode(PIN_SD_CS, OUTPUT);
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digitalWrite(PIN_SD_CS, HIGH);
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// The R8 boot FEM-type line makes the auto-detect visible (the About page
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// reports the board name only) — needed to verify GPIO46 really is the
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// FEM TX-enable on this board rather than a plain LED (see r8 audit).
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Serial.printf("[R8] FEM type=%d (0=GC1109 1=KCT8103L 2=other)\n", (int)loRaFEMControl.getFEMType());
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#endif
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periph_power.begin();
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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)) { // received a LoRa packet (while in deep sleep)
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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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#if defined(HELTEC_LORA_V4_R8)
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// Release the digital-pad holds powerOffCb armed before deep sleep
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// (VEXT / GPS_EN / backlight) — held pads would otherwise block this
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// boot's own rail and backlight drives.
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gpio_deep_sleep_hold_dis();
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gpio_hold_dis((gpio_num_t)PIN_VEXT_EN);
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gpio_hold_dis((gpio_num_t)PIN_GPS_EN);
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gpio_hold_dis((gpio_num_t)PIN_TFT_LEDA_CTL);
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#endif
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}
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}
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void HeltecV4Board::onBeforeTransmit(void) {
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#ifdef P_LORA_TX_LED
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digitalWrite(P_LORA_TX_LED, HIGH); // turn TX LED on
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#endif
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loRaFEMControl.setTxModeEnable();
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}
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void HeltecV4Board::onAfterTransmit(void) {
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#ifdef P_LORA_TX_LED
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digitalWrite(P_LORA_TX_LED, LOW); // turn TX LED off
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#endif
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loRaFEMControl.setRxModeEnable();
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}
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void HeltecV4Board::enterDeepSleep(uint32_t secs, int pin_wake_btn) {
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esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
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// Make sure the DIO1 and NSS GPIOs are hold on required levels during deep sleep
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rtc_gpio_set_direction((gpio_num_t)P_LORA_DIO_1, RTC_GPIO_MODE_INPUT_ONLY);
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rtc_gpio_pulldown_en((gpio_num_t)P_LORA_DIO_1);
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rtc_gpio_hold_en((gpio_num_t)P_LORA_NSS);
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loRaFEMControl.setRxModeEnableWhenMCUSleep();//It also needs to be enabled in receive mode
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if (pin_wake_btn < 0) {
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esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH); // wake up on: recv LoRa packet
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} else {
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esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1) | (1L << pin_wake_btn), ESP_EXT1_WAKEUP_ANY_HIGH); // wake up on: recv LoRa packet OR wake btn
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}
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if (secs > 0) {
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esp_sleep_enable_timer_wakeup(secs * 1000000);
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}
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// Finally set ESP32 into sleep
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esp_deep_sleep_start(); // CPU halts here and never returns!
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}
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void HeltecV4Board::powerOff() {
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enterDeepSleep(0);
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}
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uint16_t HeltecV4Board::getBattMilliVolts() {
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#if defined(HELTEC_LORA_V4_R8)
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// R8: match Meshtastic's heltec_v4_r8 variant — the always-connected
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// high-resistance divider wants LOW attenuation (2.5 dB, full-scale
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// ~1.05 V; the node sits at VBAT/5.07 ≈ 0.65-0.85 V) and a CALIBRATED
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// millivolt read. The generic uncalibrated raw*(3.3/1024) at the default
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// 11 dB under-read this divider by ~5-10%: a full 4.2 V pack displayed
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// ~3.9 V, so the charging-bolt threshold (batteryFullMv()+50) was
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// unreachable by construction and one ADC count quantized to ~16 mV of
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// display (the "frozen at 3839 mV" report).
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static bool s_atten_set = false;
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if (!s_atten_set) { analogSetPinAttenuation(PIN_VBAT_READ, ADC_2_5db); s_atten_set = true; }
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uint32_t mv = 0;
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for (int i = 0; i < 8; i++) mv += analogReadMilliVolts(PIN_VBAT_READ);
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return (uint16_t)((mv / 8) * adc_mult);
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#else
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analogReadResolution(10);
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#if defined(PIN_ADC_CTRL) && PIN_ADC_CTRL >= 0
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digitalWrite(PIN_ADC_CTRL, HIGH); // enable the battery divider
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delay(10);
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#endif
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uint32_t raw = 0;
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for (int i = 0; i < 8; i++) {
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raw += analogRead(PIN_VBAT_READ);
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}
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raw = raw / 8;
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#if defined(PIN_ADC_CTRL) && PIN_ADC_CTRL >= 0
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digitalWrite(PIN_ADC_CTRL, LOW);
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#endif
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return (adc_mult * (3.3 / 1024.0) * raw) * 1000;
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#endif
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}
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const char* HeltecV4Board::getManufacturerName() const {
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#if defined(HELTEC_LORA_V4_R8)
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return "Heltec V4-R8";
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#elif defined(HELTEC_LORA_V4_TFT)
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return loRaFEMControl.getFEMType() == KCT8103L_PA ? "Heltec V4.3 TFT" : "Heltec V4 TFT";
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#else
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return loRaFEMControl.getFEMType() == KCT8103L_PA ? "Heltec V4.3 OLED" : "Heltec V4 OLED";
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#endif
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}
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