d516cd8a9e
Battery (TechoBoard.h/cpp): Added PIN_VBAT_MEAS_EN (P0.31) — the T-Echo Lite has a gated voltage divider that must be enabled before reading. Also added pinMode(PIN_VBAT_READ, INPUT) before each ADC read to reclaim P0.02 from other peripherals. Pin definitions hardcoded from LilyGo's t_echo_lite_config.h. I2C (variant.h): Corrected SDA/SCL from P0.04/P0.02 to P1.04/P1.02 per LilyGo's IIC_1_SDA/IIC_1_SCL. The old P0.02 mapping conflicted with the battery ADC pin. GPS (variant.h): Corrected all five GPS pin assignments to match LilyGo's config — UART TX/RX, wake, PPS, and power enable were all scrambled. SPI (variant.h): Fixed SPI_INTERFACES_COUNT from _PINNUM(0, 2) to (2). Tested on T-Echo Lite Non-Shell (USB-C, no display). Battery readings match Heltec V4 reference within 10mV.
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
#pragma once
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#include <MeshCore.h>
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#include <Arduino.h>
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#include <helpers/NRF52Board.h>
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// ============================================================
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// T-Echo Lite battery pins — hardcoded from LilyGo t_echo_lite_config.h
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// NOT using any defines from variant.h for battery measurement
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// ============================================================
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#define PIN_VBAT_READ _PINNUM(0, 2) // BATTERY_ADC_DATA
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#define PIN_VBAT_MEAS_EN _PINNUM(0, 31) // BATTERY_MEASUREMENT_CONTROL
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class TechoBoard : public NRF52BoardDCDC {
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public:
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TechoBoard() : NRF52Board("TECHO_OTA") {}
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void begin();
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uint16_t getBattMilliVolts() override;
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const char* getManufacturerName() const override {
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return "LilyGo T-Echo Lite";
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}
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void powerOff() override {
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digitalWrite(PIN_VBAT_MEAS_EN, LOW);
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#ifdef LED_RED
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digitalWrite(LED_RED, LOW);
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#endif
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#ifdef LED_GREEN
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digitalWrite(LED_GREEN, LOW);
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#endif
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#ifdef LED_BLUE
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digitalWrite(LED_BLUE, LOW);
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#endif
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#ifdef DISP_BACKLIGHT
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digitalWrite(DISP_BACKLIGHT, LOW);
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#endif
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#ifdef PIN_PWR_EN
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digitalWrite(PIN_PWR_EN, LOW);
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#endif
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sd_power_system_off();
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}
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}; |