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Add support for LilyGo T-Echo Plus (#9149)

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* Add t-echo plus support

* T-Echo plus hw model

* Cruft

* Fix

* Added InkHUD style touch backlight control
This commit is contained in:
Ben Meadors
2026-01-02 20:14:09 -06:00
committed by GitHub
parent 1e914140ca
commit 3a90781e1b
14 changed files with 330 additions and 19 deletions
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34
src/main.cpp
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@@ -107,6 +107,10 @@ NRF52Bluetooth *nrf52Bluetooth = nullptr;
#if defined(BUTTON_PIN_TOUCH)
ButtonThread *TouchButtonThread = nullptr;
#if defined(TTGO_T_ECHO_PLUS) && defined(PIN_EINK_EN)
static bool touchBacklightWasOn = false;
static bool touchBacklightActive = false;
#endif
#endif
#if defined(BUTTON_PIN) || defined(ARCH_PORTDUINO)
@@ -205,7 +209,7 @@ ScanI2C::FoundDevice rgb_found = ScanI2C::FoundDevice(ScanI2C::DeviceType::NONE,
/// The I2C address of our Air Quality Indicator (if found)
ScanI2C::DeviceAddress aqi_found = ScanI2C::ADDRESS_NONE;
#if defined(T_WATCH_S3) || defined(T_LORA_PAGER)
#ifdef HAS_DRV2605
Adafruit_DRV2605 drv;
#endif
@@ -788,7 +792,6 @@ void setup()
// We do this as early as possible because this loads preferences from flash
// but we need to do this after main cpu init (esp32setup), because we need the random seed set
nodeDB = new NodeDB;
#if HAS_TFT
if (config.display.displaymode == meshtastic_Config_DisplayConfig_DisplayMode_COLOR) {
tftSetup();
@@ -834,7 +837,12 @@ void setup()
#endif
#endif
#if defined(T_WATCH_S3) || defined(T_LORA_PAGER)
#ifdef HAS_DRV2605
#if defined(PIN_DRV_EN)
pinMode(PIN_DRV_EN, OUTPUT);
digitalWrite(PIN_DRV_EN, HIGH);
delay(10);
#endif
drv.begin();
drv.selectLibrary(1);
// I2C trigger by sending 'go' command
@@ -870,7 +878,7 @@ void setup()
SPI.begin();
#endif
#else
// ESP32
// ESP32
#if defined(HW_SPI1_DEVICE)
SPI1.begin(LORA_SCK, LORA_MISO, LORA_MOSI, LORA_CS);
LOG_DEBUG("SPI1.begin(SCK=%d, MISO=%d, MOSI=%d, NSS=%d)", LORA_SCK, LORA_MISO, LORA_MOSI, LORA_CS);
@@ -1039,6 +1047,24 @@ void setup()
};
touchConfig.singlePress = INPUT_BROKER_NONE;
touchConfig.longPress = INPUT_BROKER_BACK;
#if defined(TTGO_T_ECHO_PLUS) && defined(PIN_EINK_EN)
// On T-Echo Plus the touch pad should only drive the backlight, not UI navigation/sounds
touchConfig.longPress = INPUT_BROKER_NONE;
touchConfig.suppressLeadUpSound = true;
touchConfig.onPress = []() {
touchBacklightWasOn = uiconfig.screen_brightness == 1;
if (!touchBacklightWasOn) {
digitalWrite(PIN_EINK_EN, HIGH);
}
touchBacklightActive = true;
};
touchConfig.onRelease = []() {
if (touchBacklightActive && !touchBacklightWasOn) {
digitalWrite(PIN_EINK_EN, LOW);
}
touchBacklightActive = false;
};
#endif
TouchButtonThread->initButton(touchConfig);
#endif