Support for T-Echo Lite, credits to @Szetya for doing all the heavy lifting! (#7636)

* Support for T-Echo Lite, credts to @Szetya for doing all the heavy lifting!
* move define to ini file

src/BluetoothStatus.h

@@ -89,14 +89,22 @@ class BluetoothStatus : public Status
             case ConnectionState::CONNECTED:
                 LOG_DEBUG("BluetoothStatus CONNECTED");
 #ifdef BLE_LED
+#ifdef BLE_LED_INVERTED
+                digitalWrite(BLE_LED, LOW);
+#else
                 digitalWrite(BLE_LED, HIGH);
+#endif
 #endif
                 break;
 
             case ConnectionState::DISCONNECTED:
                 LOG_DEBUG("BluetoothStatus DISCONNECTED");
 #ifdef BLE_LED
+#ifdef BLE_LED_INVERTED
+                digitalWrite(BLE_LED, HIGH);
+#else
                 digitalWrite(BLE_LED, LOW);
+#endif
 #endif
                 break;
             }

src/graphics/EInkDisplay2.cpp

@@ -140,13 +140,13 @@ bool EInkDisplay::connect()
 #endif
 #endif
 
-#if defined(TTGO_T_ECHO) || defined(ELECROW_ThinkNode_M1)
+#if defined(TTGO_T_ECHO) || defined(ELECROW_ThinkNode_M1) || defined(T_ECHO_LITE)
     {
         auto lowLevel = new EINK_DISPLAY_MODEL(PIN_EINK_CS, PIN_EINK_DC, PIN_EINK_RES, PIN_EINK_BUSY, SPI1);
 
         adafruitDisplay = new GxEPD2_BW<EINK_DISPLAY_MODEL, EINK_DISPLAY_MODEL::HEIGHT>(*lowLevel);
         adafruitDisplay->init();
-#ifdef ELECROW_ThinkNode_M1
+#if defined(ELECROW_ThinkNode_M1) || defined(T_ECHO_LITE)
         adafruitDisplay->setRotation(4);
 #else
         adafruitDisplay->setRotation(3);

src/main.cpp

@@ -325,8 +325,12 @@ void setup()
 
 #ifdef BLE_LED
     pinMode(BLE_LED, OUTPUT);
+#ifdef BLE_LED_INVERTED
+    digitalWrite(BLE_LED, HIGH);
+#else
     digitalWrite(BLE_LED, LOW);
 #endif
+#endif
 
 #if defined(T_DECK)
     // GPIO10 manages all peripheral power supplies

src/modules/SerialModule.cpp

@@ -60,7 +60,7 @@
 SerialModule *serialModule;
 SerialModuleRadio *serialModuleRadio;
 
-#if defined(TTGO_T_ECHO) || defined(CANARYONE) || defined(MESHLINK) || defined(ELECROW_ThinkNode_M1) ||                          \
+#if defined(TTGO_T_ECHO) || defined(T_ECHO_LITE) || defined(CANARYONE) || defined(MESHLINK) || defined(ELECROW_ThinkNode_M1) ||  \
     defined(ELECROW_ThinkNode_M5)
 SerialModule::SerialModule() : StreamAPI(&Serial), concurrency::OSThread("Serial") {}
 static Print *serialPrint = &Serial;
@@ -179,8 +179,8 @@ int32_t SerialModule::runOnce()
                 Serial.begin(baud);
                 Serial.setTimeout(moduleConfig.serial.timeout > 0 ? moduleConfig.serial.timeout : TIMEOUT);
             }
-#elif !defined(TTGO_T_ECHO) && !defined(CANARYONE) && !defined(MESHLINK) && !defined(ELECROW_ThinkNode_M1) &&                    \
+#elif !defined(TTGO_T_ECHO) && !defined(T_ECHO_LITE) && !defined(CANARYONE) && !defined(MESHLINK) &&                             \
-    !defined(ELECROW_ThinkNode_M5)
+    !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M5)
             if (moduleConfig.serial.rxd && moduleConfig.serial.txd) {
 #ifdef ARCH_RP2040
                 Serial2.setFIFOSize(RX_BUFFER);
@@ -236,8 +236,8 @@ int32_t SerialModule::runOnce()
                 }
             }
 
-#if !defined(TTGO_T_ECHO) && !defined(CANARYONE) && !defined(MESHLINK) && !defined(ELECROW_ThinkNode_M1) &&                      \
+#if !defined(TTGO_T_ECHO) && !defined(T_ECHO_LITE) && !defined(CANARYONE) && !defined(MESHLINK) &&                               \
-    !defined(ELECROW_ThinkNode_M5)
+    !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M5)
             else if ((moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_WS85)) {
                 processWXSerial();
 
@@ -496,8 +496,8 @@ ParsedLine parseLine(const char *line)
  */
 void SerialModule::processWXSerial()
 {
-#if !defined(TTGO_T_ECHO) && !defined(CANARYONE) && !defined(CONFIG_IDF_TARGET_ESP32C6) && !defined(MESHLINK) &&                 \
+#if !defined(TTGO_T_ECHO) && !defined(T_ECHO_LITE) && !defined(CANARYONE) && !defined(CONFIG_IDF_TARGET_ESP32C6) &&              \
-    !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M5)
+    !defined(MESHLINK) && !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M5)
     static unsigned int lastAveraged = 0;
     static unsigned int averageIntervalMillis = 300000; // 5 minutes hard coded.
     static double dir_sum_sin = 0;

src/nimble/NimbleBluetooth.cpp

@@ -223,9 +223,12 @@ void NimbleBluetooth::deinit()
     LOG_INFO("Disable bluetooth until reboot");
 
 #ifdef BLE_LED
+#ifdef BLE_LED_INVERTED
+    digitalWrite(BLE_LED, HIGH);
+#else
     digitalWrite(BLE_LED, LOW);
 #endif
-
+#endif
     NimBLEDevice::deinit();
 #endif
 }

src/platform/nrf52/architecture.h

@@ -60,6 +60,8 @@
 #define HW_VENDOR meshtastic_HardwareModel_RAK4631
 #elif defined(TTGO_T_ECHO)
 #define HW_VENDOR meshtastic_HardwareModel_T_ECHO
+#elif defined(T_ECHO_LITE)
+#define HW_VENDOR meshtastic_HardwareModel_T_ECHO_LITE
 #elif defined(ELECROW_ThinkNode_M1)
 #define HW_VENDOR meshtastic_HardwareModel_THINKNODE_M1
 #elif defined(NANO_G2_ULTRA)

variants/nrf52840/t-echo-lite/platformio.ini

@@ -0,0 +1,25 @@
+; Using original screen class
+[env:t-echo-lite]
+extends = nrf52840_base
+board = t-echo
+board_check = true
+debug_tool = jlink
+
+# add -DCFG_SYSVIEW if you want to use the Segger systemview tool for OS profiling.
+build_flags = ${nrf52840_base.build_flags}
+  -Ivariants/nrf52840/t-echo-lite
+  -D T_ECHO_LITE
+  -D GPS_POWER_TOGGLE
+  -D EINK_DISPLAY_MODEL=GxEPD2_122_T61
+  -D EINK_WIDTH=192
+  -D EINK_HEIGHT=176
+  -D USE_EINK
+  -D USE_EINK_DYNAMICDISPLAY            ; Enable Dynamic EInk
+  -D EINK_LIMIT_FASTREFRESH=20          ; How many consecutive fast-refreshes are permitted
+  -D EINK_BACKGROUND_USES_FAST          ; (Optional) Use FAST refresh for both BACKGROUND and RESPONSIVE, until a limit is reached.
+
+build_src_filter = ${nrf52_base.build_src_filter} +<../variants/nrf52840/t-echo-lite>
+lib_deps = 
+  ${nrf52840_base.lib_deps}
+  https://github.com/meshtastic/GxEPD2/archive/a05c11c02862624266b61599b0d6ba93e33c6f24.zip
+;upload_protocol = fs

variants/nrf52840/t-echo-lite/variant.cpp

@@ -0,0 +1,44 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+  Copyright (c) 2016 Sandeep Mistry All right reserved.
+  Copyright (c) 2018, Adafruit Industries (adafruit.com)
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "nrf.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+
+const uint32_t g_ADigitalPinMap[] = {
+    // P0 - pins 0 and 1 are hardwired for xtal and should never be enabled
+    0xff, 0xff, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+
+    // P1
+    32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47};
+
+void initVariant()
+{
+    // LED1 & LED2
+    pinMode(PIN_LED1, OUTPUT);
+    ledOff(PIN_LED1);
+
+    pinMode(PIN_LED2, OUTPUT);
+    ledOff(PIN_LED2);
+
+    pinMode(PIN_LED3, OUTPUT);
+    ledOff(PIN_LED3);
+}

variants/nrf52840/t-echo-lite/variant.h

@@ -0,0 +1,207 @@
+/*
+ Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+ Copyright (c) 2016 Sandeep Mistry All right reserved.
+ Copyright (c) 2018, Adafruit Industries (adafruit.com)
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU Lesser General Public License for more details.
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef _VARIANT_TTGO_EINK_V1_0_
+#define _VARIANT_TTGO_EINK_V1_0_
+
+/** Master clock frequency */
+#define VARIANT_MCK (64000000ul)
+
+#define USE_LFXO // Board uses 32khz crystal for LF
+
+/*----------------------------------------------------------------------------
+ *        Headers
+ *----------------------------------------------------------------------------*/
+
+#include "WVariant.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+// Number of pins defined in PinDescription array
+#define PINS_COUNT (48)
+#define NUM_DIGITAL_PINS (48)
+#define NUM_ANALOG_INPUTS (1)
+#define NUM_ANALOG_OUTPUTS (0)
+
+// LEDs
+#define PIN_LED1 (32 + 7) // Green LED
+#define PIN_LED2 (32 + 5) // Blue LED
+// Unused(by firmware) LEDs:
+#define PIN_LED3 (32 + 14) // Red LED inside, under the display.
+
+#define LED_RED PIN_LED3
+#define LED_BLUE PIN_LED2
+#define LED_GREEN PIN_LED1
+
+#define BLE_LED LED_BLUE
+#define BLE_LED_INVERTED 1
+#define LED_BUILTIN LED_GREEN
+#define LED_CONN LED_GREEN
+#define LED_STATE_ON 0 // State when LED is lit
+
+// Buttons
+#define PIN_BUTTON1 (0 + 24)
+#define PIN_BUTTON2 (0 + 18) // 0.18 is labeled on the board as RESET but we configure it in the bootloader as a regular GPIO
+
+#define BUTTON_CLICK_MS 400
+
+// Analog pins
+#define PIN_A0 (0 + 2) // Battery ADC
+
+#define BATTERY_PIN PIN_A0
+
+static const uint8_t A0 = PIN_A0;
+
+#define ADC_RESOLUTION 14
+
+#define ADC_CTRL (0 + 31)
+#define ADC_CTRL_ENABLED HIGH
+
+// NFC
+#define PIN_NFC1 (9)
+#define PIN_NFC2 (10)
+
+// Wire Interfaces
+#define WIRE_INTERFACES_COUNT 1
+
+#define PIN_WIRE_SDA (32 + 4)
+#define PIN_WIRE_SCL (32 + 2)
+
+/*
+ Internal, PCB PAD interrupt PIN. Currently not used. (Not built in my device)
+*/
+// #define PIN_IMU_INT (0 + 16) // Interrupt from the IMU, macro name correct?!
+
+// External serial flash ZD25WQ32CEIGR
+// QSPI Pins
+#define PIN_QSPI_SCK (0 + 4)
+#define PIN_QSPI_CS (0 + 12)
+#define PIN_QSPI_IO0 (0 + 6)  // MOSI if using two bit interface
+#define PIN_QSPI_IO1 (0 + 8)  // MISO if using two bit interface
+#define PIN_QSPI_IO2 (32 + 9) // WP if using two bit interface (i.e. not used)
+#define PIN_QSPI_IO3 (0 + 26) // HOLD if using two bit interface (i.e. not used)
+
+// On-board QSPI Flash
+#define EXTERNAL_FLASH_DEVICES ZD25WQ32CEIGR
+#define EXTERNAL_FLASH_USE_QSPI
+
+// Lora radio
+
+#define USE_SX1262
+// #define USE_SX1268 // currently only available with XS1262.
+#define SX126X_CS (0 + 11)
+#define SX126X_DIO1 (32 + 8)
+#define SX126X_DIO2 (0 + 5)
+#define SX126X_BUSY (0 + 14)
+#define SX126X_RESET (0 + 7)
+#define SX126X_RXEN (32 + 1)
+#define SX126X_TXEN (0 + 27)
+// #define TCXO_OPTIONAL
+#define SX126X_DIO3_TCXO_VOLTAGE 1.8
+
+// eink display pins
+#define VEXT_ENABLE (32 + 12)
+#define VEXT_ON_VALUE LOW
+#define PIN_EINK_CS (0 + 22)
+#define PIN_EINK_BUSY (0 + 3)
+#define PIN_EINK_DC (0 + 21)
+#define PIN_EINK_RES (0 + 28)
+#define PIN_EINK_SCLK (0 + 19)
+#define PIN_EINK_MOSI (0 + 20)
+
+// Controls power 3V3 for all peripherals (eink + GPS + LoRa + Sensor)
+#define PIN_POWER_EN (0 + 30) // 3V3 POWER Enable
+
+#define PIN_SPI1_MISO (-1) // The display does not use MISO.
+#define PIN_SPI1_MOSI PIN_EINK_MOSI
+#define PIN_SPI1_SCK PIN_EINK_SCLK
+
+// GPS pins
+// #define GPS_DEBUG
+#define GPS_L76K
+#define GPS_BAUDRATE 9600
+#define HAS_GPS 1
+// #define PIN_GPS_REINIT (32 + 5) // An output to reset L76K GPS. As per datasheet, low for > 100ms will reset the L76K
+
+#define PIN_GPS_STANDBY (32 + 10) // An output to wake GPS, low means allow sleep, high means force wake
+// Seems to be missing on this new board
+#define PIN_GPS_PPS (0 + 29) // Pulse per second input from the GPS
+#define GPS_TX_PIN (32 + 15) // This is for bits going TOWARDS the CPU
+#define GPS_RX_PIN (32 + 13) // This is for bits going TOWARDS the GPS
+
+#define GPS_THREAD_INTERVAL 50
+
+#define PIN_SERIAL1_RX GPS_TX_PIN
+#define PIN_SERIAL1_TX GPS_RX_PIN
+
+// SPI Interfaces
+#define SPI_INTERFACES_COUNT 2
+
+// For LORA, SPI 0
+#define PIN_SPI_MISO (0 + 17)
+#define PIN_SPI_MOSI (0 + 15)
+#define PIN_SPI_SCK (0 + 13)
+
+// Battery
+// The battery sense is hooked to pin A0 (2)
+// it is defined in the analogue pin section of this file
+// and has 12 bit resolution
+#define BATTERY_SENSE_RESOLUTION_BITS 12
+#define BATTERY_SENSE_RESOLUTION 4096.0
+#undef AREF_VOLTAGE
+#define AREF_VOLTAGE 3.0
+#define VBAT_AR_INTERNAL AR_INTERNAL_3_0
+#define ADC_MULTIPLIER (2.0F)
+
+// #define NO_EXT_GPIO 1
+// PINs back side
+// Batt & solar connector left up corner
+/*
+-------------------------------
+| VDDH, VBAT, 0.23, SCL , 1.06 |
+| GND , SDA , 0.09, 0.10, 0.25 |
+-------------------------------
+                        --------
+                        | VDDH |
+                        | GND  |
+                        | 1.13 | - Wake Up/standby
+                        | 1.15 | - PPS
+                        | 0.29 | - TX
+                        | 1.10 | - RX
+                        | 1.11 | - EN
+                        --------
+-------------------------------
+| 3V3 , GND , 0.16, 1.03, G_WU |  0.16 internal solder pad interrupt PIN,
+| G_EN, G_RX, G_TX, GND , PPS  |
+-------------------------------
+*/
+
+// To debug via the segger JLINK console rather than the CDC-ACM serial device
+// #define USE_SEGGER
+
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+ *        Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#endif