From 1e740d30f2dee428df2438ccd469cca5cc737ee5 Mon Sep 17 00:00:00 2001 From: taco Date: Sun, 10 May 2026 04:58:18 +1000 Subject: [PATCH] initial t-echo card support --- variants/lilygo_techo_card/TechoCardBoard.cpp | 85 +++++++++++ variants/lilygo_techo_card/TechoCardBoard.h | 34 +++++ variants/lilygo_techo_card/platformio.ini | 118 ++++++++++++++ variants/lilygo_techo_card/target.cpp | 54 +++++++ variants/lilygo_techo_card/target.h | 32 ++++ variants/lilygo_techo_card/variant.cpp | 45 ++++++ variants/lilygo_techo_card/variant.h | 144 ++++++++++++++++++ 7 files changed, 512 insertions(+) create mode 100644 variants/lilygo_techo_card/TechoCardBoard.cpp create mode 100644 variants/lilygo_techo_card/TechoCardBoard.h create mode 100644 variants/lilygo_techo_card/platformio.ini create mode 100644 variants/lilygo_techo_card/target.cpp create mode 100644 variants/lilygo_techo_card/target.h create mode 100644 variants/lilygo_techo_card/variant.cpp create mode 100644 variants/lilygo_techo_card/variant.h diff --git a/variants/lilygo_techo_card/TechoCardBoard.cpp b/variants/lilygo_techo_card/TechoCardBoard.cpp new file mode 100644 index 000000000..8d00540e0 --- /dev/null +++ b/variants/lilygo_techo_card/TechoCardBoard.cpp @@ -0,0 +1,85 @@ +#include +#include + + +#include "TechoCardBoard.h" + +#ifdef LILYGO_TECHO_CARD + +Adafruit_NeoPixel Led_A(1, WS2812_DATA_2, NEO_GRB + NEO_KHZ800); +Adafruit_NeoPixel Led_B(1, WS2812_DATA_3, NEO_GRB + NEO_KHZ800); +Adafruit_NeoPixel Led_C(1, WS2812_DATA_1, NEO_GRB + NEO_KHZ800); + +Adafruit_NeoPixel *Led[] = + { + &Led_A, + &Led_B, + &Led_C, +}; + + +void TechoCardBoard::begin() { + NRF52BoardDCDC::begin(); + Wire.begin(); + + for (uint8_t i = 0; i < sizeof(Led) / sizeof(*Led); i++) + { + Led[i]->begin(); + delay(3); // allow the LEDs to initialise, otherwise they can get stuck + Led[i]->setPixelColor(0, Led[i]->Color(0, 0, 0)); + Led[i]->show(); + } + + // put IMU20948 to sleep + // see https://product.tdk.com/system/files/dam/doc/product/sensor/mortion-inertial/imu/data_sheet/ds-000189-icm-20948-v1.5.pdf + Wire.beginTransmission(0x68); + Wire.write(0x06); // PWR_MGMT_1 register + Wire.write(0x40); // set SLEEP bit + Wire.endTransmission(); + +} + +uint16_t TechoCardBoard::getBattMilliVolts() { + int adcvalue = 0; + + analogReference(AR_INTERNAL_3_0); + analogReadResolution(12); + + digitalWrite(PIN_BAT_CTL, HIGH); // enable vbat vdiv + delay(10); + + // ADC range is 0..3000mV and resolution is 12-bit (0..4095) + adcvalue = analogRead(PIN_VBAT_READ); + digitalWrite(PIN_BAT_CTL, LOW); + + // Convert the raw value to compensated mv, taking the resistor- + // divider into account (providing the actual LIPO voltage) + return (uint16_t)((float)adcvalue * REAL_VBAT_MV_PER_LSB); +} + +void TechoCardBoard::onBeforeTransmit() { + Led_A.setPixelColor(0, 20, 20, 20); // turn TX LED on + Led_A.show(); +} + +void TechoCardBoard::onAfterTransmit() { + Led_A.setPixelColor(0, 0, 0, 0); // turn TX LED off + Led_A.show(); +} + +void TechoCardBoard::turnOffLeds() { + for (uint8_t i = 0; i < sizeof(Led) / sizeof(*Led); i++) + { + Led[i]->setPixelColor(0, 0, 0, 0); + Led[i]->show(); + } +} + +void TechoCardBoard::powerOff() { + nrf_gpio_cfg_sense_input(BUTTON_PIN, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);\ + turnOffLeds(); + digitalWrite(PIN_PWR_EN, LOW); + sd_power_system_off(); +} + +#endif diff --git a/variants/lilygo_techo_card/TechoCardBoard.h b/variants/lilygo_techo_card/TechoCardBoard.h new file mode 100644 index 000000000..19bd6d16f --- /dev/null +++ b/variants/lilygo_techo_card/TechoCardBoard.h @@ -0,0 +1,34 @@ +#pragma once + +#include +#include +#include +#include + +// built-ins +#define VBAT_MV_PER_LSB (0.73242188F) // 3.0V ADC range and 12-bit ADC resolution = 3000mV/4096 + +#define VBAT_DIVIDER (0.5F) // Even voltage divider on VBAT +#define VBAT_DIVIDER_COMP (2.0F) // Compensation factor for the VBAT divider + +#define PIN_VBAT_READ (2) +#define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB) + +class TechoCardBoard : public NRF52BoardDCDC { +public: + TechoCardBoard() : NRF52Board("TECHO_OTA") {} + void begin(); + uint16_t getBattMilliVolts() override; + void onBeforeTransmit(void) override; + void onAfterTransmit(void) override; + + + const char* getManufacturerName() const override { + return "LilyGo T-Echo Card"; + } + + void powerOff() override; + + void turnOffLeds(); + +}; diff --git a/variants/lilygo_techo_card/platformio.ini b/variants/lilygo_techo_card/platformio.ini new file mode 100644 index 000000000..2ebb82aa2 --- /dev/null +++ b/variants/lilygo_techo_card/platformio.ini @@ -0,0 +1,118 @@ +[LilyGo_T-Echo_Card] +extends = nrf52_base +board = t-echo +board_build.ldscript = boards/nrf52840_s140_v6.ld +build_flags = ${nrf52_base.build_flags} + -I variants/lilygo_techo_card + -I src/helpers/nrf52 + -I lib/nrf52/s140_nrf52_6.1.1_API/include + -I lib/nrf52/s140_nrf52_6.1.1_API/include/nrf52 + -D LILYGO_TECHO_CARD + -D RADIO_CLASS=CustomSX1262 + -D WRAPPER_CLASS=CustomSX1262Wrapper + -D LORA_TX_POWER=22 + -D SX126X_CURRENT_LIMIT=140 + -D SX126X_RX_BOOSTED_GAIN=1 + -D HAS_NEOPIXEL=1 + ; -D DISABLE_DIAGNOSTIC_OUTPUT + -D ENV_INCLUDE_GPS=1 + -D DISPLAY_CLASS=SSD1306Display + -D PIN_OLED_RESET=-1 +build_src_filter = ${nrf52_base.build_src_filter} + + + + + + + + + + + +<../variants/lilygo_techo_card> +lib_deps = + ${nrf52_base.lib_deps} + stevemarple/MicroNMEA @ ^2.0.6 + adafruit/Adafruit SSD1306 @ ^2.5.13 + adafruit/Adafruit NeoPixel@^1.10.0 + bakercp/CRC32 @ ^2.0.0 +debug_tool = jlink +upload_protocol = nrfutil + +[env:LilyGo_T-Echo_Card_repeater] +extends = LilyGo_T-Echo_Card +build_src_filter = ${LilyGo_T-Echo_Card.build_src_filter} + +<../examples/simple_repeater> +build_flags = + ${LilyGo_T-Echo_Card.build_flags} + -D ADVERT_NAME='"T-Echo Card Repeater"' + -D ADVERT_LAT=0.0 + -D ADVERT_LON=0.0 + -D ADMIN_PASSWORD='"password"' + -D MAX_NEIGHBOURS=50 + ; -D MESH_PACKET_LOGGING=1 + ; -D MESH_DEBUG=1 + +[env:LilyGo_T-Echo_Card_room_server] +extends = LilyGo_T-Echo_Card +build_src_filter = ${LilyGo_T-Echo_Card.build_src_filter} + +<../examples/simple_room_server> +build_flags = + ${LilyGo_T-Echo_Card.build_flags} + -D ADVERT_NAME='"T-Echo Card Room"' + -D ADVERT_LAT=0.0 + -D ADVERT_LON=0.0 + -D ADMIN_PASSWORD='"password"' + ; -D MESH_PACKET_LOGGING=1 + ; -D MESH_DEBUG=1 + +[env:LilyGo_T-Echo_Card_companion_radio_ble] +extends = LilyGo_T-Echo_Card +board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld +board_upload.maximum_size = 712704 +build_flags = + ${LilyGo_T-Echo_Card.build_flags} + -I src/helpers/ui + -I examples/companion_radio/ui-new + -D PIN_BUZZER=38 + -D QSPIFLASH=1 + -D MAX_CONTACTS=350 + -D MAX_GROUP_CHANNELS=40 + -D BLE_PIN_CODE=123456 + ; -D BLE_DEBUG_LOGGING=1 + -D OFFLINE_QUEUE_SIZE=256 + -D UI_RECENT_LIST_SIZE=3 + -D UI_GPS_PAGE=1 + ; -D MESH_PACKET_LOGGING=1 + ; -D MESH_DEBUG=1 + -D AUTO_SHUTDOWN_MILLIVOLTS=3300 +build_src_filter = ${LilyGo_T-Echo_Card.build_src_filter} + + + +<../examples/companion_radio/*.cpp> + +<../examples/companion_radio/ui-new/*.cpp> + + +lib_deps = + ${LilyGo_T-Echo_Card.lib_deps} + end2endzone/NonBlockingRTTTL@^1.3.0 + densaugeo/base64 @ ~1.4.0 + +[env:LilyGo_T-Echo_Card_companion_radio_usb] +extends = LilyGo_T-Echo_Card +board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld +board_upload.maximum_size = 712704 +build_flags = + ${LilyGo_T-Echo_Card.build_flags} + -I src/helpers/ui + -I examples/companion_radio/ui-new + -D PIN_BUZZER=38 + -D QSPIFLASH=1 + -D MAX_CONTACTS=350 + -D MAX_GROUP_CHANNELS=40 + -D OFFLINE_QUEUE_SIZE=256 + -D UI_RECENT_LIST_SIZE=3 + -D UI_GPS_PAGE=1 + ; -D MESH_PACKET_LOGGING=1 + ; -D MESH_DEBUG=1 + -D AUTO_SHUTDOWN_MILLIVOLTS=3300 +build_src_filter = ${LilyGo_T-Echo_Card.build_src_filter} + +<../examples/companion_radio/*.cpp> + +<../examples/companion_radio/ui-new/*.cpp> +lib_deps = + ${LilyGo_T-Echo_Card.lib_deps} + end2endzone/NonBlockingRTTTL@^1.3.0 + densaugeo/base64 @ ~1.4.0 diff --git a/variants/lilygo_techo_card/target.cpp b/variants/lilygo_techo_card/target.cpp new file mode 100644 index 000000000..63686b76f --- /dev/null +++ b/variants/lilygo_techo_card/target.cpp @@ -0,0 +1,54 @@ +#include +#include "target.h" +#include +#include + +TechoCardBoard board; + +RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, SPI); + +WRAPPER_CLASS radio_driver(radio, board); + +VolatileRTCClock fallback_clock; +AutoDiscoverRTCClock rtc_clock(fallback_clock); + +#ifdef ENV_INCLUDE_GPS +MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1, &rtc_clock); +EnvironmentSensorManager sensors = EnvironmentSensorManager(nmea); +#else +EnvironmentSensorManager sensors = EnvironmentSensorManager(); +#endif + + +#ifdef DISPLAY_CLASS + DISPLAY_CLASS display; + MomentaryButton user_btn(PIN_USER_BTN, 1000, true); +#endif + +bool radio_init() { + rtc_clock.begin(Wire); + + return radio.std_init(&SPI); +} + +uint32_t radio_get_rng_seed() { + return radio.random(0x7FFFFFFF); +} + +void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) { + radio.setFrequency(freq); + radio.setSpreadingFactor(sf); + radio.setBandwidth(bw); + radio.setCodingRate(cr); +} + +void radio_set_tx_power(int8_t dbm) { + radio.setOutputPower(dbm); +} + +mesh::LocalIdentity radio_new_identity() { + RadioNoiseListener rng(radio); + return mesh::LocalIdentity(&rng); // create new random identity +} + + diff --git a/variants/lilygo_techo_card/target.h b/variants/lilygo_techo_card/target.h new file mode 100644 index 000000000..0b778cb8a --- /dev/null +++ b/variants/lilygo_techo_card/target.h @@ -0,0 +1,32 @@ +#pragma once + +#define RADIOLIB_STATIC_ONLY 1 +#include +#include +#include +#include +#include +#include +#include +#include +#ifdef DISPLAY_CLASS + #include + #include +#endif + +extern TechoCardBoard board; +extern WRAPPER_CLASS radio_driver; +extern AutoDiscoverRTCClock rtc_clock; +extern EnvironmentSensorManager sensors; + +#ifdef DISPLAY_CLASS + extern DISPLAY_CLASS display; + extern MomentaryButton user_btn; +#endif + +bool radio_init(); +uint32_t radio_get_rng_seed(); +void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr); +void radio_set_tx_power(int8_t dbm); +mesh::LocalIdentity radio_new_identity(); + diff --git a/variants/lilygo_techo_card/variant.cpp b/variants/lilygo_techo_card/variant.cpp new file mode 100644 index 000000000..0b00791a1 --- /dev/null +++ b/variants/lilygo_techo_card/variant.cpp @@ -0,0 +1,45 @@ +#include "variant.h" +#include "wiring_constants.h" +#include "wiring_digital.h" +#include "Adafruit_NeoPixel.h" + +const int MISO = PIN_SPI_MISO; +const int MOSI = PIN_SPI_MOSI; +const int SCK = PIN_SPI_SCK; + + + +const uint32_t g_ADigitalPinMap[] = { + 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, 32, 33, 34, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47 +}; + +void initVariant() { + // turn on 3v3 rail + pinMode(PIN_PWR_EN, OUTPUT); + digitalWrite(PIN_PWR_EN, HIGH); + + // VDIV enable + pinMode(PIN_BAT_CTL, OUTPUT); + + // buttons + pinMode(PIN_BUTTON1, INPUT_PULLUP); + pinMode(PIN_BUTTON2, INPUT_PULLUP); + + // speaker + pinMode(SPEAKER_EN, OUTPUT); + digitalWrite(SPEAKER_EN, LOW); + pinMode(SPEAKER_EN_2, OUTPUT); + digitalWrite(SPEAKER_EN_2, LOW); + + // gps + pinMode(PIN_GPS_STANDBY, OUTPUT); + digitalWrite(PIN_GPS_STANDBY, HIGH); + pinMode(PIN_GPS_EN, OUTPUT); + digitalWrite(PIN_GPS_EN, HIGH); + pinMode(PIN_GPS_RESET, OUTPUT); + digitalWrite(PIN_GPS_RESET, HIGH); + +} diff --git a/variants/lilygo_techo_card/variant.h b/variants/lilygo_techo_card/variant.h new file mode 100644 index 000000000..28c5f550c --- /dev/null +++ b/variants/lilygo_techo_card/variant.h @@ -0,0 +1,144 @@ +/* + * variant.h + * + * MIT License + */ + +#pragma once + +#include "WVariant.h" + +//////////////////////////////////////////////////////////////////////////////// +// Low frequency clock source + +#define USE_LFXO // 32.768 kHz crystal oscillator +#define VARIANT_MCK (64000000ul) + +#define WIRE_INTERFACES_COUNT (1) +//////////////////////////////////////////////////////////////////////////////// +// Power + +#define PIN_PWR_EN (30) // RT9080 LDO enable pin for 3v3 rail + +#define PIN_BAT_CTL (31) // vdiv enable +#define PIN_VBAT_READ (2) +#define ADC_MULTIPLIER (4.90F) + +#define ADC_RESOLUTION (14) +#define BATTERY_SENSE_RES (12) +#define AREF_VOLTAGE (3.0) + +//////////////////////////////////////////////////////////////////////////////// +// Number of pins + +#define PINS_COUNT (48) +#define NUM_DIGITAL_PINS (48) +#define NUM_ANALOG_INPUTS (1) +#define NUM_ANALOG_OUTPUTS (0) + +//////////////////////////////////////////////////////////////////////////////// +// UART pin definition + +#define PIN_SERIAL1_RX PIN_GPS_TX +#define PIN_SERIAL1_TX PIN_GPS_RX +//////////////////////////////////////////////////////////////////////////////// +// I2C pin definition + +#define PIN_WIRE_SDA (36) // P1.04 +#define PIN_WIRE_SCL (34) // P1.02 +#define I2C_NO_RESCAN +#define DISABLE_DS3231_PROBE // DS3231 lives at 0x68 but this board has ICM20948 at that address, causing broken clock. + +//////////////////////////////////////////////////////////////////////////////// +// SPI pin definition + +#define SPI_INTERFACES_COUNT (1) + +#define PIN_SPI_MISO (17) +#define PIN_SPI_MOSI (15) +#define PIN_SPI_SCK (13) + +//////////////////////////////////////////////////////////////////////////////// +// QSPI FLASH + +#define PIN_QSPI_SCK (4) +#define PIN_QSPI_CS (12) +#define PIN_QSPI_IO0 (6) +#define PIN_QSPI_IO1 (8) +#define PIN_QSPI_IO2 (41) // P1.09 +#define PIN_QSPI_IO3 (26) + +#define EXTERNAL_FLASH_DEVICES ZD25WQ32CEIGR +#define EXTERNAL_FLASH_USE_QSPI + +//////////////////////////////////////////////////////////////////////////////// +// Builtin LEDs (only WS2812, no traditional LEDs available) + +// WS1812 data lines +#define WS2812_DATA_1 (39) // P1.07 +#define WS2812_DATA_2 (44) // P1.12 +#define WS2812_DATA_3 (28) // P0.28 + +#define LED_BLUE (-1) +#define LED_BUILTIN (-1) +#define LED_PIN LED_BUILTIN +#define LED_STATE_ON LOW + +//////////////////////////////////////////////////////////////////////////////// +// Builtin buttons + +#define PIN_BUTTON1 (42) // P1.10 +#define BUTTON_PIN PIN_BUTTON1 // BUTTON A +#define PIN_USER_BTN BUTTON_PIN + +#define PIN_BUTTON2 (24) +#define BUTTON_PIN2 PIN_BUTTON2 // BUTTON C + +//////////////////////////////////////////////////////////////////////////////// +// Lora (Acsip S62F) + +#define USE_SX1262 +#define P_LORA_SCLK PIN_SPI_SCK +#define P_LORA_MISO PIN_SPI_MISO +#define P_LORA_MOSI PIN_SPI_MOSI +#define P_LORA_DIO_1 (40) // P1.08 +#define P_LORA_RESET (7) // P0.07 +#define P_LORA_BUSY (14) // P0.14 +#define P_LORA_NSS (11) // P0.11 +#define SX126X_RXEN (33) // P1.01 +#define SX126X_TXEN (27) // P0.27 +#define SX126X_DIO3_TCXO_VOLTAGE (1.8f) + + +//////////////////////////////////////////////////////////////////////////////// +// GPS + +// NOTE: these pins are defined differently to how lilygo does them but they +// seem to work properly for how EnvironmentSensorManager operates. +// TODO: MAYBE? migrate to board based sensor manager / add GPS_WAKE_UP to ESM + +#define PIN_GPS_RX (21) // GPS_UART_RX in lilygo pin defs +#define PIN_GPS_TX (19) // GPS_UART_TX in lilygo pin defs +#define PIN_GPS_EN (25) // GPS_WAKE_UP in lilygo pin defs +#define PIN_GPS_RESET (47) // GPS_EN in lilygo pin defs +#define PIN_GPS_STANDBY (29) // GPS_RF_EN in lilygo pin defs +#define PIN_GPS_PPS (23) // GPS_1PPS in lilygo pin defs + +// buzzer - enabled in platformio.ini so it can be easily turned off if not wanted. +// #define PIN_BUZZER (38) // P1.06 + +// microphone +#define MICROPHONE_SCLK (35) // P1.03 +#define MICROPHONE_DATA (37) // P1.05 + +// speaker +#define SPEAKER_EN (43) // P1.11 +#define SPEAKER_EN_2 (3) // P0.03 +#define SPEAKER_BCLK (16) // P0.16 +#define SPEAKER_DATA (20) // P0.20 +#define SPEAKER_WS_LRCK (22) // P0.22 + +// ICM20948 9dof motion sensor (accelerometer and magnetometer) +#define ICM20948_SDA PIN_WIRE_SDA // P1.4 +#define ICM20948_SCL PIN_WIRE_SCL // P1.2 +#define ICM20948_ADDRESS 0x68