Remove the hardcoded BLE_PIN_CODE build flag from the Heltec_E290_companion_ble
environment. The presence of BLE_PIN_CODE prevents the unit from operating as a
USB companion. Commenting it out allows dynamic PIN generation and enables USB
companion functionality.
some older ESP32 boards were pushing the limits of the dram segment causing the linker to fail, especially for ble and wifi firmwares.
lowering OFFLINE_QUEUE_SIZE reduces dram usage
- Remove extra blank line in companion_radio main.cpp before NRF52/STM32 block
- Revert unintended STM32_PLATFORM ETHERNET_ENABLED branch (no STM32 ethernet target exists, and it incorrectly included nrf52 headers)
- Drop renovate annotations from rak4631 platformio.ini (no renovate config in this repo)
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.
T-Echo Lite Non-Shell has no ePaper display, but the existing
companion BLE env inherits DISPLAY_CLASS=GxEPDDisplay from the base
env. This causes display.begin() to run on non-existent hardware,
corrupting BLE initialization and generating a random PIN that
cannot be displayed, making BLE connection impossible.
Add LilyGo_T-Echo-Lite_non_shell_companion_radio_ble env that:
- excludes DISPLAY_CLASS and ePaper-related build flags
- removes GxEPDDisplay.cpp and ui-new from build sources
- uses static BLE_PIN_CODE=123456 (avoids random PIN generation)
Also fix boards/t-echo.json:
- add nrfutil to upload protocols list
- add use_1200bps_touch=true and wait_for_upload_port=true
to enable reliable flashing via PlatformIO upload button
Ryan Gregg
Willem Oldemans
ripplebiz
Rastislav Vysoky
liamcottle
Quency-D
Huw Duddy
Chris
entr0p1
jirogit
taco
chrisdavis2110
Confi
zevaryx
Kevin Le
Wessel Nieboer
pelgraine
Wessel Nieboer
Marco