- CPU sleep: board.sleep(0) in main loop puts NRF52 into WFE/sd_app_evt_wait
between iterations; wakes on any interrupt (radio, BLE, timer). Largest
power saving of the three changes.
- VBAT_ENABLE gating: voltage divider now powered only during ADC read
(HIGH for 10ms, then LOW). Previously stayed HIGH continuously.
Fixed in both variant.cpp (init) and WioTrackerL1Board::getBattMilliVolts().
- LED off with display: PIN_LED is cleared when auto-off triggers and
restored (handed back to userLedHandler) when display wakes. Avoids
idle LED current draw during screen-off periods.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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
USE_LR1110 was missing from the preprocessor guard in CommonCLI.cpp,
causing both get and set to fail silently on T1000-E:
- get radio.rxgain returned the full radio config string (fell through
to the memcmp("radio", 5) branch)
- set radio.rxgain returned "unknown config" (no branch matched)
Fix: add -D USE_LR1110 to variants/t1000-e/platformio.ini and include
USE_LR1110 in the #if guard on both get and set branches.
CustomLR1110Wrapper already implements setRxBoostedGainMode() and
getRxBoostedGainMode() via the RadioLibWrapper virtual interface,
so no radio-layer changes are required.
Tested on T1000-E: get/set/persist all confirmed working.
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
