tbeam: add LilyGo T-Beam v1.x board support (ESP32 PICO-D4 + SX1276 + AXP192)#32
Draft
seagull9000 wants to merge 3 commits into
Draft
tbeam: add LilyGo T-Beam v1.x board support (ESP32 PICO-D4 + SX1276 + AXP192)#32seagull9000 wants to merge 3 commits into
seagull9000 wants to merge 3 commits into
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New board: LilyGo T-Beam v1.0/v1.1 (ESP32 PICO-D4 + SX1276 + AXP192)
boards/esp32/ttgo_tbeam/board.conf:
- SX127x loramac-node radio backend
- DIO flash mode (PICO-D4 QIO bootloop workaround)
- WiFi OTA opt-out (DRAM limit on classic PICO-D4)
boards/esp32/ttgo_tbeam/board.overlay:
- Replace AXP2101 alias with AXP192 (LDO2→LoRa 3.3V, LDO3→GPS 3.3V)
- LittleFS partition on internal flash
- LED polarity correction (active-low red LED)
- lora-tx-led alias for TX activity flash
adapters/board/ZephyrBoard.cpp:
- Battery voltage via AXP192 I2C registers 0x78/0x79 (12-bit, 1.1 mV/LSB)
- GPIO0 floated at boot to turn off the blue power-indicator LED
CMakeLists.txt:
- Allow board.conf to opt out of auto-WiFi-OTA inclusion
via CONFIG_ZEPHCORE_WIFI_OTA=n for boards with limited DRAM
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
BT blob reserves ~56 KB, leaving 136 KB for data+bss in dram0_0_seg. Reduce MAX_CONTACTS to 32 and MAX_CHANNELS to 8 (saves ~60 KB BSS). Enable &esp32_bt_hci in overlay (disabled by default in SoC DTSI). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
GPIO38 (gpio1 pin 6) is the user-accessible button on T-Beam v1.x. Add gpio-keys + input-longpress + input-multi-tap DT nodes to generate INPUT_KEY_A / INPUT_KEY_ENTER / INPUT_KEY_1 / INPUT_KEY_LEFT events, matching the input chain used by RAK4631/Heltec V4/Pocket builds. Short press wakes the display after auto-off and cycles pages. Long press triggers the page enter action. Two stale blank lines also removed from display.c (no logic change). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Author
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Note: noise floor reading is not supported in current version - requires additional rssi PR. |
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Note
Draft — depends on #31 (fix/sx127x-lbt) being merged first.
The loramac-node backend holds a modem mutex during async RX; without that
fix, lora_config() returns -EBUSY on every TX attempt and all transmissions
are silently dropped.
Board
LilyGo T-Beam v1.0/v1.1 — ESP32 PICO-D4 (4 MB flash), SX1276 LoRa,
AXP192 PMIC, SSD1306 OLED, NEO-6M GPS.
Changes
boards/esp32/ttgo_tbeam/board.conf
boards/esp32/ttgo_tbeam/board.overlay
(LDO2 → LoRa 3.3 V, LDO3 → GPS 3.3 V)
adapters/board/ZephyrBoard.cpp
CMakeLists.txt
CONFIG_ZEPHCORE_WIFI_OTA=n, for boards with limited DRAM
Tested
Built and run on T-Beam v1.1 hardware: