feat: add M5Stack Unit C6L variant support#2632
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Add variant configuration for M5Stack Unit C6L (ESP32-C6, SX1262 LoRa, SSD1306 64x48 SPI display). Includes: - Board class with PI4IO I/O expander for LoRa RF control - DIO flash mode fix for ESP32-C6 bootloader compatibility - SSD1306 SPI display with custom minimal UITask for 64x48 - CustomSerialBLEInterface fix for correct BLE Connected status - All 4 firmware environments: companion (USB/BLE), repeater, room server
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Summary
Adds full support for the M5Stack Unit C6L (ESP32-C6 + SX1262 LoRa), including PI4IO I/O expander for RF switch control and a custom minimal UITask for the 64x48 SSD1306 SPI display.
Changes
New variant:
variants/m5stack_unit_c6l/UnitC6LBoard): PI4IO I/O expander (reset, direction, pull-up/pull-down), SPI bus management, display/RF switch initplatformio.ini): corrected pins (NeoPixel TX on 2, I2C SDA=10/SCL=8, SPI shared with LoRa)board_build.flash_mode = dio— fixes bootloop on ESP32-C6 rev v0.2 (see Added flash_mode=dio to avoid boot loop when flashing using merge.bin #2570)Display support (
SSD1306SPIDisplay)src/helpers/ui/SSD1306SPIDisplay.*spi_initializedflag)variants/m5stack_unit_c6l/companion/— shows PIN, scrolling node name, frequency, unread countShared fixes
src/helpers/esp32/SerialBLEInterface.cpp: fixed include"esp_mac.h"→<esp_mac.h>src/helpers/ui/DisplayDriver.h: addedMarqueeScrollerstruct