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Problem: - Inserting a µSD card causes RadioLib to hit a critical error and reboot - Device enters a boot loop as the SD card remains inserted Reproduction: - Insert a µSD card and power on - RadioLib reports a critical error on boot - Device reboots, repeating indefinitely Root cause: - On T-Lora Pager, SX1262 and the µSD slot share the same physical SPI bus (same SCK/MOSI/MISO pins, differentiated only by CS) - SDCARD_USE_SPI1 is intended for boards where SD is on a separate SPI bus; it initializes a second ESP32 SPI peripheral (SPI3) for SD - SPI2 is already driving those same pins for LoRa, so both controllers simultaneously drive the same GPIO lines, causing bus contention Fix: - Remove SDCARD_USE_SPI1 so both devices share a single SPI peripheral (SPI2), with CS pins providing device selection as intended - Tested on a custom fork of device-ui; LoRa and SD card map tiles both work correctly with an SD card inserted Signed-off-by: Andrew Yong <me@ndoo.sg>