How to debug SPI problems in the #MCUBoot Bootloader for #PineTime @PINE64 ? By toggling the GPIO Pins to blink the Backlight! https://github.com/lupyuen/pinetime-rust-mynewt/blob/blink/libs/pinetime_boot/src/blink.c
lupyuen/pinetime-rust-mynewt

PineTime Smart Watch firmware based on Rust and Apache Mynewt OS - lupyuen/pinetime-rust-mynewt