blink LED using AT435

[rusefillc]

First milestone would be to blink LED using ChibiOS using AT-START-F435 or AT-START-F437 board - any stm32f4 demo which just blinks LED

target branch not master but https://github.com/rusefi/ChibiOS/tree/stable_20.3.x.rusefi

[rusefillc]

а у меня не замигало хотя openocd_rtos + gdb показывается blinker thread

[rusefillc]

@dron0gus says 437 blinks

/dev/ttyACM0 baud rate 38400

AT-437.mp4