Banana Pi BPI-EAI80 AIoT open source board function demo
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Banana Pi BPI-EAI80 AIoT board GPIO function test
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Can we get an example on how to select the correct UART port for printk, and also how to setup and write a given GPIO? In the keil hello world example there is really nothing helpful, it prints directly with printk, but i cannot even find where this port is initialized, nor on which UART it goes.
Also, when we compile Keil example, for example hello world, does it compile (and flash) the kernel too? because i changed the uart port in the appropriate .dts ut it had zero effect and i still cannot get it working on my test port.