Aria technical documentation Buy
The PIO lines called PAx, PBx and PCx can be configured in up to four different ways. Please refer to the ATSAM9G25 datasheet to have a complete reference.
Be careful to check whether the line reset state is compatible with your application board because it is changed to the Linux default config during the bootstrap after at least 500 ms.
Be also careful to not leave tracks or vias not covered by solder under the Aria board, since there are testing pads on the Aria bottom.
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