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How should I define GPIOs

Identifying GPIO’s The i.MX23 has four banks of pins. Three of them can serve as GPIOs banks numbered as 0,1, and 2. Each bank has 32 pins numbered as 0,1,…,31. Kernel numbers are calculated as: <number> = <pin_number_on_bank> + <bank_number> * 32 For example GPIO 91 correspond to pin 27 on 2 bank (91 =

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