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AM6442: GPIO interrupt registers

rei
Mastermind 6155 points
Part Number: AM6442

Hi,

My customer wants to edit registers directly to learn GPIO interrupts. As a trial, he edited the following register.

GPIOMUX_INTRTR0_MUXCNTL_n
Address: 0x00A0 0004

CODE:
*(0x00A00004) = 0x0001003E

He read this register and it is 0x0000 0000. Curiously, this register doesn't change. Please tell me how to change them directly?

Best regards,
Rei