AM4372: GPIO is not worked as input

Sung-IL

Part Number: AM4372

Dear Champs,

My customer set L24 pin(McASP0_AHCLKX) to GPIO0_3(EINT1), but found EINT1 was not worked when it was set as input.

When they set it as input, they found this pin was always high even at low signal input.

There was no issue and found high_log_toggle when they set it as output.

Could you please check their pin mux setting in below?

Their HW schematic is as below.

Their pinmux configuration code is as below.

Their SW is RTOS SDK v6.3.

Thanks and Best Regards,

SI.

0 Sung-IL over 3 years ago

Dear Champs,

It works well and this GPIO can be worked as input when UART bootmode was used, but it does not worked as input at QSPI boot mode.

Why it is not worked as input at QSPI boot mode?

Thanks and Best Regards,

SI.

+1 PaulM over 3 years ago in reply to Sung-IL

Sounds like you are not configuring the GPIO registers? Make sure GPIO0_3 is configured as input in the corresponding GPIO_OE register.

+1 Sung-IL over 3 years ago in reply to PaulM

Hi PaulM,

Thanks for the response.

This issue was resolved by adding pinmux function again in the SBL.

Thanks and Best Regards,

SI.

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