topic GPIO configuration in i.MX Processors

GPIO configuration

adde_ado — Sat, 13 Nov 2021 08:11:56 GMT

Hi,

I'm using a GPIO (input) to read data from an IC circuit.

Output pin on IC that I'm trying to read is an open drain output with internal pull-up resistor.

I'm wondering how I should configure my GPIO input pin.

IOMUXC_SetPinMux(IOMUXC_SAI3_RXFS_GPIO4_IO28, 0U);

IOMUXC_SetPinConfig(IOMUXC_SAI3_RXFS_GPIO4_IO28, 0x??);

Best regards,

Ado

igorpadykov — Sun, 14 Nov 2021 23:40:53 GMT

Hi Adnan

for these settings one can look at sect.8.2 IOMUX Controller (IOMUXC)

sect.8.2.5.111 SW_MUX_CTL_PAD_SAI3_RXFS SW MUX Control Register
(IOMUXC_SW_MUX_CTL_PAD_SAI3_RXFS), sect.8.2.5.265 SW_PAD_CTL_PAD_SAI3_RXFS

SW PAD Control Register (IOMUXC_SW_PAD_CTL_PAD_SAI3_RXFS)

Best regards
igor