iMX280 GPIO configuration

manjunathdn — Fri, 15 May 2015 15:41:52 GMT

How can we drive the GPIO's of iMX280 to high impedance or tri-state? Can someone provide details of the GPIO configuration / settings?

Re: iMX280 GPIO configuration

igorpadykov — Sat, 16 May 2015 19:03:18 GMT

Hi Manjunath

this is provided by HW_PINCTRL_DOEx register, from

sect.9.4.53 PINCTRL Bank 0 Data Output Enable Register

(HW_PINCTRL_DOE0) MCIMX28RM

For pins in bank 0 that are configured as GPIOs, a 1 in this register will enable the

corresponding bit value from HW_PINCTRL_DOUTxx register to be driven out the pin,

and a 0 in this register will disable the corresponding driver.

Best regards

igor

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