how to Read value of an output GPIO with NCS

[helen]

Hi,

I am develop with nRF5340, ncs1.5.1.

I am puzzled how to read the value of an output GPIO.

I saw the function gpio_pin_get_raw and gpio_port_get_raw, the comment said they are used to get the value of input pin/port.

1、How can I read value from output GPIO？

2、I tried to configure a GPIO with the code below, and am surprised of than I can get the value of GPIO with gpio_pin_get_raw. will that have any bad impact……

[qwertynoon]

https://devzone.nordicsemi.com/f/nordic-q-a/11275/read-gpio-output-state

[helen]

Hello，

The post you gave is about nRF5 SDK, what I mentioned is nRF connect SDK.

[qwertynoon]

There were no precedents in history for reading OUTPUT GPIO STATE.

I would recomend to set variable

uint32_t GPIO_state = 0x00;

and then when you change the state of output you should write according bit in GPIO_state variable.

GPIO_state |=  (1 << gpio_number); // 0 to 1 state

GPIO_state &= ~(1 << gpio_number); // 1 to 0 state

There is no other way for me.