I am using gpio pin using Iot#0. However, even though I was referring to the Legato site and programming it, I kept failing. The final goal is to use Serial Communicating by using RS-232 as a GPIO pin, but before that, simple LED control and switch control with a pin would be a great help. I woul…

I don’t see UART is multiplexed with GPIO function in the PTS, so I don’t think you can make it as GPIO pin.

umm… I amended my question!! I just use Serial Communicating by using RS-232

You can use sysfs command to control gpio [image] Controlling WP_GPIO_1 / GPIO22 problem mangOH Red Hello I try to control gpio22 (WP_GPIO_2 on the mangoh Red, pin13 on PI header) but I get a warning when starting the app: -WRN- | gpioService[789]/sysfsGpio T=main | gpi…

I used the sysfs command, but I don’t know what api can be used to produce the desired output on the digital pin through which function call can be used.

gpioCf3Demo_GPIO_output.rar (2.7 KB) You can use this app to control GPIO 13.

thanks jyijyi!! After I try to use this application, I reply again :smiley: :smiley: :smiley:

Is there a sample app using gpio pin?

mangOH Yellow

jyijyi May 27, 2020, 11:11am 5

You can use sysfs command to control gpio

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Is there a sample app using gpio pin?

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