I’m trying to configure a single pin on the mangoh yellow Iot board to send a simple toggling signal (on/off type of thing). I’m having issues using the le_gpio api, it either hangs the app or crashes the process completely. When it crashes, I get this error: user.emerg Legato: *EMR* | app@0[3097]/…

You can try the app here [image] Is there a sample app using gpio pin? mangOH Yellow 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.

Thanks, @jyijyi . That app seems to work fine, but when I copy the necessary lines from the .adef, .cdef and .c files I get inconsistent behavior in my app. Sometimes the activation of the GPIO pin works, but in all cases it crashes my app. These are the log lines that I get, sometimes they are in di…

You can port your code to this sample app which already working fine. pin 25 in the Iot board actually is connected to the GPIO13 of the module.

Ok, the issue is that I don’t want the implementation that is provided in the example app. I’m trying to make an app that the user inputs a CLI command and the app toggles the GPIO. And, ok, is there a resource that shows which GPIOXX is connected to each pin? I’ve seen some mappings, but none of t…

You can set the application to be manually start in .adef. And you can start the app by “app start” command. BTW, you can check the schematic of mangoh red: MangoRed_DV6_final.pdf 1609.24 KB

Connecting to GPIO on WP7702

mangOH Yellow

jyijyi April 22, 2021, 12:21am 2

You can try the app here

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Connecting to GPIO on WP7702

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