# GPIO with python library does not work

**URL:** <https://forums.developer.nvidia.com/t/gpio-with-python-library-does-not-work/267894>\
**Category:** Jetson Xavier NX\
**Tags:** kernel\
**Created:** [September 28, 2023, 12:06pm UTC](https://forums.developer.nvidia.com/t/gpio-with-python-library-does-not-work/267894 "2023-09-28T12:06:28Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![saxosun](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@saxosun](https://forums.developer.nvidia.com/u/saxosun)\
**Post date:** [September 28, 2023, 12:06pm UTC](https://forums.developer.nvidia.com/t/gpio-with-python-library-does-not-work/267894/1 "2023-09-28T12:06:28Z")

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Hello,  
I am using the python jetson-gpio library on a jetson xavier nx. Launching any of the files inside the samples folder, I got the fallowing error message

amr@moto:~/Downloads/jetson-gpio/samples$ sudo python3 test\_all\_pins.py  
Testing pin 7 as OUTPUT; CTRL-C to test next pin  
Traceback (most recent call last):  
File “test\_all\_pins.py”, line 89, in   
GPIO.setup(pin, GPIO.OUT)  
File “/usr/local/lib/python3.7/dist-packages/Jetson.GPIO-2.1.3-py3.7.egg/Jetson/GPIO/gpio.py”, line 360, in setup  
File “/usr/local/lib/python3.7/dist-packages/Jetson.GPIO-2.1.3-py3.7.egg/Jetson/GPIO/gpio.py”, line 155, in \_do\_one\_channel  
File “/usr/local/lib/python3.7/dist-packages/Jetson.GPIO-2.1.3-py3.7.egg/Jetson/GPIO/gpio\_cdev.py”, line 189, in chip\_open\_by\_label  
Exception: tegra194-gpio: No such gpio device registered

Any suggestion to solve the issue is appreciated  
Thanks  
Salvatore

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<div class="post-metadata">

**Author:** ![mjain](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/mjain/32/14043_2.png) [@mjain](https://forums.developer.nvidia.com/u/mjain)\
**Post date:** [November 17, 2023, 10:43am UTC](https://forums.developer.nvidia.com/t/gpio-with-python-library-does-not-work/267894/2 "2023-11-17T10:43:06Z")

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Moved to the Jetson Xavier NX forum.

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**Author:** ![kayccc](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/kayccc/32/14043_2.png) [@kayccc](https://forums.developer.nvidia.com/u/kayccc)\
**Post date:** [December 5, 2023, 6:05am UTC](https://forums.developer.nvidia.com/t/gpio-with-python-library-does-not-work/267894/3 "2023-12-05T06:05:20Z")

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Sorry for the late response.  
Is this still an issue to support? Any result can be shared?

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**Author:** ![KevinFFF](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/kevinfff/32/15508_2.png) [@KevinFFF](https://forums.developer.nvidia.com/u/KevinFFF)\
**Post date:** [December 6, 2023, 8:15am UTC](https://forums.developer.nvidia.com/t/gpio-with-python-library-does-not-work/267894/5 "2023-12-06T08:15:19Z")

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**There is no update from you for a period, assuming this is not an issue any more.  
Hence we are closing this topic. If need further support, please open a new one.  
Thanks**

Are you uisng the devkit or custom board for Xavier NX?  
What’s your Jetpack version in use?

Are you trying to configure PIN7?

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<div class="post-metadata">

**Author:** ![kayccc](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/kayccc/32/14043_2.png) [@kayccc](https://forums.developer.nvidia.com/u/kayccc)\
**Post date:** [December 19, 2023, 6:45am UTC](https://forums.developer.nvidia.com/t/gpio-with-python-library-does-not-work/267894/7 "2023-12-19T06:45:53Z")

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