Digitalio GPIO code doesn't work, but RPI.GPIO one does. Why?

[bujna94]

Hi, this code doesn’t work -

import board
import digitalio
import time

bottomCoverPin = digitalio.DigitalInOut(board.D27) 
bottomCoverPin.direction = digitalio.Direction.OUTPUT
bottomCoverPin.value = False  # Set the initial state to low (OFF)

def unlockBottomCover(bottomCoverPin):
    try:
        bottomCoverPin.value = True  # Unlock top cover for 10s
        time.sleep(10)
        bottomCoverPin.value = False  # Lock it back after 10 seconds
        return {'message': 'unlockBottomCover', 'status': 'success'}
    except:
        return {'message': 'unlockBottomCover', 'status': 'error'}

it returns:

(ml) (base) scotty@ESR019:~$ /home/scotty/miniforge3/envs/ml/bin/python /home/scotty/Jetson_ESR/MQTT/test.py
WARNING: Carrier board is not from a Jetson Developer Kit.
WARNNIG: Jetson.GPIO library has not been verified with this carrier board,
WARNING: and in fact is unlikely to work correctly.
Traceback (most recent call last):
  File "/home/scotty/Jetson_ESR/MQTT/test.py", line 5, in <module>
    bottomCoverPin = digitalio.DigitalInOut(board.D27) 
  File "/home/scotty/miniforge3/envs/ml/lib/python3.8/site-packages/digitalio.py", line 183, in __init__
    self.direction = Direction.INPUT
  File "/home/scotty/miniforge3/envs/ml/lib/python3.8/site-packages/digitalio.py", line 213, in direction
    self._pin.init(mode=Pin.IN)
  File "/home/scotty/miniforge3/envs/ml/lib/python3.8/site-packages/adafruit_blinka/microcontroller/tegra/t234/pin.py", line 43, in init
    GPIO.setup(self.id, GPIO.IN)
  File "/home/scotty/miniforge3/envs/ml/lib/python3.8/site-packages/Jetson/GPIO/gpio.py", line 333, in setup
    ch_infos = _channels_to_infos(channels, need_gpio=True)
  File "/home/scotty/miniforge3/envs/ml/lib/python3.8/site-packages/Jetson/GPIO/gpio.py", line 124, in _channels_to_infos
    return [_channel_to_info_lookup(c, need_gpio, need_pwm)
  File "/home/scotty/miniforge3/envs/ml/lib/python3.8/site-packages/Jetson/GPIO/gpio.py", line 124, in <listcomp>
    return [_channel_to_info_lookup(c, need_gpio, need_pwm)
  File "/home/scotty/miniforge3/envs/ml/lib/python3.8/site-packages/Jetson/GPIO/gpio.py", line 110, in _channel_to_info_lookup
    raise ValueError("Channel %s is invalid" % str(channel))
ValueError: Channel SPI1_SCK is invalid
Exiting... 
Cleaning up pins
(ml) (base) scotty@ESR019:~$

but this code works just fine on the same device -

import RPi.GPIO as GPIO
import time

# Pin Definitions
output_pin = 27

GPIO.setmode(GPIO.BCM)  
GPIO.setup(output_pin, GPIO.OUT, initial=GPIO.HIGH) 
print("Cover is unlocked for 10s...")

time.sleep(10)
GPIO.output(output_pin, GPIO.LOW) 
GPIO.cleanup()

Why is that? I don’t have any SPI devices connected

[KevinFFF]

Hi bujna94,

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

May I know what’s your use case? (i.e. which pin would you like to control?)

@bujna94

import digitalio

It seems a 3rd-party API to control GPIO.
From your failed log, you should check the “Channel SPI1_SCK is invalid” issue.

We would suggest using Jeton.GPIO to control GPIO in python.