sudo groupadd -f -r gpio
sudo usermod -a -G gpio user_name 
sudo cp /opt/nvidia/jetson-gpio/lib/python/Jetson/GPIO/99-gpio.rules /etc/udev/rules.d/
sudo udevadm control --reload-rules && sudo udevadm trigger

sudo chmod a+rw /dev/gpiochip0
sudo chmod a+rw /dev/gpiochip1
sudo chmod a+rw /dev/gpiochip2

#!/usr/bin/env python
# Copyright (c) 2019-2022, NVIDIA CORPORATION. All rights reserved.
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
import RPi.GPIO as GPIO
import time
# Pin Definitions
output_pin = 18  # BCM pin 18, BOARD pin 12
def main():
    # Pin Setup:
    GPIO.setmode(GPIO.BCM)  # BCM pin-numbering scheme from Raspberry Pi
    # set pin as an output pin with optional initial state of HIGH
    GPIO.setup(output_pin, GPIO.OUT, initial=GPIO.HIGH)
    print("Starting demo now! Press CTRL+C to exit")
    curr_value = GPIO.HIGH
    try:
        while True:
            time.sleep(1)
            # Toggle the output every second
            print("Outputting {} to pin {}".format(curr_value, output_pin))
            GPIO.output(output_pin, curr_value)
            curr_value ^= GPIO.HIGH
    finally:
        GPIO.cleanup()
if __name__ == '__main__':
    main()

#!/usr/bin/env python
import RPi.GPIO as GPIO
import time
# Pin Definitions
output_pin1 = 18  # BCM pin 18, BOARD pin 12
output_pin2 = 23  # BCM pin 18, BOARD pin 16
output_pin3 = 24  # BCM pin 18, BOARD pin 18
output_pin4 = 25  # BCM pin 18, BOARD pin 20
def setup_gpio():
    GPIO.setmode(GPIO.BCM)  # BCM pin-numbering scheme from Raspberry Pi
    # set pins as output pins with optional initial state of LOW
    GPIO.setup(output_pin1, GPIO.OUT, initial=GPIO.LOW)
    GPIO.setup(output_pin2, GPIO.OUT, initial=GPIO.LOW)
    GPIO.setup(output_pin3, GPIO.OUT, initial=GPIO.LOW)
    GPIO.setup(output_pin4, GPIO.OUT, initial=GPIO.LOW)
def control_status(flag=0):
    if flag == 0:
        print('0')
    elif flag == 1:
        GPIO.output(output_pin1, GPIO.HIGH)
        time.sleep(2)
        setup_gpio()
        print('1')
    elif flag == 2:
        GPIO.output(output_pin1, GPIO.HIGH)
        GPIO.output(output_pin2, GPIO.HIGH)
        time.sleep(2)
        setup_gpio()
        print('2')
    elif flag == 3:
        GPIO.output(output_pin1, GPIO.HIGH)
        GPIO.output(output_pin2, GPIO.HIGH)
        GPIO.output(output_pin3, GPIO.HIGH)
        time.sleep(1)
        print('3')
    elif flag == 4:
        setup_gpio()
        GPIO.output(output_pin1, GPIO.HIGH)
        GPIO.output(output_pin2, GPIO.HIGH)
        GPIO.output(output_pin3, GPIO.HIGH)
        GPIO.output(output_pin4, GPIO.HIGH)
        time.sleep(1)
        print('4')
while True:
    setup_gpio()
    num = input("input your num")
    control_status(int(num))