Jetson Orin nano GPIO LED blink not working . always LED on. pinmux excel sheet also configured and flashed correctly.
vox@ubuntu:~$ # Check JetPack version
dpkg-query --show nvidia-l4t-core
# Check OS Version
cat /etc/os-release
# Check Kernel Version
uname -r
nvidia-l4t-core 36.4.3-20250107174145
PRETTY_NAME="Ubuntu 22.04.5 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.5 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy
5.15.148-tegra
livox@ubuntu:~/jetson-gpio/samples$ gpiodetect
gpiochip0 [tegra234-gpio] (164 lines)
gpiochip1 [tegra234-gpio-aon] (32 lines)
root@ubuntu:/home/livox# gpioinfo
gpiochip0 - 164 lines:
line 0: "PA.00" "regulator-vdd-3v3-sd" output active-high [used]
line 1: "PA.01" unused input active-high
line 2: "PA.02" unused input active-high
line 3: "PA.03" unused input active-high
line 4: "PA.04" unused input active-high
line 5: "PA.05" unused input active-high
line 6: "PA.06" unused input active-high
line 7: "PA.07" unused input active-high
line 8: "PB.00" unused input active-high
line 9: "PC.00" unused input active-high
line 10: "PC.01" unused input active-high
line 11: "PC.02" unused input active-high
line 12: "PC.03" unused input active-high
line 13: "PC.04" unused input active-high
line 14: "PC.05" unused input active-high
line 15: "PC.06" unused input active-high
line 16: "PC.07" unused input active-high
line 17: "PD.00" unused input active-high
line 18: "PD.01" unused input active-high
line 19: "PD.02" unused input active-high
line 20: "PD.03" unused input active-high
line 21: "PE.00" unused input active-high
line 22: "PE.01" unused input active-high
line 23: "PE.02" unused input active-high
line 24: "PE.03" unused input active-high
line 25: "PE.04" unused input active-high
line 26: "PE.05" unused input active-high
line 27: "PE.06" unused input active-high
line 28: "PE.07" unused input active-high
line 29: "PF.00" unused input active-high
line 30: "PF.01" unused input active-high
line 31: "PF.02" unused input active-high
line 32: "PF.03" unused input active-high
line 33: "PF.04" unused input active-high
line 34: "PF.05" unused input active-high
line 35: "PG.00" "Force Recovery" input active-low [used]
line 36: "PG.01" unused input active-high
line 37: "PG.02" unused input active-high
line 38: "PG.03" unused input active-high
line 39: "PG.04" unused input active-high
line 40: "PG.05" unused output active-high
line 41: "PG.06" unused input active-high
line 42: "PG.07" "cd" input active-low [used]
line 43: "PH.00" unused input active-high
line 44: "PH.01" unused input active-high
line 45: "PH.02" unused input active-high
line 46: "PH.03" unused input active-high
line 47: "PH.04" unused input active-high
line 48: "PH.05" unused input active-high
line 49: "PH.06" unused output active-high
line 50: "PH.07" unused output active-high
line 51: "PI.00" unused input active-high
line 52: "PI.01" unused input active-high
line 53: "PI.02" unused input active-high
line 54: "PI.03" unused input active-high
line 55: "PI.04" unused input active-high
line 56: "PI.05" kernel input active-high [used]
line 57: "PI.06" unused input active-high
line 58: "PJ.00" unused input active-high
line 59: "PJ.01" unused input active-high
line 60: "PJ.02" unused input active-high
line 61: "PJ.03" unused input active-high
line 62: "PJ.04" unused input active-high
line 63: "PJ.05" unused input active-high
line 64: "PK.00" unused input active-high
line 65: "PK.01" unused input active-high
line 66: "PK.02" unused input active-high
line 67: "PK.03" unused input active-high
line 68: "PK.04" unused output active-high
line 69: "PK.05" unused output active-high
line 70: "PK.06" unused input active-high
line 71: "PK.07" unused input active-high
line 72: "PL.00" unused input active-high
line 73: "PL.01" unused input active-high
line 74: "PL.02" unused input active-high
line 75: "PL.03" unused input active-high
line 76: "PM.00" kernel input active-high [used]
line 77: "PM.01" unused input active-high
line 78: "PM.02" unused input active-high
line 79: "PM.03" unused input active-high
line 80: "PM.04" unused input active-high
line 81: "PM.05" unused input active-high
line 82: "PM.06" unused input active-high
line 83: "PM.07" unused input active-high
line 84: "PN.00" unused input active-high
line 85: "PN.01" unused input active-high
line 86: "PN.02" unused input active-high
line 87: "PN.03" unused input active-high
line 88: "PN.04" unused input active-high
line 89: "PN.05" unused input active-high
line 90: "PN.06" unused input active-high
line 91: "PN.07" unused input active-high
line 92: "PP.00" unused input active-high
line 93: "PP.01" unused input active-high
line 94: "PP.02" unused input active-high
line 95: "PP.03" unused input active-high
line 96: "PP.04" unused input active-high
line 97: "PP.05" unused input active-high
line 98: "PP.06" unused input active-high
line 99: "PP.07" unused input active-high
line 100: "PQ.00" unused input active-high
line 101: "PQ.01" unused input active-high
line 102: "PQ.02" unused input active-high
line 103: "PQ.03" unused output active-high
line 104: "PQ.04" unused input active-high
line 105: "PQ.05" unused input active-high
line 106: "PQ.06" unused input active-high
line 107: "PQ.07" unused input active-high
line 108: "PR.00" unused input active-high
line 109: "PR.01" unused input active-high
line 110: "PR.02" unused input active-high
line 111: "PR.03" unused input active-high
line 112: "PR.04" unused input active-high
line 113: "PR.05" unused input active-high
line 114: "PX.00" kernel input active-high [used]
line 115: "PX.01" kernel input active-high [used]
line 116: "PX.02" unused input active-high
line 117: "PX.03" unused input active-high
line 118: "PX.04" unused input active-high
line 119: "PX.05" unused input active-high
line 120: "PX.06" unused input active-high
line 121: "PX.07" unused input active-high
line 122: "PY.00" unused input active-high
line 123: "PY.01" unused input active-high
line 124: "PY.02" unused input active-high
line 125: "PY.03" unused input active-high
line 126: "PY.04" unused input active-high
line 127: "PY.05" unused input active-high
line 128: "PY.06" unused input active-high
line 129: "PY.07" unused input active-high
line 130: "PZ.00" unused input active-high
line 131: "PZ.01" "interrupt" input active-high [used]
line 132: "PZ.02" unused input active-high
line 133: "PZ.03" unused input active-high
line 134: "PZ.04" unused input active-high
line 135: "PZ.05" unused input active-high
line 136: "PZ.06" unused input active-high
line 137: "PZ.07" unused input active-high
line 138: "PAC.00" unused output active-high
line 139: "PAC.01" unused input active-high
line 140: "PAC.02" unused input active-high
line 141: "PAC.03" unused input active-high
line 142: "PAC.04" unused input active-high
line 143: "PAC.05" unused input active-high
line 144: "PAC.06" unused input active-high
line 145: "PAC.07" unused input active-high
line 146: "PAD.00" unused input active-high
line 147: "PAD.01" unused input active-high
line 148: "PAD.02" unused input active-high
line 149: "PAD.03" unused input active-high
line 150: "PAE.00" unused input active-high
line 151: "PAE.01" unused input active-high
line 152: "PAF.00" unused input active-high
line 153: "PAF.01" unused input active-high
line 154: "PAF.02" unused input active-high
line 155: "PAF.03" unused input active-high
line 156: "PAG.00" unused input active-high
line 157: "PAG.01" unused input active-high
line 158: "PAG.02" unused input active-high
line 159: "PAG.03" unused input active-high
line 160: "PAG.04" unused input active-high
line 161: "PAG.05" unused input active-high
line 162: "PAG.06" unused input active-high
line 163: "PAG.07" unused input active-high
gpiochip1 - 32 lines:
line 0: "PAA.00" unused input active-high
line 1: "PAA.01" unused input active-high
line 2: "PAA.02" unused input active-high
line 3: "PAA.03" unused input active-high
line 4: "PAA.04" unused output active-high
line 5: "PAA.05" "regulator-vdd-3v3-pcie" output active-high [used]
line 6: "PAA.06" unused input active-high
line 7: "PAA.07" unused input active-high
line 8: "PBB.00" unused input active-high
line 9: "PBB.01" unused input active-high
line 10: "PBB.02" unused input active-high
line 11: "PBB.03" unused output active-high
line 12: "PCC.00" unused output active-high
line 13: "PCC.01" unused output active-high
line 14: "PCC.02" unused output active-high
line 15: "PCC.03" unused output active-high
line 16: "PCC.04" unused input active-high
line 17: "PCC.05" unused input active-high
line 18: "PCC.06" unused input active-high
line 19: "PCC.07" unused input active-high
line 20: "PDD.00" unused input active-high
line 21: "PDD.01" unused input active-high
line 22: "PDD.02" unused input active-high
line 23: "PEE.00" unused input active-high
line 24: "PEE.01" unused input active-high
line 25: "PEE.02" unused input active-high
line 26: "PEE.03" unused input active-high
line 27: "PEE.04" "Power" input active-low [used]
line 28: "PEE.05" unused input active-high
line 29: "PEE.06" unused input active-high
line 30: "PEE.07" unused input active-high
line 31: "PGG.00" unused input active-high
import RPi.GPIO as GPIO
import time
# Define the GPIO pin (using BOARD mode, refer to physical pin number)
LED_PIN = 12 # Physical pin 12
# Set up GPIO mode
GPIO.setmode(GPIO.BOARD) # Use physical pin numbering
GPIO.setup(LED_PIN, GPIO.OUT) # Set pin as an output
# Blink the LED
try:
while True:
GPIO.output(LED_PIN, GPIO.HIGH) # LED ON
print("LED ON")
time.sleep(0.5)
GPIO.output(LED_PIN, GPIO.LOW) # LED OFF
print("LED OFF")
time.sleep(0.5)
except KeyboardInterrupt:
print("Exiting...")
finally:
GPIO.cleanup() # Reset GPIO settings