Hi there,
i have a problem getting PWM working with the Jeton Orin Nano Developer Kit and the Jeson.GPIO Python library.
I have a scope connected to pin 33 on the Jetson Orin Nano board and try to run the following example i’ve got from github:
import RPi.GPIO as GPIO
import time
output_pins = {
'JETSON_XAVIER': 18,
'JETSON_NANO': 33,
'JETSON_NX': 33,
'CLARA_AGX_XAVIER': 18,
'JETSON_TX2_NX': 32,
'JETSON_ORIN': 18,
'JETSON_ORIN_NX': 33,
'JETSON_ORIN_NANO': 33
}
output_pin = output_pins.get(GPIO.model, None)
print(output_pin)
if output_pin is None:
raise Exception('PWM not supported on this board')
def main():
# Pin Setup:
# Board pin-numbering scheme
GPIO.setmode(GPIO.BOARD)
# set pin as an output pin with optional initial state of HIGH
GPIO.setup(output_pin, GPIO.OUT, initial=GPIO.HIGH)
p = GPIO.PWM(output_pin, 50)
val = 25
incr = 5
p.start(val)
print("PWM running. Press CTRL+C to exit.")
try:
while True:
time.sleep(0.25)
if val >= 100:
incr = -incr
if val <= 0:
incr = -incr
val += incr
p.ChangeDutyCycle(val)
finally:
p.stop()
GPIO.cleanup()
if __name__ == '__main__':
main()
If i run the code everything seems to look good, no errors whatsoever but if i look onto my scope, i don’t see any output. I have also tried to output the PWM on pin 15, which according to following site should also be a PWM capable pin:
With pin 15 i get the same result. No error if i run the code but nothing on the scope.
I have tried the PWM example with Linux JetPack 5.1.1 and with my own yocto image, both gave me the same result.
Do you guys can help me out or do i miss something?
Regards
