Hi
I am running ubuntu 18 on rock64 and I am trying to run my servo motor through pwm gpio pins .
I am facing an pwm error when I tried to run example program provided in your repo
python R64-GPIO-test.py
error
Testing R64.GPIO Module...
Module Variables:
Name Value
GPIO.ROCK ROCK
GPIO.BOARD BOARD
GPIO.BCM BCM
GPIO.OUT out
GPIO.IN in
GPIO.HIGH 1
GPIO.LOW 0
GPIO.PUD_UP 0
GPIO.PUD_DOWN 1
GPIO.VERSION 0.6.3
GPIO.RPI_INFO {'P1_REVISION': 3, 'RAM': '1024M', 'REVISION': 'a22082', 'TYPE': 'Pi 3 Model B', 'PROCESSOR': 'BCM2837', 'MANUFACTURER': 'Embest'}
Error: Unable to export GPIO
Error: Unable to set GPIO direction
Error: Unable to export GPIO
Error: Unable to set GPIO direction
Testing GPIO Input/Output:
You must setup() the GPIO channel (BOARD 16) first
Output State : None
You must setup() the GPIO channel (BOARD 16) as an output first
You must setup() the GPIO channel (BOARD 18) first
Input State : None
Waiting 3 seconds for interrupt...
You must setup() the GPIO channel (BOARD 18) as an input first
Timeout!
You must setup() the GPIO channel (BOARD 16) as an output first
Testing PWM Output - DutyCycle - High Precision:
60Hz at 50% duty cycle for 1 second
Traceback (most recent call last):
File "R64-GPIO-test.py", line 67, in
p.start(50)
File "/home/rock64/sdl/sen/Rock64-R64.GPIO/R64/_GPIO.py", line 351, in start
self.pwm_calc()
File "/home/rock64/sdl/sen/Rock64-R64.GPIO/R64/_GPIO.py", line 368, in pwm_calc
self.sleep_low = (1.0 / self.freq) * ((100 - self.dutycycle) / 100.0)
AttributeError: PWM instance has no attribute 'freq'
sdvcrx
commented
6 years ago
Hi I am running ubuntu 18 on rock64 and I am trying to run my servo motor through pwm gpio pins .
I am facing an pwm error when I tried to run example program provided in your repo
python R64-GPIO-test.py
error
Testing R64.GPIO Module...
Module Variables: Name Value
GPIO.ROCK ROCK GPIO.BOARD BOARD GPIO.BCM BCM GPIO.OUT out GPIO.IN in GPIO.HIGH 1 GPIO.LOW 0 GPIO.PUD_UP 0 GPIO.PUD_DOWN 1 GPIO.VERSION 0.6.3 GPIO.RPI_INFO {'P1_REVISION': 3, 'RAM': '1024M', 'REVISION': 'a22082', 'TYPE': 'Pi 3 Model B', 'PROCESSOR': 'BCM2837', 'MANUFACTURER': 'Embest'} Error: Unable to export GPIO Error: Unable to set GPIO direction Error: Unable to export GPIO Error: Unable to set GPIO direction
Testing GPIO Input/Output: You must setup() the GPIO channel (BOARD 16) first Output State : None You must setup() the GPIO channel (BOARD 16) as an output first You must setup() the GPIO channel (BOARD 18) first Input State : None
Waiting 3 seconds for interrupt... You must setup() the GPIO channel (BOARD 18) as an input first Timeout! You must setup() the GPIO channel (BOARD 16) as an output first
Testing PWM Output - DutyCycle - High Precision: 60Hz at 50% duty cycle for 1 second Traceback (most recent call last): File "R64-GPIO-test.py", line 67, in
p.start(50)
File "/home/rock64/sdl/sen/Rock64-R64.GPIO/R64/_GPIO.py", line 351, in start
self.pwm_calc()
File "/home/rock64/sdl/sen/Rock64-R64.GPIO/R64/_GPIO.py", line 368, in pwm_calc
self.sleep_low = (1.0 / self.freq) * ((100 - self.dutycycle) / 100.0)
AttributeError: PWM instance has no attribute 'freq'