Hi, There appears to be no pwm signal coming from the pwm_f pin on my VIM1.
I’ve tried both pwmchip options that show up in /sys/class/pwm/ with no effect.
root@Khadas:~# echo 422 > /sys/class/gpio/export
root@Khadas:~# echo 507 > /sys/class/gpio/export
root@Khadas:~# echo out > /sys/class/gpio/gpio422/direction
root@Khadas:~# echo out > /sys/class/gpio/gpio507/direction
root@Khadas:~# echo 1 > /sys/class/gpio/gpio422/value
root@Khadas:~# echo 0 > /sys/class/gpio/gpio507/value
root@Khadas:~# echo 1 > /sys/class/pwm/pwmchip0/export
root@Khadas:~# echo 1 > /sys/class/pwm/pwmchip4/export
root@Khadas:~# echo 1000000 > /sys/class/pwm/pwmchip0/pwm1/period
root@Khadas:~# echo 1000000 > /sys/class/pwm/pwmchip4/pwm1/period
root@Khadas:~# echo 500000 > /sys/class/pwm/pwmchip0/pwm1/duty_cycle
root@Khadas:~# echo 500000 > /sys/class/pwm/pwmchip4/pwm1/duty_cycle
root@Khadas:~# echo 1 > /sys/class/pwm/pwmchip0/pwm1/enable
root@Khadas:~# echo 1 > /sys/class/pwm/pwmchip4/pwm1/enable
I have This DC micro controller which requires two control pins and one PWM pin, the control pins I’m using are GPIOH_5 and GPIOAO_6 which have been independently tested to give 0 or 3.3 volts from a 0 or 1 in the gpio value.
Is there anything I need to do to enable pwm_f or is there another pin I can use?