Trying to modify PWM frequency in SDK on imxrt1170_evk board

[Devaharsha]

The PWM example in SDK is generating 1KHz signal from PWM submodule_0 and submodule_1 in complementary mode. I want to run a servo motor using PWM. The servo uses 50Hz signal i.e. 20ms. So, anyone can help me where the modification is required for the same?

1) I have changed the code for independent mode because I have to run 2 servos with different dutycycle.

2) I have modified pwmclk but its not working.

3) I have modified pwmfreq (set to 1000UL in SDK) but I can't get 50Hz signal.

Can anyone help me where the modification is required?

[Pavel_Hernandez]

Hello,

That's maybe an issue with the source clock because the frequency is minor than the example, Did you try to change the source clock? Try to change the Prescaler too.