This repository was archived by the owner on Feb 4, 2023. It is now read-only.
This repository was archived by the owner on Feb 4, 2023. It is now read-only.
Wrong frequency #1
Closed
Description
Describe the bug
I'm getting wrong results.
Steps to Reproduce
I'm running a modified version of your PWM_Multi example on a Arduino Nano RP2040 Connect.
Expected behavior
9 kHz output
Actual behavior
I get 11.81kHz according to the oscilloscope.
However if I change the code to 10kHz for instance, I get 10kHz.
Debug log
Starting PWM_Multi on Nano RP2040 Connect
RP2040_PWM v1.0.0
=============================================================
Index Pin PWM_freq DutyCycle Actual Freq
=============================================================
0 4 9000.00 50[PWM] bestfit_PWM_Freq = 8999.28, PWM_Freq_diff = 0.72, Top_p_1 - 1 = 13889, vsDiv/16.0 = 1.00
[PWM] bestfit_PWM_Freq = 8999.93, PWM_Freq_diff = 0.07, Top_p_1 - 1 = 13888, vsDiv/16.0 = 1.00
[PWM] bestfit_PWM_Freq = 9000.01, PWM_Freq_diff = 0.01, Top_p_1 - 1 = 10581, vsDiv/16.0 = 1.31
[PWM] PWM_Freq = 9000.00, _actualFrequency = 9000.01, PWM_Freq_diff = 0.01
[PWM] TOP = 1DIV = 1
9000.01
[PWM]
TOP = 10581, DIV = 1, CPU_freq = 125000000
=============================================================
Screenshots
Oscilloscope screenshot here.
