MCU-PLUS-SDK-AM243X: EPWM cannot be output normally about the AM243x-LP

Shaoxing Ke

Expert 3590 points

Part Number: MCU-PLUS-SDK-AM243X

Hi Experts,

I am using the EPWM Duty Cycle example, as below:

C:\ti\mcu_plus_sdk_am243x_08_01_00_36\examples\drivers\epwm\epwm_duty_cycle

and I know the example

Configures ePWM0 to generate a 1KHz signal with 25% duty cycle for 60 seconds

So, I use the Oscilloscope to connect the Pin 1 of J2 header on am243x-lp board, but I did not see any change as below:

I am not sure that is this example normal? and I saw that the example is indeed finished, but it reports the errors as below:

over 3 years ago

0 Shaoxing Ke over 3 years ago

TI__Expert 3590 points

Hi all,

Or how should I modify this example, the duty cycle waveform can be seen on my J2-Pin pin?

0 Ming Wei over 3 years ago in reply to Shaoxing Ke

TI__Guru 55345 points

Hi Shaoxing,

I think the EPWM example for AM243x LP has some issue. If you check the example.sfycfg, you will found the EPWM was set for Pin U20, while the EPWM example for AM243x EVM is using the V21 which is for Pin 1 of J2 header (EHRPWM0_A). The quickest thing to do is change it from U20 to V21. I will file a bug against the EPWM example for AM243x LP.