TMS320F28379D: EPWM set up using SysConfig is not working

Hello,

In the first picture, change the emulation mode to free run. If it does not help, change count up after sync event. Let see if that fixes the issue.

Hi Stevan,

Thanks for the response. I tried both. It didn't change anything.

Also, the epwm_ecap example is also not running on my board, following the instructions here:

dev.ti.com/.../node

Is there hardware configuration that might interfere with pwm operation?

Hello,

Initially, could you try any of the ePWM driverlib C2000Ware examples to see if they work for you, please? We can start from there. 

C:\ti\c2000\C2000Ware_5_04_00_00\driverlib\f2837xd\examples\cpu1\epwm

I tried ex1 (example 1) and that works. I'm going to study the example and see what I could learn from it. Does that give you any idea on what the issue with the other setups are?

Hello Ehsan,

My advice would be to take working ePWM C2000Ware example that is closest to your application. Then, slowly adding your features step by step and test where it stops functioning. This would give you more insight where error comes from.

My application uses both CPUs. Could there be anything from CPU2 setting interfering with that? 

I'm running to another issue. Now that I want to import some of the other epwm projects they seem to unavailable. Any ideas what's wrong here:

Hello,

They would be unavailable if they already exist in your CCS workspace. 

Firstly, go to ePWM folder to reduce the list of examples. Then select the box. If it says x then it's not available. you need to first delete it from CCS12 workspace.

Thanks for the response. The reason I hadn't gone into the epwm folder was to highlight the difference between how that folder is seen by CCS vs the other folders. I didn't have any of the projects of epwm folder open in the workspace either. My workaround for that problem was to reinstall C2000Ware in a different folder and import the projects from the new location. I hope you could explain what's going on from this workaround for future reference. 

I should add that I had imported one project from ePWM folder (example 1) prior to CCS not finding any other projects (examples) in that folder anymore.

I also realized that depending on where in the code I sync the two CPUs (using IPC API) pwm starts/stops working. When pwm works, messaging between CPUs (and the SCI module on CPU1) stop working. I have a premonition that this may have something to do with peripheral clocks?

Hello,

Sorry to hear that you had issues with importing project. This shouldn't be the case if C2000Ware is installed in proper repo. I would suggest removing all old install files and reinstalling the C2000Ware.

Using two CPUs could make hardware issue if not set up properly. Please refer to C2000Ware dual core example to check proper set up.

Thank you for noting it down. I'm glad you resolved the issue. Have a good day.