topic eTimer ISR (MBD for MPC574x) does not generate Event in Model-Based Design Toolbox (MBDT)

eTimer ISR (MBD for MPC574x) does not generate Event

abhishek_kumar1 — Mon, 25 Mar 2019 15:23:33 GMT

Hello

I am generating a pulse signal with a GPO (PF14) and trying to feed the pulse signal to PJ8.

Use eTimer to detect the rising and falling edge from the pulse (PJ8 is connected to PF14)

Use the EVENT for detection of edges to run a subsystem (where I add a counter every time a edge is detected)

I expect the "CaptureCount" Value to be growing with every edge detection but in freemaster, the Counter stays at zero.

I think somehow the Rising and Falling edge events can not be captured, when I look on Scope PF14 values, it shows a pulse with 100 Hz frequency (which is intended). My best guess is that eTimer Configuration is wrong but I can't find where.

I have attached the Matlab file and freemaster file for you.

I am using

1. Matlab 2018 b

2. Model Based Design Toolbox for MPC574x (V3.0)

Best Regards

Abhishek

Re: eTimer ISR (MBD for MPC574x) does not generate Event

mariuslucianand — Tue, 26 Mar 2019 11:47:09 GMT

Hello abhishek.kumar@chassisbrakes.com‌,

I will investigate your issue and give a reply soon.

Best Regards,
Marius

Re: eTimer ISR (MBD for MPC574x) does not generate Event

mariuslucianand — Thu, 28 Mar 2019 16:24:22 GMT

Hello abhishek.kumar@chassisbrakes.com‌,

I am sorry for the delay. Thank you very much for writing on the community about this issue.

Looking inside your model, I found the following:

Firstly, in the model I've found that the Secondary source was selected the Counter 0 input pin, but in the pin configuration I've found that the PTJ8 was selected as the forth Counter pin. So, in order to use it please select the secondary Count source the "Counter 4 input pin" option. They must be linked together.

Secondly, I've found that on our side the pin initialization for the eTimer was not performed right, so please replace the attached p code script in the src\mbdtbx_mpc574x\mbdtbx_mpc574x\mscripts\etimer location.

Thank you very much for your model sent!

I am waiting for your reply to confirm or not that the patch worked.

Best Regards,

Marius

Re: eTimer ISR (MBD for MPC574x) does not generate Event

abhishek_kumar1 — Mon, 01 Apr 2019 08:28:45 GMT

Dear mariuslucianandrei‌

It works, Thank you for the input.