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Error in using ePWM (TI F28027 LaunchPad) - Error evaluating 'InitFcn' callback of C280x/C2833x ePWM block (mask) 'untitled/ePWM'.

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Deep
Deep on 19 Feb 2019
Commented: Deep on 19 Feb 2019
I want to measure speed of motor, for that purpose I'm generating interrupt everytime motor makes one revolution. Now to calculate speed, I need to count how many pulses have been produced in specific time period. For this purpose I planned to use timer using ePWM and generating interrupt at every 1 sec. However it seems I cannot generate time dealys more than 1.something mSec (it gave me error). So for test purposes I tried generating pulse of 1mSec period, however I ran into following problem. Please help me in fixing this error. I'm using MATLAB2018a with TI C2000 F28027F LaunchPad which as base frequency of 60Mhz. Here's how error looks
Error
For reference purposes, I'm also attaching screenshots of ePWM configuration if that helps (yeah right, I have no clue what I'm doing wrong, pls help me!)
matlab1blockparas1.png
matlab1blockparas2.png
matlab1blockparas3.png
Also, here's the snapshot of interrupt settings for ePWM1 interrupt.
matlab1hardwareinterruptsettings.PNG
Let me know if you need any more information, moderators may remove information which they think is unnecessary and will rather complicate things than being helpful to future visitors. Thanks in advance.

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Accepted Answer

Antonin
Antonin on 19 Feb 2019
Hi Deep,
Pick your PWM block from the C2802x library.
The one you are using right now is for a different family of processors.
The blue label in the top right corner of the block should mention C2802x/03x/05x/06x
I hope it helps,
Thanks,
Antonin.

  1 Comment

Deep
Deep on 19 Feb 2019
Thank you it worked. I got carried away by C280x name, didn't care to read that there's C2802x also ^^"!

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