Part Number: TMS320F280034
Other Parts Discussed in Thread: SYSCONFIG, C2000WARE
I have the EPWM on the F280034 processor configured for up/down counting and I sometimes have configurations that give me the wrong timing. The clock on the processor is using the internal clock at 120MHz. I set the timebase period to 3000 counts, both clock dividers to one. Here is the screenshot of the sysconfig setup:
so I should have 6000 clock ticks for up and down divided by 120,000,000 = 50 us (20khz). Instead I get 49.7 us. The code behaves the same way on my custom board and on the Launchpad. What settings or configuration changes could cause this issue? When I tried modifying one of the ePWM example codes to do the same settings I get the correct 50us (20khz). Any suggestions on where I can look to find this problem? I hate to fix it by increasing the time base period -- it seems like that is just "pushing it under the rug".
Thank you
