On Thu, May 12, 2016 at 6:55 PM, Martin Galvan <martin.gal...@tallertechnologies.com> wrote: > Hi Punit! Sorry I didn't answer, I was off sick for a couple days. Marcos > and I are a bit crowded so we can't review every bit of your patch right now > (plus we don't have our BBB anymore). Could you make the RGB test work using > SW code only? Hi all,
I tested test suite which only use TI SW API. Like as follow : https://github.com/punitvara/rtems_gsoc16/blob/master/pwm/fail.c Whatever frequency I change LED glows continuously only. In between CMPA or CMPB whichever is higher , that respective EPWMA or EPWMB is more brighter.That is the only difference I found out. Second test case which is with custom function not with TI SW only : https://github.com/punitvara/rtems_gsoc16/blob/master/pwm/success.c Here whatever frequency I pass as argument , LED blinks at same rate. There is no difference. If I set different duty cycle for EPWMA and EPWMB, LED glowing time is more for which duty cycle is higher. But it seems in this case PWM wave generates , not sure at which frequency. To calculate frequency(UP or DOWN count only) equation is TPWM = (TBPRD + 1) x TBCLK FPWM = 1/TPWM In program we need to assign value to TBPRD register. Another important equation to remember is TBCLK = SYSCLKOUT/(HSPCLKDIV *CLKDIV) How to calculate duty cycle ? Simply value need to pass to CMPA or CMPB register. I am trying to generate testcase which can generate different frequencies with different duty cycle on LED with TI SW. I tried to debug with printf but dont know how to use that results. Can you suggest me any test cases so that I can able to find what is the problem with code ? Any conclusion why in one case LED just blinks and in another it just glows continuous. ? Any help will be appreciated. :-) Thank you, Punit Vara _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
