Also seeing your code would help. On Tue, Jul 26, 2016 at 10:05 PM, William Hermans <[email protected]> wrote:
> You have not mentioned which kernel you're using. > > On Tue, Jul 26, 2016 at 9:34 AM, <[email protected]> wrote: > >> Hello Guys, >> >> I am trying to control the PWM Output over a C++ program. However I >> cannot get it to work. It seems like I am unable to activate the PWM output. >> >> Here is what I already tried: >> I loaded the following capes: >> 0: PF---- -1 >> 1: PF---- -1 >> 2: PF---- -1 >> 3: PF---- -1 >> 4: P-O-L- 0 Override Board Name,00A0,Override Manuf,BB-UART1 >> 5: P-O-L- 1 Override Board Name,00A0,Override Manuf,BB-UART5 >> 6: P-O-L- 2 Override Board Name,00A0,Override Manuf,am33xx_pwm >> 8: P-O-L- 4 Override Board Name,00A0,Override Manuf,BB-PWM0 >> 9: P-O-L- 5 Override Board Name,00A0,Override Manuf,BB-PWM1 >> 10: P-O-L- 6 Override Board Name,00A0,Override Manuf,BB-PWM2 >> After that several pwmchip<number> directories appear in /sys/class/pwm. >> All of those contain a export file which I can use to create pwm0 and in >> some pwmchip's also a pwm1 directory. >> Inside these pwm[01] subfolders are files for duty_cycle, period and >> similar but writing duty_cycle=5000, period=10000 and enable=1 into them >> does not cause any output to occur. >> A run file like in some other tutorials does not exist in our case. >> >> I also tried to follow the instructions of the Derek Molloy book, and >> different guides in this google groups forum. However none of these seem to >> apply to my kernel. >> >> What am I missing? It seems like the outputs are not activated, or >> something similiar? Does anybody know how to get the PWMs to work, and how >> to interface them correctly? >> >> >> Best Regards, >> Phil >> >> >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/25541a5f-3b5c-4a5d-92fe-3b70bfd8cb48%40googlegroups.com >> <https://groups.google.com/d/msgid/beagleboard/25541a5f-3b5c-4a5d-92fe-3b70bfd8cb48%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORq5d-yB4PK_tXcE3%2BpcCK2gnPLoKU%2Bp%2BPbn-20wvZ2%3Dow%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
