Thanks Jason, There is a hardware solution to my problem in a form of a tiny logic 08 (AND gate). The PWM is connected to one input and an extra ENABLE signal from GPIO is connected to another input. On the output the resulting gated PWM signal will appear when the ENABLE signal goes high from the application. The solution however is non-elegant and can be avoided if I had a better knowledge of the software - in this case a PWM driver and it's interaction with a device tree overlay. The initial values of pins on boot is a thing to be aware of in any system. Thinking that there are people using PWM on BBB, including the designers of PWM capes and they are facing the same issue, there was my hope of finding a software solution. And yes, I did a very extensive search beforehand. And I am grateful and appreciated for the help received, and if possible I do contribute back to community within my limits.
Cheers Jan On Tuesday, November 25, 2014 8:28:08 PM UTC+11, Jason Lange wrote: > > > On Mon, Nov 24, 2014 at 11:05 PM, <janszyma...@gmail.com <javascript:>> > wrote: > > Hi, >> >> I have still unresolved issue (no answer here for how to make pwm_P8_13 >> low on boot? ) and therefore >> trying to figure out if my question is: >> - too easy >> - too difficult >> - not interesting enough >> - other? >> >> As I see there is generally a number of unanswered questions, would it be >> possible for the moderator to give an indication in a simple style, >> something like: "too easy, google it yourself" or whatever, to avoid >> frustration. >> >> Jan >> > > > Is there a moderator? I don't know. > > But for myself, your question is both too difficult (I don't know the > answer) and not interesting enough (It isn't a problem that I need to solve > for myself). Everybody here is going to have a different response, so > having a moderator decide is probably a bit ham fisted. I can imagine an > external hardware solution because I do circuits, but it'd be more elegant > if someone helped you find a proper on-board software solution. If you > find a solution on your own please post it. If you get desperate enough to > start soldering email me and I'll try to help. > > Cheers. > > > -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
