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by mm314
Thu Mar 16, 2017 11:50 pm
Forum: Bare metal, Assembly language
Topic: RPI2 Timers and interrupts
Replies: 18
Views: 5599

Re: RPI2 Timers and interrupts

Hi Tiago, Thanks for the response, yes actually I tested it with devmem as an initial step and got it working, however it is becoming a little bit tricky to get the interrupt installed and working, all I get is the "unexpected IRQ trap at vector 00" message o likely I am installing the int...
by mm314
Wed Mar 15, 2017 11:55 pm
Forum: Bare metal, Assembly language
Topic: RPI2 Timers and interrupts
Replies: 18
Views: 5599

Re: RPI2 Timers and interrupts

Hi, I am facing a similar problem, I want to use the local timer (section 4.11 at https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2836/QA7_rev3.4.pdf ) however the request_irq is failing each time I request for the irq (maybe I am using the wrong irq number) and I always got the &q...
by mm314
Sat Mar 11, 2017 4:46 pm
Forum: General discussion
Topic: Using local timer on RP2
Replies: 0
Views: 270

Using local timer on RP2

Hi all, I am trying to use the local time from a kernel driver in the RP2. So far I started playing with the timer registers (section 4.11 at https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2836/QA7_rev3.4.pdf ) using devmem. When I enabled the interrupt and then enabled the timer ...

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