problem with timer interrupts (NRF51822)

RE: problem with timer interrupts (NRF51822)

hristozov — Wed, 19 Feb 2014 18:41:06 GMT

Hi,

changing the start up commands to

file "c:\full\path\to\your\file.out" 
load
mon reset

and removing the checkboxes for loading symbol table and binary file make it work. Thank you!

RE: problem with timer interrupts (NRF51822)

Ole Morten — Wed, 05 Feb 2014 09:58:58 GMT

This is actually most likely just functioning as a workaround for the real problem, that is Eclipse not running the reset handler of the chip properly. Did you take a look at the links I added to my first reply?

RE: problem with timer interrupts (NRF51822)

hristozov — Tue, 04 Feb 2014 18:05:23 GMT

Today I and a colleague of mine performed a few more tests on this issue. It looks like that a calling of sd_softdevice_forward_to_application() function in the init_timers() solves the problem.

RE: problem with timer interrupts (NRF51822)

Ole Morten — Tue, 04 Feb 2014 17:07:22 GMT

I've had a look at this project, compiled it and ran it on a chip, and as far as I can see, it works as expected, and the timer interrupt runs correctly.

This is when running the project from the command line GDB. Have you tried this, or running the project without a debugger?

I've also edited my answer above, giving a few further pointers, in case it is Eclipse that tricks you.

RE: problem with timer interrupts (NRF51822)

hristozov — Fri, 31 Jan 2014 15:35:00 GMT

Hello Ole,

you can find my project in the attachments. I don't use the soft device so far. I only want to test the timer for my application.

best regards, Stefan

Led.rar

RE: problem with timer interrupts (NRF51822)

Ole Morten — Fri, 31 Jan 2014 15:07:19 GMT

Your code looks correct, but could it be that the softdevice is enabled at the time you try this? If so, you'll get a HardFault when accessing the CLOCK peripheral, since this is blocked by the softdevice, and this may make Eclipse confused.

If this is not the case, can you please edit your question, and supply your complete project, with makefiles and linker scripts, so I can give it a go?

Edit: I'd also recommend you to take a look at this and this question for further details on potential problems with using Eclipse for debugging. It seems that Eclipse some times are a little problematic to get working reliably...