nRF52 stuck on Convolution Function

RE: nRF52 stuck on Convolution Function

RK — Thu, 25 Feb 2016 00:27:12 GMT

What is the state of all the registers when the processor is stopped. It would be useful to see the stack pointer, the control and status flags, all of them, to see if there's an error. How about a backtrace, is there one?

RE: nRF52 stuck on Convolution Function

Muhammad Ahmad Shah — Wed, 24 Feb 2016 21:18:28 GMT

I added the following line right after the realloc command used in the AddAtSpecificIndex function above: if(InputArray->array==NULL){ " PRINT SOMETHING VIA UART "} However, I don't get any such indication.

RE: nRF52 stuck on Convolution Function

Einar Thorsrud — Wed, 24 Feb 2016 13:10:26 GMT

You should always check the return value of realloc(). If unsuccessful, it will return NULL. It would be interesting to know if this is what happens in this case or not.

RE: nRF52 stuck on Convolution Function

Muhammad Ahmad Shah — Wed, 24 Feb 2016 12:54:08 GMT

The AddAtSpecificIndex command is made to make an Array act like a Matlab Array. So you can change whatever value at whatever index you want.

The result array initially holds one Initial Value at the Zeroeth Index. The AddAtSpecificIndex function handles the re-allocation of memory for adding values at whatever index the user wants, as is now visible in the updated Question above.

RE: nRF52 stuck on Convolution Function

Einar Thorsrud — Wed, 24 Feb 2016 12:46:47 GMT

Your result array can only hold 1 float (ArrayPtr->array = (float *)malloc(1 * sizeof(float));). Is that intentional?

Also, what is the implementation of AddAtSpecificIndex()?

RE: nRF52 stuck on Convolution Function

Wojtek — Tue, 23 Feb 2016 23:10:09 GMT

So that probably is something else. Unfortunately I am not able to help

RE: nRF52 stuck on Convolution Function

Muhammad Ahmad Shah — Tue, 23 Feb 2016 22:53:04 GMT

I changed the Heap size in gcc_startup_nrf52.s from 8192 to 12288 and reduced the Stack size to 4096 but nothing changes. It still gets stuck at the same iteration of the for loop. Even if I increase the Heap more, I still get stuck at the same iteration.

RE: nRF52 stuck on Convolution Function

Wojtek — Tue, 23 Feb 2016 22:51:46 GMT

Increase/decrease heap/stack and check if u get more/less successfull calls

RE: nRF52 stuck on Convolution Function

Muhammad Ahmad Shah — Tue, 23 Feb 2016 22:47:53 GMT

Is there a way to check that ? And if I am overflowing the heap or stack, what's the best possible solution that I may have ??

RE: nRF52 stuck on Convolution Function

Wojtek — Tue, 23 Feb 2016 22:41:19 GMT

I bet you overflow the heap. Or stack.