Problem when switching role from peripheral to central on S120

RE: Problem when switching role from peripheral to central on S120

Andreas — Wed, 05 Oct 2016 06:43:19 GMT

Hi RK, thanks for that additional information. Of course you are right. Unfortunately this error codes (with base 0x1000) where not in my scope. So I didn`t know them at that point of time... :-)

RE: Problem when switching role from peripheral to central on S120

RK — Wed, 05 Oct 2016 06:30:49 GMT

The error code told you that by the way. 4097 is 0x1001

#define 	NRF_ERROR_SDM_INCORRECT_INTERRUPT_CONFIGURATION   (NRF_ERROR_SDM_BASE_NUM + 1)

#define 	NRF_ERROR_SDM_BASE_NUM   (0x1000)

regrettably not all error codes in the SDK/softdevice are unique, but I think that one is.

RE: Problem when switching role from peripheral to central on S120

Andreas — Wed, 05 Oct 2016 06:24:39 GMT

Finally got it. There was an error when initialising some timers on another point of the project. For these timers, the wrong interrupt priority was used. This priority was reserved for the softdevice. Changed the interrupt priority and the role switching worked.

RE: Problem when switching role from peripheral to central on S120

Petter Myhre — Wed, 24 Aug 2016 08:40:43 GMT

I don't think so, but I haven't done much testing with switching roles with the S120.

RE: Problem when switching role from peripheral to central on S120

Andreas — Mon, 22 Aug 2016 14:23:59 GMT

Ok, I did a quick test with the more simple ble_app_uart_c example:

ble_stack_init(BLE_GAP_ROLE_PERIPH); sd_softdevice_disable(); ble_stack_init(BLE_GAP_ROLE_CENTRAL); This worked. So there must be a problem with the rest of my application code. I am using SPI, TWI and UART in my final application. Do I have to take care with one of these drivers when disabling the ble stack / switching the role?

RE: Problem when switching role from peripheral to central on S120

Petter Myhre — Mon, 22 Aug 2016 12:48:16 GMT

I tried your code with SDK 8.1.0, with compatible S120 SoftDevice. Seems to be working fine as well. Could you upload a project which reproduces the issue? Have you changed any of the libraries? I just tried this:

err_code = ble_stack_init(BLE_GAP_ROLE_PERIPH);
APP_ERROR_CHECK(err_code);

err_code = sd_softdevice_disable();
APP_ERROR_CHECK(err_code);

err_code = ble_stack_init(BLE_GAP_ROLE_CENTRAL);
APP_ERROR_CHECK(err_code);

RE: Problem when switching role from peripheral to central on S120

Andreas — Mon, 22 Aug 2016 12:00:07 GMT

Hello, thanks for testing my code. I am working with the SDK 8.1.0 and the integrated sofdevice version. Do I have to switch the SDK version!? I think this would be a bigger job for me to do because it is an existing project.

RE: Problem when switching role from peripheral to central on S120

Petter Myhre — Mon, 22 Aug 2016 11:38:24 GMT

Ok. I tried your code. Seems to be working fine here. I tested with S120 v2.1.0 and SDK 10.0.0. Are these the versions you are working with as well? I think you should use softdevice_handler_sd_disable() instead of sd_softdevice_disable() directly, but I don't think that is the cause of your issue.

RE: Problem when switching role from peripheral to central on S120

Andreas — Mon, 22 Aug 2016 10:09:20 GMT

Is it possible, that the error code can not be resolved properly because it is part of a macro? (SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, NULL);)

RE: Problem when switching role from peripheral to central on S120

Andreas — Mon, 22 Aug 2016 09:57:58 GMT

Hello Petter, I have turned off all optimizations. The error is thrown from sd_softdevice_enable(clock_source, softdevice_assertion_handler);. It happens in softdevice_handler_init() (softdevice_handler.c).

RE: Problem when switching role from peripheral to central on S120

Petter Myhre — Mon, 22 Aug 2016 09:11:25 GMT

Have you turned off optimization? Could you try to debug and see from where in softdevice_handler_init() this error is set?

RE: Problem when switching role from peripheral to central on S120

Andreas — Fri, 19 Aug 2016 13:57:53 GMT

Ok, by stepping through the code with the debugger, I can see that the error is thrown from the sd_softdevice_enable(clock_source, softdevice_assertion_handler); function in softdevice_handler.c. I think, because SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, NULL); is a macro, the debugger can not resolve that properly. Nevertheless, for me 4097 is not a valid error code. Are there any other preconditions that have to be setted properly to switch the role?

RE: Problem when switching role from peripheral to central on S120

Petter Myhre — Thu, 18 Aug 2016 11:59:19 GMT

It is not valid. It is returned by softdevice_handler_init()? Have you turned off optimization? Could you try to debug and see from where in softdevice_handler_init() this error is set?