Pstorage and NUS not working together

[RPDben]

Hi,

I have a project that uses PStorage and the Nordic UART Service. PStorage is used to store a variable that is updated by the device, irrespective of the Bluetooth, and needs to be sent over the NUS when requested. Without using PStorage, the application works perfectly. However, the variables are lost on reset which is not ideal.

The steps taken to reproduce the issue are as follows:

1. Initialise PStorage
2. Initialise BLE (Device Manager is initialised here as well. PStorage is NOT initialised again)
3. Initialise Peripherals + Register PStorage
4. Connect to Device via BLE

After connecting to the device, the device will respond to one or 2 commands that do not utilise the PStorage before freezing. On freezing, the only way to start the code again is to restart the device.

In the debugger, app_error_handler is never called and the wdt never times out. However, the device is unresponsive.

Any help would be much appreciated. I am using SDK10, SD8.0.0 on the nRF51822.

Thanks,

EDIT 1:

Attached are my header and C file for the pstorage functions.

pstorage_custom.c

pstorage_custom.h

EDIT 2:

Please find attached an example project that proves the incorrect functionality. The while loop at the end of the pstorage_custom_init() function never ends.

Pstorage-Issues.zip

[RK]

Devices don't freeze - they are somewhere doing something. If you hit break in the debugger, where is it and what is it doing? If it's not the app_error_handler(), is it the hardfault handler?

[RPDben]

Sorry, I guess "Appears to Freeze" would have been a better term. Whenever I pause the debugger during the issue it appears to be feeding the watchdog. While waiting for the pstorage functions to finish I feed the watchdog to avoid the device resetting as below. I believe I must be stuck in one of these while loops. However, the code should not be touching pstorage at this point so I am slightly confused as to why the code is here.

pstorage_wait_handle = base_handle.block_id;
	pstorage_wait_flag = 1;
	
	// Request clearing of all blocks in the module.
	retval = pstorage_clear(&base_handle, 4 * 16);

	if (retval == NRF_SUCCESS)
	{
			while(pstorage_wait_flag) { nrf_drv_wdt_feed(); }
	}

[Petter Myhre]

I think you should upload some more code, maybe even your complete project?

[RPDben]

Hi Petter, I have updated the question with my files

[Petter Myhre]

So you are not calling pstorage_custom_read(), pstorage_custom_clear() or pstorage_custom_update() but you still end up in one of the while loops?