pstorage and app_timer

RE: pstorage and app_timer

John — Wed, 22 Jun 2016 13:52:49 GMT

Thats great. Glad you got it working. Can you mark the answer as accepted?

RE: pstorage and app_timer

samo — Wed, 22 Jun 2016 07:14:01 GMT

According to recommendation from John DeWitt side I used scheduler for writing in flash. Here is my code which work fine. Thanks for help John DeWitt and Dave_couling.

void experimental_scheduler_event_handler(void *p_event_data, uint16_t event_size)
{
	uint8_t err_code;
	uint8_t dest_data_0[4];	
	  
	uint32_t err_codee;
	
	uint8_t      source_data[4] = {0x25, 0x00, 0x00, 0x00};		 
		
	pstorage_wait_handle = block_0_handle.block_id;            //Specify which pstorage handle to wait for
	pstorage_wait_flag = 1; 	
		
	err_codee=pstorage_update(&block_0_handle, source_data,4,0);     //Write to flash, only one block is allowed for each pstorage_store command
	if(err_codee != NRF_SUCCESS)
	{
			
	}		
	
	while(pstorage_wait_flag)
	{

		 power_manage();
		
	}
	

	pstorage_load(dest_data_0, &block_0_handle, 4, 0);	    

	printf("value %d\n", dest_data_0[0]);
	
		
}



static void experimental_timer_handler(void *p_context)
{
	// here I will put some other tasks
  app_sched_event_put(NULL, 0, experimental_scheduler_event_handler);	
}

RE: pstorage and app_timer

Dave_couling — Tue, 21 Jun 2016 21:19:04 GMT

Try adding app_sched_execute(); into your while loop.

RE: pstorage and app_timer

samo — Tue, 21 Jun 2016 21:09:57 GMT

The following declaration is used: `static volatile uint8_t pstorage_wait_flag = 0, but I get the same problem.

RE: pstorage and app_timer

John — Tue, 21 Jun 2016 17:25:56 GMT

Your timer handler is probably executing in an interrupt context and blocking the call of your callback handler. Rather than waiting in the timer handler, either set a flag to trigger the wait loop in you main loop. Alternatively Nordic provides a scheduler as well that lets you trigger things in an interrupt that later get handled in your main context.

RE: pstorage and app_timer

Dave_couling — Tue, 21 Jun 2016 17:19:09 GMT

Did you declare pstorage_wait_flag as a volatile? This is required when you have a loop variable which may be accessed from a different point in memory (ISR) to assure logically everything runs smoothly.