libuarte and sdcard spi ?

[RixtronixLAB]

Dear Members,

I run 3 devices,

GPS on libuarte1

LCD on SPI2

Sdcard on SPI 1,

I'm using ANT and softdevice 340,

When I run LCD and SDcard outside the main loop, it's working ok,

by the time it's inside the main loop, it crashes with libuarte1,

Code :

									nrf_libuarte_async_config_t nrf_libuarte_async_config1 = {
            .tx_pin     = SER_APP_TX_PIN,
            .rx_pin     = SER_APP_RX_PIN,
            .baudrate   = NRF_UARTE_BAUDRATE_9600, //originally 28 Sept 2021
					  //.baudrate   = NRF_UARTE_BAUDRATE_38400,
            .parity     = NRF_UARTE_PARITY_EXCLUDED,
            .hwfc       = NRF_UARTE_HWFC_DISABLED,
            .timeout_us = 1000,
            .int_prio   = APP_IRQ_PRIORITY_LOW
			      
    };
		err_code=nrf_libuarte_async_init(&libuarte1, &nrf_libuarte_async_config1, uart_event_handler1, (void *)&libuarte1);
 /******************SDCARD  Sequence****************/   
 
			 
						NRF_SPI2->ENABLE = 0; //ILI9341 off
		          nrf_delay_ms(100);
			        NRF_SPI1->ENABLE = 1; //SDcard on
								
								fatfs_example();
								nrf_delay_ms(100);
								
		  /******************SDCARD  Sequence****************/   					  					
            printf("\rRixtronix LAB GPS Query.... \r\n");		
						 nrf_delay_ms(2000);
						GPSNeo_Process();

Debug :

nfo> app: 
                                                                   

isting directory: /
                                                          

   9550  RIXTRO.TXT<info> app: Writing to file RIXTRO.TXT...
                 

nfo> app: 50 bytes written.
                                                  

nfo> app: LOOP Rixtronix LAB.


rror> app: SOFTDEVICE: ASSERTION FAILED
     

                                                


                                                                             

nfo> app: Support us by subscribing,thanks...
                                


                                                                             

nfo> app: Initializing disk 0 (SDC)...
                                       

nfo> app: Capacity: 30436 MB
                                                 

nfo> app: Mounting volume...
                                                 
<error> app: ERROR 0 [NRF_SUCCESS] at ..\..\..\..\..\..\..\..\components\librari

\libuarte\nrf_libuarte_async.c:230
                                           

 at: 0x0004877B
                                                              

rror> app: End of error report

Any ideas on resolving it ? thanks

[RixtronixLAB]

Hi, Jared 

on uart1 event handler I put:

case NRF_LIBUARTE_ASYNC_EVT_RX_DATA:

GPS_CallBack();

======

Should I put only a flag for doing GPS_Call back on "case NRF_LIBUARTE_ASYNC_EVT_RX_DATA:" ?

Which part of the code is doing the interrupt service ?

Event handler = interrupt service routine ?

Thanks

[Jared]

Hi,

The uart_event_handler will be called by the libuarte driver on a interrupt. We do not recommend spending much time in interrupt context as it can block other tasks, setting a flag and running the GPS_CallBack() task in main context is indeed much better. 

Also, Could you provide an example that shows how it works versus when it doesn't work?

regards

Jared 

[RixtronixLAB]

So :

 case NRF_LIBUARTE_ASYNC_EVT_RX_DATA:
                  // GPS_CallBack(); //originally on 1 Dec 21 Rixtronix LAB
                  GPS_UART1_Flag = 1;

in main()

/*************LIBUARTE FLAG =1, callback Rixtronix LAB 2 Dec 21****/
        if (GPS_UART1_Flag ==1)
				{
					GPS_CallBack();
				}	
				/*************LIBUARTE FLAG =1, callback Rixtronix LAB 2 Dec 21****/	

I'm thinking it's the cause of system reset, because it crashed on libuarte ?

<error> app: ERROR 0 [NRF_SUCCESS] at ..\..\..\..\..\..\..\..\components\librari

\libuarte\nrf_libuarte_async.c:230

it can be compiled, but I haven't uploaded yet, I'll keep posted...

Thanks