blinky_freertos example adds Serial UART but nrf_serial_init() fail

[Tim_lai]

SDK version: nRF5_SDK_15.3.0

Platform: nRF52840 DK

SoftDevice: s140

--

Hi All,

I use blinky_freertos example to add nrf_serial lib to send/receive AT command by UART port.

It's work when I press "build and run" on SES IDE, 

bit if I switch the power key on nRF52840DK, it's didn't work.

I try to trace to find that nrf_serial_init() call nrf_queue_reset() and the nrf_queue_reset() can not return.

I don't know why.

NRF_SERIAL_UART_DEF(serial1_uarte, 1);

NRF_SERIAL_DRV_UART_CONFIG_DEF(m_uarte1_drv_config,
                      ARDUINO_0_PIN, ARDUINO_1_PIN,
                      RTS_PIN_NUMBER, CTS_PIN_NUMBER,
                      NRF_UART_HWFC_DISABLED, NRF_UART_PARITY_EXCLUDED,
                      NRF_UART_BAUDRATE_115200,
                      UART_DEFAULT_CONFIG_IRQ_PRIORITY);

NRF_SERIAL_CONFIG_DEF(serial1_config, NRF_SERIAL_MODE_DMA,
                      &serial1_queues, &serial1_buffs, NULL, sleep_handler);

static void uart_init(void)
{
    uint32_t err_code;
    const app_uart_comm_params_t comm_params =
    {
          RX_PIN_NUMBER,
          TX_PIN_NUMBER,
          RTS_PIN_NUMBER,
          CTS_PIN_NUMBER,
          UART_HWFC,
          false,
#if defined (UART_PRESENT)
          NRF_UART_BAUDRATE_115200
#else
          NRF_UARTE_BAUDRATE_115200
#endif
      };

      APP_UART_FIFO_INIT(&comm_params,
                         UART_RX_BUF_SIZE,
                         UART_TX_BUF_SIZE,
                         uart_error_handle,
                         APP_IRQ_PRIORITY_LOWEST,
                         err_code);

    APP_ERROR_CHECK(err_code);
}


int main(void)
{
    ret_code_t err_code;
    ret_code_t ret;
    uart_init();

    ret = nrf_drv_clock_init();
    APP_ERROR_CHECK(ret);
    ret = nrf_drv_power_init(NULL);
    APP_ERROR_CHECK(ret);
    

    nrf_drv_clock_lfclk_request(NULL);
    ret = app_timer_init();
    APP_ERROR_CHECK(ret);

    bsp_board_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS);
 
    ret = nrf_serial_init(&serial1_uarte, &m_uarte1_drv_config, &serial1_config);
    APP_ERROR_CHECK(ret);

    xMutex = xSemaphoreCreateMutex();
 
    at_setting(_AT, 3000);
    at_setting(_QICSGP, 200);
    at_setting(_QIACT_1, 2000);
    at_setting(_QIACT_IP, 2000);
 
    // MQTT AT Command
    at_setting(_QMTCFG_VER_0, 300);
    at_setting(_QMTOPEN_0, 5000);
    at_setting(_QMTCONN_0, 3000);
 
    if( xMutex != NULL )
    {
      UNUSED_VARIABLE(xTaskCreate(mqtt_sub_task_function, "SUB", configMINIMAL_STACK_SIZE + 200, NULL, 3, &mqtt_sub_task_handle));
      UNUSED_VARIABLE(xTaskCreate(mqtt_pub_task_function, "PUB", configMINIMAL_STACK_SIZE + 200, NULL, 3, &mqtt_pub_task_handle));

      // Activate deep sleep mode 
      SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
      vTaskStartScheduler();
    }
    while (true)
    {
        // FreeRTOS should not be here... FreeRTOS goes back to the start of stack
        // in vTaskStartScheduler function. 
    }
    
}

BTW, this example I use app_timer(RTC1) and FreeRTOS timer(RTC2)

Thanks.

Tim

 

 

 

[Tim_lai]

Thanks for your reply.

In debug mode, it's work. It will be stuck in nrf_queue_reset() of nrf_serial_init() if switch power key on nRF52840 DK.

run "build and run" command to download *.elf successful. and the log shows 

"Programming 0.0 KB of .nrf_queue addresses 20005860 — 20005887" 

and I erase mem and flash hex file by nRF Connect programmer, it shows as below.

is nrf_queue make stuck when I switch power key on DK? 

[Tim_lai]

Hi Nugurr,

I try to include app_timer_freertos.c instead of app_timer.c, and use RTC1.

but when I call nrf_serial_read(): 

int at_setting(char *cmd, uint32_t timeout)
{
 // printf("cmd:%s\r\n", cmd);
    xSemaphoreTake( xMutex, portMAX_DELAY);

    ret_code_t ret;
    int cont = 0;
    char ac[256];
    char c;
    int value;

    memset(ac, 0, sizeof(ac));
    nrf_serial_write(&serial1_uarte, cmd, strlen(cmd), NULL, NRF_SERIAL_MAX_TIMEOUT);
    (void)nrf_serial_flush(&serial1_uarte, 0);
    do
    {   
      ret = nrf_serial_read(&serial1_uarte, &c, sizeof(c), NULL, timeout);
      if (ret != NRF_SUCCESS)
      {
        continue;
      }   
      ac[cont] = c;
      cont++;
    }while(ret == NRF_SUCCESS);

    xSemaphoreGive( xMutex );

    printf("%s\r\n", &ac);

   // xSemaphoreGive( xMutex );

    return value;
}


at_setting(_AT, 3000);

i

In nrf_serial_read() call timeout_setup() to create timer (call app_timer_create())

but the app_timer_create() return errorcode = 8 (Invalid state, operation disallowed in this state)

what kind of setting parameter I loss?

Thanks.

[Susheel Nuguru]

Tim_lai said:

"Programming 0.0 KB of .nrf_queue addresses 20005860 — 20005887" 

 This is not an error, programming 27 bytes of code cannot be showed in a single precision number after decimal. That is it must 0.02KB of code, but since it is only showing single precision after the decimal , it is showing 0.0. That does not mean that it is not programming anything.

The programming with nRF connect is interesting. I have to try that one and will come back to you

[Susheel Nuguru]

You seems to have forgotten to create a serial instance which would create a timer instance for you like below

NRF_SERIAL_UART_DEF(serial_uart, 0);

Please look into the example in SDK\examples\peripheral\serial\main.c to understand how the nrf_serial module is initialized.

[Tim_lai]

Thanks,

I have created an instance of a serial port.

I post the problem to Add FreeRTOS into serial example but nrf_serial_read() read string fail

Thanks,

Tim