If delay is inserted after data transmission by SPI, it transits to default_handler

[Kaito]

Hi!

I am planning to port SPI sending and receiving functions to the sample code of ble_app_uart of SDK 14.0.0.

The transplant was finish, but when I am debugging,if I add a delay after sending data with SPI while debugging, it will transition to Default_handler.

The code running SPI and UART worked fine without problems.

Is it impossible to put a delay in ble's sample code?

best regards!!

void SPITxCommand(unsigned char Data)
{
nrf_gpio_pin_clear(22); //CS pin low
nrf_drv_spi_transfer(&spi, &Data, 1, NULL, NULL);
//nrf_delay_us(50);
nrf_delay_us(100); //error component
}

 

[awneil]

crashed the SoftDevice?

[Kaito]

thank you for your reply!

Since I want to set the register of the sensor on the slave side, I have to send a command for register setting.

For that reason, I describe the processing in the main sentence.

Since this process is written at the beginning of the main sentence, I think that there is no influence on the soft device.

If soft-device is to be affected, how should it be avoided?

 best regards!

int main(void)
{
    uint32_t err_code;
    bool     erase_bonds;

    // Initialize.
    err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);

    uart_init();
		spi_init();
		InitADS119x();
		nrf_delay_us(200);			//4tclock
		SPITxCommand(0x11);
		nrf_delay_us(200);  //error component
		ADS1x9x_Reg_Init();		//ads register initialization
		ADS119x_Enable_start();
		SPITxCommand(0x1a);  //Channel Offset Calibration
		SPITxCommand(0x10);  //0x10 = RDATAC(Read Data Command)(Enable Read Data Continuous mode)
		nrf_delay_us(8);
    log_init();

    buttons_leds_init(&erase_bonds);
    ble_stack_init();
    gap_params_init();
    gatt_init();
    services_init();
    advertising_init();
    conn_params_init();
		
    printf("\r\nUART Start!");
    NRF_LOG_INFO("UART Start!");
    err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
    APP_ERROR_CHECK(err_code);

    // Enter main loop.
    for (;;)
    {
			if(0 == nrf_gpio_pin_read(30)){
				SPITxDummy(0x00); //Dummy_Data LOFFSTAT
				SPITxDummy1(0x00); //Dummy_Data CH1
				SPITxDummy(0x00); //Dummy_Data CH1
			}
        power_manage();
    }
}