SOFTDEVICE: INVALID MEMORY ACCESS when I used SPIM

[Taylor]

Hi,

I'm using SDK17.0.2 example(ble_uart) on nRF52832.When I enabled SPIM to drive sensor,and send data, RTT Viewer logging SOFTDEVICE: INVALID MEMORY ACCESS.

BTW I have used RNG before seng data.

SD version:S132

Even I don't add any peripheral code, there still have error SOFTDEVICE: INVALID MEMORY ACCESS.

int main(void)
{
    bool erase_bonds;
		uint8_t random_value = 0;
    // Initialize.
    uart_init();
    log_init();
    timers_init();
    buttons_leds_init(&erase_bonds);
    power_management_init();
    ble_stack_init();
    gap_params_init();
    gatt_init();
    services_init();
    advertising_init();
    conn_params_init();

    // Start execution.
    printf("\r\nUART started.\r\n");
    NRF_LOG_INFO("Debug logging for UART over RTT started.");
    advertising_start();
		
		NRF_RNG->CONFIG=1;
		NRF_RNG->TASKS_START=1;
		NRF_RNG->EVENTS_VALRDY=0;
		while(NRF_RNG->EVENTS_VALRDY==0){}
		random_value=NRF_RNG->VALUE;
		NRF_RNG->TASKS_STOP=1;
		NRF_RNG->INTENCLR=0;               
		NRF_RNG->CONFIG=0; 
    // Enter main loop.
    for (;;)
    {
        idle_state_handle();
    }
}

[Karl Ylvisaker]

Hello,

The RNG peripheral is restricted when the SoftDevice is present, which means that it can not be accessed directly like you attempt in your code, this will cause the SoftDevice to assert.

Best regards,
Karl