RE: Testing SD fault handlers

Vidar Berg — Mon, 18 Sep 2023 09:13:52 GMT

Hello,

You can use the functions below to trigger these faults.

#include "nrf_delay.h"

// Must be called when the Softdevice is active handling protocol events. E.g. after starting advertising. 
static void trigger_sd_assert(void)
{
    /*  Trigger assert by blocking internal Softdevice interrupts. The SD will assert
     *  when it detects that its real-time requirements have not been met. 
     */ 
    __disable_irq();
    nrf_delay_ms(1000);
    __enable_irq();
}

static void trigger_sd_memacc(void)
{
    /* NRF_FAULT_ID_APP_MEMACC is raised if the application tries to access peripherals or memory (RAM) 
     * reserved to the Softdevice - https://infocenter.nordicsemi.com/topic/sds_s140/SDS/s1xx/sd_resource_reqs/sd_resource_reqs.html 
     */
     
     // Option #1: write to the Softdevice's RAM region
     *(uint32_t *) 0x20001000 = 1;
     // Option #2 Perform a write access to a SoftDevice reserved peripheral.
     NRF_TIMER0->TASKS_START = 1;
}

Best regards,

Vidar