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CC2340R5: reset function

Part Number: CC2340R5

 NVIC_SystemReset(); is a soft reset or hard reset?

  • Hi bijendra,

    Writing 1 to the SCB:AIRCR:SYSRESETREQ bit causes the SYSRESETREQ signal to the outer system to be asserted to request a reset. The intention is to force a large system reset of all major components except for debug. The C_HALT bit in the DHCSR is cleared as a result of the system reset requested. The debugger does not lose contact with the device.  Thus it is a soft reset.

    /**
      \brief   System Reset
      \details Initiates a system reset request to reset the MCU.
     */
    __NO_RETURN __STATIC_INLINE void __NVIC_SystemReset(void)
    {
      __DSB();                                                          /* Ensure all outstanding memory accesses included
                                                                           buffered write are completed before reset */
      SCB->AIRCR  = ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
                     SCB_AIRCR_SYSRESETREQ_Msk);
      __DSB();                                                          /* Ensure completion of memory access */
    
      for(;;)                                                           /* wait until reset */
      {
        __NOP();
      }
    }

    Regards,
    Ryan