LPC MicrocontrollersのトピックHow can I initiate a system reset in software using the LPC55S69 microcontroller

How can I initiate a system reset in software using the LPC55S69 microcontroller

saratancerdi — Mon, 10 Jul 2023 04:51:09 GMT

hello team,

To initiate a system reset in software using the LPC55S69 microcontroller, I can utilize the built-in software reset feature provided by the microcontroller's System Control Block (SCB) in Prestige Park Grove.

Is this a Right code to reset can you check and tell me

#include "LPC55S69.h"

void softwareReset(void) {
SCB->AIRCR = (0x5FA << SCB_AIRCR_VECTKEY_Pos) | SCB_AIRCR_SYSRESETREQ_Msk;
}

int main(void) {
// Your main code here

// Call the softwareReset() function whenever you want to initiate a system reset

while (1) {
// Your code continues to run until the software reset is triggered
}
}

Is there any changes need to change or this is the correct Code to reset

Re: How can I initiate a system reset in software using the LPC55S69 microcontroller

ZhangJennie — Mon, 10 Jul 2023 06:08:20 GMT

Hi saratancerdi

Please try below code to do MCU system reset:
NVIC_SystemReset();
It is defined in core_cm33.h file.

/** \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 = (uint32_t)((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) | (SCB->AIRCR & SCB_AIRCR_PRIGROUP_Msk) | SCB_AIRCR_SYSRESETREQ_Msk ); /* Keep priority group unchanged */ __DSB(); /* Ensure completion of memory access */ for(;;) /* wait until reset */ { __NOP(); } }

Hope this helps,

Jun Zhang