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Hardware reset

lpc1768 board or the MCB1700

does anybody know how to switch bins files using the hardware reset route, so when I press the reset button it will switch bins.

I know for software it could be something like this perharps

>
int main (void)
{
for (;;)
If

extern "C" void lpc1768_reset();

flash.write = binfile1

else

flash.write = binfile2

endif


}

<

thanks,

thomas

Parents

0 thomas clad over 13 years ago in reply to ImPer Westermark

would any of you know how to detect when the mbed's hardware reset button has been pushed, so I can then use that to trigger a copy rename and delete of my bin file.

I have the code for a software reset and plan to use an external push button to that if I can not figure out how to do above.

I have a blue reset button on my MCB1700 as well I don't mind using that one if you prefer

>
NVIC_SystemReset()

#define NVIC_SYSRESETREQ            2         /*!< System Reset Request         */
#define NVIC_AIRCR_VECTKEY    (0x5FA << 16)   /*!< AIRCR Key for write access   */

static __INLINE void NVIC_SystemReset(void)
{
  SCB->AIRCR  = (NVIC_AIRCR_VECTKEY | (1<<NVIC_SYSRESETREQ));                          /* Keep priority group unchanged */
  asm("DSB");
  while(1);                                                                            /* wait until reset */
}
<

>

/**
 * @brief  Initiate a system reset request.
 *
 * Initiate a system reset request to reset the MCU
 */
static __INLINE void NVIC_SystemReset(void)
{
  SCB->AIRCR  = ((0x5FA << SCB_AIRCR_VECTKEY_Pos)      |
                 (SCB->AIRCR & SCB_AIRCR_PRIGROUP_Msk) |
                 SCB_AIRCR_SYSRESETREQ_Msk);                   /* Keep priority group unchanged */
  __DSB();                                                     /* Ensure completion of memory access */
  while(1);                                                    /* wait until reset */
}

/*@}*/ /* end of group CMSIS_CM3_Core_FunctionInterface */

<

Reply

0 thomas clad over 13 years ago in reply to ImPer Westermark

would any of you know how to detect when the mbed's hardware reset button has been pushed, so I can then use that to trigger a copy rename and delete of my bin file.

I have the code for a software reset and plan to use an external push button to that if I can not figure out how to do above.

I have a blue reset button on my MCB1700 as well I don't mind using that one if you prefer

>
NVIC_SystemReset()

#define NVIC_SYSRESETREQ            2         /*!< System Reset Request         */
#define NVIC_AIRCR_VECTKEY    (0x5FA << 16)   /*!< AIRCR Key for write access   */

static __INLINE void NVIC_SystemReset(void)
{
  SCB->AIRCR  = (NVIC_AIRCR_VECTKEY | (1<<NVIC_SYSRESETREQ));                          /* Keep priority group unchanged */
  asm("DSB");
  while(1);                                                                            /* wait until reset */
}
<

>

/**
 * @brief  Initiate a system reset request.
 *
 * Initiate a system reset request to reset the MCU
 */
static __INLINE void NVIC_SystemReset(void)
{
  SCB->AIRCR  = ((0x5FA << SCB_AIRCR_VECTKEY_Pos)      |
                 (SCB->AIRCR & SCB_AIRCR_PRIGROUP_Msk) |
                 SCB_AIRCR_SYSRESETREQ_Msk);                   /* Keep priority group unchanged */
  __DSB();                                                     /* Ensure completion of memory access */
  while(1);                                                    /* wait until reset */
}

/*@}*/ /* end of group CMSIS_CM3_Core_FunctionInterface */

<

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