Hello Santiago,
during the short interruptions on main voltage the MCU
restart correctly, but after 5-10 click the system will be stopped for ever. To
restart it I shut down the supply or give a manual reset on the pin.
It’s impossible to give short interruptions on main
voltage in debug mode.
void __init_hardware(void)
{
/*** !!! Here you can place your own code before PE initialization using property "User code before PE initialization" on the build options tab. !!! ***/
/*** ### MK20DX128VLH5 "Cpu" init code ... ***/
/*** PE initialization code after reset ***/
SCB_VTOR = (uint32_t)(&__vect_table); /* Set the interrupt vector table position */
/* Disable the WDOG module */
/* WDOG_UNLOCK: WDOGUNLOCK=0xC520 */
WDOG_UNLOCK = WDOG_UNLOCK_WDOGUNLOCK(0xC520); /* Key 1 */
/* WDOG_UNLOCK: WDOGUNLOCK=0xD928 */
WDOG_UNLOCK = WDOG_UNLOCK_WDOGUNLOCK(0xD928); /* Key 2 */
/* WDOG_STCTRLH: ??=0,DISTESTWDOG=0,BYTESEL=0,TESTSEL=0,TESTWDOG=0,??=0,??=1,WAITEN=1,STOPEN=1,DBGEN=0,ALLOWUPDATE=1,WINEN=0,IRQRSTEN=0,CLKSRC=1,WDOGEN=0 */
WDOG_STCTRLH = WDOG_STCTRLH_WAITEN_MASK |
WDOG_STCTRLH_STOPEN_MASK |
WDOG_STCTRLH_ALLOWUPDATE_MASK |
WDOG_STCTRLH_CLKSRC_MASK |
0x0100U;
/* System clock initialization */
/* SIM_SCGC5: PORTE=1,PORTD=1,PORTC=1,PORTB=1,PORTA=1 */
SIM_SCGC5 |= SIM_SCGC5_PORTE_MASK |
SIM_SCGC5_PORTD_MASK |
SIM_SCGC5_PORTC_MASK |
SIM_SCGC5_PORTB_MASK |
SIM_SCGC5_PORTA_MASK; /* Enable clock gate for ports to enable pin routing */
/* SIM_SCGC5: LPTIMER=1 */
SIM_SCGC5 |= SIM_SCGC5_LPTIMER_MASK;
if ( *((uint8_t*) 0x03FFU) != 0xFFU) {
MCG_C3 = *((uint8_t*) 0x03FFU);
MCG_C4 = (MCG_C4 & 0xFEU) | ((*((uint8_t*) 0x03FEU)) & 0x01U);
}
/* SIM_CLKDIV1: OUTDIV1=0,OUTDIV2=0,??=0,??=0,??=0,??=0,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV4(0x01); /* Update system prescalers */
/* SIM_SOPT2: PLLFLLSEL=0 */
SIM_SOPT2 &= (uint32_t)~(uint32_t)(SIM_SOPT2_PLLFLLSEL_MASK); /* Select FLL as a clock source for various peripherals */
/* SIM_SOPT1: OSC32KSEL=0 */
SIM_SOPT1 &= (uint32_t)~(uint32_t)(SIM_SOPT1_OSC32KSEL(0x03)); /* System oscillator drives 32 kHz clock for various peripherals */
/* Switch to FEI Mode */
/* MCG_C1: CLKS=0,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */
MCG_C1 = (MCG_C1_IREFS_MASK | MCG_C1_IRCLKEN_MASK);
/* MCG_C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=0,LP=0,IRCS=0 */
MCG_C2 = 0x00U;
/* MCG_C4: DMX32=1,DRST_DRS=1 */
MCG_C4 = (uint8_t)((MCG_C4 & (uint8_t)~(uint8_t)(
MCG_C4_DRST_DRS(0x02)
)) | (uint8_t)(
MCG_C4_DMX32_MASK |
MCG_C4_DRST_DRS(0x01)
));
/* OSC0_CR: ERCLKEN=1,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
OSC0_CR = OSC_CR_ERCLKEN_MASK;
/* MCG_C7: OSCSEL=0 */
MCG_C7 &= (uint8_t)~(uint8_t)(MCG_C7_OSCSEL_MASK);
/* MCG_C5: ??=0,PLLCLKEN0=0,PLLSTEN0=0,PRDIV0=0 */
MCG_C5 = 0x00U;
/* MCG_C6: LOLIE0=0,PLLS=0,CME0=0,VDIV0=0 */
MCG_C6 = 0x00U;
while((MCG_S & MCG_S_IREFST_MASK) == 0x00U) { /* Check that the source of the FLL reference clock is the internal reference clock. */
}
while((MCG_S & 0x0CU) != 0x00U) { /* Wait until output of the FLL is selected */
}
/*** End of PE initialization code after reset ***/
/*** !!! Here you can place your own code after PE initialization using property "User code after PE initialization" on the build options tab. !!! ***/
}
Regards, Alvaro
