经常在运行过程中有这个错误.
MSP430: Trouble Reading Memory Block at 0x23fc on Page 0 of Length 0x2: Could not determine device state 如果发生,在程序第一句就会发生
MSP430: Failed Software Reset: Could not read Enhanced Emulation Module register 在PMM设置后发生
MSP430: Trouble Reading Memory Block at 0x23fc on Page 0 of Length 0x2: No error 不设置PMM的话,直接配置时候会发生
MSP430: Trouble Reading Memory Block at 0xf3ffe on Page 0 of Length 0x95: Invalid parameter(s) 不设置PMM,直接设置也可能发生
配置外部32.768khz rtc时钟,必复位MCU.
TARGET:MSP430F6721
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/*
* main.c
*/
int main(void) {
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer
PJDIR |= BIT0 | BIT1 | BIT3;
PJSEL |= BIT0 | BIT1 | BIT3;
//
// PMMCTL0_H = PMMPW_H;
// SVSMHCTL = SVSHE + SVSHRVL0 * PMMCOREV_3 + SVMHE + SVSMHRRL0 * PMMCOREV_3;
// SVSMLCTL = SVSLE + SVMLE + SVSMLRRL0 * PMMCOREV_3;
// while ((PMMIFG & SVSMLDLYIFG) == 0);
// PMMIFG &= ~(SVMLVLRIFG + SVMLIFG);
// PMMCTL0_L = PMMCOREV0 * PMMCOREV_3;
// if ((PMMIFG & SVMLIFG))
// while ((PMMIFG & SVMLVLRIFG) == 0);
// SVSMLCTL = SVSLE + SVSLRVL0 * PMMCOREV_3 + SVMLE + SVSMLRRL0 * PMMCOREV_3;
// PMMCTL0_H = 0x00;
// DCO = 31 MOD = 0
UCSCTL0_H = 31;
UCSCTL1_L = DCORSEL_7;
UCSCTL4 = SELA__VLOCLK | SELS__DCOCLK | SELM__DCOCLK;
UCSCTL5 = DIVA__32 | DIVS__8 | DIVM__1;
UCSCTL6 &= ~(XT1OFF);
UCSCTL6 |= XCAP_3;
//
// do
// {
// UCSCTL7 &= ~(XT2OFFG | XT1LFOFFG | DCOFFG);
// SFRIFG1 &= ~OFIFG;
// } while (SFRIFG1 & OFIFG);
_nop();
while(1){
}
}
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