求助F5529用PMM测VCC电压
根据手册，F5xx的PMM具有电压检测的功能，我写了一个代码，可以实现在Vcc低于2.5v的时候发生中断；但是合格电压不可调。麻烦各位大虾指点一下#include "msp430f5529.h"
void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
P1DIR = BIT0;
P8DIR = BIT0 + BIT1 + BIT2;
P1OUT = 0;
P8OUT = 0;
PMMCTL0_H = 0xA5; //开PMM电源管理
PMMIFG = 0;
PMMRIE = SVMHIE;
SVSMHCTL = SVMHE + SVSMHRRL_6; //配置SVML电压
PMMCTL0_H = 0X00; //锁存配置
while(1)
{
for(unsigned int i=0;i<60000;i++);
P1OUT ^= BIT0;
}
}
#pragma vector=SYSNMI_VECTOR
__interrupt void SYSNMI_ISR(void)
{
P8OUT = BIT1;
PMMIFG &= ~SVMHIFG;
}
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