通过JTAG调试工具调试配置时钟,发现清除标志位时
do
{
UCSCTL7 &= ~(XT2OFFG + XT1LFOFFG + DCOFFG);
// Clear XT2,XT1,DCO fault flags
SFRIFG1 &= ~OFIFG; // Clear fault flags
}while (SFRIFG1&OFIFG);
在这个循环中跳不出来,32K的晶振也不起振,配置的另一个4M的晶振能够启动
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