主函数是空的,放了一个wait(); 功耗有40mA,现在想降低功耗,想让板子空闲时间进入停止模式,在主函数里放一个enter_stop();
void enter_stop(void)
{
/* Set the LPLLSM field to 0b000 for normal STOP mode - Need to retain state of LPWUI bit 8 */
MC_PMCTRL = MC_PMCTRL_LPLLSM(0); // set LPLLSM = 0b000
stop();
}