You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
602 B
C
31 lines
602 B
C
#include "SWM221.h"
|
|
|
|
|
|
int main(void)
|
|
{
|
|
SystemInit();
|
|
|
|
GPIO_Init(GPIOA, PIN5, 1, 0, 0, 0); //输出， 接LED
|
|
|
|
SYS->PVDCR = (1 << SYS_PVDCR_EN_Pos) |
|
|
(1 << SYS_PVDCR_IE_Pos) |
|
|
(4 << SYS_PVDCR_LVL_Pos); //电源电压低于 3.7v 时产生中断
|
|
NVIC_EnableIRQ(GPIOA3_GPIOC3_PVD_IRQn);
|
|
|
|
SYS->LVRCR = (1 << SYS_LVRCR_EN_Pos) |
|
|
(1 << SYS_LVRCR_LVL_Pos) | //电源电压低于 2.0v 时复位芯片
|
|
(1 << SYS_LVRCR_WEN_Pos);
|
|
|
|
while(1==1)
|
|
{
|
|
GPIO_ClrBit(GPIOA, PIN5);
|
|
}
|
|
}
|
|
|
|
void GPIOA3_GPIOC3_PVD_Handler(void)
|
|
{
|
|
SYS->PVDSR = (1 << SYS_PVDSR_IF_Pos); //清除中断标志
|
|
|
|
GPIO_SetBit(GPIOA, PIN5);
|
|
}
|