#include "board.h"

#define POWER_OFF_PORT      GPIOE
#define POWER_OFF_PIN       4

#define POWER_IS_OFF()  (POWER_OFF_PORT->IDR & (1 << POWER_OFF_PIN)) == 0
#define POWER_IS_ON()  (POWER_OFF_PORT->IDR & (1 << POWER_OFF_PIN)) != 0

/**
 * 掉电检测的硬件初始化
 * 
 * @author lxz (2019/5/30/周四)
 * 
 * @param void 
 */
void hw_power_off_init(void) {
	RCC->AHBENR |= 1 << (((uint32_t)(POWER_OFF_PORT)-GPIOA_BASE) / 0x400);
	GPIO_Set(POWER_OFF_PORT, 1 << POWER_OFF_PIN,
			 GPIO_MODE_IPU,
			 GPIO_SPEED_2M,
			 GPIO_PUPD_NONE); //PB0,PB1设置
}

/**
 * 电源是否关闭
 * 
 * @author lxz (2019/5/29/周三)
 * 
 * @param void 
 * 
 * @return int 
 */
int hw_power_is_off(void) {
	return POWER_IS_OFF();
}

/**
 * 电源是否打开
 * 
 * @author lxz (2019/5/29/周三)
 * 
 * @param void 
 * 
 * @return int 
 */
int hw_power_is_on(void) {
	return POWER_IS_ON();
}