bh1750

#define BH1750_ADDR_L 0x23
#define BH1750_ON 0x01
#define BH1750_MODE_1 0x10
#define BH1750_RESET 0x07

uint16_t lux=0;
uint8_t time=120;


void BH1750_Cmd_Write(uint8_t cmd)
{
	uint8_t data[1];
		data[0] = cmd;
		while(HAL_I2C_Master_Transmit_IT(&hi2c1,BH1750_ADDR_L << 1,(uint8_t*)data,1)!=HAL_OK);
		__HAL_I2C_CLEAR_FLAG(&hi2c1,I2C_FLAG_STOPF);
		HAL_Delay(100);
}

void BH1750_Start(void){
	BH1750_Cmd_Write(BH1750_ON);
	BH1750_Cmd_Write(BH1750_RESET);
	BH1750_Cmd_Write(BH1750_MODE_1);


}



uint16_t BH1750_Read(){
	uint8_t data_re[2];
	uint8_t res;
	while(HAL_I2C_Master_Receive(&hi2c1,BH1750_ADDR_L << 1,(uint8_t*) data_re,2,time*2)!=HAL_OK);
	HAL_Delay(100);
	res=data_re[0];
	res=(data_re[0] << 8)+data_re[1];
	res=res/1.2;
	HAL_Delay(100);
	return res;

}