}
void RH(void)
{
//主机拉低18ms
io=0;
Delay(180);
io=1;
//总线由上拉电阻拉高 主机延时20us
Delay_10us();
Delay_10us();
Delay_10us();
Delay_10us();
//主机设为输入判断从机响应信号
io=1;
//判断从机是否有低电平响应信号如不响应则跳出,响应则向下运行
if(!io)//T !
{
U8FLAG=2;
//判断从机是否发出 80us 的低电平响应信号是否结束
while((!io)&&U8FLAG++);
U8FLAG=2;
//判断从机是否发出 80us 的高电平,如发出则进入数据接收状态
while((io)&&U8FLAG++);
//数据接收状态
COM();
U8RH_data_H_temp=U8comdata;
COM();
U8RH_data_L_temp=U8comdata;
COM();
U8T_data_H_temp=U8comdata;
COM();
U8T_data_L_temp=U8comdata;
COM();
U8checkdata_temp=U8comdata;
io=1;
//数据校验
U8temp=(U8T_data_H_temp+U8T_data_L_temp+U8RH_data_H_temp+U8RH_data_L_temp);
if(U8temp==U8checkdata_temp)
{
U8RH_data_H=U8RH_data_H_temp;U8RH_data_L=U8RH_data_L_temp;
U8T_data_H=U8T_data_H_temp;
U8T_data_L=U8T_data_L_temp;
U8checkdata=U8checkdata_temp;
}
//湿度整数部分
s1[0] = (char)(0X30+U8RH_data_H/10);
s1[1] = (char)(0X30+U8RH_data_H);
//湿度小数部分
s1[2] = (char)(0X30+U8RH_data_L/10);
//温度整数部分
s2[0] = (char)(0X30+U8T_data_H/10);
s2[1] = (char)(0X30+U8T_data_H);
//温度小数部分
s2[2] = (char)(0X30+U8T_data_L/10);
}
}
//*******************************
//液晶显示函数
void disp()
{
LCD_disp_char(0,1,‘s’);
LCD_disp_char(1,1,‘h’);
LCD_disp_char(2,1,‘i’);
LCD_disp_char(3,1,‘d’);
LCD_disp_char(4,1,‘u’);
LCD_disp_char(5,1,‘:’);
LCD_disp_char(6,1,s1[0]);
LCD_disp_char(7,1,s1[1]);
LCD_disp_char(8,1,‘。’);
LCD_disp_char(9,1,s1[2]);
LCD_disp_char(10,1,‘%’);
LCD_disp_char(11,1,‘R’);
LCD_disp_char(12,1,‘H’);
LCD_disp_char(0,2,‘w’);
LCD_disp_char(1,2,‘e’);
LCD_disp_char(2,2,‘n’);
LCD_disp_char(3,2,‘d’);
LCD_disp_char(4,2,‘u’);
LCD_disp_char(5,2,‘:’);
LCD_disp_char(6,2,s2[0]);
LCD_disp_char(7,2,s2[1]);
LCD_disp_char(8,2,‘。’);
LCD_disp_char(9,2,s2[2]);