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uart.c
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uart.c
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#include <string.h>
#include <stdio.h>
#include <STC8.H>
#include <uart.h>
#include <DS1302.H>
unsigned char xdata ReceiveData[len]; //串口中断接受数据长度len
char code DS1302_Month[12][5] ={{"Jan"},{"Feb"},{"Mar"},{"Apr"},{"May"},{"Jun"},{"Jul"},{"Aug"},{"Sep"},{"Oct"},{"Nov"},{"Dec"}};
char xdata DS1302_MonthRec[5] = {'\0','\0','\0','\0','\0'};
char code DS1302_Day[7][4] = {{"Mon"},{"Tue"},{"Wed"},{"Thu"},{"Fri"},{"Sat"},{"Sun"}};
char xdata DS1302_DayRec[4] = {'\0','\0','\0','\0'};
void Uart2Init(void) //[email protected] 初始化串口2
{
S2CON = 0x50; //8位数据,可变波特率
AUXR |= 0x04; //定时器2时钟为Fosc,即1T
T2L = 0xD0; //设定定时初值
T2H = 0xFF; //设定定时初值
AUXR |= 0x10; //启动定时器2
IE2 = 0;
EA = 1;
}
void UartInit(void) //[email protected] 初始化串口1
{
SCON = 0x50; //8位数据,可变波特率
AUXR |= 0x40; //定时器1时钟为Fosc,即1T
AUXR &= 0xFE; //串口1选择定时器1为波特率发生器
TMOD &= 0x0F; //设定定时器1为16位自动重装方式
TL1 = 0xD0; //设定定时初值
TH1 = 0xFF; //设定定时初值
ET1 = 0; //禁止定时器1中断
TR1 = 1; //启动定时器1
ES = 0; //禁用串口1中断
EA = 1; //总中断
}
void sendByte(unsigned char b) // 串口1发送单个字符
{
ES=0;
SBUF = b;
while(TI == 0);
TI = 0;
ES=1;
}
void send2Byte(unsigned char b) // 串口2发送单个字符
{
IE2=0;
S2BUF = b;
while(!(S2CON&S2TI));
S2CON &= ~0X02;
IE2 = ES2;
}
void sendStr(char *s) //串口1发送字符串
{
while(*s != '\0')
{
sendByte(*s);
s++;
}
}
void send2Str(char *s) //串口2发送字符串 格式:send2Str("指令\r\n")
{
while(*s != '\0')
{
send2Byte(*s);
s++;
}
}
void Uart_Interrupt() interrupt 8 //串口2（连接eps8266）中断服务程序
{
char ReceiveDataByte;
static unsigned char i=0;
unsigned char a,c,d = 0;
if(S2CON & 0X01 ) //判断中断类型
{
S2CON &= ~0X01; //标志位清除
ReceiveDataByte = S2BUF;
if(ReceiveDataByte == ':' || i>0) // 数据取第一个":"之后的值
{
ReceiveData[i] = ReceiveDataByte;
i++;
if(ReceiveDataByte == '\n' || i>=len) //判断接受字符完成
{
i = 0;
//此处填写接受数据后相应的动作
sendStr(ReceiveData);
DS1302_Time[0] = (ReceiveData[23]-0x30)<<4 | (ReceiveData[24]-0x30);
DS1302_Time[2] = (ReceiveData[9]-0x30)<<4 | (ReceiveData[10]-0x30);
DS1302_Time[3] = (ReceiveData[12]-0x30)<<4 | (ReceiveData[13]-0x30);
DS1302_Time[4] = (ReceiveData[15]-0x30)<<4 | (ReceiveData[16]-0x30);
DS1302_Time[5] = (ReceiveData[18]-0x30)<<4 | (ReceiveData[19]-0x30);
DS1302_DayRec[0] = ReceiveData[1];
DS1302_DayRec[1] = ReceiveData[2];
DS1302_DayRec[2] = ReceiveData[3];
DS1302_MonthRec[0] = ReceiveData[5];
DS1302_MonthRec[1] = ReceiveData[6];
DS1302_MonthRec[2] = ReceiveData[7]; //以上、下将MCU接收的ASCII码时间转换为BCD码时间
memset(ReceiveData,'\0',sizeof(ReceiveData));
for (d = 0; d < 7; d++) //通过Receivedata判断星期并转化为BCD码
{
if(strstr(DS1302_Day[d],DS1302_DayRec) != NULL)
{
c = d+1;
DS1302_Time[6] = c/10*16+c%10;
}
}
for (a = 0; a < 12; a++) //通过Receivedata判断月份并转化为BCD码
{
if(strstr(DS1302_Month[a],DS1302_MonthRec) != NULL)
{
c = a+1;
DS1302_Time[1] = c/10*16+c%10;
}
}
if(DS1302_Time[0] != 0x70) //判断获取时间是否有效避免1970年
{
DS1302_SetTimeBCD(); //使用BCD码设置DS1302时间
}
}
}
}
else
{
S2CON &= ~0X02; ////标志位清除
}
}