STC12C5A60S2单片机 串口调试

与串口1中断相关的寄存器有IE、IPH和IP

串口中断允许位ES位于中断允许寄存器IE中。

EA：CPU的总中断允许控制位，EA=1，CPU开总中断；EA=0，CPU关总中断。各中断源首先受EA控制，其次还受各中断源自己的中断允许控制位控制。

与串口2中断相关的寄存器IE2、IP2H和IP2

串口2中断允许为ES2位于中断寄存器IE2中。

 1 #ifndef _UART_H_
 2 #define _UART_H_
 3
 4 #define uchar   unsigned char
 5 #define uint    unsigned int
 6
 7 //定义串口1口开关，关闭则不能接收数据
 8 #define OpenUART1()     ES=1
 9 #define CloseUART1()    ES=0
10 #define OpenUART2()     IE2|=0x01
11 #define CloseUART2()    IE2&=0xFE
12
13 //缓存串口1和串口2接收到的字符
14 extern uchar UART1_Recv_Val;
15 extern uchar UART2_Recv_Val;
16
17 void UART1_Init(uchar RELOAD, bit doubleBaud, bit timeMod);
18 void UART2_Init(uchar RELOAD, bit doubleBaud, bit timeMod);
19 void UART1_SendOneChar(uchar val);
20 void UART2_SendOneChar(uchar val);
21 void UART1_SendStr(uchar *str);
22 void UART2_SendStr(uchar *str);
23 #endif

uart.c代码如下：

  1 #include <STC12C5A.H>     //STC12C5A系列单片机
  2 #include <intrins.h>
  3 #include "UART.H"
  4
  5 #define uchar   unsigned char
  6 #define uint    unsigned int
  7
  8 //缓存串口1和串口2接收到的字符
  9 uchar UART1_Recv_Val = 0;
 10 uchar UART2_Recv_Val = 0;
 11
 12
 13
 14 void UART1_Init(uchar RELOAD, bit doubleBaud, bit timeMod)
 15 {
 16     SCON |= 0x50;       //串口1方式1,接收充许
 17
 18     BRT = RELOAD;       //波特率2400
 19
 20     if (timeMod == 1)       //1T
 21     {
 22         //T0x12   T1x12   UM0x6   BRTR    S2SMOD  BRTx12  EXTRAM  S1BRS
 23         AUXR |= 0x15;       //串口1使用独立波特率发生器，独立波特率发生器1T
 24     }
 25     else                    //12T
 26     {
 27         AUXR |= 0x11;
 28     }
 29
 30     if (doubleBaud == 1)
 31     {
 32         PCON |= 0x80;     //波特率加倍
 33     }
 34     else
 35     {
 36         PCON &= 0x7F;     //波特率不加倍
 37     }
 38
 39     EA = 1;
 40     ES = 1;             //充许串口1中断
 41 }
 42
 43
 44
 45 void UART2_Init(uchar RELOAD, bit doubleBaud, bit timeMod)
 46 {
 47     //S2SM0  S2SM1   S2SM2   S2REN   S2TB8   S2RB8   S2TI     S2RI
 48     S2CON |= 0x50;      //串口2,方式1，接收充许
 49
 50     BRT = RELOAD;
 51
 52     if (timeMod == 1)       //1T
 53     {
 54         //T0x12   T1x12   UM0x6   BRTR    S2SMOD  BRTx12  EXTRAM  S1BRS
 55         AUXR |= 0x14;       //串口1使用独立波特率发生器，独立波特率发生器1T
 56     }
 57     else                    //12T
 58     {
 59         AUXR = (AUXR | 0x10) & 0xFB;
 60     }
 61
 62     if (doubleBaud == 1)
 63     {
 64         AUXR |= 0x08;       //波特率加倍
 65     }
 66     else
 67     {
 68         AUXR &= 0xF7;       //波特率不加倍
 69     }
 70
 71     EA = 1;
 72     //-       -       -       -       -       -       ESPI    ES2
 73     IE2 |= 0x01;            //充许串口2中断
 74 }
 75
 76
 77
 78 void UART1_SendOneChar(uchar val)
 79 {
 80     //ES = 0;                   //关闭串口1中断
 81
 82     SBUF = val;
 83     while(TI == 0);
 84     TI = 0;
 85
 86     //ES = 1;                  //恢复串口1中断
 87 }
 88
 89
 90
 91 void UART2_SendOneChar(uchar val)
 92 {
 93     //IE2 = 0x00;                 //关闭串口2中断
 94
 95     S2BUF = val;
 96     while ((S2CON & 0x02) == 0);
 97     S2CON &= 0xFD;
 98
 99     //IE2 = 0x01;                //恢复串口2中断
100 }
101
102
103
104 void UART1_SendStr(uchar *str)
105 {
106     while( (*str)!=‘/0‘ )
107     {
108         UART1_SendOneChar(*str);
109         str++;
110     }
111 }
112
113
114
115 void UART2_SendStr(uchar *str)
116 {
117     while( (*str)!=‘/0‘ )
118     {
119         UART2_SendOneChar(*str);
120         str++;
121     }
122 }
123
124
125
126 void UART1_Int(void) interrupt 4
127 {
128     if (RI == 1)
129     {
130         RI = 0;
131         UART1_Recv_Val = SBUF;
132     }
133 }
134
135
136
137 void UART2_Int(void) interrupt 8
138 {
139     if ((S2CON & 0x01) == 1)
140     {
141         S2CON &= 0xFE;
142         UART2_Recv_Val = S2BUF;
143     }
144 }