C语言串口通信源代码Word文件下载.docx

1、static unsigned char BufferMaxBufLen; CharsInBuf,CircIn,CircOut;static void （interrupt far *OldAsyncInt）（）;static void interrupt far AsyncInt（void）;void Init_COM（int ComPortAddr, unsigned char IntVectNum, int Baud, unsigned char Data, unsigned char Stop, unsigned char Parity）unsigned char High,Low;i

2、nt f;comportaddr=ComPortAddr;intvectnum=IntVectNum;CharsInBuf=0;CircIn=0;CircOut=0;f=（Baud/100）;f=1152/f; High=f/256;Low=f-High*256;outp（ComPortAddr+3,0x80）;outp（ComPortAddr,Low）;outp（ComPortAddr+1,High）;Data=（Data-5）|（Stop-1）*4）;if（Parity=2） Data=Data|0x18;else if（Parity=1） Data=Data|0x8;outp（ComPo

3、rtAddr+3,Data）;outp（ComPortAddr+4,0x0a）;outp（ComPortAddr+1,0x01）;disable（）;OldAsyncInt=getvect（ IntVectNum ）;setvect（ IntVectNum, AsyncInt ）;enable（）;maskb=inp（Port8259+1）;if（IntVectNum=0x0c）outp（Port8259+1,maskb&0xef）;else outp（Port8259+1,maskb&0xf7）;static void interrupt far AsyncInt（void）if（Chars

4、InBufMaxBufLen） BufferCircIn=inp（comportaddr）;if（CircIn0） （*Char）=BufferCircOut; if（CircOutMaxBufLen-1）CircOut+; else CircOut=0; CharsInBuf-; Flag=0; return Flag;int SendChar（unsigned char Char）if（inp（comportaddr+5）&0x20）=0） return -1;outp（comportaddr,Char）;return 0;main（）int i,c;unsigned char InCha

5、r;Init_COM（COM232,COMINT,1200,8,1,0）;while（1） if（kbhit（） if（InChar=getch（）=27）break; else while（SendChar（InChar）; if（GetCharInBuf（&InChar）=0） printf（%c,InChar）;Restore（）;接收程序：#include stdlib.hmath.h#define RXD 0 /接收#define TXD 0 /发送#define LSB 0 /波特率调节低8位#define MSB 1 /波特率调节高8位#define IER 1 / 中断起用寄存

6、器#define IIR 2 /中断标识寄存器#define LCR 3 /线路控制寄存器#define MCR 4 /调制解调器控制寄存器#define LSR 5 /线路状态寄存器#define MSR 6 /调制解调器状态寄存器#define IERV 1#define OUT2 0x08#define ERTS 2#define EDTR 1#define EMPTY 0X20#define READY 0X30#define ICREG 0X20#define IMASKREG 0X21#define EOI 0X20#define WAITCOUNT 5000#define BUF

7、FLEN 2048 /用于存储字符的数组的界#define ALTE 0X12#define ALTQ 0X10#define SER_BAUD_1200 96 #define SER_BAUD_2400 48#define SER_BAUD_9600 0x0C#define SER_BAUD_19200 6#define SER_STOP_1 0 /*/ 1 stop bit per character*/#define SER_STOP_2 4 /*/ 2 stop bits per character*/#define SER_BITS_5 0 /*/ send 5 bit charac

8、ters*/#define SER_BITS_6 1 /*/ send 6 bit characters*/#define SER_BITS_7 2 /*/ send 7 bit characters*/#define SER_BITS_8 3 /*/ send 8 bit characters*/#define SER_PARITY_NONE 0 /*/ no parity*/#define SER_PARITY_ODD 8 /*/ odd parity*/#define SER_PARITY_EVEN 24 /*/ even parity*/int port;int ComNum;unsi

9、gned portaddr;unsigned portf;unsigned int baudtable=0x180,0xc0,0x60,0x30,0x18,0x0c,0x06;unsigned char paritytable=0x08,0x18,0x00,0x28,0x38;unsigned char bufferBUFFLEN;/recv bufint buffin=0;int buffout=0;int incount=0;int outcount=0;void interrupt（*vect_com）（.）;void putb（unsigned char ch）/write a cha

10、r to the recvbuf 将中断得到的数据写到缓冲区int temp;temp=buffin;if（+buffin=BUFFLEN） buffin=0;if（buffin!=buffout） bufferbuffin=ch; / printf（bufferin%d=%c,bufferbuffin）; / getch（）; else buffin=temp;unsigned char getb（）/read a char from the recvbufif（buffout!=buffin） if（+buffout=BUFFLEN） buffout=0; /printf（bufferou

11、t%d=%c,buffout,bufferbuffout）; return（bufferbuffout）; return（0xff）;/*unsigned char sender（ unsigned char ch）outportb（portaddr2+TXD,ch）;printf（nsender outportdata=%cn,ch）;outcount+;return（1）;*/void interrupt receiver（.）unsigned char ch;ch=inportb（portaddr+RXD）;putb（ch）;incount+; /记录接收了多少个数据。outportb（ICREG,EOI）;void SerInit（int baud,int configuration）disable（）;outportb（portaddr+LCR,0x80）;outportb（portaddr+LSB,baud）;outportb（portaddr+MSB,0x00）;outportb（portaddr+LCR,configurati