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2.能帮我写一个用C语言实现的串口串口通讯程序吗?
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给个简单的。
main()
{
//初始化串口
SCON=0x;
TMOD=0x;
TH1=TL1=0xff;//视Fosc,码串码给实际波特率发生器初值。口通
TR1=1;
while(1)
{
while(RI==0);RI=0;
switch(SBUF)
{
case 0x:
SBUF=0x;while(TI==0);TI=0;
SBUF=0x;while(TI==0);TI=0;
SBUF=0x;while(TI==0);TI=0;
SBUF=0x;while(TI==0);TI=0;
SBUF=0x;while(TI==0);TI=0;
break;
case 0x:
SBUF=0x;while(TI==0);TI=0;
SBUF=0x;while(TI==0);TI=0;
SBUF=0x;while(TI==0);TI=0;
SBUF=0x;while(TI==0);TI=0;
SBUF=0x;while(TI==0);TI=0;
break;
}
}
}
实际情况:
1串口的信源源码商业初始化,波特率和通信模式设置。串口
2更详尽的码串码ranklib 源码协议还包括:输入的数据格式、返回的口通数据格式。(这里,信源我只是串口把当做了0x处理,返回的码串码内容是ASCII字符,六个数字1)
3当输入数据不止一个字节进行判断时,口通需要考虑串口接收的信源缓冲数组。同时对数组进行数据接收和判断。串口TiffToy源码并考虑用中断处理接收过程。码串码
4返回数据,口通考虑发送缓冲数组。metabase源码用中断考虑发送过程。
如果你愿意的话,大家更喜欢阅读程序,sonarqube源码修改或提出建议。以上只是个简单的例子。
能帮我写一个用C语言实现的串口通讯程序吗?
供参考
void MCU_Initialize(void)
{
SCON =0xDC; //在.MHz下,设置串行口波特率为,方式3,并允许接收 9为
SCON = 0x;
TCON = 0x;
TMOD |=0x; //定时器工作于方式2,自动装载方式 T0 位定时器
TH1=0xFD;
IP = 0X;
ES=1;
ET0=1;
//TR1=1;
EA=1;
}
////////////////////////////发送一个字节/////////////////////////////
/*void putchar(unsigned char byte)
{
if(JO_check(byte)==1)
TB8=0;
else
TB8=1;
SBUF=byte;
while(!TI)
TI=0;
} */
//////////////////////////////////串口接受程序 与通信//////////////////////
void RX() interrupt 4
{
if(RI==1)
{
RI=0;
CF[CaiYangJiShu]=SBUF;
if(RB8==JO_check(CF[CaiYangJiShu]))
{
Ji_Ou_fail=0; //奇偶效验失败 通知F从新发送
}
CaiYangJiShu++;
if(CaiYangJiShu==8)
{
TR1=0;
CS_=1;
CaiYangJiShu=0;
// CAIYANG_over=0; //完成一次采样标志
if(CF[0]==0x && CF[1]==0x && CF[6]==0xAA && CF[7]==0xAA&&Ji_Ou_fail==1)
{
CAIYANG_over=0;
CaiYnagDat=0;
CaiYnagDat<<=8;
CaiYnagDat += CF[5];
CaiYnagDat<<=8;
CaiYnagDat += CF[4];
CaiYnagDat<<=8;
CaiYnagDat += CF[3];
CaiYnagDat<<=8;
CaiYnagDat += CF[2];
}
}
}
}
这个程序是带奇偶校验的,可以在设置的时候去掉
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/* serrecv.c */
/* Receives and saves a file over a serial port */
/* Last modified: Septemeber , */
/* [goman] */
#include
#include
#include
/* Function to print out usage information */
void usage(void);
/* Function to set up the serial port settings with the specified baud rate,
no parity, and one stop bit */
void set_up_serial_port(HANDLE h, long baud);
/* Function to receive and save file from serial port */
void get_file_from_serial_port(HANDLE h, char *file_name, unsigned long file_length);
int main(int argc, char **argv)
{
HANDLE serial_port; /* Handle to the serial port */
long baud_rate = ; /* Baud rate */
char port_name[] = "COM1:"; /* Name of serial port */
unsigned long file_size; /* Size of file to receive in bytes */
unsigned long bytes_received; /* Bytes received from serial port */
unsigned long file_name_size; /* Size of file name in bytes */
char file_name[]; /* Name of file to receive */
/* Check mand line */
if (argc == 3)
{
/* Read in baud rate */
if (argv[1][1] != 'b' || sscanf(argv[2], "%ld", &baud_rate) != 1)
{
usage;
exit(0);
}
}
else if (argc != 1)
{
usage;
exit(0);
}
/* Open up a handle to the serial port */
serial_port = CreateFile(port_name, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
/* Make sure port was opened */
if (serial_port == INVALID_HANDLE_VALUE)
{
fprintf(stderr, "Error opening port\n");
CloseHandle(serial_port);
exit(0);
}
/* Set up the serial port */
set_up_serial_port(serial_port, baud_rate);
/* Receive file name size from serial port */
ReadFile(serial_port, (void *)&file_name_size, sizeof(unsigned long), &bytes_received, NULL);
if (bytes_received != sizeof(unsigned long))
{
fprintf(stderr, "Error getting file name size.\n");
CloseHandle(serial_port);
exit(0);
}
/* Receive file name from serial port */
ReadFile(serial_port, (void *)file_name, file_name_size, &bytes_received, NULL);
if (bytes_received != file_name_size)
{
fprintf(stderr, "Error retrieving file name.\n");
CloseHandle(serial_port);
exit(0);
}
/* Append NULL terminator to end of string */
file_name[bytes_received] = '\0';
/* Receive file size from serial port */
ReadFile(serial_port, (void *)&file_size, sizeof(unsigned long), &bytes_received, NULL);
if (bytes_received != sizeof(unsigned long))
{
fprintf(stderr, "Error getting file size.\n");
CloseHandle(serial_port);
exit(0);
}
/* Get the file from the serial port */
get_file_from_serial_port(serial_port, file_name, file_size);
/* Print out success information */
printf("\n%lu bytes successfully received and saved as %s\n", file_size, file_name);
/* Close handle */
CloseHandle(serial_port);
return 0;
}
void usage(void)
{
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\tserrecv [-b baud rate]\n");
fprintf(stderr, "\tDefault baud rate is \n");
fprintf(stderr, "tSupported baud rates: , , , , , \n");
return;
}
void set_up_serial_port(HANDLE h, long baud)
{
DCB properties; /* Properties of serial port */
/* Get the properties */
GetmState(h, &properties);
/* Set the baud rate */
switch(baud)
{
case :
properties.BaudRate = CBR_;
break;
case :
properties.BaudRate = CBR_;
break;
case :
properties.BaudRate = CBR_;
break;
case :
properties.BaudRate = CBR_;
break;
case :
properties.BaudRate = CBR_;
break;
case :
properties.BaudRate = CBR_;
break;
case :
properties.BaudRate = CBR_;
break;
default:
fprintf(stderr, "Invalid baud rate: %ld\n", baud);
usage;
exit(0);
break;
}
/* Set the other properties */
properties.Parity = NOPARITY;
properties.ByteSize = 8;
properties.StopBits = ONESTOPBIT;
SetmState(h, &properties);
return;
}
void get_file_from_serial_port(HANDLE h, char *file_name, unsigned long file_length)
{
FILE *data_file; /* File to create */
unsigned long bytes_left = file_length; /* Bytes left to receive */
unsigned long bytes_received_total = 0; /* Total bytes received */
unsigned long bytes_to_receive; /* Number of bytes to receive */
unsigned long bytes_received; /* Number of bytes receive */
char buffer[]; /* Buffer to store data */
/* Open the file */
data_file = fopen(file_name, "wb");
/* Quit if file couldn't be opened */
if (data_file == NULL)
{
fprintf(stderr, "Could not create file %s\n", file_name);
CloseHandle(h);
exit(0);
}
while (1)
{
/* Determine how many bytes to read */
if (bytes_left == 0)
{
break;
}
else if (bytes_left < )
{
bytes_to_receive = bytes_left;
}
else
{
bytes_to_receive = ;
}
/* Receive data over serial cable */
ReadFile(h, (void *)buffer, bytes_to_receive, &bytes_received, NULL);
if (bytes_received != bytes_to_receive)
{
fprintf(stderr, "Error reading file.\n");
CloseHandle(h);
exit(0);
}
/* Save buffer to file */
fwrite((void *)buffer, 1, bytes_received, data_file);
/* Decrement number of bytes left */
bytes_left -= bytes_received;
/* Increment number of bytes received */
bytes_received_total += bytes_received;
/* Print out progress */
printf("\r%5lu bytes received.", bytes_received_total);
}
fclose(data_file);
return;
}
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#include
int main(void)
{
FILE *fp;
char temp;
char buf[];
if((fp = fopen("3","r")) == NULL)
puts("this way doesn't work!\n");
else
puts("this way works!\n");
while(1)
{
temp = 0;
fscanf(fp,"%c",&temp);
if(temp != 0)
putchar(temp);
else
Sleep();
}
fclose(fp);
return 0;
}
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#include
#include
HANDLE h;
int main(void)
{
h=CreateFile(TEXT("COM3"),//COM1å£
GENERIC_READ|GENERIC_WRITE, //å 许读åå
0, //ç¬æ¹å¼
NULL,
OPEN_EXISTING, //æå¼èä¸æ¯å建
0, //åæ¥æ¹å¼
NULL);
if(h==(HANDLE)-1)
{
printf("æå¼COM失败!\n");
return FALSE;
}
else
{
printf("COMæå¼æåï¼\n");
}
Setupm(h,,); //è¾å ¥ç¼å²åºåè¾åºç¼å²åºå¤§å°é½æ¯
COMMTIMEOUTS TimeOuts;
//è®¾è¯»è¶ æ¶
TimeOuts.ReadIntervalTimeout=;
TimeOuts.ReadTotalTimeoutMultiplier=;
TimeOuts.ReadTotalTimeoutConstant=;
//设å®åè¶ æ¶
TimeOuts.WriteTotalTimeoutMultiplier=;
TimeOuts.WriteTotalTimeoutConstant=;
SetmTimeouts(h,&TimeOuts); //è®¾ç½®è¶ æ¶
DCB dcb;
GetmState(h,&dcb);
dcb.BaudRate=; //æ³¢ç¹ç为
dcb.ByteSize=8; //æ¯ä¸ªåèæ8ä½
dcb.Parity=NOPARITY; //æ å¥å¶æ ¡éªä½
dcb.StopBits=ONE5STOPBITS; //两个åæ¢ä½
SetmState(h,&dcb);
DWORD wCount;//读åçèæ°
BOOL bReadStat;
while(1)
{
Purgem(h,PURGE_TXCLEAR|PURGE_RXCLEAR); //æ¸ ç¼å²åº
char str[9]={ 0};
printf("%s\n",str);
bReadStat=ReadFile(h,str,9,&wCount,NULL);
if(!bReadStat)
{
printf("
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void UART_Initial (void)
{
P_Quasi_Mode; //Setting UART pin as Quasi mode for tran *** it
P_Quasi_Mode; //Setting UART pin as Quasi mode for tran *** it
SCON_1 = 0x; //UART1 Mode1,REN_1=1,TI_1=1
T3CON = 0x; //T3PS2=0,T3PS1=0,T3PS0=0(Prescale=1), UART1 in MODE 1
clr_BRCK;
RH3 = HIBYTE( - (/uBaudrate)-1); /* MHz */
RL3 = LOBYTE( - (/uBaudrate)-1); /* MHz */
set_TR3; //Trigger Timer3
}
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void Send_Data_To_UART1(UINT8 c)
{
TI_1 = 0;
SBUF_1 = c;
while(TI_1==0);
}
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void UART_isr (void) interrupt 4 //
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#include
int main(void)
{
FILE *fp;
char temp;
char buf[];
if((fp = fopen("3","r")) == NULL)
puts("this way doesn't work!\n");
else
puts("this way works!\n");
while(1)
{
temp = 0;
fscanf(fp,"%c",&temp);
if(temp != 0)
putchar(temp);
else
Sleep();
}
fclose(fp);
return 0;
}
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#include
#include
HANDLE h;
int main(void)
{
h=CreateFile(TEXT("COM3"),//COM1å£
GENERIC_READ|GENERIC_WRITE, //å 许读åå
0, //ç¬å æ¹å¼
NULL,
OPEN_EXISTING, //æå¼èä¸æ¯å»º
0, //åæ¥å¼
NULL);
if(h==(HANDLE)-1)
{
printf("æå¼COM失败!\n");
return FALSE;
}
else
{
printf("COMæå¼æåï¼\n");
}
Setupm(h,,); //è¾å ¥ç¼å²åºåè¾åºç¼å²åºç大å°é½æ¯
COMMTIMEOUTS TimeOuts;
//å®è¯»è¶ æ¶
TimeOuts.ReadIntervalTimeout=;
TimeOuts.ReadTotalTimeoutMultiplier=;
TimeOuts.ReadTotalTimeoutConstant=;
//设å®åè¶ æ¶
TimeOuts.WriteTotalTimeoutMultiplier=;
TimeOuts.WriteTotalTimeoutConstant=;
SetmTimeouts(h,&TimeOuts); //è®¾ç½®è¶ æ¶
DCB dcb;
GetmState(h,&dcb);
dcb.BaudRate=; //æ³¢ç¹ç为
dcb.ByteSize=8; //æ¯ä¸ªåèæ8ä½
dcb.Parity=NOPARITY; //æ å¥å¶æ ¡éªä½
dcb.StopBits=ONE5STOPBITS; //两个åæ¢ä½
SetmState(h,&dcb);
DWORD wCount;//读åçåè
BOOL bReadStat;
while(1)
{
Purgem(h,PURGE_TXCLEAR|PURGE_RXCLEAR); //æ¸ ç©ºç¼å²åº
char str[9]={ 0};
printf("%s\n",str);
bReadStat=ReadFile(h,str,9,&wCount,NULL);
if(!bReadStat)
{
printf("读串å£
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