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Added RTS and CTS signal handing, saffer read and write functions....
Added RTS and CTS signal handing, saffer read and write functions. Changed to 2.0.0 version!
jeandet@pc-de-jeandet3.lab-lpp.local - - Load All Authors

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RS232_win.c
287 lines | 5.1 KiB | text/x-c | CLexer
/ src / RS232_win.c
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#include "rs232config.h"
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#include "RS232.h"
#ifdef HAVE_WINDOWS_H
rs232speed_t rs232cfspeed(unsigned int BaudeRate)
{
if(BaudeRate<123)
return CBR_110;
if(BaudeRate<450)
return CBR_300;
if(BaudeRate<900)
return CBR_600;
if(BaudeRate<1500)
return CBR_1200;
if(BaudeRate<3600)
return CBR_2400;
if(BaudeRate<7200)
return CBR_4800;
if(BaudeRate<14000)
return CBR_9600;
if(BaudeRate<16800)
return CBR_14400;
if(BaudeRate<28800)
return CBR_19200;
if(BaudeRate<48000)
return CBR_38400;
if(BaudeRate<86400)
return CBR_57600;
if(BaudeRate<172800)
return CBR_115200;
else
return CBR_256000;
}
rs232port_t rs232open(char* psPortName)
{
rs232port_t fd;
fd = CreateFile(psPortName,GENERIC_READ | GENERIC_WRITE,0,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
return fd;
}
int rs232close(rs232port_t fd)
{
if (fd == badPortValue)
{
return -1;
}
else
{
CloseHandle(fd);
return 0;
}
}
int rs232setup(rs232port_t fd, int ChSize, int BaudeRate, rs232parity Parity, rs232stop NbStop)
{
if (fd == badPortValue)
{
return -1;
}
else
{
DCB dcbSerialParams = {0};
dcbSerialParams.DCBlength=sizeof(dcbSerialParams);
GetCommState(fd, &dcbSerialParams);
dcbSerialParams.BaudRate=rs232cfspeed(BaudeRate);
dcbSerialParams.ByteSize=ChSize;
dcbSerialParams.StopBits=NbStop;
dcbSerialParams.Parity=Parity;
SetCommState(fd, &dcbSerialParams);
COMMTIMEOUTS timeouts={0};
timeouts.ReadIntervalTimeout=10;
timeouts.ReadTotalTimeoutConstant=10;
timeouts.ReadTotalTimeoutMultiplier=1;
timeouts.WriteTotalTimeoutConstant=50;
timeouts.WriteTotalTimeoutMultiplier=10;
SetCommTimeouts(fd, &timeouts);
return 0;
}
}
int rs232setbaudrate(rs232port_t fd, int baudrate)
{
if (fd == badPortValue)
{
return -1;
}
else
{
DCB dcbSerialParams = {0};
dcbSerialParams.DCBlength=sizeof(dcbSerialParams);
GetCommState(fd, &dcbSerialParams);
dcbSerialParams.BaudRate=rs232cfspeed(baudrate);
SetCommState(fd, &dcbSerialParams);
return 0;
}
}
int rs232setparity(rs232port_t fd, rs232parity Parity)
{
if (fd == badPortValue)
{
return -1;
}
else
{
DCB dcbSerialParams = {0};
dcbSerialParams.DCBlength=sizeof(dcbSerialParams);
GetCommState(fd, &dcbSerialParams);
dcbSerialParams.Parity = Parity;
SetCommState(fd, &dcbSerialParams);
return 0;
}
}
int rs232setnbstop(rs232port_t fd, rs232stop NbStop)
{
if (fd == badPortValue)
{
return -1;
}
else
{
DCB dcbSerialParams = {0};
dcbSerialParams.DCBlength=sizeof(dcbSerialParams);
GetCommState(fd, &dcbSerialParams);
switch(NbStop)
{
case 2:
dcbSerialParams.StopBits = 2;
break;
default:
dcbSerialParams.StopBits = 1;
break;
}
SetCommState(fd, &dcbSerialParams);
return 0;
}
}
int rs232setcsize(rs232port_t fd, int ChSize)
{
if (fd == badPortValue)
{
return -1;
}
else
{
DCB dcbSerialParams = {0};
dcbSerialParams.DCBlength=sizeof(dcbSerialParams);
GetCommState(fd, &dcbSerialParams);
dcbSerialParams.ByteSize = ChSize;
SetCommState(fd, &dcbSerialParams);
return 0;
}
}
int rs232write(rs232port_t fd,char *psWrite, int WriteBufferSize)
{
if (fd == badPortValue)
{
return -1;
}
else
{
DWORD dwBytesWriten = 0;
WriteFile(fd, psWrite, WriteBufferSize, &dwBytesWriten, NULL);
return dwBytesWriten;
}
}
int rs232read(rs232port_t fd,char *psRead, int ReadBufferSize)
{
if (fd == badPortValue)
{
return -1;
}
else
{
DWORD dwBytesRead = 0;
ReadFile(fd, psRead, ReadBufferSize, &dwBytesRead, NULL);
return dwBytesRead;
}
}
int rs232saferead(rs232port_t fd,char* data,int count )
{
int read=0;
int i=0;
for(i=0;i<100;i++)
{
read = rs232read(fd,data,count);
count -=read;
data+=read;
if(count==0)
return 0;
}
return -1;
}
int rs232safewrite(rs232port_t fd,char* data,int count)
{
int written=0;
int i=0;
for(i=0;i<1000;i++)
{
written = rs232write(fd,data+written,count);
count-=written;
data+=written;
if(count==0)
return 0;
}
return -1;
}
int rs232setRTS(rs232port_t fd)
{
if(EscapeCommFunction(fd, SETRTS))
return 0;
return -1;
}
int rs232clearRTS(rs232port_t fd)
{
if(EscapeCommFunction(fd, CLRRTS))
return 0;
return -1;
}
int rs232setDTR(rs232port_t fd)
{
if(EscapeCommFunction(fd, SETDTR))
return 0;
return -1;
}
int rs232clearDTR(rs232port_t fd)
{
if(EscapeCommFunction(fd, CLRDTR))
return 0;
return -1;
}
#endif //#ifdef HAVE_WINDOWS_H