RS232 code rewrote: now we can use it on Windows.
This commit is contained in:
Romuald Conty
parent
645796d0b2
commit
b110b5b5a9
1 changed files with 64 additions and 147 deletions
211
src/rs232.c
211
src/rs232.c
|
|
@ -24,7 +24,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|||
|
||||
#include "rs232.h"
|
||||
|
||||
#ifndef _WIN32 /* Linux */
|
||||
// Test if we are dealing with unix operating systems
|
||||
#ifndef _WIN32
|
||||
|
||||
typedef struct termios term_info;
|
||||
typedef struct {
|
||||
|
|
@ -136,169 +137,85 @@ bool rs232_send(const serial_port sp, const byte* pbtTx, const uint32_t uiTxLen)
|
|||
return (iResult >= 0);
|
||||
}
|
||||
|
||||
#else /* windows */
|
||||
#else
|
||||
// The windows serial port implementation
|
||||
|
||||
typedef struct {
|
||||
HANDLE hPort; // Serial port handle
|
||||
DCB dcb; // Device control settings
|
||||
COMMTIMEOUTS ct; // Serial port time-out configuration
|
||||
} serial_port_windows;
|
||||
|
||||
HANDLE Cport[16];
|
||||
|
||||
|
||||
char comports[16][10]={"\\\\.\\COM1", "\\\\.\\COM2", "\\\\.\\COM3", "\\\\.\\COM4",
|
||||
"\\\\.\\COM5", "\\\\.\\COM6", "\\\\.\\COM7", "\\\\.\\COM8",
|
||||
"\\\\.\\COM9", "\\\\.\\COM10", "\\\\.\\COM11", "\\\\.\\COM12",
|
||||
"\\\\.\\COM13", "\\\\.\\COM14", "\\\\.\\COM15", "\\\\.\\COM16"};
|
||||
|
||||
char baudr[64];
|
||||
|
||||
|
||||
int OpenComport(int comport_number, int baudrate)
|
||||
serial_port rs232_open(const char* pcPortName)
|
||||
{
|
||||
if((comport_number>15)||(comport_number<0))
|
||||
char acPortName[255];
|
||||
serial_port_windows* sp = malloc(sizeof(serial_port_windows));
|
||||
|
||||
// Copy the input "com?" to "\\.\COM?" format
|
||||
sprintf(acPortName,"\\\\.\\%s",pcPortName);
|
||||
_strupr(acPortName);
|
||||
|
||||
// Try to open the serial port
|
||||
sp->hPort = CreateFileA(acPortName,GENERIC_READ|GENERIC_WRITE,NULL,NULL,OPEN_EXISTING,NULL,NULL);
|
||||
if (sp->hPort == INVALID_HANDLE_VALUE)
|
||||
{
|
||||
printf("illegal comport number\n");
|
||||
return(1);
|
||||
rs232_close(sp);
|
||||
return INVALID_SERIAL_PORT;
|
||||
}
|
||||
|
||||
switch(baudrate)
|
||||
// Prepare the device control
|
||||
memset(&sp->dcb, 0, sizeof(DCB));
|
||||
sp->dcb.DCBlength = sizeof(DCB);
|
||||
if(!BuildCommDCBA("baud=9600 data=8 parity=N stop=1",&sp->dcb))
|
||||
{
|
||||
sscanf(baudr,"baud=%d data=8 parity=N stop=1",baudrate);
|
||||
/*
|
||||
case 110 : strcpy(baudr, "baud=110 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 300 : strcpy(baudr, "baud=300 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 600 : strcpy(baudr, "baud=600 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 1200 : strcpy(baudr, "baud=1200 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 2400 : strcpy(baudr, "baud=2400 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 4800 : strcpy(baudr, "baud=4800 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 9600 : strcpy(baudr, "baud=9600 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 19200 : strcpy(baudr, "baud=19200 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 38400 : strcpy(baudr, "baud=38400 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 57600 : strcpy(baudr, "baud=57600 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 115200 : strcpy(baudr, "baud=115200 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 128000 : strcpy(baudr, "baud=128000 data=8 parity=N stop=1");
|
||||
break;
|
||||
case 256000 : strcpy(baudr, "baud=256000 data=8 parity=N stop=1");
|
||||
break;
|
||||
default : printf("invalid baudrate\n");
|
||||
return(1);
|
||||
break;
|
||||
*/
|
||||
rs232_close(sp);
|
||||
return INVALID_SERIAL_PORT;
|
||||
}
|
||||
|
||||
Cport[comport_number] = CreateFileA(comports[comport_number],
|
||||
GENERIC_READ|GENERIC_WRITE,
|
||||
0, /* no share */
|
||||
NULL, /* no security */
|
||||
OPEN_EXISTING,
|
||||
0, /* no threads */
|
||||
NULL); /* no templates */
|
||||
|
||||
if(Cport[comport_number]==INVALID_HANDLE_VALUE)
|
||||
// Update the active serial port
|
||||
if(!SetCommState(sp->hPort,&sp->dcb))
|
||||
{
|
||||
printf("unable to open comport\n");
|
||||
return(1);
|
||||
rs232_close(sp);
|
||||
return INVALID_SERIAL_PORT;
|
||||
}
|
||||
|
||||
DCB port_settings;
|
||||
memset(&port_settings, 0, sizeof(port_settings)); /* clear the new struct */
|
||||
port_settings.DCBlength = sizeof(port_settings);
|
||||
|
||||
if(!BuildCommDCBA(baudr, &port_settings))
|
||||
{
|
||||
printf("unable to set comport dcb settings\n");
|
||||
CloseHandle(Cport[comport_number]);
|
||||
return(1);
|
||||
}
|
||||
|
||||
if(!SetCommState(Cport[comport_number], &port_settings))
|
||||
{
|
||||
printf("unable to set comport cfg settings\n");
|
||||
CloseHandle(Cport[comport_number]);
|
||||
return(1);
|
||||
}
|
||||
|
||||
COMMTIMEOUTS Cptimeouts;
|
||||
|
||||
Cptimeouts.ReadIntervalTimeout = MAXDWORD;
|
||||
Cptimeouts.ReadTotalTimeoutMultiplier = 0;
|
||||
Cptimeouts.ReadTotalTimeoutConstant = 0;
|
||||
Cptimeouts.WriteTotalTimeoutMultiplier = 0;
|
||||
Cptimeouts.WriteTotalTimeoutConstant = 0;
|
||||
|
||||
if(!SetCommTimeouts(Cport[comport_number], &Cptimeouts))
|
||||
{
|
||||
printf("unable to set comport time-out settings\n");
|
||||
CloseHandle(Cport[comport_number]);
|
||||
return(1);
|
||||
}
|
||||
|
||||
return(0);
|
||||
}
|
||||
|
||||
|
||||
int PollComport(int comport_number, unsigned char *buf, int size)
|
||||
{
|
||||
int n;
|
||||
|
||||
if(size>4096) size = 4096;
|
||||
|
||||
/* added the void pointer cast, otherwise gcc will complain about */
|
||||
/* "warning: dereferencing type-punned pointer will break strict aliasing rules" */
|
||||
|
||||
ReadFile(Cport[comport_number], buf, size, (LPDWORD)((void *)&n), NULL);
|
||||
|
||||
return(n);
|
||||
}
|
||||
|
||||
|
||||
int SendByte(int comport_number, unsigned char byte)
|
||||
{
|
||||
int n;
|
||||
|
||||
WriteFile(Cport[comport_number], &byte, 1, (LPDWORD)((void *)&n), NULL);
|
||||
|
||||
if(n<0) return(1);
|
||||
|
||||
return(0);
|
||||
}
|
||||
|
||||
|
||||
int SendBuf(int comport_number, unsigned char *buf, int size)
|
||||
{
|
||||
int n;
|
||||
|
||||
if(WriteFile(Cport[comport_number], buf, size, (LPDWORD)((void *)&n), NULL))
|
||||
{
|
||||
return(n);
|
||||
}
|
||||
|
||||
return(-1);
|
||||
}
|
||||
|
||||
bool rs232_cts(const serial_port sp);
|
||||
{
|
||||
int status;
|
||||
sp->ct.ReadIntervalTimeout = 30;
|
||||
sp->ct.ReadTotalTimeoutMultiplier = 0;
|
||||
sp->ct.ReadTotalTimeoutConstant = 0;
|
||||
sp->ct.WriteTotalTimeoutMultiplier = 0;
|
||||
sp->ct.WriteTotalTimeoutConstant = 0;
|
||||
|
||||
GetCommModemStatus(Cport[comport_number], (LPDWORD)((void *)&status));
|
||||
|
||||
if(status&MS_CTS_ON) return(1);
|
||||
else return(0);
|
||||
if(!SetCommTimeouts(sp->hPort,&sp->ct))
|
||||
{
|
||||
rs232_close(sp);
|
||||
return INVALID_SERIAL_PORT;
|
||||
}
|
||||
|
||||
return sp;
|
||||
}
|
||||
|
||||
|
||||
void CloseComport(int comport_number)
|
||||
void rs232_close(const serial_port sp)
|
||||
{
|
||||
CloseHandle(Cport[comport_number]);
|
||||
CloseHandle(((serial_port_windows*)sp)->hPort);
|
||||
free(sp);
|
||||
}
|
||||
|
||||
bool rs232_cts(const serial_port sp)
|
||||
{
|
||||
DWORD dwStatus;
|
||||
if (GetCommModemStatus(((serial_port_windows*)sp)->hPort,&dwStatus) == NULL) return false;
|
||||
return (dwStatus & MS_CTS_ON);
|
||||
}
|
||||
|
||||
bool rs232_receive(const serial_port sp, byte* pbtRx, uint32_t* puiRxLen)
|
||||
{
|
||||
return (ReadFile(((serial_port_windows*)sp)->hPort,pbtRx,*puiRxLen,(LPDWORD)puiRxLen,NULL) != NULL);
|
||||
}
|
||||
|
||||
bool rs232_send(const serial_port sp, const byte* pbtTx, const uint32_t uiTxLen)
|
||||
{
|
||||
DWORD dwTxLen;
|
||||
return (WriteFile(((serial_port_windows*)sp)->hPort,pbtTx,uiTxLen,&dwTxLen,NULL) != NULL);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in a new issue