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svn path=/trunk/externals/iem/comport/; revision=5282
This commit is contained in:
Martin Peach 2006-06-21 23:42:00 +00:00
parent 5b5d56d168
commit dd962bf7d8
1 changed files with 249 additions and 109 deletions
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358
comport/comport.c
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@ -3,10 +3,12 @@
(c) 1998-2005 Winfried Ritsch (see LICENCE.txt) (c) 1998-2005 Winfried Ritsch (see LICENCE.txt)
Institute for Electronic Music - Graz Institute for Electronic Music - Graz
V 1.0 V 1.0
MP 20060603 memset and memcpy arguments were backwards for Windows version. close_serial doesn't crash now. MP 20060603 memset and memcpy arguments were backwards for Windows version. close_serial doesn't crash now.
MP 20060618 make sure name is set up in comport_new (x->serial_device = test.serial_device) so help message works. MP 20060618 make sure name is set up in comport_new (x->serial_device = test.serial_device) so help message works.
MP 20060619 implemented status outlet
MP 20060620 Add DTR and RTS control, add outputs to reflect CTS and DSR states.
MP 20060621 Do all the above for Windows too.
*/ */
#include "m_pd.h" #include "m_pd.h"
@ -21,8 +23,9 @@ MP 20060618 make sure name is set up in comport_new (x->serial_device = test.ser
#include <commctrl.h> #include <commctrl.h>
#else #else
#include <sys/time.h> #include <sys/time.h>
#include <fcntl.h> #include <fcntl.h>
#include <termios.h> /* for TERMIO ioctl calls */ #include <sys/ioctl.h> /* for ioctl DTR */
#include <termios.h> /* for TERMIO ioctl calls */
#include <unistd.h> #include <unistd.h>
#include <glob.h> #include <glob.h>
#define HANDLE int #define HANDLE int
@ -42,7 +45,7 @@ typedef struct comport
#ifdef _WIN32 #ifdef _WIN32
DCB dcb; /* holds the comm pars */ DCB dcb; /* holds the comm pars */
DCB dcb_old; /* holds the comm pars */ DCB dcb_old; /* holds the comm pars */
COMMTIMEOUTS old_timeouts; COMMTIMEOUTS old_timeouts;
#else #else
struct termios oldcom_termio; /* save the old com config */ struct termios oldcom_termio; /* save the old com config */
struct termios com_termio; /* for the new com config */ struct termios com_termio; /* for the new com config */
@ -50,6 +53,9 @@ typedef struct comport
t_symbol *serial_device; t_symbol *serial_device;
char serial_device_name[FILENAME_MAX]; char serial_device_name[FILENAME_MAX];
short comport; /* holds the comport # */ short comport; /* holds the comport # */
short last_comport; /* the last comport that was output on x_status_outlet */
short last_dsr;/* last dsr input state */
short last_cts;/* last cts input state */
t_float baud; /* holds the current baud rate */ t_float baud; /* holds the current baud rate */
short rxerrors; /* holds the rx line errors */ short rxerrors; /* holds the rx line errors */
t_clock *x_clock; t_clock *x_clock;
@ -58,6 +64,8 @@ typedef struct comport
int verbose; int verbose;
t_outlet *x_data_outlet; t_outlet *x_data_outlet;
t_outlet *x_status_outlet; t_outlet *x_status_outlet;
t_outlet *x_dsr_outlet;
t_outlet *x_cts_outlet;
} t_comport; } t_comport;
#ifndef TRUE #ifndef TRUE
@ -80,8 +88,8 @@ typedef struct comport
#define COMPORT_MAX 99 #define COMPORT_MAX 99
#ifdef _WIN32 #ifdef _WIN32
static long baudspeedbittable[] = static long baudspeedbittable[] =
{ {
CBR_256000, CBR_256000,
CBR_128000, CBR_128000,
CBR_115200, CBR_115200,
@ -97,11 +105,11 @@ static long baudspeedbittable[] =
CBR_600, CBR_600,
CBR_300, CBR_300,
CBR_110 CBR_110
}; };
#else /* _WIN32 */ #else /* _WIN32 */
#ifdef IRIX #ifdef IRIX
#define OPENPARAMS (O_RDWR|O_NDELAY|O_NOCTTY) #define OPENPARAMS (O_RDWR|O_NDELAY|O_NOCTTY)
#define TIONREAD FIONREAD /* re map the IOCTL function */ #define TIONREAD FIONREAD /* re map the IOCTL function */
#define BAUDRATE_256000 -1 #define BAUDRATE_256000 -1
@ -123,8 +131,8 @@ static long baudspeedbittable[] =
#endif /* else IRIX */ #endif /* else IRIX */
static static
short baudspeedbittable[] = short baudspeedbittable[] =
{ {
BAUDRATE_256000, /* CPU SPECIFIC */ BAUDRATE_256000, /* CPU SPECIFIC */
BAUDRATE_128000, /* CPU SPECIFIC */ BAUDRATE_128000, /* CPU SPECIFIC */
BAUDRATE_115200, /* CPU SPECIFIC */ BAUDRATE_115200, /* CPU SPECIFIC */
@ -140,7 +148,7 @@ short baudspeedbittable[] =
B600, B600,
B300, B300,
B110 B110
}; };
struct timeval null_tv; struct timeval null_tv;
@ -148,8 +156,8 @@ struct timeval null_tv;
#define BAUDRATETABLE_LEN 15 #define BAUDRATETABLE_LEN 15
static long baudratetable[] = static long baudratetable[] =
{ {
256000L, 256000L,
128000L, 128000L,
115200L, 115200L,
@ -169,14 +177,14 @@ static long baudratetable[] =
t_class *comport_class; t_class *comport_class;
/* --------- sys independend serial setup helpers ---------------- */ /* --------- sys independent serial setup helpers ---------------- */
static long get_baud_ratebits(t_float *baud) static long get_baud_ratebits(t_float *baud)
{ {
int i = 0; int i = 0;
while(i < BAUDRATETABLE_LEN && baudratetable[i] > *baud) i++; while(i < BAUDRATETABLE_LEN && baudratetable[i] > *baud) i++;
/* nearest Baudrate finding */ /* nearest Baudrate finding */
if(i==BAUDRATETABLE_LEN || baudspeedbittable[i] < 0) if(i==BAUDRATETABLE_LEN || baudspeedbittable[i] < 0)
{ {
@ -189,7 +197,7 @@ static long get_baud_ratebits(t_float *baud)
} }
/* ------------ sys dependend serial setup helpers ---------------- */ /* ------------ sys dependent serial setup helpers ---------------- */
/* --------------------- NT ------------------------------------ */ /* --------------------- NT ------------------------------------ */
@ -261,11 +269,37 @@ static int set_ctsrts(t_comport *x, int nr)
return 0; return 0;
} }
static int set_dtr(t_comport *x, int nr)
{
HANDLE fd = x->comhandle;
BOOL status;
DWORD dwFunc = (nr==0)?CLRDTR:SETDTR;
if (fd == INVALID_HANDLE_VALUE) return -1;
status = EscapeCommFunction(fd, dwFunc);
if (status != 0) return nr;
return -1; /* didn't work, GetLastError tells why */
}
static int set_rts(t_comport *x, int nr)
{
HANDLE fd = x->comhandle;
BOOL status;
DWORD dwFunc = (nr==0)?CLRRTS:SETRTS;
if (fd == INVALID_HANDLE_VALUE) return -1;
status = EscapeCommFunction(fd, dwFunc);
if (status != 0) return nr;
return -1; /* didn't work, GetLastError tells why */
}
static int set_xonxoff(t_comport *x, int nr) static int set_xonxoff(t_comport *x, int nr)
{ {
/* x->dcb.fTXContinueOnXoff = FALSE; XOFF continues Tx */ /* x->dcb.fTXContinueOnXoff = FALSE; XOFF continues Tx */
if(nr == 1) if(nr == 1)
{ {
x->dcb.fOutX = TRUE; /* XON/XOFF out flow control */ x->dcb.fOutX = TRUE; /* XON/XOFF out flow control */
x->dcb.fInX = TRUE; /* XON/XOFF in flow control */ x->dcb.fInX = TRUE; /* XON/XOFF in flow control */
return 1; return 1;
@ -291,17 +325,17 @@ static HANDLE open_serial(unsigned int com_num, t_comport *x)
if(com_num < 1 || com_num >= COMPORT_MAX) if(com_num < 1 || com_num >= COMPORT_MAX)
{ {
post("comport open %d, baud %d not valid (args: [portnum] [baud])",com_num,*baud); post("comport number %d out of range (0-%d)", com_num, COMPORT_MAX);
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
sprintf(buffer, "%s%d", x->serial_device_name, com_num); sprintf(buffer, "%s%d", x->serial_device_name, com_num);
x->serial_device = gensym(buffer); x->serial_device = gensym(buffer);
post("Opening %s",x->serial_device->s_name); post("Opening %s",x->serial_device->s_name);
fd = CreateFile( x->serial_device->s_name, fd = CreateFile( x->serial_device->s_name,
GENERIC_READ | GENERIC_WRITE, GENERIC_READ | GENERIC_WRITE,
0, 0,
0, 0,
OPEN_EXISTING, OPEN_EXISTING,
FILE_FLAG_OVERLAPPED, FILE_FLAG_OVERLAPPED,
0); 0);
@ -318,9 +352,9 @@ static HANDLE open_serial(unsigned int com_num, t_comport *x)
if (!GetCommState(fd, &(x->dcb_old))) if (!GetCommState(fd, &(x->dcb_old)))
{ {
post("** ERROR ** could not get old dcb of device %s\n", post("** ERROR ** could not get old dcb of device %s\n",
x->serial_device->s_name); x->serial_device->s_name);
CloseHandle(fd); CloseHandle(fd);
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
@ -328,10 +362,10 @@ static HANDLE open_serial(unsigned int com_num, t_comport *x)
if (!GetCommState(fd, &(x->dcb))) if (!GetCommState(fd, &(x->dcb)))
{ {
post("** ERROR ** could not get new dcb of device %s\n", post("** ERROR ** could not get new dcb of device %s\n",
x->serial_device->s_name); x->serial_device->s_name);
CloseHandle(fd); CloseHandle(fd);
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
@ -366,11 +400,11 @@ static HANDLE open_serial(unsigned int com_num, t_comport *x)
post("[comport] opened serial line device %d (%s)\n", post("[comport] opened serial line device %d (%s)\n",
com_num,x->serial_device->s_name); com_num,x->serial_device->s_name);
} }
else else
{ {
error("[comport] ** ERROR ** could not set params to control dcb of device %s\n", error("[comport] ** ERROR ** could not set params to control dcb of device %s\n",
x->serial_device->s_name); x->serial_device->s_name);
CloseHandle(fd); CloseHandle(fd);
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
@ -380,7 +414,7 @@ static HANDLE open_serial(unsigned int com_num, t_comport *x)
} }
/* setting new timeouts for read to immediately return */ /* setting new timeouts for read to immediately return */
timeouts.ReadIntervalTimeout = MAXDWORD; timeouts.ReadIntervalTimeout = MAXDWORD;
timeouts.ReadTotalTimeoutMultiplier = 0; timeouts.ReadTotalTimeoutMultiplier = 0;
timeouts.ReadTotalTimeoutConstant = 0; timeouts.ReadTotalTimeoutConstant = 0;
timeouts.WriteTotalTimeoutMultiplier = 0; timeouts.WriteTotalTimeoutMultiplier = 0;
@ -388,13 +422,11 @@ static HANDLE open_serial(unsigned int com_num, t_comport *x)
if (!SetCommTimeouts(fd, &timeouts)) if (!SetCommTimeouts(fd, &timeouts))
{ {
post("Couldnt set timeouts for serial device"); post("Couldn't set timeouts for serial device");
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
// this causes a segfault... WHY?!? x->comport = com_num;/* output on next tick */
// outlet_float(x->x_status_outlet, (t_float)com_num);
return fd; return fd;
} }
@ -404,19 +436,16 @@ static HANDLE close_serial(t_comport *x)
{ {
if (!SetCommState(x->comhandle, &(x->dcb_old))) if (!SetCommState(x->comhandle, &(x->dcb_old)))
{ {
post("[comport] ** ERROR ** could not reset params to DCB of device %s\n", post("[comport] ** ERROR ** couldn't reset params to DCB of device %s\n",
x->serial_device->s_name); x->serial_device->s_name);
} }
if (!SetCommTimeouts(x->comhandle, &(x->old_timeouts))) if (!SetCommTimeouts(x->comhandle, &(x->old_timeouts)))
{ {
post("[comport] Couldn't reset old_timeouts for serial device"); post("[comport] Couldn't reset old_timeouts for serial device");
} }
CloseHandle(x->comhandle); CloseHandle(x->comhandle);
// for some reason, this causes a segfault... post("[comport] closed %s",x->serial_device->s_name);
// post("[comport] closed %s",x->serial_device->s_name);
} }
// this causes a segfault... WHY?!?
// outlet_float(x->x_status_outlet, 0);
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
@ -428,7 +457,7 @@ static int write_serial(t_comport *x, unsigned char serial_byte)
DWORD dwToWrite = 1; DWORD dwToWrite = 1;
DWORD dwErr; DWORD dwErr;
char cErr[100]; char cErr[100];
osWrite.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); osWrite.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (osWrite.hEvent == NULL) if (osWrite.hEvent == NULL)
{ {
@ -436,15 +465,15 @@ static int write_serial(t_comport *x, unsigned char serial_byte)
return 0; return 0;
} }
if (!WriteFile(x->comhandle, &serial_byte, dwToWrite, &dwWritten, &osWrite)) if (!WriteFile(x->comhandle, &serial_byte, dwToWrite, &dwWritten, &osWrite))
{ {
dwErr = GetLastError(); dwErr = GetLastError();
if (dwErr != ERROR_IO_PENDING) if (dwErr != ERROR_IO_PENDING)
{ {
sprintf(cErr, "WriteFile error: %d", (int)dwErr); sprintf(cErr, "WriteFile error: %d", (int)dwErr);
post(cErr); post(cErr);
return 0; return 0;
} }
} }
CloseHandle(osWrite.hEvent); CloseHandle(osWrite.hEvent);
return 1; return 1;
@ -476,7 +505,7 @@ static float set_bits(t_comport *x, int nr)
case 5: tio->c_cflag |= CS5; return 5; case 5: tio->c_cflag |= CS5; return 5;
case 6: tio->c_cflag |= CS6; return 6; case 6: tio->c_cflag |= CS6; return 6;
case 7: tio->c_cflag |= CS7; return 7; case 7: tio->c_cflag |= CS7; return 7;
default: tio->c_cflag |= CS8; default: tio->c_cflag |= CS8;
} }
return 8; return 8;
} }
@ -529,13 +558,45 @@ static int set_ctsrts(t_comport *x, int nr)
return 0; return 0;
} }
static int set_dtr(t_comport *x, int nr)
{
int fd = x->comhandle;
int status;
if (fd == INVALID_HANDLE_VALUE) return -1;
ioctl(fd, TIOCMGET, &status);
if (nr == 0)
status &= ~TIOCM_DTR;
else
status |= TIOCM_DTR;
ioctl(fd, TIOCMSET, &status);
return (nr !=0);
}
static int set_rts(t_comport *x, int nr)
{
int fd = x->comhandle;
int status;
if (fd == INVALID_HANDLE_VALUE) return -1;
ioctl(fd, TIOCMGET, &status);
if (nr == 0)
status &= ~TIOCM_RTS;
else
status |= TIOCM_RTS;
ioctl(fd, TIOCMSET, &status);
return (nr !=0);
}
static int set_xonxoff(t_comport *x, int nr) static int set_xonxoff(t_comport *x, int nr)
{ {
struct termios *tio = &(x->com_termio); struct termios *tio = &(x->com_termio);
if(nr == 1) if(nr == 1)
{ {
tio->c_iflag |= (IXON | IXOFF | IXANY); tio->c_iflag |= (IXON | IXOFF | IXANY);
return 1; return 1;
} }
@ -551,27 +612,27 @@ static int open_serial(unsigned int com_num, t_comport *x)
float *baud = &(x->baud); float *baud = &(x->baud);
glob_t glob_buffer; glob_t glob_buffer;
/* if com_num == 9999, use device name directly, else try port # */ /* if com_num == 9999, use device name directly, else try port # */
if(com_num != 9999) if(com_num != 9999)
{ {
if(com_num >= COMPORT_MAX) if(com_num >= COMPORT_MAX)
{ {
post("[comport] ** WARNING ** port %d not valid, must be between 0 and %d", post("[comport] ** WARNING ** port %d not valid, must be between 0 and %d",
com_num, COMPORT_MAX - 1); com_num, COMPORT_MAX - 1);
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
// post("[comport] globbing %s",x->serial_device_name); /* post("[comport] globbing %s",x->serial_device_name);*/
/* get the device path based on the port# and the glob pattern */ /* get the device path based on the port# and the glob pattern */
switch( glob( x->serial_device_name, 0, NULL, &glob_buffer ) ) switch( glob( x->serial_device_name, 0, NULL, &glob_buffer ) )
{ {
case GLOB_NOSPACE: case GLOB_NOSPACE:
error("[comport] out of memory for \"%s\"",x->serial_device_name); error("[comport] out of memory for \"%s\"",x->serial_device_name);
break; break;
case GLOB_ABORTED: case GLOB_ABORTED:
error("[comport] aborted \"%s\"",x->serial_device_name); error("[comport] aborted \"%s\"",x->serial_device_name);
break; break;
case GLOB_NOMATCH: case GLOB_NOMATCH:
error("[comport] no serial devices found for \"%s\"",x->serial_device_name); error("[comport] no serial devices found for \"%s\"",x->serial_device_name);
break; break;
} }
if(com_num < glob_buffer.gl_pathc) if(com_num < glob_buffer.gl_pathc)
@ -592,10 +653,10 @@ static int open_serial(unsigned int com_num, t_comport *x)
x->serial_device->s_name,errno,strerror(errno)); x->serial_device->s_name,errno,strerror(errno));
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
/* set no wait on any operation */ /* set no wait on any operation */
fcntl(fd, F_SETFL, FNDELAY); fcntl(fd, F_SETFL, FNDELAY);
/* Save the Current Port Configuration */ /* Save the Current Port Configuration */
if(tcgetattr(fd, old) == -1 || tcgetattr(fd, new) == -1) if(tcgetattr(fd, old) == -1 || tcgetattr(fd, new) == -1)
{ {
@ -604,7 +665,7 @@ static int open_serial(unsigned int com_num, t_comport *x)
close(fd); close(fd);
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
/* Setup the new port configuration...NON-CANONICAL INPUT MODE /* Setup the new port configuration...NON-CANONICAL INPUT MODE
.. as defined in termios.h */ .. as defined in termios.h */
@ -617,14 +678,14 @@ static int open_serial(unsigned int com_num, t_comport *x)
/* no post processing */ /* no post processing */
new->c_oflag &= ~OPOST; new->c_oflag &= ~OPOST;
/* setup to return after 0 seconds /* setup to return after 0 seconds
..if no characters are received ..if no characters are received
TIME units are assumed to be 0.1 secs */ TIME units are assumed to be 0.1 secs */
/* not needed anymore ??? in new termios in linux /* not needed anymore ??? in new termios in linux
new->c_cc[VMIN] = 0; new->c_cc[VMIN] = 0;
new->c_cc[VTIME] = 0; new->c_cc[VTIME] = 0;
*/ */
/* defaults, see input */ /* defaults, see input */
set_bits(x,8); /* CS8 */ set_bits(x,8); /* CS8 */
@ -632,21 +693,23 @@ static int open_serial(unsigned int com_num, t_comport *x)
set_ctsrts(x,0); /* ~CRTSCTS;*/ set_ctsrts(x,0); /* ~CRTSCTS;*/
set_xonxoff(x,0); /* (IXON | IXOFF | IXANY) */ set_xonxoff(x,0); /* (IXON | IXOFF | IXANY) */
set_baudrate(x,*baud); set_baudrate(x,*baud);
if(tcsetattr(fd, TCSAFLUSH, new) != -1) if(tcsetattr(fd, TCSAFLUSH, new) != -1)
{ {
post("[comport] opened serial line device %d (%s)\n", post("[comport] opened serial line device %d (%s)\n",
com_num,x->serial_device->s_name); com_num,x->serial_device->s_name);
// this causes a segfault... WHY?!?
// outlet_float(x->x_status_outlet, (t_float)com_num);
} }
else else
{ {
error("[comport] ** ERROR ** could not set params to ioctl of device %s\n", error("[comport] ** ERROR ** could not set params to ioctl of device %s\n",
x->serial_device->s_name); x->serial_device->s_name);
close(fd); close(fd);
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
x->comport = com_num; /* output at next comport_tick */
x->last_comport = 777; /* a wrong number to force ouput at next comport_tick */
x->last_dsr = -1; /* a wrong number so state will be output at next comport_tick */
x->last_cts = -1; /* a wrong number so state will be output at next comport_tick */
return fd; return fd;
} }
@ -659,10 +722,7 @@ static int close_serial(t_comport *x)
{ {
tcsetattr(fd, TCSANOW, tios); tcsetattr(fd, TCSANOW, tios);
close(fd); close(fd);
// for some reason, this causes a segfault... post("[comport] closed %s",x->serial_device->s_name);
// post("[comport] closed %s",x->serial_device->s_name);
// this causes a segfault... WHY?!?
// outlet_float(x->x_status_outlet, 0);
} }
return INVALID_HANDLE_VALUE; return INVALID_HANDLE_VALUE;
} }
@ -676,15 +736,17 @@ static int set_serial(t_comport *x)
static int write_serial(t_comport *x, unsigned char serial_byte) static int write_serial(t_comport *x, unsigned char serial_byte)
{ {
return write(x->comhandle,(char *) &serial_byte,1); int result = write(x->comhandle,(char *) &serial_byte,1);
if (result != 1)
post ("[comport] write returned %d, errno is %d", result, errno);
return result;
/* flush pending I/O chars */ /* flush pending I/O chars */
/* but nowadays discards them ;-( /* but nowadays discards them ;-(
else else
{ {
ioctl(x->comhandle,TCFLSH,TCOFLUSH); ioctl(x->comhandle,TCFLSH,TCOFLUSH);
} }
*/ */
} }
#endif /* else NT */ #endif /* else NT */
@ -698,13 +760,54 @@ static void comport_pollintervall(t_comport *x, t_floatarg g)
static void comport_tick(t_comport *x) static void comport_tick(t_comport *x)
{ {
int err; int err;
HANDLE fd = x->comhandle; HANDLE fd = x->comhandle;
short newdsr, newcts;
#ifdef _WIN32
{
DWORD modemStat;
/* get the DSR input state and if it's changed, output it */
BOOL status = GetCommModemStatus( fd, &modemStat);
if (status)
{
newdsr = ((modemStat&MS_DSR_ON)!=0);/* read the DSR input line */
newcts = ((modemStat&MS_CTS_ON)!=0);/* read the CTS input line */
}
else
{
;/* call GetLastError, only once so as not to hang pd */
}
}
#else
{
int status;/*dsr outlet*/
/* get the DSR input state and if it's changed, output it */
ioctl(fd, TIOCMGET, &status);/*dsr outlet*/
newdsr = ((status&TIOCM_LE)!=0);/* read the DSR input line */
newcts = ((status&TIOCM_CTS)!=0);/* read the CTS input line */
}
#endif
if (newdsr != x->last_dsr)
{
x->last_dsr = newdsr;
if(x->x_dsr_outlet!=NULL) outlet_float(x->x_dsr_outlet, (float)(x->last_dsr));/*dsr outlet*/
}
if (newcts != x->last_cts)
{
x->last_cts = newcts;
if(x->x_cts_outlet!=NULL) outlet_float(x->x_cts_outlet, (float)(x->last_cts));/*cts outlet*/
}
x->x_hit = 0; x->x_hit = 0;
if(x->last_comport != x->comport)
{
x->last_comport = x->comport;
if (x->x_status_outlet != NULL) outlet_float(x->x_status_outlet, (float)x->comport);
}
if(fd == INVALID_HANDLE_VALUE) return; if(fd == INVALID_HANDLE_VALUE) return;
/* while there are bytes, read them and send them out, ignore errors */ /* while there are bytes, read them and send them out, ignore errors */
#ifdef _WIN32 #ifdef _WIN32
{ {
@ -712,14 +815,14 @@ static void comport_tick(t_comport *x)
DWORD dwRead; DWORD dwRead;
OVERLAPPED osReader = {0}; OVERLAPPED osReader = {0};
DWORD dwX; DWORD dwX;
err = 0; err = 0;
osReader.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); osReader.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if(ReadFile(x->comhandle, serial_byte, 1000, &dwRead, &osReader)) if(ReadFile(x->comhandle, serial_byte, 1000, &dwRead, &osReader))
{ {
if(dwRead > 0) if(dwRead > 0)
{ {
for(dwX=0;dwX<dwRead;dwX++) for(dwX=0;dwX<dwRead;dwX++)
{ {
outlet_float(x->x_data_outlet, (t_float) serial_byte[dwX]); outlet_float(x->x_data_outlet, (t_float) serial_byte[dwX]);
@ -735,19 +838,19 @@ static void comport_tick(t_comport *x)
#else #else
{ {
unsigned char serial_byte; unsigned char serial_byte;
fd_set com_rfds; fd_set com_rfds;
FD_ZERO(&com_rfds); FD_ZERO(&com_rfds);
FD_SET(fd,&com_rfds); FD_SET(fd,&com_rfds);
while((err=select(fd+1,&com_rfds,NULL,NULL,&null_tv)) > 0) while((err=select(fd+1,&com_rfds,NULL,NULL,&null_tv)) > 0)
{ {
err = read(fd,(char *) &serial_byte,1); err = read(fd,(char *) &serial_byte,1);
/* while( (err = read(fd,(char *) &serial_byte,1)) > 0){ */ /* while( (err = read(fd,(char *) &serial_byte,1)) > 0){ */
outlet_float(x->x_data_outlet, (t_float) serial_byte); outlet_float(x->x_data_outlet, (t_float) serial_byte);
} }
} }
#endif #endif
if(err < 0) if(err < 0)
{ /* if a read error detected */ { /* if a read error detected */
@ -768,7 +871,7 @@ static void comport_float(t_comport *x, t_float f)
} }
} }
static void *comport_new(t_floatarg com_num, t_floatarg fbaud) static void *comport_new(t_floatarg com_num, t_floatarg fbaud)
{ {
t_comport test; t_comport test;
t_comport *x; t_comport *x;
@ -791,16 +894,18 @@ static void *comport_new(t_floatarg com_num, t_floatarg fbaud)
/* Open the Comport for RD and WR and get a handle */ /* Open the Comport for RD and WR and get a handle */
strncpy(test.serial_device_name,serial_device_name,strlen(serial_device_name)+1); strncpy(test.serial_device_name, serial_device_name, strlen(serial_device_name)+1);
test.baud = fbaud; test.baud = fbaud;
fd = open_serial((unsigned int)com_num,&test); fd = open_serial((unsigned int)com_num, &test);
/* Now nothing really bad could happen so we create the class */ /* Now nothing really bad could happen so we create the class */
x = (t_comport *)pd_new(comport_class); x = (t_comport *)pd_new(comport_class);
x->comport = (short)com_num; x->comport = test.comport;/* com_num */
x->last_comport = 777; /* no known comport to force output at comport_tick */
strncpy(x->serial_device_name,serial_device_name,strlen(serial_device_name)+1); strncpy(x->serial_device_name,serial_device_name,strlen(serial_device_name)+1);
x->serial_device = test.serial_device; /* MP: we need this so 'help' doesn't crash */ x->serial_device = test.serial_device; /* we need this so 'help' doesn't crash */
x->baud = test.baud; x->baud = test.baud;
x->comhandle = fd; /* holds the comport handle */ x->comhandle = fd; /* holds the comport handle */
@ -814,18 +919,19 @@ static void *comport_new(t_floatarg com_num, t_floatarg fbaud)
#ifdef _WIN32 #ifdef _WIN32
memcpy(&(x->dcb_old), &(test.dcb_old), sizeof(DCB)); /* save the old com config */ memcpy(&(x->dcb_old), &(test.dcb_old), sizeof(DCB)); /* save the old com config */
memcpy(&(x->dcb), &(test.dcb), sizeof(DCB)); /* for the new com config */ memcpy(&(x->dcb), &(test.dcb), sizeof(DCB)); /* for the new com config */
#else #else
/* save the old com and new com config */ /* save the old com and new com config */
bcopy(&(test.oldcom_termio),&(x->oldcom_termio),sizeof(struct termios)); bcopy(&(test.oldcom_termio),&(x->oldcom_termio),sizeof(struct termios));
bcopy(&(test.com_termio),&(x->com_termio),sizeof(struct termios)); bcopy(&(test.com_termio),&(x->com_termio),sizeof(struct termios));
#endif #endif
} }
x->rxerrors = 0; /* holds the rx line errors */ x->rxerrors = 0; /* holds the rx line errors */
x->x_data_outlet = (t_outlet *)outlet_new(&x->x_obj, &s_float); x->x_data_outlet = outlet_new(&x->x_obj, &s_float);
// for some unknown reason, outputting on this outlet causes segfaults... x->x_status_outlet = outlet_new(&x->x_obj, &s_float);
// x->x_status_outlet = (t_outlet *)outlet_new(&x->x_obj, &s_float); x->x_dsr_outlet = outlet_new(&x->x_obj, &s_float);
x->x_cts_outlet = outlet_new(&x->x_obj, &s_float);
x->x_hit = 0; x->x_hit = 0;
x->x_deltime = 1; x->x_deltime = 1;
@ -931,6 +1037,36 @@ static void comport_rtscts(t_comport *x,t_floatarg f)
post("[comport] set rts-cts of %s to %f\n",x->serial_device->s_name,f); post("[comport] set rts-cts of %s to %f\n",x->serial_device->s_name,f);
} }
static void comport_dtr(t_comport *x,t_floatarg f)
{
f = set_dtr(x,f);
if(x->comhandle == INVALID_HANDLE_VALUE)return;
if(f < 0)
{
error("[comport] ** ERROR ** could not set dtr of device %s\n",
x->serial_device->s_name);
}
else if(x->verbose > 0)
post("[comport] set dtr of %s to %f\n",x->serial_device->s_name,f);
}
static void comport_rts(t_comport *x,t_floatarg f)
{
f = set_rts(x,f);
if(x->comhandle == INVALID_HANDLE_VALUE)return;
if(f < 0)
{
error("[comport] ** ERROR ** could not set rts of device %s\n",
x->serial_device->s_name);
}
else if(x->verbose > 0)
post("[comport] set rts of %s to %f\n",x->serial_device->s_name,f);
}
static void comport_xonxoff(t_comport *x,t_floatarg f) static void comport_xonxoff(t_comport *x,t_floatarg f)
{ {
f = set_xonxoff(x,f); f = set_xonxoff(x,f);
@ -951,6 +1087,9 @@ static void comport_close(t_comport *x)
clock_unset(x->x_clock); clock_unset(x->x_clock);
x->x_hit = 1; x->x_hit = 1;
x->comhandle = close_serial(x); x->comhandle = close_serial(x);
x->comport = -1; /* none */
if (x->x_status_outlet != NULL) outlet_float(x->x_status_outlet, (float)x->comport);
x->last_comport = x->comport;
} }
static void comport_open(t_comport *x, t_floatarg f) static void comport_open(t_comport *x, t_floatarg f)
@ -963,14 +1102,14 @@ static void comport_open(t_comport *x, t_floatarg f)
clock_delay(x->x_clock, x->x_deltime); clock_delay(x->x_clock, x->x_deltime);
} }
/* /*
dangerous but if you really have some stupid devicename ... dangerous but if you really have some stupid devicename ...
you can open any file on systems if suid is set on pd be careful you can open any file on systems if suid is set on pd be careful
*/ */
static void comport_devicename(t_comport *x, t_symbol *s) static void comport_devicename(t_comport *x, t_symbol *s)
{ {
x->serial_device = s; x->serial_device = s;
x->comhandle = open_serial(9999,x); x->comhandle = open_serial(9999,x);
} }
@ -1014,6 +1153,8 @@ static void comport_help(t_comport *x)
" rtscts <0|1> ... set rts/cts off|on\n" " rtscts <0|1> ... set rts/cts off|on\n"
" parity <0|1> ... set parity off|on\n" " parity <0|1> ... set parity off|on\n"
" xonxoff <0|1> ... set xon/xoff off|on\n" " xonxoff <0|1> ... set xon/xoff off|on\n"
" dtr <0|1> ... set dtr off|on\n"
" rts <0|1> ... set rts off|on\n"
" close ... close device\n" " close ... close device\n"
" open <num> ... open device number num\n" " open <num> ... open device number num\n"
" devicename <d> ... set device name to s (eg. /dev/ttyS8)\n" " devicename <d> ... set device name to s (eg. /dev/ttyS8)\n"
@ -1024,25 +1165,24 @@ static void comport_help(t_comport *x)
} }
/* ---------------- SETUP OBJECTS ------------------ */ /* ---------------- SETUP OBJECTS ------------------ */
#ifdef _WIN32
__declspec(dllexport)
#endif
void comport_setup(void) void comport_setup(void)
{ {
comport_class = class_new(gensym("comport"), (t_newmethod)comport_new, comport_class = class_new(gensym("comport"), (t_newmethod)comport_new,
(t_method)comport_free, sizeof(t_comport), (t_method)comport_free, sizeof(t_comport),
0, A_DEFFLOAT, A_DEFFLOAT, 0); 0, A_DEFFLOAT, A_DEFFLOAT, 0);
class_addfloat(comport_class, (t_method)comport_float); class_addfloat(comport_class, (t_method)comport_float);
/* /*
class_addbang(comport_class, comport_bang class_addbang(comport_class, comport_bang
*/ */
class_addmethod(comport_class, (t_method)comport_baud, gensym("baud"),A_FLOAT, 0); class_addmethod(comport_class, (t_method)comport_baud, gensym("baud"),A_FLOAT, 0);
class_addmethod(comport_class, (t_method)comport_bits, gensym("bits"), A_FLOAT, 0); class_addmethod(comport_class, (t_method)comport_bits, gensym("bits"), A_FLOAT, 0);
class_addmethod(comport_class, (t_method)comport_stopbit, gensym("stopbit"), A_FLOAT, 0); class_addmethod(comport_class, (t_method)comport_stopbit, gensym("stopbit"), A_FLOAT, 0);
class_addmethod(comport_class, (t_method)comport_rtscts, gensym("rtscts"), A_FLOAT, 0); class_addmethod(comport_class, (t_method)comport_rtscts, gensym("rtscts"), A_FLOAT, 0);
class_addmethod(comport_class, (t_method)comport_dtr, gensym("dtr"), A_FLOAT, 0);
class_addmethod(comport_class, (t_method)comport_rts, gensym("rts"), A_FLOAT, 0);
class_addmethod(comport_class, (t_method)comport_parity, gensym("parity"), A_FLOAT, 0); class_addmethod(comport_class, (t_method)comport_parity, gensym("parity"), A_FLOAT, 0);
class_addmethod(comport_class, (t_method)comport_xonxoff, gensym("xonxoff"), A_FLOAT, 0); class_addmethod(comport_class, (t_method)comport_xonxoff, gensym("xonxoff"), A_FLOAT, 0);
class_addmethod(comport_class, (t_method)comport_close, gensym("close"), 0); class_addmethod(comport_class, (t_method)comport_close, gensym("close"), 0);