void EIO_Open(uv_work_t* req) {
OpenBaton* data = static_cast<OpenBaton*>(req->data);
UnixPlatformOptions* platformOptions = static_cast<UnixPlatformOptions*>(data->platformOptions);
int baudRate = ToBaudConstant(data->baudRate);
// #if not ( defined(MAC_OS_X_VERSION_10_4) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_4) )
// if(baudRate == -1) {
// snprintf(data->errorString, sizeof(data->errorString), "Invalid baud rate setting %d", data->baudRate);
// return;
// }
// #endif
int dataBits = ToDataBitsConstant(data->dataBits);
if(dataBits == -1) {
snprintf(data->errorString, sizeof(data->errorString), "Invalid data bits setting %d", data->dataBits);
return;
}
int flags = (O_RDWR | O_NOCTTY | O_NONBLOCK | O_CLOEXEC | O_SYNC);
int fd = open(data->path, flags);
if (fd == -1) {
snprintf(data->errorString, sizeof(data->errorString), "Cannot open %s", data->path);
return;
}
// struct sigaction saio;
// saio.sa_handler = sigio_handler;
// sigemptyset(&saio.sa_mask);
// saio.sa_flags = 0;
// sigaction(SIGIO, &saio, NULL);
// //all process to receive SIGIO
// fcntl(fd, F_SETOWN, getpid());
// int flflags = fcntl(fd, F_GETFL);
// fcntl(fd, F_SETFL, flflags | FNONBLOCK);
struct termios options;
// Set baud and other configuration.
tcgetattr(fd, &options);
// Removing check for valid BaudRates due to ticket: #140
// #if not ( defined(MAC_OS_X_VERSION_10_4) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_4) )
// Specify the baud rate
// On linux you can alter the meaning of B38400 to mean a custom baudrate...
#if defined(__linux__) && defined(ASYNC_SPD_CUST)
if (baudRate == -1) {
struct serial_struct serinfo;
serinfo.reserved_char[0] = 0;
if (ioctl(fd, TIOCGSERIAL, &serinfo) != -1) {
serinfo.flags &= ~ASYNC_SPD_MASK;
serinfo.flags |= ASYNC_SPD_CUST;
serinfo.custom_divisor = (serinfo.baud_base + (data->baudRate / 2)) / data->baudRate;
if (serinfo.custom_divisor < 1)
serinfo.custom_divisor = 1;
ioctl(fd, TIOCSSERIAL, &serinfo);
ioctl(fd, TIOCGSERIAL, &serinfo);
// if (serinfo.custom_divisor * rate != serinfo.baud_base) {
// warnx("actual baudrate is %d / %d = %f",
// serinfo.baud_base, serinfo.custom_divisor,
// (float)serinfo.baud_base / serinfo.custom_divisor);
// }
}
// Now we use "B38400" to trigger the special baud rate.
baudRate = B38400;
}
#endif
if (baudRate != -1) {
cfsetispeed(&options, baudRate);
cfsetospeed(&options, baudRate);
}
// Removing check for valid BaudRates due to ticket: #140
// #endif
/*
IGNPAR : ignore bytes with parity errors
*/
options.c_iflag = IGNPAR;
/*
ICRNL : map CR to NL (otherwise a CR input on the other computer
will not terminate input)
*/
// Pulling this for now. It should be an option, however. -Giseburt
//options.c_iflag = ICRNL;
// otherwise make device raw (no other input processing)
// Specify data bits
options.c_cflag &= ~CSIZE;
options.c_cflag |= dataBits;
options.c_cflag &= ~(CRTSCTS);
if (data->rtscts) {
options.c_cflag |= CRTSCTS;
// evaluate specific flow control options
}
options.c_iflag &= ~(IXON | IXOFF | IXANY);
if (data->xon) {
options.c_iflag |= IXON;
}
if (data->xoff) {
options.c_iflag |= IXOFF;
}
if (data->xany) {
options.c_iflag |= IXANY;
}
switch (data->parity)
{
case SERIALPORT_PARITY_NONE:
options.c_cflag &= ~PARENB;
// options.c_cflag &= ~CSTOPB;
// options.c_cflag &= ~CSIZE;
// options.c_cflag |= CS8;
break;
case SERIALPORT_PARITY_ODD:
options.c_cflag |= PARENB;
options.c_cflag |= PARODD;
// options.c_cflag &= ~CSTOPB;
// options.c_cflag &= ~CSIZE;
// options.c_cflag |= CS7;
break;
case SERIALPORT_PARITY_EVEN:
options.c_cflag |= PARENB;
options.c_cflag &= ~PARODD;
// options.c_cflag &= ~CSTOPB;
// options.c_cflag &= ~CSIZE;
// options.c_cflag |= CS7;
break;
default:
snprintf(data->errorString, sizeof(data->errorString), "Invalid parity setting %d", data->parity);
close(fd);
return;
}
switch(data->stopBits) {
case SERIALPORT_STOPBITS_ONE:
options.c_cflag &= ~CSTOPB;
break;
case SERIALPORT_STOPBITS_TWO:
options.c_cflag |= CSTOPB;
break;
default:
snprintf(data->errorString, sizeof(data->errorString), "Invalid stop bits setting %d", data->stopBits);
close(fd);
return;
}
options.c_cflag |= CLOCAL; //ignore status lines
options.c_cflag |= CREAD; //enable receiver
options.c_cflag |= HUPCL; //drop DTR (i.e. hangup) on close
// Raw output
options.c_oflag = 0;
// ICANON makes partial lines not readable. It should be otional.
// It works with ICRNL. -Giseburt
options.c_lflag = 0; //ICANON;
options.c_cc[VMIN]= platformOptions->vmin;
options.c_cc[VTIME]= platformOptions->vtime;
// removed this unneeded sleep.
// sleep(1);
tcflush(fd, TCIFLUSH);
tcsetattr(fd, TCSANOW, &options);
// On OS X, starting in Tiger, we can set a custom baud rate, as follows:
#if defined(MAC_OS_X_VERSION_10_4) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_4)
if (baudRate == -1) {
speed_t speed = data->baudRate;
if (ioctl(fd, IOSSIOSPEED, &speed) == -1) {
snprintf(data->errorString, sizeof(data->errorString), "Error %s calling ioctl( ..., IOSSIOSPEED, %ld )", strerror(errno), speed );
}
}
#endif
data->result = fd;
}
void EIO_Open(uv_work_t* req) {
OpenBaton* data = static_cast<OpenBaton*>(req->data);
#if not ( defined(MAC_OS_X_VERSION_10_4) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_4) )
int baudRate = ToBaudConstant(data->baudRate);
if(baudRate == -1) {
sprintf(data->errorString, "Invalid baud rate setting %d", data->baudRate);
return;
}
#endif
int dataBits = ToDataBitsConstant(data->dataBits);
if(dataBits == -1) {
sprintf(data->errorString, "Invalid data bits setting %d", data->dataBits);
return;
}
int flowControl = ToFlowControlConstant(data->flowControl);
if(flowControl == -1) {
sprintf(data->errorString, "Invalid flow control setting %d", data->flowControl);
return;
}
int flags = (O_RDWR | O_NOCTTY | O_NONBLOCK | O_NDELAY);
int fd = open(data->path, flags);
if (fd == -1) {
sprintf(data->errorString, "Cannot open %s", data->path);
return;
}
struct termios options;
struct sigaction saio;
saio.sa_handler = SIG_IGN;
sigemptyset(&saio.sa_mask);
saio.sa_flags = 0;
sigaction(SIGIO, &saio, NULL);
//all process to receive SIGIO
fcntl(fd, F_SETOWN, getpid());
fcntl(fd, F_SETFL, FASYNC);
// Set baud and other configuration.
tcgetattr(fd, &options);
#if not ( defined(MAC_OS_X_VERSION_10_4) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_4) )
// Specify the baud rate
cfsetispeed(&options, baudRate);
cfsetospeed(&options, baudRate);
#endif
// Specify data bits
options.c_cflag &= ~CSIZE;
options.c_cflag |= dataBits;
// Specify flow control
options.c_cflag &= ~flowControl;
options.c_cflag |= flowControl;
switch (data->parity)
{
case SERIALPORT_PARITY_NONE:
options.c_cflag &= ~PARENB;
options.c_cflag &= ~CSTOPB;
options.c_cflag &= ~CSIZE;
options.c_cflag |= CS8;
break;
case SERIALPORT_PARITY_ODD:
options.c_cflag |= PARENB;
options.c_cflag |= PARODD;
options.c_cflag &= ~CSTOPB;
options.c_cflag &= ~CSIZE;
options.c_cflag |= CS7;
break;
case SERIALPORT_PARITY_EVEN:
options.c_cflag |= PARENB;
options.c_cflag &= ~PARODD;
options.c_cflag &= ~CSTOPB;
options.c_cflag &= ~CSIZE;
options.c_cflag |= CS7;
break;
default:
sprintf(data->errorString, "Invalid parity setting %d", data->parity);
close(fd);
return;
}
switch(data->stopBits) {
case SERIALPORT_STOPBITS_ONE:
options.c_cflag &= ~CSTOPB;
break;
case SERIALPORT_STOPBITS_TWO:
options.c_cflag |= CSTOPB;
break;
default:
sprintf(data->errorString, "Invalid stop bits setting %d", data->stopBits);
close(fd);
return;
}
options.c_cflag |= CLOCAL; //ignore status lines
options.c_cflag |= CREAD; //enable receiver
options.c_cflag |= HUPCL; //drop DTR (i.e. hangup) on close
options.c_iflag = IGNPAR;
options.c_oflag = 0;
options.c_lflag = 0; //ICANON;
options.c_cc[VMIN]=1;
options.c_cc[VTIME]=0;
sleep(1);
tcflush(fd, TCIFLUSH);
tcsetattr(fd, TCSANOW, &options);
#if defined(MAC_OS_X_VERSION_10_4) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_4)
speed_t speed = data->baudRate;
if ( ioctl( fd, IOSSIOSPEED, &speed ) == -1 )
{
printf( "Error %d calling ioctl( ..., IOSSIOSPEED, ... )\n", errno );
}
#endif
data->result = fd;
}
int setup(int fd, OpenBaton *data) {
int dataBits = ToDataBitsConstant(data->dataBits);
if (-1 == dataBits) {
snprintf(data->errorString, sizeof(data->errorString),
"Invalid data bits setting %d", data->dataBits);
return -1;
}
// Snow Leopard doesn't have O_CLOEXEC
if (-1 == fcntl(fd, F_SETFD, FD_CLOEXEC)) {
snprintf(data->errorString, sizeof(data->errorString), "Error %s Cannot open %s", strerror(errno), data->path);
return -1;
}
// Get port configuration for modification
struct termios options;
tcgetattr(fd, &options);
// IGNPAR: ignore bytes with parity errors
options.c_iflag = IGNPAR;
// ICRNL: map CR to NL (otherwise a CR input on the other computer will not terminate input)
// Future potential option
// options.c_iflag = ICRNL;
// otherwise make device raw (no other input processing)
// Specify data bits
options.c_cflag &= ~CSIZE;
options.c_cflag |= dataBits;
options.c_cflag &= ~(CRTSCTS);
if (data->rtscts) {
options.c_cflag |= CRTSCTS;
// evaluate specific flow control options
}
options.c_iflag &= ~(IXON | IXOFF | IXANY);
if (data->xon) {
options.c_iflag |= IXON;
}
if (data->xoff) {
options.c_iflag |= IXOFF;
}
if (data->xany) {
options.c_iflag |= IXANY;
}
switch (data->parity) {
case SERIALPORT_PARITY_NONE:
options.c_cflag &= ~PARENB;
// options.c_cflag &= ~CSTOPB;
// options.c_cflag &= ~CSIZE;
// options.c_cflag |= CS8;
break;
case SERIALPORT_PARITY_ODD:
options.c_cflag |= PARENB;
options.c_cflag |= PARODD;
// options.c_cflag &= ~CSTOPB;
// options.c_cflag &= ~CSIZE;
// options.c_cflag |= CS7;
break;
case SERIALPORT_PARITY_EVEN:
options.c_cflag |= PARENB;
options.c_cflag &= ~PARODD;
// options.c_cflag &= ~CSTOPB;
// options.c_cflag &= ~CSIZE;
// options.c_cflag |= CS7;
break;
default:
snprintf(data->errorString, sizeof(data->errorString), "Invalid parity setting %d", data->parity);
return -1;
}
switch (data->stopBits) {
case SERIALPORT_STOPBITS_ONE:
options.c_cflag &= ~CSTOPB;
break;
case SERIALPORT_STOPBITS_TWO:
options.c_cflag |= CSTOPB;
break;
default:
snprintf(data->errorString, sizeof(data->errorString), "Invalid stop bits setting %d", data->stopBits);
return -1;
}
options.c_cflag |= CLOCAL; // ignore status lines
options.c_cflag |= CREAD; // enable receiver
if (data->hupcl) {
options.c_cflag |= HUPCL; // drop DTR (i.e. hangup) on close
}
// Raw output
options.c_oflag = 0;
// ICANON makes partial lines not readable. It should be optional.
// It works with ICRNL.
options.c_lflag = 0; // ICANON;
options.c_cc[VMIN]= data->vmin;
options.c_cc[VTIME]= data->vtime;
// Note that tcsetattr() returns success if any of the requested changes could be successfully carried out.
// Therefore, when making multiple changes it may be necessary to follow this call with a further call to
// tcgetattr() to check that all changes have been performed successfully.
// This also fails on OSX
tcsetattr(fd, TCSANOW, &options);
if (data->lock) {
if (-1 == flock(fd, LOCK_EX | LOCK_NB)) {
snprintf(data->errorString, sizeof(data->errorString), "Error %s Cannot lock port", strerror(errno));
return -1;
}
}
// Copy the connection options into the ConnectionOptionsBaton to set the baud rate
ConnectionOptionsBaton* connectionOptions = new ConnectionOptionsBaton();
connectionOptions->fd = fd;
connectionOptions->baudRate = data->baudRate;
if (-1 == setBaudRate(connectionOptions)) {
strncpy(data->errorString, connectionOptions->errorString, sizeof(data->errorString));
delete(connectionOptions);
return -1;
}
delete(connectionOptions);
// flush all unread and wrote data up to this point because it could have been received or sent with bad settings
// Not needed since setBaudRate does this for us
// tcflush(fd, TCIOFLUSH);
return 1;
}
