int AsyncTCPSocketNormal::Send(const void* pv, size_t cb,
talk_base::DiffServCodePoint dscp)
{
if (cb > kBufSize) {
SetError(EMSGSIZE);
return -1;
}
// If we are blocking on send, then silently drop this packet
if (!IsOutBufferEmpty())
return static_cast<int>(cb);
//PacketLength pkt_len = HostToNetwork16(static_cast<PacketLength>(cb));
//AppendToOutBuffer(&pkt_len, kPacketLenSize);
AppendToOutBuffer(pv, cb);
int res = FlushOutBuffer();
if (res <= 0) {
// drop packet if we made no progress
ClearOutBuffer();
return res;
}
// We claim to have sent the whole thing, even if we only sent partial
return static_cast<int>(cb);
}
int SerialDevice::openPort(std::string device, int baud, int Parity, int StopBits)
{
int BAUD, DATABITS, STOPBITS, PARITYON, PARITY;
struct termios config;
// Adapt baud to termios.h baudrate enum
switch(baud)
{
case 57600:
BAUD = B57600;
break;
case 38400:
BAUD = B38400;
break;
case 19200:
BAUD = B19200;
break;
case 9600:
default: //If incorrect value is entered, baud will be defaulted to 9600
BAUD = B9600;
break;
}
switch (Parity)
{
case 0:
default: //none
PARITYON = 0;
PARITY = 0;
break;
case 1: //odd
PARITYON = PARENB;
PARITY = PARODD;
break;
case 2: //even
PARITYON = PARENB;
PARITY = 0;
break;
}
device = device.insert(0,"/dev/"); /// inserts '/dev/' infront of device name
/// attempt to open the serial device
fd_ = open(device.c_str(), O_RDWR | O_NOCTTY | O_NDELAY);
/// open(2) returns <0 if the port could NOT be opened
if (fd_ == -1 ) {
return -1;
}
/// linux serial port stuff
// int flags;
// flags = fcntl(m_fd,F_GETFL,0);
fcntl(fd_, F_SETFL, 0);// flags | O_NONBLOCK); /// O_NONBLOCK makes read return even if there is no data
tcgetattr(fd_, &config);
/// sets serial port baudrate
cfsetispeed(&config, BAUD); /// for input
cfsetospeed(&config, BAUD); /// for output
/// adjust stop bits
STOPBITS = StopBits;
/// set data to 8-bit
DATABITS = CS8;
/// load configuration. tcsetattr(3) returns <0 if error
//
//config.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG); //Raw mode (no processing)
config.c_cflag &= ~CRTSCTS; //Disable hw flow ctrl
config.c_cflag = BAUD | DATABITS | STOPBITS | PARITYON | PARITY | CLOCAL | CREAD;
config.c_iflag |= INPCK | ISTRIP ; // Enable parity checking and take away partiy bit
config.c_iflag &= ~(IXON | IXOFF | IXANY ); //SW flow control disabled
config.c_oflag = 0;
config.c_lflag |= ICANON | ISIG ; /// Canonical mode
//config.c_cc[VMIN] = 32;
// config.c_cc[VTIME] = 1; //timeout after 3s without receiving new characters*/
/// load configuration. tcsetattr(3) returns <0 if error
if(tcsetattr(fd_, TCSANOW, &config) < 0)
{
return -1;
}
/// alles richtig!
FlushInBuffer();
FlushOutBuffer();
PutString("E\n");
return 0;
}
