/*** BeginHeader xbee_ser_get_cts */
int xbee_ser_get_cts( xbee_serial_t *serial)
{
XBEE_SER_CHECK( serial);
// the xCheckCTS returns the pin's value, negate it since CTS is active low.
return 1;
}
/*** EndHeader */
int xbee_ser_flowcontrol( xbee_serial_t *serial, bool_t enabled)
{
XBEE_SER_CHECK( serial);
if (enabled)
{
switch ( serial->usart )
{
case USART0:
return 0;
break;
#if defined(__AVR_ATmega324P__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega644PA__) || defined(__AVR_ATmega640__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__)
case USART1:
return 0;
break;
#endif
default:
return -EINVAL;
break;
}
}
return 0;
}
int xbee_ser_break( xbee_serial_t *serial, int enabled)
{
BOOL success;
XBEE_SER_CHECK( serial);
if (enabled)
{
success = SetCommBreak( serial->hCom);
}
else
{
success = ClearCommBreak( serial->hCom);
}
#ifdef XBEE_SERIAL_VERBOSE
if (success == 0)
{
printf( "%s: {Set|Clear}CommBreak error %lu\n", __FUNCTION__,
GetLastError());
}
#endif
return success ? 0 : -EIO;
}
int xbee_ser_write( xbee_serial_t *serial, const void FAR *buffer,
int length)
{
int result;
XBEE_SER_CHECK( serial);
if (length < 0)
{
return -EINVAL;
}
result = write( serial->fd, buffer, length);
if (result < 0)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: error %d trying to write %d bytes\n", __FUNCTION__,
errno, length);
#endif
return -errno;
}
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: wrote %d of %d bytes\n", __FUNCTION__, result, length);
hex_dump( buffer, result, HEX_DUMP_FLAG_TAB);
#endif
return result;
}
int xbee_ser_flowcontrol( xbee_serial_t *serial, int enabled)
{
struct termios options;
XBEE_SER_CHECK( serial);
// Get the current options for the port...
if (tcgetattr( serial->fd, &options) == -1)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: %s failed (%d)\n", __FUNCTION__, "tcgetattr", errno);
#endif
return -errno;
}
if (enabled)
{
options.c_cflag |= CRTSCTS;
}
else
{
options.c_cflag &= ~CRTSCTS;
}
// Set the new options for the port immediately
if (tcsetattr( serial->fd, TCSANOW, &options) == -1)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: %s failed (%d)\n", __FUNCTION__, "tcsetattr", errno);
#endif
return -errno;
}
return 0;
}
int xbee_ser_flowcontrol( xbee_serial_t *serial, int enabled)
{
DCB dcb;
XBEE_SER_CHECK( serial);
memset( &dcb, 0, sizeof dcb);
dcb.DCBlength = sizeof dcb;
if (!GetCommState( serial->hCom, &dcb))
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: GetComState error %lu\n", __FUNCTION__, GetLastError());
#endif
return -EIO;
}
dcb.fOutxCtsFlow = enabled ? TRUE : FALSE;
dcb.fRtsControl = enabled ? RTS_CONTROL_HANDSHAKE : RTS_CONTROL_DISABLE;
if (!SetCommState( serial->hCom, &dcb))
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: SetComState error %lu\n", __FUNCTION__, GetLastError());
#endif
return -EIO;
}
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: flowcontrol %s\n", __FUNCTION__,
enabled ? "enabled" : "disabled");
#endif
return 0;
}
int xbee_ser_break( xbee_serial_t *serial, int enabled)
{
XBEE_SER_CHECK( serial);
/* Devnote regarding use of ioctl() over tcsendbreak():
"The effect of a nonzero duration with tcsendbreak() varies. SunOS
specifies a break of duration * N seconds, where N is at least 0.25,
and not more than 0.5. Linux, AIX, DU, Tru64 send a break of duration
milliseconds. FreeBSD and NetBSD and HP-UX and MacOS ignore the value
of duration. Under Solaris and UnixWare, tcsendbreak() with nonzero
duration behaves like tcdrain()."
- http://linux.die.net/man/3/tcsendbreak
*/
if (ioctl( serial->fd, enabled ? TIOCSBRK : TIOCCBRK) == -1)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: ioctl %s failed (errno=%d)\n", __FUNCTION__,
"TIOCMGET", errno);
#endif
return -errno;
}
return 0;
}
int xbee_ser_write( xbee_serial_t *serial, const void FAR *buffer,
int length)
{
DWORD dwWrote;
BOOL success;
XBEE_SER_CHECK( serial);
if (! buffer || length < 0)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: return -EINVAL (buffer=%p, length=%d)\n",
__FUNCTION__, buffer, length);
#endif
return -EINVAL;
}
success = WriteFile( serial->hCom, buffer, length, &dwWrote, NULL);
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: wrote %d of %d bytes (err=%lu)\n", __FUNCTION__,
(int) dwWrote, length, success ? 0 : GetLastError());
hex_dump( buffer, length, HEX_DUMP_FLAG_TAB);
#endif
if (! success)
{
return -EIO;
}
return (int) dwWrote;
}
/*** EndHeader */
int xbee_ser_rx_flush( xbee_serial_t *serial)
{
XBEE_SER_CHECK( serial);
xSerialRxFlush( serial );
return 0;
}
int xbee_ser_read( xbee_serial_t *serial, void FAR *buffer, int bufsize)
{
DWORD dwRead;
BOOL success;
XBEE_SER_CHECK( serial);
if (! buffer || bufsize < 0)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: return -EINVAL (buffer=%p, bufsize=%d)\n",
__FUNCTION__, buffer, bufsize);
#endif
return -EINVAL;
}
success = ReadFile( serial->hCom, buffer, bufsize, &dwRead, NULL);
#ifdef XBEE_SERIAL_VERBOSE
if (! success)
{
printf( "%s: ReadFile error %lu\n", __FUNCTION__, GetLastError());
}
if (dwRead)
{
printf( "%s: read %d bytes\n", __FUNCTION__, (int) dwRead);
hex_dump( buffer, (int) dwRead, HEX_DUMP_FLAG_TAB);
}
#endif
if (! success)
{
return -EIO;
}
return (int) dwRead;
}
int xbee_ser_rx_flush( xbee_serial_t *serial)
{
XBEE_SER_CHECK( serial);
tcflush( serial->fd, TCIFLUSH);
return 0;
}
/*** EndHeader */
int xbee_ser_close( xbee_serial_t *serial)
{
XBEE_SER_CHECK( serial);
vSerialClose (serial);
return 0;
}
int xbee_ser_rx_flush( xbee_serial_t *serial)
{
XBEE_SER_CHECK( serial);
PurgeComm( serial->hCom, PURGE_RXCLEAR | PURGE_RXABORT);
return 0;
}
/*** EndHeader */
int xbee_ser_break( xbee_serial_t *serial, bool_t enabled)
{
XBEE_SER_CHECK( serial);
if (enabled)
{
switch ( serial->usart )
{
case USART0:
/* Disable the Tx */
UCSR0B &= ~_BV(UDRIE0);
UCSR0B &= ~_BV(TXEN0);
/* Pull it low to send Break */
DDRD |= _BV(DDD1);
PORTD &= ~_BV(PIN1);
break;
#if defined(__AVR_ATmega324P__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega644PA__) || defined(__AVR_ATmega640__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__)
case USART1:
/* Disable the Tx */
UCSR1B &= ~_BV(UDRIE1);
UCSR1B &= ~ _BV(TXEN1);
/* Pull it low to send Break */
DDRD |= _BV(DDD3);
PORTD &= ~_BV(PIN3);
break;
#endif
default:
return -EINVAL;
break;
}
}
else
{
switch ( serial->usart )
{
case USART0:
/* Enable the Tx. */
UCSR0B |= _BV(TXEN0) ;
break;
#if defined(__AVR_ATmega324P__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega644PA__) || defined(__AVR_ATmega640__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__)
case USART1:
/* Enable the Tx. */
UCSR1B |= _BV(TXEN1);
break;
#endif
default:
return -EINVAL;
break;
}
}
return 0;
}
int xbee_ser_close( xbee_serial_t *serial)
{
XBEE_SER_CHECK( serial);
CloseHandle( serial->hCom);
serial->hCom = NULL;
return 0;
}
/*** EndHeader */
int xbee_ser_rx_used( xbee_serial_t *serial)
{
XBEE_SER_CHECK( serial);
// return bytes used in rx buffer -- will this be difficult on some platforms
// (like PC) where we can't peek at the stream? It may be necessary to create
// a small buffer for the program to buffer up to 512 bytes from COM port.
return (int)( serial->xRxedChars.count );
}
/*** EndHeader */
int xbee_ser_putchar( xbee_serial_t *serial, uint8_t ch)
{
bool_t error;
XBEE_SER_CHECK( serial);
error = xSerialPutChar( serial, (UBaseType_t)ch);
if (error == FALSE)
return 0;
else
return -ENOSPC;
}
/*** EndHeader */
int xbee_ser_open( xbee_serial_t *serial, uint32_t baudrate)
{
XBEE_SER_CHECK( serial);
if (xbee_ser_invalid(serial))
{
return -EIO;
}
else
{
return 0;
}
}
int xbee_ser_rx_used( xbee_serial_t *serial)
{
COMSTAT stat;
XBEE_SER_CHECK( serial);
if (ClearCommError( serial->hCom, NULL, &stat))
{
return (int) stat.cbInQue;
}
return 0;
}
/*** EndHeader */
int xbee_ser_getchar( xbee_serial_t *serial)
{
UBaseType_t ch;
bool_t error;
XBEE_SER_CHECK( serial);
error = xSerialGetChar( serial, &ch);
if (error == FALSE)
return (int)ch;
else
return -ENODATA;
}
int xbee_ser_get_cts( xbee_serial_t *serial)
{
DWORD dwModemStatus;
XBEE_SER_CHECK( serial);
if (!GetCommModemStatus( serial->hCom, &dwModemStatus))
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: GetCommModemStatus error %lu\n", __FUNCTION__,
GetLastError());
#endif
return -EIO;
}
return (dwModemStatus & MS_CTS_ON) ? 1 : 0;
}
int xbee_ser_get_cts( xbee_serial_t *serial)
{
int status;
XBEE_SER_CHECK( serial);
if (ioctl( serial->fd, TIOCMGET, &status) == -1)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: ioctl %s failed (errno=%d)\n", __FUNCTION__,
"TIOCMGET", errno);
#endif
return -errno;
}
return (status & TIOCM_CTS) ? 1 : 0;
}
int xbee_ser_close( xbee_serial_t *serial)
{
int result = 0;
XBEE_SER_CHECK( serial);
if (close( serial->fd) == -1)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: close(%d) failed (errno=%d)\n", __FUNCTION__,
serial->fd, errno);
#endif
result = -errno;
}
serial->fd = -1;
return result;
}
int xbee_ser_rx_used( xbee_serial_t *serial)
{
int bytes;
XBEE_SER_CHECK( serial);
if (ioctl( serial->fd,
#ifdef FIONREAD
FIONREAD,
#else
TIOCINQ, // for Cygwin
#endif
&bytes) == -1)
{
return -errno;
}
return bytes;
}
/*** EndHeader */
int xbee_ser_read( xbee_serial_t *serial, void FAR *buffer, int bufsize)
{
int16_t read;
UBaseType_t *buff = (UBaseType_t *)buffer;
XBEE_SER_CHECK( serial );
if (! buffer || bufsize < 0)
{
return -EINVAL;
}
for( read = 0; read < bufsize; ++read )
{
if( !(xSerialGetChar( serial, &buff[read] ))) // if there's an error, because we have no bytes
return -EIO; // return an error
}
return read; // otherwise return bytes read.
}
/*** EndHeader */
int xbee_ser_write( xbee_serial_t *serial, const void FAR *buffer, int length)
{
int16_t written;
UBaseType_t *buff = (UBaseType_t *)buffer;
XBEE_SER_CHECK( serial );
if (! buffer || length < 0)
{
return -EINVAL;
}
for( written = 0; written < length; ++written )
{
if( !(xSerialPutChar( serial, buff[written] ))) // if there's an error
return -EIO; // return an error
}
return written; // otherwise return bytes written.
}
int xbee_ser_set_rts( xbee_serial_t *serial, int asserted)
{
BOOL success;
XBEE_SER_CHECK( serial);
// disable flow control so our manual setting will stick
xbee_ser_flowcontrol( serial, 0);
success = EscapeCommFunction( serial->hCom, asserted ? SETRTS : CLRRTS);
#ifdef XBEE_SERIAL_VERBOSE
if (success == 0)
{
printf( "%s: EscapeCommFunction error %lu\n", __FUNCTION__,
GetLastError());
}
#endif
return success ? 0 : -EIO;
}
int xbee_ser_set_rts( xbee_serial_t *serial, int asserted)
{
int status;
XBEE_SER_CHECK( serial);
// disable flow control so our manual setting will stick
xbee_ser_flowcontrol( serial, 0);
if (ioctl( serial->fd, TIOCMGET, &status) == -1)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: ioctl %s failed (errno=%d)\n", __FUNCTION__,
"TIOCMGET", errno);
#endif
return -errno;
}
if (asserted)
{
status |= TIOCM_RTS;
}
else
{
status &= ~TIOCM_RTS;
}
if (ioctl( serial->fd, TIOCMSET, &status) == -1)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: ioctl %s failed (errno=%d)\n", __FUNCTION__,
"TIOCMSET", errno);
#endif
return -errno;
}
return 0;
}
int xbee_ser_read( xbee_serial_t *serial, void FAR *buffer, int bufsize)
{
int result;
XBEE_SER_CHECK( serial);
if (! buffer || bufsize < 0)
{
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: buffer=%p, bufsize=%d; return -EINVAL\n", __FUNCTION__,
buffer, bufsize);
#endif
return -EINVAL;
}
result = read( serial->fd, buffer, bufsize);
if (result == -1)
{
if (errno == EAGAIN)
{
return 0;
}
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: error %d trying to read %d bytes\n", __FUNCTION__,
errno, bufsize);
#endif
return -errno;
}
#ifdef XBEE_SERIAL_VERBOSE
printf( "%s: read %d bytes\n", __FUNCTION__, result);
hex_dump( buffer, result, HEX_DUMP_FLAG_TAB);
#endif
return result;
}
int xbee_ser_rx_free( xbee_serial_t *serial)
{
XBEE_SER_CHECK( serial);
return XBEE_SER_RX_BUFSIZE - xbee_ser_rx_used( serial);
}