[proxmark3-svn] / uart / uart_posix.c

/*
 * Generic uart / rs232/ serial port library
 *
 * Copyright (c) 2013, Roel Verdult
 * Copyright (c) 2018 Google
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @file uart_posix.c
 *
 * This version of the library has functionality removed which was not used by
 * proxmark3 project.
 */

// Test if we are dealing with posix operating systems
#ifndef _WIN32
#define _DEFAULT_SOURCE

#include "uart.h"

#include <termios.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <limits.h>
#include <sys/time.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>

typedef struct termios term_info;
typedef struct {
  int fd;           // Serial port file descriptor
  term_info tiOld;  // Terminal info before using the port
  term_info tiNew;  // Terminal info during the transaction
} serial_port_unix;

// Set time-out on 30 miliseconds
const struct timeval timeout = {
  .tv_sec  =     0, // 0 second
  .tv_usec = 300000  // 300000 micro seconds
};

serial_port uart_open(const char* pcPortName)
{
  serial_port_unix* sp = malloc(sizeof(serial_port_unix));
  if (sp == 0) return INVALID_SERIAL_PORT;
  
  if (memcmp(pcPortName, "tcp:", 4) == 0) {
    struct addrinfo *addr, *rp;
    char *addrstr = strdup(pcPortName + 4);
    if (addrstr == NULL) {
      printf("Error: strdup\n");
      return INVALID_SERIAL_PORT;
    }
    char *colon = strrchr(addrstr, ':');
    char *portstr;
    if (colon) {
      portstr = colon + 1;
      *colon = '\0';
    } else
      portstr = "7901";

    int s = getaddrinfo(addrstr, portstr, NULL, &addr);
    if (s != 0) {
      printf("Error: getaddrinfo: %s\n", gai_strerror(s));
      return INVALID_SERIAL_PORT;
    }

    int sfd;
    for (rp = addr; rp != NULL; rp = rp->ai_next) {
      sfd = socket(rp->ai_family, rp->ai_socktype,
		   rp->ai_protocol);
      if (sfd == -1)
	continue;

      if (connect(sfd, rp->ai_addr, rp->ai_addrlen) != -1)
	break;

      close(sfd);
    }

    if (rp == NULL) {               /* No address succeeded */
      printf("Error: Could not connect\n");
      return INVALID_SERIAL_PORT;
    }

    freeaddrinfo(addr);
    free(addrstr);

    sp->fd = sfd;

    int one = 1;
    setsockopt(sp->fd, SOL_TCP, TCP_NODELAY, &one, sizeof(one));
    return sp;
  }

  sp->fd = open(pcPortName, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK);
  if(sp->fd == -1) {
    uart_close(sp);
    return INVALID_SERIAL_PORT;
  }

  // Finally figured out a way to claim a serial port interface under unix
  // We just try to set a (advisory) lock on the file descriptor
  struct flock fl;
  fl.l_type   = F_WRLCK;
  fl.l_whence = SEEK_SET;
  fl.l_start  = 0;
  fl.l_len    = 0;
  fl.l_pid    = getpid();
  
  // Does the system allows us to place a lock on this file descriptor
  if (fcntl(sp->fd, F_SETLK, &fl) == -1) {
    // A conflicting lock is held by another process
    free(sp);
    return CLAIMED_SERIAL_PORT;
  }

  // Try to retrieve the old (current) terminal info struct
  if(tcgetattr(sp->fd,&sp->tiOld) == -1) {
    uart_close(sp);
    return INVALID_SERIAL_PORT;
  }
  
  // Duplicate the (old) terminal info struct
  sp->tiNew = sp->tiOld;
  
  // Configure the serial port
  sp->tiNew.c_cflag = CS8 | CLOCAL | CREAD;
  sp->tiNew.c_iflag = IGNPAR;
  sp->tiNew.c_oflag = 0;
  sp->tiNew.c_lflag = 0;
    
  // Block until n bytes are received
  sp->tiNew.c_cc[VMIN] = 0;
  // Block until a timer expires (n * 100 mSec.)
  sp->tiNew.c_cc[VTIME] = 0;
  
  // Try to set the new terminal info struct
  if(tcsetattr(sp->fd,TCSANOW,&sp->tiNew) == -1) {
    uart_close(sp);
    return INVALID_SERIAL_PORT;
  }
  
  // Flush all lingering data that may exist
  tcflush(sp->fd, TCIOFLUSH);

  return sp;
}

void uart_close(const serial_port sp) {
  serial_port_unix* spu = (serial_port_unix*)sp;
  tcflush(spu->fd,TCIOFLUSH);
  tcsetattr(spu->fd,TCSANOW,&(spu->tiOld));
  struct flock fl;
  fl.l_type   = F_UNLCK;
  fl.l_whence = SEEK_SET;
  fl.l_start  = 0;
  fl.l_len    = 0;
  fl.l_pid    = getpid();
  fcntl(spu->fd, F_SETLK, &fl);
  close(spu->fd);
  free(sp);
}

bool uart_receive(const serial_port sp, uint8_t* pbtRx, size_t pszMaxRxLen, size_t* pszRxLen) {
  int res;
  int byteCount;
  fd_set rfds;
  struct timeval tv;
  
  // Reset the output count
  *pszRxLen = 0;
  
  do {
    // Reset file descriptor
    FD_ZERO(&rfds);
    FD_SET(((serial_port_unix*)sp)->fd,&rfds);
    tv = timeout;
    res = select(((serial_port_unix*)sp)->fd+1, &rfds, NULL, NULL, &tv);
    
    // Read error
    if (res < 0) {
      return false;
    }
 
    // Read time-out
    if (res == 0) {
      if (*pszRxLen == 0) {
        // Error, we received no data
        return false;
      } else {
        // We received some data, but nothing more is available
        return true;
      }
    }
 
    // Retrieve the count of the incoming bytes
    res = ioctl(((serial_port_unix*)sp)->fd, FIONREAD, &byteCount);
    if (res < 0) return false;
    
    // Cap the number of bytes, so we don't overrun the buffer
    if (pszMaxRxLen - (*pszRxLen) < byteCount) {
    	byteCount = pszMaxRxLen - (*pszRxLen);
    }

    // There is something available, read the data
    res = read(((serial_port_unix*)sp)->fd, pbtRx+(*pszRxLen), byteCount);

    // Stop if the OS has some troubles reading the data
    if (res <= 0) return false;
 
    *pszRxLen += res;

    if (*pszRxLen == pszMaxRxLen) {
    	// We have all the data we wanted.
      return true;
    }
    
  } while (byteCount);

  return true;
}

bool uart_send(const serial_port sp, const uint8_t* pbtTx, const size_t szTxLen) {
  int32_t res;
  size_t szPos = 0;
  fd_set rfds;
  struct timeval tv;
  
  while (szPos < szTxLen) {
    // Reset file descriptor
    FD_ZERO(&rfds);
    FD_SET(((serial_port_unix*)sp)->fd,&rfds);
    tv = timeout;
    res = select(((serial_port_unix*)sp)->fd+1, NULL, &rfds, NULL, &tv);
    
    // Write error
    if (res < 0) {
      return false;
    }
    
    // Write time-out
    if (res == 0) {
      return false;
    }
    
    // Send away the bytes
    res = write(((serial_port_unix*)sp)->fd,pbtTx+szPos,szTxLen-szPos);
    
    // Stop if the OS has some troubles sending the data
    if (res <= 0) return false;
    
    szPos += res;
  }
  return true;
}

bool uart_set_speed(serial_port sp, const uint32_t uiPortSpeed) {
  const serial_port_unix* spu = (serial_port_unix*)sp;
  speed_t stPortSpeed;
  switch (uiPortSpeed) {
    case 0: stPortSpeed = B0; break;
    case 50: stPortSpeed = B50; break;
    case 75: stPortSpeed = B75; break;
    case 110: stPortSpeed = B110; break;
    case 134: stPortSpeed = B134; break;
    case 150: stPortSpeed = B150; break;
    case 300: stPortSpeed = B300; break;
    case 600: stPortSpeed = B600; break;
    case 1200: stPortSpeed = B1200; break;
    case 1800: stPortSpeed = B1800; break;
    case 2400: stPortSpeed = B2400; break;
    case 4800: stPortSpeed = B4800; break;
    case 9600: stPortSpeed = B9600; break;
    case 19200: stPortSpeed = B19200; break;
    case 38400: stPortSpeed = B38400; break;
#  ifdef B57600
    case 57600: stPortSpeed = B57600; break;
#  endif
#  ifdef B115200
    case 115200: stPortSpeed = B115200; break;
#  endif
#  ifdef B230400
    case 230400: stPortSpeed = B230400; break;
#  endif
#  ifdef B460800
    case 460800: stPortSpeed = B460800; break;
#  endif
#  ifdef B921600
    case 921600: stPortSpeed = B921600; break;
#  endif
    default: return false;
  };
  struct termios ti;
  if (tcgetattr(spu->fd,&ti) == -1) return false;
  // Set port speed (Input and Output)
  cfsetispeed(&ti,stPortSpeed);
  cfsetospeed(&ti,stPortSpeed);
  return (tcsetattr(spu->fd,TCSANOW,&ti) != -1);
}

uint32_t uart_get_speed(const serial_port sp) {
  struct termios ti;
  uint32_t uiPortSpeed;
  const serial_port_unix* spu = (serial_port_unix*)sp;
  if (tcgetattr(spu->fd,&ti) == -1) return 0;
  // Set port speed (Input)
  speed_t stPortSpeed = cfgetispeed(&ti);
  switch (stPortSpeed) {
    case B0: uiPortSpeed = 0; break;
    case B50: uiPortSpeed = 50; break;
    case B75: uiPortSpeed = 75; break;
    case B110: uiPortSpeed = 110; break;
    case B134: uiPortSpeed = 134; break;
    case B150: uiPortSpeed = 150; break;
    case B300: uiPortSpeed = 300; break;
    case B600: uiPortSpeed = 600; break;
    case B1200: uiPortSpeed = 1200; break;
    case B1800: uiPortSpeed = 1800; break;
    case B2400: uiPortSpeed = 2400; break;
    case B4800: uiPortSpeed = 4800; break;
    case B9600: uiPortSpeed = 9600; break;
    case B19200: uiPortSpeed = 19200; break;
    case B38400: uiPortSpeed = 38400; break;
#  ifdef B57600
    case B57600: uiPortSpeed = 57600; break;
#  endif
#  ifdef B115200
    case B115200: uiPortSpeed = 115200; break;
#  endif
#  ifdef B230400
    case B230400: uiPortSpeed = 230400; break;
#  endif
#  ifdef B460800
    case B460800: uiPortSpeed = 460800; break;
#  endif
#  ifdef B921600
    case B921600: uiPortSpeed = 921600; break;
#  endif
    default: return 0;
  };
  return uiPortSpeed;
}

#endif
Commit	Line	Data
5bcc76c4	1	/*
13dbdd6b	2	* Generic uart / rs232/ serial port library
5bcc76c4	3	*
13dbdd6b	4	* Copyright (c) 2013, Roel Verdult
d664113a	5	* Copyright (c) 2018 Google
5bcc76c4	6	* All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions and the following disclaimer.
	12	* 2. Redistributions in binary form must reproduce the above copyright
	13	* notice, this list of conditions and the following disclaimer in the
	14	* documentation and/or other materials provided with the distribution.
	15	* 3. Neither the name of the copyright holders nor the
	16	* names of its contributors may be used to endorse or promote products
	17	* derived from this software without specific prior written permission.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
	20	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	21	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	22	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
	23	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	24	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	25	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	26	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	27	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	28	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	29	*
067bfc8b	30	* @file uart_posix.c
5bcc76c4	31	*
067bfc8b MF	32	* This version of the library has functionality removed which was not used by
067bfc8b MF	33	* proxmark3 project.
5bcc76c4	34	*/
5bcc76c4	35
067bfc8b	36	// Test if we are dealing with posix operating systems
5bcc76c4	37	#ifndef _WIN32
d664113a VS	38	#define _DEFAULT_SOURCE
	39
	40	#include "uart.h"
	41
5bcc76c4	42	#include <termios.h>
067bfc8b MF	43	#include <sys/ioctl.h>
	44	#include <unistd.h>
	45	#include <fcntl.h>
	46	#include <sys/types.h>
	47	#include <sys/stat.h>
	48	#include <limits.h>
	49	#include <sys/time.h>
	50	#include <errno.h>
d664113a VS	51	#include <sys/types.h>
	52	#include <sys/socket.h>
	53	#include <netinet/in.h>
	54	#include <netinet/tcp.h>
	55	#include <arpa/inet.h>
	56	#include <netdb.h>
067bfc8b	57
5bcc76c4	58	typedef struct termios term_info;
	59	typedef struct {
	60	int fd; // Serial port file descriptor
	61	term_info tiOld; // Terminal info before using the port
	62	term_info tiNew; // Terminal info during the transaction
	63	} serial_port_unix;
	64
	65	// Set time-out on 30 miliseconds
13dbdd6b	66	const struct timeval timeout = {
5bcc76c4	67	.tv_sec = 0, // 0 second
d664113a	68	.tv_usec = 300000 // 300000 micro seconds
5bcc76c4	69	};
5bcc76c4	70
5bcc76c4	71	serial_port uart_open(const char* pcPortName)
	72	{
	73	serial_port_unix* sp = malloc(sizeof(serial_port_unix));
5bcc76c4	74	if (sp == 0) return INVALID_SERIAL_PORT;
13dbdd6b	75
d664113a VS	76	if (memcmp(pcPortName, "tcp:", 4) == 0) {
	77	struct addrinfo addr, rp;
	78	char *addrstr = strdup(pcPortName + 4);
	79	if (addrstr == NULL) {
	80	printf("Error: strdup\n");
	81	return INVALID_SERIAL_PORT;
	82	}
	83	char *colon = strrchr(addrstr, ':');
	84	char *portstr;
	85	if (colon) {
	86	portstr = colon + 1;
	87	*colon = '\0';
	88	} else
	89	portstr = "7901";
	90
	91	int s = getaddrinfo(addrstr, portstr, NULL, &addr);
	92	if (s != 0) {
	93	printf("Error: getaddrinfo: %s\n", gai_strerror(s));
	94	return INVALID_SERIAL_PORT;
	95	}
	96
	97	int sfd;
	98	for (rp = addr; rp != NULL; rp = rp->ai_next) {
	99	sfd = socket(rp->ai_family, rp->ai_socktype,
	100	rp->ai_protocol);
	101	if (sfd == -1)
	102	continue;
	103
	104	if (connect(sfd, rp->ai_addr, rp->ai_addrlen) != -1)
	105	break;
	106
	107	close(sfd);
	108	}
	109
	110	if (rp == NULL) { /* No address succeeded */
	111	printf("Error: Could not connect\n");
	112	return INVALID_SERIAL_PORT;
	113	}
	114
	115	freeaddrinfo(addr);
	116	free(addrstr);
	117
	118	sp->fd = sfd;
	119
	120	int one = 1;
	121	setsockopt(sp->fd, SOL_TCP, TCP_NODELAY, &one, sizeof(one));
	122	return sp;
	123	}
	124
5bcc76c4	125	sp->fd = open(pcPortName, O_RDWR \| O_NOCTTY \| O_NDELAY \| O_NONBLOCK);
62ee4fed	126	if(sp->fd == -1) {
5bcc76c4	127	uart_close(sp);
	128	return INVALID_SERIAL_PORT;
	129	}
62ee4fed	130
	131	// Finally figured out a way to claim a serial port interface under unix
	132	// We just try to set a (advisory) lock on the file descriptor
	133	struct flock fl;
	134	fl.l_type = F_WRLCK;
	135	fl.l_whence = SEEK_SET;
	136	fl.l_start = 0;
	137	fl.l_len = 0;
	138	fl.l_pid = getpid();
13dbdd6b	139
62ee4fed	140	// Does the system allows us to place a lock on this file descriptor
	141	if (fcntl(sp->fd, F_SETLK, &fl) == -1) {
	142	// A conflicting lock is held by another process
ca4714cd	143	free(sp);
62ee4fed	144	return CLAIMED_SERIAL_PORT;
5bcc76c4	145	}
62ee4fed	146
	147	// Try to retrieve the old (current) terminal info struct
	148	if(tcgetattr(sp->fd,&sp->tiOld) == -1) {
5bcc76c4	149	uart_close(sp);
62ee4fed	150	return INVALID_SERIAL_PORT;
5bcc76c4	151	}
13dbdd6b	152
62ee4fed	153	// Duplicate the (old) terminal info struct
5bcc76c4	154	sp->tiNew = sp->tiOld;
13dbdd6b	155
62ee4fed	156	// Configure the serial port
5bcc76c4	157	sp->tiNew.c_cflag = CS8 \| CLOCAL \| CREAD;
62ee4fed	158	sp->tiNew.c_iflag = IGNPAR;
5bcc76c4	159	sp->tiNew.c_oflag = 0;
5bcc76c4	160	sp->tiNew.c_lflag = 0;
62ee4fed	161
	162	// Block until n bytes are received
	163	sp->tiNew.c_cc[VMIN] = 0;
	164	// Block until a timer expires (n * 100 mSec.)
	165	sp->tiNew.c_cc[VTIME] = 0;
0a24369c	166
62ee4fed	167	// Try to set the new terminal info struct
62ee4fed	168	if(tcsetattr(sp->fd,TCSANOW,&sp->tiNew) == -1) {
5bcc76c4	169	uart_close(sp);
	170	return INVALID_SERIAL_PORT;
	171	}
13dbdd6b	172
62ee4fed	173	// Flush all lingering data that may exist
0a24369c	174	tcflush(sp->fd, TCIOFLUSH);
62ee4fed	175
5bcc76c4	176	return sp;
	177	}
	178
62ee4fed	179	void uart_close(const serial_port sp) {
	180	serial_port_unix* spu = (serial_port_unix*)sp;
	181	tcflush(spu->fd,TCIOFLUSH);
	182	tcsetattr(spu->fd,TCSANOW,&(spu->tiOld));
	183	struct flock fl;
	184	fl.l_type = F_UNLCK;
	185	fl.l_whence = SEEK_SET;
	186	fl.l_start = 0;
	187	fl.l_len = 0;
	188	fl.l_pid = getpid();
	189	fcntl(spu->fd, F_SETLK, &fl);
	190	close(spu->fd);
	191	free(sp);
	192	}
	193
f5ecd97b	194	bool uart_receive(const serial_port sp, uint8_t* pbtRx, size_t pszMaxRxLen, size_t* pszRxLen) {
5bcc76c4	195	int res;
	196	int byteCount;
	197	fd_set rfds;
	198	struct timeval tv;
13dbdd6b	199
13dbdd6b	200	// Reset the output count
5bcc76c4	201	*pszRxLen = 0;
13dbdd6b	202
5bcc76c4	203	do {
	204	// Reset file descriptor
	205	FD_ZERO(&rfds);
	206	FD_SET(((serial_port_unix*)sp)->fd,&rfds);
	207	tv = timeout;
	208	res = select(((serial_port_unix*)sp)->fd+1, &rfds, NULL, NULL, &tv);
13dbdd6b	209
5bcc76c4	210	// Read error
5bcc76c4	211	if (res < 0) {
5bcc76c4	212	return false;
5bcc76c4	213	}
babfcaa0	214
5bcc76c4	215	// Read time-out
	216	if (res == 0) {
	217	if (*pszRxLen == 0) {
	218	// Error, we received no data
5bcc76c4	219	return false;
	220	} else {
	221	// We received some data, but nothing more is available
	222	return true;
	223	}
	224	}
babfcaa0	225
5bcc76c4	226	// Retrieve the count of the incoming bytes
	227	res = ioctl(((serial_port_unix*)sp)->fd, FIONREAD, &byteCount);
	228	if (res < 0) return false;
067bfc8b MF	229
	230	// Cap the number of bytes, so we don't overrun the buffer
	231	if (pszMaxRxLen - (*pszRxLen) < byteCount) {
	232	byteCount = pszMaxRxLen - (*pszRxLen);
	233	}
babfcaa0	234
5bcc76c4	235	// There is something available, read the data
067bfc8b	236	res = read(((serial_port_unix)sp)->fd, pbtRx+(pszRxLen), byteCount);
babfcaa0	237
5bcc76c4	238	// Stop if the OS has some troubles reading the data
5bcc76c4	239	if (res <= 0) return false;
babfcaa0	240
5bcc76c4	241	*pszRxLen += res;
babfcaa0	242
067bfc8b MF	243	if (*pszRxLen == pszMaxRxLen) {
	244	// We have all the data we wanted.
	245	return true;
	246	}
13dbdd6b	247
5bcc76c4	248	} while (byteCount);
babfcaa0	249
5bcc76c4	250	return true;
	251	}
	252
f5ecd97b	253	bool uart_send(const serial_port sp, const uint8_t* pbtTx, const size_t szTxLen) {
5bcc76c4	254	int32_t res;
	255	size_t szPos = 0;
	256	fd_set rfds;
	257	struct timeval tv;
13dbdd6b	258
62ee4fed	259	while (szPos < szTxLen) {
5bcc76c4	260	// Reset file descriptor
	261	FD_ZERO(&rfds);
	262	FD_SET(((serial_port_unix*)sp)->fd,&rfds);
	263	tv = timeout;
	264	res = select(((serial_port_unix*)sp)->fd+1, NULL, &rfds, NULL, &tv);
13dbdd6b	265
5bcc76c4	266	// Write error
5bcc76c4	267	if (res < 0) {
5bcc76c4	268	return false;
5bcc76c4	269	}
13dbdd6b	270
5bcc76c4	271	// Write time-out
5bcc76c4	272	if (res == 0) {
5bcc76c4	273	return false;
5bcc76c4	274	}
13dbdd6b	275
5bcc76c4	276	// Send away the bytes
	277	res = write(((serial_port_unix*)sp)->fd,pbtTx+szPos,szTxLen-szPos);
	278
	279	// Stop if the OS has some troubles sending the data
	280	if (res <= 0) return false;
13dbdd6b	281
5bcc76c4	282	szPos += res;
	283	}
	284	return true;
	285	}
	286
13dbdd6b	287	bool uart_set_speed(serial_port sp, const uint32_t uiPortSpeed) {
067bfc8b MF	288	const serial_port_unix* spu = (serial_port_unix*)sp;
	289	speed_t stPortSpeed;
	290	switch (uiPortSpeed) {
	291	case 0: stPortSpeed = B0; break;
	292	case 50: stPortSpeed = B50; break;
	293	case 75: stPortSpeed = B75; break;
	294	case 110: stPortSpeed = B110; break;
	295	case 134: stPortSpeed = B134; break;
	296	case 150: stPortSpeed = B150; break;
	297	case 300: stPortSpeed = B300; break;
	298	case 600: stPortSpeed = B600; break;
	299	case 1200: stPortSpeed = B1200; break;
	300	case 1800: stPortSpeed = B1800; break;
	301	case 2400: stPortSpeed = B2400; break;
	302	case 4800: stPortSpeed = B4800; break;
	303	case 9600: stPortSpeed = B9600; break;
	304	case 19200: stPortSpeed = B19200; break;
	305	case 38400: stPortSpeed = B38400; break;
	306	# ifdef B57600
	307	case 57600: stPortSpeed = B57600; break;
	308	# endif
	309	# ifdef B115200
	310	case 115200: stPortSpeed = B115200; break;
	311	# endif
	312	# ifdef B230400
	313	case 230400: stPortSpeed = B230400; break;
	314	# endif
	315	# ifdef B460800
	316	case 460800: stPortSpeed = B460800; break;
	317	# endif
	318	# ifdef B921600
	319	case 921600: stPortSpeed = B921600; break;
	320	# endif
	321	default: return false;
	322	};
	323	struct termios ti;
	324	if (tcgetattr(spu->fd,&ti) == -1) return false;
	325	// Set port speed (Input and Output)
	326	cfsetispeed(&ti,stPortSpeed);
	327	cfsetospeed(&ti,stPortSpeed);
	328	return (tcsetattr(spu->fd,TCSANOW,&ti) != -1);
5bcc76c4	329	}
5bcc76c4	330
13dbdd6b	331	uint32_t uart_get_speed(const serial_port sp) {
067bfc8b MF	332	struct termios ti;
	333	uint32_t uiPortSpeed;
	334	const serial_port_unix* spu = (serial_port_unix*)sp;
	335	if (tcgetattr(spu->fd,&ti) == -1) return 0;
	336	// Set port speed (Input)
	337	speed_t stPortSpeed = cfgetispeed(&ti);
	338	switch (stPortSpeed) {
	339	case B0: uiPortSpeed = 0; break;
	340	case B50: uiPortSpeed = 50; break;
	341	case B75: uiPortSpeed = 75; break;
	342	case B110: uiPortSpeed = 110; break;
	343	case B134: uiPortSpeed = 134; break;
	344	case B150: uiPortSpeed = 150; break;
	345	case B300: uiPortSpeed = 300; break;
	346	case B600: uiPortSpeed = 600; break;
	347	case B1200: uiPortSpeed = 1200; break;
	348	case B1800: uiPortSpeed = 1800; break;
	349	case B2400: uiPortSpeed = 2400; break;
	350	case B4800: uiPortSpeed = 4800; break;
	351	case B9600: uiPortSpeed = 9600; break;
	352	case B19200: uiPortSpeed = 19200; break;
	353	case B38400: uiPortSpeed = 38400; break;
	354	# ifdef B57600
	355	case B57600: uiPortSpeed = 57600; break;
	356	# endif
	357	# ifdef B115200
	358	case B115200: uiPortSpeed = 115200; break;
	359	# endif
	360	# ifdef B230400
	361	case B230400: uiPortSpeed = 230400; break;
	362	# endif
	363	# ifdef B460800
	364	case B460800: uiPortSpeed = 460800; break;
	365	# endif
	366	# ifdef B921600
	367	case B921600: uiPortSpeed = 921600; break;
	368	# endif
	369	default: return 0;
	370	};
	371	return uiPortSpeed;
5bcc76c4	372	}
	373
	374	#endif
067bfc8b	375