[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>

// Fix missing definition on OS X.
// Taken from https://github.com/unbit/uwsgi/commit/b608eb1772641d525bfde268fe9d6d8d0d5efde7
#ifndef SOL_TCP
#define SOL_TCP IPPROTO_TCP
#endif

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
a015ef37 JMP	58	// Fix missing definition on OS X.
	59	// Taken from https://github.com/unbit/uwsgi/commit/b608eb1772641d525bfde268fe9d6d8d0d5efde7
	60	#ifndef SOL_TCP
	61	#define SOL_TCP IPPROTO_TCP
	62	#endif
	63
5bcc76c4	64	typedef struct termios term_info;
	65	typedef struct {
	66	int fd; // Serial port file descriptor
	67	term_info tiOld; // Terminal info before using the port
	68	term_info tiNew; // Terminal info during the transaction
	69	} serial_port_unix;
	70
	71	// Set time-out on 30 miliseconds
13dbdd6b	72	const struct timeval timeout = {
5bcc76c4	73	.tv_sec = 0, // 0 second
d664113a	74	.tv_usec = 300000 // 300000 micro seconds
5bcc76c4	75	};
5bcc76c4	76
5bcc76c4	77	serial_port uart_open(const char* pcPortName)
	78	{
	79	serial_port_unix* sp = malloc(sizeof(serial_port_unix));
5bcc76c4	80	if (sp == 0) return INVALID_SERIAL_PORT;
13dbdd6b	81
d664113a VS	82	if (memcmp(pcPortName, "tcp:", 4) == 0) {
	83	struct addrinfo addr, rp;
	84	char *addrstr = strdup(pcPortName + 4);
	85	if (addrstr == NULL) {
	86	printf("Error: strdup\n");
	87	return INVALID_SERIAL_PORT;
	88	}
	89	char *colon = strrchr(addrstr, ':');
	90	char *portstr;
	91	if (colon) {
	92	portstr = colon + 1;
	93	*colon = '\0';
	94	} else
	95	portstr = "7901";
	96
	97	int s = getaddrinfo(addrstr, portstr, NULL, &addr);
	98	if (s != 0) {
	99	printf("Error: getaddrinfo: %s\n", gai_strerror(s));
	100	return INVALID_SERIAL_PORT;
	101	}
	102
	103	int sfd;
	104	for (rp = addr; rp != NULL; rp = rp->ai_next) {
	105	sfd = socket(rp->ai_family, rp->ai_socktype,
	106	rp->ai_protocol);
	107	if (sfd == -1)
	108	continue;
	109
	110	if (connect(sfd, rp->ai_addr, rp->ai_addrlen) != -1)
	111	break;
	112
	113	close(sfd);
	114	}
	115
	116	if (rp == NULL) { /* No address succeeded */
	117	printf("Error: Could not connect\n");
	118	return INVALID_SERIAL_PORT;
	119	}
	120
	121	freeaddrinfo(addr);
	122	free(addrstr);
	123
	124	sp->fd = sfd;
	125
	126	int one = 1;
	127	setsockopt(sp->fd, SOL_TCP, TCP_NODELAY, &one, sizeof(one));
	128	return sp;
	129	}
	130
5bcc76c4	131	sp->fd = open(pcPortName, O_RDWR \| O_NOCTTY \| O_NDELAY \| O_NONBLOCK);
62ee4fed	132	if(sp->fd == -1) {
5bcc76c4	133	uart_close(sp);
	134	return INVALID_SERIAL_PORT;
	135	}
62ee4fed	136
	137	// Finally figured out a way to claim a serial port interface under unix
	138	// We just try to set a (advisory) lock on the file descriptor
	139	struct flock fl;
	140	fl.l_type = F_WRLCK;
	141	fl.l_whence = SEEK_SET;
	142	fl.l_start = 0;
	143	fl.l_len = 0;
	144	fl.l_pid = getpid();
13dbdd6b	145
62ee4fed	146	// Does the system allows us to place a lock on this file descriptor
	147	if (fcntl(sp->fd, F_SETLK, &fl) == -1) {
	148	// A conflicting lock is held by another process
ca4714cd	149	free(sp);
62ee4fed	150	return CLAIMED_SERIAL_PORT;
5bcc76c4	151	}
62ee4fed	152
	153	// Try to retrieve the old (current) terminal info struct
	154	if(tcgetattr(sp->fd,&sp->tiOld) == -1) {
5bcc76c4	155	uart_close(sp);
62ee4fed	156	return INVALID_SERIAL_PORT;
5bcc76c4	157	}
13dbdd6b	158
62ee4fed	159	// Duplicate the (old) terminal info struct
5bcc76c4	160	sp->tiNew = sp->tiOld;
13dbdd6b	161
62ee4fed	162	// Configure the serial port
5bcc76c4	163	sp->tiNew.c_cflag = CS8 \| CLOCAL \| CREAD;
62ee4fed	164	sp->tiNew.c_iflag = IGNPAR;
5bcc76c4	165	sp->tiNew.c_oflag = 0;
5bcc76c4	166	sp->tiNew.c_lflag = 0;
62ee4fed	167
	168	// Block until n bytes are received
	169	sp->tiNew.c_cc[VMIN] = 0;
	170	// Block until a timer expires (n * 100 mSec.)
	171	sp->tiNew.c_cc[VTIME] = 0;
0a24369c	172
62ee4fed	173	// Try to set the new terminal info struct
62ee4fed	174	if(tcsetattr(sp->fd,TCSANOW,&sp->tiNew) == -1) {
5bcc76c4	175	uart_close(sp);
	176	return INVALID_SERIAL_PORT;
	177	}
13dbdd6b	178
62ee4fed	179	// Flush all lingering data that may exist
0a24369c	180	tcflush(sp->fd, TCIOFLUSH);
62ee4fed	181
5bcc76c4	182	return sp;
	183	}
	184
62ee4fed	185	void uart_close(const serial_port sp) {
	186	serial_port_unix* spu = (serial_port_unix*)sp;
	187	tcflush(spu->fd,TCIOFLUSH);
	188	tcsetattr(spu->fd,TCSANOW,&(spu->tiOld));
	189	struct flock fl;
	190	fl.l_type = F_UNLCK;
	191	fl.l_whence = SEEK_SET;
	192	fl.l_start = 0;
	193	fl.l_len = 0;
	194	fl.l_pid = getpid();
	195	fcntl(spu->fd, F_SETLK, &fl);
	196	close(spu->fd);
	197	free(sp);
	198	}
	199
f5ecd97b	200	bool uart_receive(const serial_port sp, uint8_t* pbtRx, size_t pszMaxRxLen, size_t* pszRxLen) {
5bcc76c4	201	int res;
	202	int byteCount;
	203	fd_set rfds;
	204	struct timeval tv;
13dbdd6b	205
13dbdd6b	206	// Reset the output count
5bcc76c4	207	*pszRxLen = 0;
13dbdd6b	208
5bcc76c4	209	do {
	210	// Reset file descriptor
	211	FD_ZERO(&rfds);
	212	FD_SET(((serial_port_unix*)sp)->fd,&rfds);
	213	tv = timeout;
	214	res = select(((serial_port_unix*)sp)->fd+1, &rfds, NULL, NULL, &tv);
13dbdd6b	215
5bcc76c4	216	// Read error
5bcc76c4	217	if (res < 0) {
5bcc76c4	218	return false;
5bcc76c4	219	}
babfcaa0	220
5bcc76c4	221	// Read time-out
	222	if (res == 0) {
	223	if (*pszRxLen == 0) {
	224	// Error, we received no data
5bcc76c4	225	return false;
	226	} else {
	227	// We received some data, but nothing more is available
	228	return true;
	229	}
	230	}
babfcaa0	231
5bcc76c4	232	// Retrieve the count of the incoming bytes
	233	res = ioctl(((serial_port_unix*)sp)->fd, FIONREAD, &byteCount);
	234	if (res < 0) return false;
067bfc8b MF	235
	236	// Cap the number of bytes, so we don't overrun the buffer
	237	if (pszMaxRxLen - (*pszRxLen) < byteCount) {
	238	byteCount = pszMaxRxLen - (*pszRxLen);
	239	}
babfcaa0	240
5bcc76c4	241	// There is something available, read the data
067bfc8b	242	res = read(((serial_port_unix)sp)->fd, pbtRx+(pszRxLen), byteCount);
babfcaa0	243
5bcc76c4	244	// Stop if the OS has some troubles reading the data
5bcc76c4	245	if (res <= 0) return false;
babfcaa0	246
5bcc76c4	247	*pszRxLen += res;
babfcaa0	248
067bfc8b MF	249	if (*pszRxLen == pszMaxRxLen) {
	250	// We have all the data we wanted.
	251	return true;
	252	}
13dbdd6b	253
5bcc76c4	254	} while (byteCount);
babfcaa0	255
5bcc76c4	256	return true;
	257	}
	258
f5ecd97b	259	bool uart_send(const serial_port sp, const uint8_t* pbtTx, const size_t szTxLen) {
5bcc76c4	260	int32_t res;
	261	size_t szPos = 0;
	262	fd_set rfds;
	263	struct timeval tv;
13dbdd6b	264
62ee4fed	265	while (szPos < szTxLen) {
5bcc76c4	266	// Reset file descriptor
	267	FD_ZERO(&rfds);
	268	FD_SET(((serial_port_unix*)sp)->fd,&rfds);
	269	tv = timeout;
	270	res = select(((serial_port_unix*)sp)->fd+1, NULL, &rfds, NULL, &tv);
13dbdd6b	271
5bcc76c4	272	// Write error
5bcc76c4	273	if (res < 0) {
5bcc76c4	274	return false;
5bcc76c4	275	}
13dbdd6b	276
5bcc76c4	277	// Write time-out
5bcc76c4	278	if (res == 0) {
5bcc76c4	279	return false;
5bcc76c4	280	}
13dbdd6b	281
5bcc76c4	282	// Send away the bytes
	283	res = write(((serial_port_unix*)sp)->fd,pbtTx+szPos,szTxLen-szPos);
	284
	285	// Stop if the OS has some troubles sending the data
	286	if (res <= 0) return false;
13dbdd6b	287
5bcc76c4	288	szPos += res;
	289	}
	290	return true;
	291	}
	292
13dbdd6b	293	bool uart_set_speed(serial_port sp, const uint32_t uiPortSpeed) {
067bfc8b MF	294	const serial_port_unix* spu = (serial_port_unix*)sp;
	295	speed_t stPortSpeed;
	296	switch (uiPortSpeed) {
	297	case 0: stPortSpeed = B0; break;
	298	case 50: stPortSpeed = B50; break;
	299	case 75: stPortSpeed = B75; break;
	300	case 110: stPortSpeed = B110; break;
	301	case 134: stPortSpeed = B134; break;
	302	case 150: stPortSpeed = B150; break;
	303	case 300: stPortSpeed = B300; break;
	304	case 600: stPortSpeed = B600; break;
	305	case 1200: stPortSpeed = B1200; break;
	306	case 1800: stPortSpeed = B1800; break;
	307	case 2400: stPortSpeed = B2400; break;
	308	case 4800: stPortSpeed = B4800; break;
	309	case 9600: stPortSpeed = B9600; break;
	310	case 19200: stPortSpeed = B19200; break;
	311	case 38400: stPortSpeed = B38400; break;
	312	# ifdef B57600
	313	case 57600: stPortSpeed = B57600; break;
	314	# endif
	315	# ifdef B115200
	316	case 115200: stPortSpeed = B115200; break;
	317	# endif
	318	# ifdef B230400
	319	case 230400: stPortSpeed = B230400; break;
	320	# endif
	321	# ifdef B460800
	322	case 460800: stPortSpeed = B460800; break;
	323	# endif
	324	# ifdef B921600
	325	case 921600: stPortSpeed = B921600; break;
	326	# endif
	327	default: return false;
	328	};
	329	struct termios ti;
	330	if (tcgetattr(spu->fd,&ti) == -1) return false;
	331	// Set port speed (Input and Output)
	332	cfsetispeed(&ti,stPortSpeed);
	333	cfsetospeed(&ti,stPortSpeed);
	334	return (tcsetattr(spu->fd,TCSANOW,&ti) != -1);
5bcc76c4	335	}
5bcc76c4	336
13dbdd6b	337	uint32_t uart_get_speed(const serial_port sp) {
067bfc8b MF	338	struct termios ti;
	339	uint32_t uiPortSpeed;
	340	const serial_port_unix* spu = (serial_port_unix*)sp;
	341	if (tcgetattr(spu->fd,&ti) == -1) return 0;
	342	// Set port speed (Input)
	343	speed_t stPortSpeed = cfgetispeed(&ti);
	344	switch (stPortSpeed) {
	345	case B0: uiPortSpeed = 0; break;
	346	case B50: uiPortSpeed = 50; break;
	347	case B75: uiPortSpeed = 75; break;
	348	case B110: uiPortSpeed = 110; break;
	349	case B134: uiPortSpeed = 134; break;
	350	case B150: uiPortSpeed = 150; break;
	351	case B300: uiPortSpeed = 300; break;
	352	case B600: uiPortSpeed = 600; break;
	353	case B1200: uiPortSpeed = 1200; break;
	354	case B1800: uiPortSpeed = 1800; break;
	355	case B2400: uiPortSpeed = 2400; break;
	356	case B4800: uiPortSpeed = 4800; break;
	357	case B9600: uiPortSpeed = 9600; break;
	358	case B19200: uiPortSpeed = 19200; break;
	359	case B38400: uiPortSpeed = 38400; break;
	360	# ifdef B57600
	361	case B57600: uiPortSpeed = 57600; break;
	362	# endif
	363	# ifdef B115200
	364	case B115200: uiPortSpeed = 115200; break;
	365	# endif
	366	# ifdef B230400
	367	case B230400: uiPortSpeed = 230400; break;
	368	# endif
	369	# ifdef B460800
	370	case B460800: uiPortSpeed = 460800; break;
	371	# endif
	372	# ifdef B921600
	373	case B921600: uiPortSpeed = 921600; break;
	374	# endif
	375	default: return 0;
	376	};
	377	return uiPortSpeed;
5bcc76c4	378	}
	379
	380	#endif
067bfc8b	381