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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | /* * (C) Copyright 2000 * Murray Jensen <Murray.Jensen@csiro.au> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <unistd.h> #include <string.h> #include <fcntl.h> #include <sys/time.h> #include "serial.h" #if defined(__sun__) || \ defined(__OpenBSD__) || \ defined(__FreeBSD__) || \ defined(__NetBSD__) || \ defined(__APPLE__) static struct termios tios = { BRKINT, 0, B115200|CS8|CREAD, 0, { 0 } }; #else static struct termios tios = { BRKINT, 0, B115200|CS8|CREAD, 0, 0 }; #endif static struct speedmap { char *str; speed_t val; } speedmap[] = { { "50", B50 }, { "75", B75 }, { "110", B110 }, { "134", B134 }, { "150", B150 }, { "200", B200 }, { "300", B300 }, { "600", B600 }, { "1200", B1200 }, { "1800", B1800 }, { "2400", B2400 }, { "4800", B4800 }, { "9600", B9600 }, { "19200", B19200 }, { "38400", B38400 }, { "57600", B57600 }, #ifdef B76800 { "76800", B76800 }, #endif { "115200", B115200 }, #ifdef B153600 { "153600", B153600 }, #endif { "230400", B230400 }, #ifdef B307200 { "307200", B307200 }, #endif #ifdef B460800 { "460800", B460800 } #endif }; static int nspeeds = sizeof speedmap / sizeof speedmap[0]; speed_t cvtspeed(char *str) { struct speedmap *smp = speedmap, *esmp = &speedmap[nspeeds]; while (smp < esmp) { if (strcmp(str, smp->str) == 0) return (smp->val); smp++; } return B0; } int serialopen(char *device, speed_t speed) { int fd; if (cfsetospeed(&tios, speed) < 0) return -1; if ((fd = open(device, O_RDWR)) < 0) return -1; if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) { (void)close(fd); return -1; } return fd; } int serialreadchar(int fd, int timeout) { fd_set fds; struct timeval tv; int n; char ch; tv.tv_sec = timeout; tv.tv_usec = 0; FD_ZERO(&fds); FD_SET(fd, &fds); /* this is a fucking horrible quick hack - fix this */ if ((n = select(fd + 1, &fds, 0, 0, &tv)) < 0) return SERIAL_ERROR; if (n == 0) return SERIAL_TIMEOUT; if ((n = read(fd, &ch, 1)) < 0) return SERIAL_ERROR; if (n == 0) return SERIAL_EOF; return ch; } int serialwrite(int fd, char *buf, int len) { int n; do { n = write(fd, buf, len); if (n < 0) return 1; len -= n; buf += n; } while (len > 0); return 0; } int serialclose(int fd) { return close(fd); } |