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| /*
| * (C) Copyright 2000
| * Murray Jensen <Murray.Jensen@csiro.au>
| *
| * SPDX-License-Identifier: GPL-2.0+
| */
|
| #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);
| }
|
|
