mirror of https://github.com/saitohirga/WSJT-X.git
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/*
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* WSJT is Copyright (c) 2001-2006 by Joseph H. Taylor, Jr., K1JT,
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* and is licensed under the GNU General Public License (GPL).
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include "conf.h" /* XXX Could use CFLAGS later instead --db */
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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/* First cut, note that this only distinguishes Linux from BSDs,
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* it will be done better later on using configure. N.B. that OSX
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* will come up as BSD but I think this is also the right serial port
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* for OSX. -db
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*/
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#if defined(BSD)
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#define TTYNAME "/dev/ttyd%d"
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#else
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#include <sys/io.h>
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#define TTYNAME "/dev/ttyS%d"
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#endif
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/* Not quite right for size but '%d + 1' should be plenty enough -db */
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#define TTYNAME_SIZE sizeof(TTYNAME)+1
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int ptt_(int *nport, int *ntx, int *iptt)
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{
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static int nopen=0;
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int control = TIOCM_RTS | TIOCM_DTR;
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int fd;
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char s[TTYNAME_SIZE];
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if(*nport < 0) {
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*iptt=*ntx;
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return(0);
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}
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if(*ntx && (!nopen)) {
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snprintf(s, TTYNAME_SIZE, TTYNAME, *nport);
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s[TTYNAME_SIZE] = '\0';
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//open the device
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if ((fd = open(s, O_RDWR | O_NDELAY)) < 0) {
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fprintf(stderr, "device not found");
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return(1);
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}
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nopen=1;
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return(0);
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}
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if(*ntx && nopen) {
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// printf("Set DTR/RTS %d %d\n",TIOCMBIS,control);
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ioctl(fd, TIOCMBIS, &control); // Set DTR and RTS
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*iptt=1;
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}
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else {
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// printf("Clear DTR/RTS %d %d\n",TIOCMBIC,control);
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ioctl(fd, TIOCMBIC, &control);
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close(fd);
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*iptt=0;
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nopen=0;
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}
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return(0);
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}
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