mirror of https://github.com/saitohirga/WSJT-X.git
45 lines
857 B
C
45 lines
857 B
C
#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 <sys/io.h>
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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[11];
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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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sprintf(s,"/dev/ttyS%d",*nport);
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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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