mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-29 23:58:39 -05:00
59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
|
#include <windows.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
int ptt_(int *nport, int *ntx, int *ndtr, int *iptt)
|
||
|
|
{
|
||
|
|
static HANDLE hFile;
|
||
|
|
static int open=0, nhold=0;
|
||
|
|
char s[10];
|
||
|
|
int i3,i4,i5,i6,i9,i00;
|
||
|
|
|
||
|
|
if(*nport==0) {
|
||
|
|
*iptt=*ntx;
|
||
|
|
return(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
nhold=0;
|
||
|
|
if(*nport>100) nhold=1;
|
||
|
|
|
||
|
|
if(*ntx && (!open)) {
|
||
|
|
sprintf(s,"\\\\.\\COM%d",*nport%100);
|
||
|
|
hFile=CreateFile(
|
||
|
|
TEXT(s),
|
||
|
|
GENERIC_WRITE,
|
||
|
|
0,
|
||
|
|
NULL,
|
||
|
|
OPEN_EXISTING,
|
||
|
|
FILE_ATTRIBUTE_NORMAL,
|
||
|
|
NULL
|
||
|
|
);
|
||
|
|
if(hFile==INVALID_HANDLE_VALUE) {
|
||
|
|
printf("PTT: Cannot open COM port %d.\n",*nport%100);
|
||
|
|
return(-1);
|
||
|
|
}
|
||
|
|
open=1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(*ntx && open) {
|
||
|
|
if(*ndtr)
|
||
|
|
EscapeCommFunction(hFile,5); //set DTR
|
||
|
|
else
|
||
|
|
EscapeCommFunction(hFile,3); //set RTS
|
||
|
|
*iptt=1;
|
||
|
|
}
|
||
|
|
|
||
|
|
else {
|
||
|
|
if(*ndtr)
|
||
|
|
EscapeCommFunction(hFile,6); //clear DTR
|
||
|
|
else
|
||
|
|
EscapeCommFunction(hFile,4); //clear RTS
|
||
|
|
EscapeCommFunction(hFile,9); //clear BREAK
|
||
|
|
if(nhold==0) {
|
||
|
|
i00=CloseHandle(hFile);
|
||
|
|
open=0;
|
||
|
|
}
|
||
|
|
*iptt=0;
|
||
|
|
}
|
||
|
|
return(0);
|
||
|
|
}
|