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Fix r/w timeout for Windows ser_send()

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stefanrueger
2025-05-13 00:18:14 +02:00
parent 127f40ee6d
commit da7669f3dc
1 changed files with 13 additions and 1 deletions
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14
src/ser_win32.c
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@@ -81,6 +81,15 @@ static BOOL serial_w32SetTimeOut(HANDLE hComPort, DWORD timeout) { // ms
return SetCommTimeouts(hComPort, &ctmo);
}
static BOOL serial_w32SetRWTimeOut(HANDLE hComPort, DWORD timeout) { // ms
COMMTIMEOUTS ctmo = {0};
ctmo.ReadTotalTimeoutConstant = timeout;
ctmo.WriteTotalTimeoutConstant = timeout;
return SetCommTimeouts(hComPort, &ctmo);
}
static int ser_setparams(const union filedescriptor *fd, long baud, unsigned long cflags) {
if(cx->ser_serial_over_ethernet)
return -ENOTTY;
@@ -343,7 +352,10 @@ static int ser_send(const union filedescriptor *fd, const unsigned char *buf, si
if(verbose >= MSG_TRACE)
trace_buffer(__func__, buf, len);
serial_w32SetTimeOut(hComPort, 500);
if(!serial_w32SetRWTimeOut(hComPort, (len > 5? len: 5)*100)) {
pmsg_error("cannot set r/w timeout for serial port\n");
return -1;
}
if(!WriteFile(hComPort, buf, len, &written, NULL)) {
pmsg_error("unable to write: %s\n", "sorry no info avail"); // TODO