SHS/pip
4
3
Fork 0
Code Issues 67 Pull Requests 1 Actions Releases Wiki Activity

PISerial Windows read fix

Browse Source
This commit is contained in:
Пелипенко Иван
2022-12-18 14:23:19 +03:00
parent 886eb06880
commit a98176f513
1 changed files with 21 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
libs/main/io_devices/piserial.cpp
View File

@@ -830,9 +830,15 @@ void PISerial::applySettings() {
void PISerial::setTimeouts() {
#ifdef WINDOWS
COMMTIMEOUTS times;
times.ReadIntervalTimeout = isOptionSet(BlockingRead) ? vtime : MAXDWORD;
times.ReadTotalTimeoutConstant = isOptionSet(BlockingRead) ? 0 : 1;
times.ReadTotalTimeoutMultiplier = isOptionSet(BlockingRead) ? 0 : MAXDWORD;
if (isOptionSet(BlockingRead)) {
times.ReadIntervalTimeout = MAXDWORD;
times.ReadTotalTimeoutConstant = vtime;
times.ReadTotalTimeoutMultiplier = MAXDWORD;
} else {
times.ReadIntervalTimeout = MAXDWORD;
times.ReadTotalTimeoutConstant = 0;
times.ReadTotalTimeoutMultiplier = 0;
}
times.WriteTotalTimeoutConstant = isOptionSet(BlockingWrite) ? 0 : 1;
times.WriteTotalTimeoutMultiplier = 0;
if (SetCommTimeouts(PRIVATE->hCom, &times) == -1) piCoutObj << "Unable to set timeouts for \"" << path() << "\"";
@@ -860,24 +866,25 @@ ssize_t PISerial::readDevice(void * read_to, ssize_t max_size) {
#ifdef WINDOWS
if (!canRead()) return -1;
if (sending) return -1;
// piCoutObj << "read ..." << PRIVATE->hCom;
// piCoutObj << "read ..." << PRIVATE->hCom << max_size;
memset(&(PRIVATE->overlap), 0, sizeof(PRIVATE->overlap));
PRIVATE->overlap.hEvent = PRIVATE->event.getEvent();
ReadFile(PRIVATE->hCom, read_to, max_size, NULL, &(PRIVATE->overlap));
PRIVATE->readed = 0;
ReadFile(PRIVATE->hCom, read_to, max_size, NULL, &(PRIVATE->overlap));
DWORD err = GetLastError();
// piCoutObj << "read" << err;
if (err == ERROR_BAD_COMMAND || err == ERROR_ACCESS_DENIED) {
piCoutObj << "read error" << errorString();
stop();
close();
return 0;
}
// piCout << "wait ...";
if (PRIVATE->event.wait()) {
GetOverlappedResult(PRIVATE->hCom, &(PRIVATE->overlap), &(PRIVATE->readed), FALSE);
} else
return -1;
// piCoutObj << "read done" << PRIVATE->readed;
DWORD err = GetLastError();
if (err == ERROR_TIMEOUT && PRIVATE->readed == 0) return 0;
if (err == ERROR_BAD_COMMAND || err == ERROR_ACCESS_DENIED) {
piCoutObj << "read error" << (PRIVATE->readed) << errorString();
stop();
close();
return 0;
}
// piCoutObj << "read" << (PRIVATE->readed) << errorString();
return PRIVATE->readed;
#else