ParallelPort::ParallelPort(QSettings &s) : settings(s)
{
port = defaultParallelPort.toULong();
initialized = false;
initSuccess = false;
stereoPinStatus=false;
hLib = LoadLibraryA("inpout32.dll");
if (hLib == NULL) {
QString tmp = "LoadLibrary inpout32.dll failed";
emit(parallelPortError(tmp));
return;
}
// get the address of the function
inp32fp = (inpfuncPtr) GetProcAddress(hLib, "Inp32");
if (inp32fp == NULL) {
QString tmp = "GetProcAddress for Inp32 Failed.";
emit(parallelPortError(tmp));
return;
}
oup32fp = (oupfuncPtr) GetProcAddress(hLib, "Out32");
if (oup32fp == NULL) {
QString tmp = "GetProcAddress for Oup32 Failed.";
emit(parallelPortError(tmp));
return;
}
initSuccess = true;
}
ParallelPort::~ParallelPort()
{
QString port= settings.value(s_radios_pport,defaultParallelPort).toString();
if (parallelFD != -1) {
int err = ioctl(parallelFD, PPRELEASE);
if (err == -1) {
QString tmp = "Error releasing " + port;
emit(parallelPortError(tmp));
return;
}
err = close(parallelFD);
if (err == -1) {
QString tmp = "Error closing " + port;
emit(parallelPortError(tmp));
return;
}
}
}
/*!
set a pin p=(2:9) high
*/
void ParallelPort::PinHigh(const int p)
{
if (!initialized | (p < 2) | (p > 9)) return;
char data = 0;
int err = ioctl(parallelFD, PPRDATA, &data); // read port data
if (err == -1) {
QString tmp = "ERROR: Can't read from " + settings.value(s_radios_pport,defaultParallelPort).toString();
emit(parallelPortError(tmp));
return;
}
char b = 1 << (p - 2);
if (!(data & b)) {
data += b;
err = ioctl(parallelFD, PPWDATA, &data);
if (err == -1) {
QString tmp = "ERROR: Can't write to " + settings.value(s_radios_pport,defaultParallelPort).toString();
emit(parallelPortError(tmp));
}
}
}
void ParallelPort::initialize()
{
bool ok=false;
QString pstring=settings.value(s_radios_pport,defaultParallelPort).toString();
port= pstring.toULong(&ok,0);
if (!ok) {
port = defaultParallelPort.toULong();
QString tmp = "port <" + pstring + "> invalid, using port "+defaultParallelPort;
emit(parallelPortError(tmp));
}
initialized=true;
}
/*!
Note that user must be in lp group to access /dev/parport
Will attempt to drop privleges after getting port access.
*/
void ParallelPort::initialize()
{
QString port= settings.value(s_radios_pport,defaultParallelPort).toString();
if (parallelFD != -1) {
int err = ioctl(parallelFD, PPRELEASE);
if (err == -1) {
QString tmp = "Error releasing " + port;
emit(parallelPortError(tmp));
return;
}
err = close(parallelFD);
if (err == -1) {
QString tmp = "Error closing " + port;
emit(parallelPortError(tmp));
return;
}
}
parallelFD = open(port.toAscii().data(), O_RDWR);
if (parallelFD == -1) {
QString tmp = "Can't open " + port;
emit(parallelPortError(tmp));
return;
}
int err = ioctl(parallelFD, PPCLAIM);
if (err == -1) {
QString tmp = "ERROR: Can't claim " + port;
emit(parallelPortError(tmp));
return;
}
int mode = IEEE1284_MODE_COMPAT;
if (ioctl(parallelFD, PPNEGOT, &mode)) {
QString tmp = "ERROR: can't set " + port + " to IEEE1284 compat mode";
emit(parallelPortError(tmp));
return;
}
initialized = true;
}