v8::Handle<v8::Value> GPIO::SetMode(const v8::Arguments& args) {
v8::HandleScope scope;
GPIO* obj = ObjectWrap::Unwrap<GPIO>(args.This());
if (!obj->opened) {
std::string err_msg = "GPIO " + obj->pin_num + " is not opened.";
v8::ThrowException(v8::Exception::Error(v8::String::New(err_msg.c_str())));
return scope.Close(v8::Undefined());
}
if (args.Length() < 1) {
v8::ThrowException(v8::Exception::TypeError(v8::String::New("Wrong number of arguments")));
return scope.Close(v8::Undefined());
}
if (!args[0]->IsString()) {
v8::ThrowException(v8::Exception::TypeError(v8::String::New("Wrong arguments")));
return scope.Close(v8::Undefined());
}
std::string mode(*v8::String::Utf8Value(args[0]));
int res = obj->setMode(mode);
if (res < 0) {
std::string err_msg = "OPERATION FAILED: Unable to change GPIO " + obj->pin_num + " mode.";
v8::ThrowException(v8::Exception::Error(v8::String::New(err_msg.c_str())));
return scope.Close(v8::Undefined());
}
obj->log("GPIO " + obj->pin_num + " mode changed to " + mode + ".");
return scope.Close(v8::Integer::New(res));
}
v8::Handle<v8::Value> GPIO::Close(const v8::Arguments& args)
{
v8::HandleScope scope;
GPIO* obj = ObjectWrap::Unwrap<GPIO>(args.This());
int res = obj->close();
if (res < 0) {
std::string err_msg = "OPERATION FAILED: Unable to close GPIO " + obj->pin_num + ".";
v8::ThrowException(v8::Exception::Error(v8::String::New(err_msg.c_str())));
return scope.Close(v8::Undefined());
}
obj->log("GPIO " + obj->pin_num + " closed.");
return scope.Close(v8::Integer::New(res));
}
v8::Handle<v8::Value> GPIO::Read(const v8::Arguments& args) {
v8::HandleScope scope;
GPIO* obj = ObjectWrap::Unwrap<GPIO>(args.This());
if (!obj->opened) {
std::string err_msg = "GPIO " + obj->pin_num + " is not opened.";
v8::ThrowException(v8::Exception::Error(v8::String::New(err_msg.c_str())));
return scope.Close(v8::Undefined());
}
if (obj->mode == GPIO::OUT) {
std::string err_msg = "GPIO " + obj->pin_num + " is not in the right mode";
v8::ThrowException(v8::Exception::Error(v8::String::New(err_msg.c_str())));
return scope.Close(v8::Undefined());
}
int res = obj->read();
std::ostringstream ss;
ss << res;
if (res < 0) {
std::string err_msg = "OPERATION FAILED: Unable to change GPIO " + obj->pin_num + " value.";
v8::ThrowException(v8::Exception::Error(v8::String::New(err_msg.c_str())));
return scope.Close(v8::Undefined());
}
obj->log("GPIO " + obj->pin_num + " value changed to " + ss.str() + ".");
return scope.Close(v8::Integer::New(res));
}
v8::Handle<v8::Value> GPIO::Write(const v8::Arguments& args) {
v8::HandleScope scope;
GPIO* obj = ObjectWrap::Unwrap<GPIO>(args.This());
if (args.Length() < 1) {
v8::ThrowException(v8::Exception::TypeError(v8::String::New("Wrong number of arguments")));
return scope.Close(v8::Undefined());
}
if (!args[0]->IsNumber()) {
v8::ThrowException(v8::Exception::TypeError(v8::String::New("Wrong arguments")));
return scope.Close(v8::Undefined());
}
v8::Local<v8::Integer> param1 = args[0]->ToInteger();
int value = param1->IntegerValue();
int res = obj->write(value);
if (res < 0) {
std::string err_msg = "OPERATION FAILED: Unable to change GPIO " + obj->pin_num + " value.";
v8::ThrowException(v8::Exception::Error(v8::String::New(err_msg.c_str())));
return scope.Close(v8::Undefined());
}
std::ostringstream ss;
ss << value;
obj->log("GPIO " + obj->pin_num + " value changed to " + ss.str() + ".");
return scope.Close(v8::Integer::New(res));
}