fsfw/datalinklayer/Farm1StateOpen.cpp

50 lines
1.2 KiB
C++

/**
* @file Farm1StateOpen.cpp
* @brief This file defines the Farm1StateOpen class.
* @date 24.04.2013
* @author baetz
*/
#include "ClcwIF.h"
#include "Farm1StateOpen.h"
#include "TcTransferFrame.h"
#include "VirtualChannelReception.h"
Farm1StateOpen::Farm1StateOpen(VirtualChannelReception* setMyVC) : myVC(setMyVC) {
}
ReturnValue_t Farm1StateOpen::handleADFrame(TcTransferFrame* frame,
ClcwIF* clcw) {
int8_t diff = frame->getSequenceNumber() - myVC->vR;
if (diff == 0 ) {
myVC->vR++;
clcw->setRetransmitFlag(false);
return RETURN_OK;
} else if (diff < myVC->positiveWindow && diff > 0 ) {
clcw->setRetransmitFlag(true);
return NS_POSITIVE_W;
} else if (diff < 0 && diff >= -myVC->negativeWindow) {
return NS_NEGATIVE_W;
} else {
clcw->setLockoutFlag(true);
myVC->currentState = &(myVC->lockoutState);
return NS_LOCKOUT;
}
}
ReturnValue_t Farm1StateOpen::handleBCUnlockCommand( ClcwIF* clcw ) {
myVC->farmBCounter++;
clcw->setRetransmitFlag(false);
return BC_IS_UNLOCK_COMMAND;
}
ReturnValue_t Farm1StateOpen::handleBCSetVrCommand( ClcwIF* clcw, uint8_t vr ) {
myVC->farmBCounter++;
clcw->setRetransmitFlag(false);
myVC->vR = vr;
return BC_IS_SET_VR_COMMAND;
}