sl@0: 
sl@0: #include "FutabaVfd.h"
sl@0: //#include <stdlib.h>
sl@0: #include <string.h>
sl@0: 
sl@0: 
sl@0: #ifdef DEBUG_FRAME_DIFF
sl@0: #include <QImage>
sl@0: #include <QTextStream>
sl@0: #endif
sl@0: 
sl@0: 
sl@0: const int KNumberOfFrameBeforeDiffAlgo = 3;
sl@0: 
sl@0: //
sl@0: //
sl@0: //
sl@0: 
sl@0: FutabaVfdCommand::FutabaVfdCommand():/*iBuffer(NULL),*/iSize(0),iMaxSize(0)
sl@0:     {
sl@0:     }
sl@0: 
sl@0: FutabaVfdCommand::~FutabaVfdCommand()
sl@0:     {
sl@0:     //Delete();
sl@0:     }
sl@0: 
sl@0: 
sl@0: /**
sl@0: 
sl@0: */
sl@0: void FutabaVfdCommand::Reset()
sl@0:     {
sl@0:     memset(iReports,0,sizeof(iReports));
sl@0:     }
sl@0: 
sl@0: 
sl@0: 
sl@0: /**
sl@0: 
sl@0: */
sl@0: /*
sl@0: void FutabaVfdCommand::Create(int aMaxSize)
sl@0:     {
sl@0:     iBuffer=new unsigned char[aMaxSize];
sl@0:     if (iBuffer)
sl@0:         {
sl@0:         iMaxSize = aMaxSize;
sl@0:         iSize = 0;
sl@0:         }
sl@0:     }
sl@0: */
sl@0: 
sl@0: /**
sl@0: 
sl@0: */
sl@0: /*
sl@0: void FutabaVfdCommand::Delete()
sl@0: {
sl@0:     delete[] iBuffer;
sl@0:     iBuffer = NULL;
sl@0:     iMaxSize = 0;
sl@0:     iSize = 0;
sl@0: }
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: //
sl@0: // class GP1212A01A
sl@0: //
sl@0: 
sl@0: GP1212A01A::GP1212A01A():
sl@0: 	iDisplayPositionX(0),iDisplayPositionY(0),
sl@0:     iOffScreenMode(true),
sl@0:     iUseFrameDifferencing(true),
sl@0:     iFrameNext(NULL),
sl@0:     iFrameCurrent(NULL),
sl@0:     iFramePrevious(NULL),
sl@0:     iFrameAlpha(NULL),
sl@0:     iFrameBeta(NULL),
sl@0:     iFrameGamma(NULL),
sl@0:     iNeedFullFrameUpdate(0),
sl@0:     iRequest(ERequestNone),iPowerOn(false)
sl@0: 	{
sl@0: 	//ResetBuffers();
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: */
sl@0: GP1212A01A::~GP1212A01A()
sl@0: 	{
sl@0:     delete iFrameAlpha;
sl@0:     iFrameAlpha=NULL;
sl@0:     //
sl@0:     delete iFrameBeta;
sl@0:     iFrameBeta=NULL;
sl@0:     //
sl@0:     delete iFrameGamma;
sl@0:     iFrameGamma=NULL;
sl@0:     //
sl@0:     iFrameNext=NULL;
sl@0:     iFrameCurrent=NULL;
sl@0:     iFramePrevious=NULL;
sl@0:     //
sl@0:     iNeedFullFrameUpdate=0;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: */
sl@0: int GP1212A01A::Open()
sl@0: 	{
sl@0: 	int success = HidDevice::Open(KFutabaVendorId,KFutabaProductIdGP1212A01A,NULL);
sl@0: 	if (success)
sl@0: 		{
sl@0:         //Allocate both frames
sl@0:         delete iFrameAlpha;
sl@0:         iFrameAlpha=NULL;
sl@0:         iFrameAlpha=new BitArray(KGP12xFrameBufferPixelCount);
sl@0:         //
sl@0:         delete iFrameBeta;
sl@0:         iFrameBeta=NULL;
sl@0:         iFrameBeta=new BitArray(KGP12xFrameBufferPixelCount);
sl@0:         //
sl@0:         delete iFrameGamma;
sl@0:         iFrameGamma=NULL;
sl@0:         iFrameGamma=new BitArray(KGP12xFrameBufferPixelCount);
sl@0:         //
sl@0:         iFrameNext=iFrameAlpha;
sl@0:         iFrameCurrent=iFrameBeta;
sl@0:         iFramePrevious=iFrameGamma;
sl@0: 
sl@0: 
sl@0:         //To make sure it is synced properly
sl@0:         iNeedFullFrameUpdate=0;
sl@0:         //
sl@0: 		SetNonBlocking(1);
sl@0:         //Since we can't get our display position we force it to our default
sl@0: 		//This makes sure frames are in sync from the start
sl@0:         //Clever clients will have taken care of putting back frame (0,0) before closing
sl@0: 		SetDisplayPosition(iDisplayPositionX,iDisplayPositionY);
sl@0: 		}
sl@0: 	return success;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: */
sl@0: void GP1212A01A::SetPixel(unsigned char aX, unsigned char aY, bool aOn)
sl@0: 	{
sl@0: 	//
sl@0: 	//int byteOffset=(aX*HeightInPixels()+aY)/8;
sl@0: 	//int bitOffset=(aX*HeightInPixels()+aY)%8;
sl@0:     //iNextFrame[byteOffset] |= ( (aOn?0x01:0x00) << bitOffset );
sl@0: 
sl@0:     if (iOffScreenMode)
sl@0:         {
sl@0:         if (aOn)
sl@0:             {
sl@0:             iFrameNext->SetBit(aX*HeightInPixels()+aY);
sl@0:             }
sl@0:         else
sl@0:             {
sl@0:             iFrameNext->ClearBit(aX*HeightInPixels()+aY);
sl@0:             }
sl@0:         }
sl@0:     else
sl@0:         {
sl@0:         //Just specify a one pixel block
sl@0:         SetPixelBlock(aX,aY,0x00,0x01,aOn);
sl@0:         }
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: */
sl@0: void GP1212A01A::BitBlit(const BitArray& aBitmap, int aSrcWidth, int aSrcHeight, int aTargetX, int aTargetY) const
sl@0: 	{
sl@0: 	//TODO: amend loop values so that we don't keep on looping past our frame buffer dimensions.
sl@0: 	for (int i=0;i<aSrcWidth;i++)
sl@0: 		{
sl@0: 		for (int j=0;j<aSrcHeight;j++)
sl@0: 			{
sl@0:             iFrameNext->SetBitValue((aTargetX+i)*HeightInPixels()+aTargetY+j,aBitmap[+i*aSrcHeight+j]);
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Clear our client side back buffer.
sl@0: Call to SwapBuffers must follow to actually clear the display.
sl@0: */
sl@0: void GP1212A01A::Clear()
sl@0:     {
sl@0:     //memset(iNextFrame->Ptr(),0x00,FrameBufferSizeInBytes());
sl@0:     if (iOffScreenMode)
sl@0:         {
sl@0:         iFrameNext->ClearAll();
sl@0:         }
sl@0:     else
sl@0:         {
sl@0:         SendClearCommand();
sl@0:         }
sl@0:     }
sl@0: 
sl@0: /**
sl@0: Set all pixels on our screen to the desired value.
sl@0: This operation is performed off screen to avoid tearing.
sl@0: @param 8 pixels pattern
sl@0: */
sl@0: void GP1212A01A::SetAllPixels(unsigned char aPattern)
sl@0: 	{
sl@0: 	//With a single buffer
sl@0: 	//unsigned char screen[2048]; //One screen worth of pixels
sl@0: 	//memset(screen,0xFF,sizeof(screen));
sl@0: 	//SetPixelBlock(0,0,63,sizeof(screen),screen);
sl@0: 
sl@0: 
sl@0:     if (iOffScreenMode)
sl@0:         {
sl@0:         memset(iFrameNext->Ptr(),aPattern,FrameBufferSizeInBytes());
sl@0:         }
sl@0:     else
sl@0:         {
sl@0:         //Using pattern SetPixelBlock variant.
sl@0:         SetPixelBlock(0,0,63,FrameBufferSizeInBytes(),aPattern);
sl@0:         }
sl@0: 	//
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /**
sl@0: Set the defined pixel block to the given value.
sl@0: @param X coordinate of our pixel block starting point.
sl@0: @param Y coordinate of our pixel block starting point.
sl@0: @param The height of our pixel block.
sl@0: @param The size of our pixel data. Number of pixels divided by 8.
sl@0: @param The value set to 8 pixels used as a pattern.
sl@0: */
sl@0: void GP1212A01A::SetPixelBlock(unsigned char aX, unsigned char aY, int aHeight, int aSize, unsigned char aValue)
sl@0: 	{
sl@0: 	OffScreenTranslation(aX,aY);
sl@0:     FutabaVfdReport report;
sl@0:     report[0]=0x00; //Report ID
sl@0:     report[1]=(aSize<=report.Size()-10?aSize+0x08:64); //Report length. -10 is for our header first 10 bytes. +8 is for our Futaba header size
sl@0:     report[2]=0x1B; //Command ID
sl@0:     report[3]=0x5B; //Command ID
sl@0:     report[4]=0xF0; //Command ID
sl@0:     report[5]=aX;   //X
sl@0:     report[6]=aY;   //Y
sl@0:     report[7]=aHeight; //Y length before return. Though outside the specs, setting this to zero apparently allows us to modify a single pixel without touching any other.
sl@0: 	report[8]=aSize>>8; //Size of pixel data in bytes (MSB)
sl@0: 	report[9]=aSize;	//Size of pixel data in bytes (LSB)
sl@0:     int sizeWritten=MIN(aSize,report.Size()-10);
sl@0:     memset(report.Buffer()+10, aValue, sizeWritten);
sl@0:     Write(report);
sl@0: 
sl@0:     int remainingSize=aSize;
sl@0:     //We need to keep on sending our pixel data until we are done
sl@0:     while (report[1]==64)
sl@0:         {
sl@0:         report.Reset();
sl@0:         remainingSize-=sizeWritten;
sl@0:         report[0]=0x00; //Report ID
sl@0:         report[1]=(remainingSize<=report.Size()-2?remainingSize:64); //Report length, should be 64 or the remaining size
sl@0:         sizeWritten=(report[1]==64?63:report[1]);
sl@0:         memset(report.Buffer()+2, aValue, sizeWritten);
sl@0:         Write(report);
sl@0:         }
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Set the defined pixel block to the given value.
sl@0: @param X coordinate of our pixel block starting point.
sl@0: @param Y coordinate of our pixel block starting point.
sl@0: @param The height of our pixel block.
sl@0: @param The size of our pixel data. Number of pixels divided by 8.
sl@0: @param Pointer to our pixel data.
sl@0: */
sl@0: void GP1212A01A::SetPixelBlock(unsigned char aX, unsigned char aY, int aHeight, int aSize, unsigned char* aPixels)
sl@0:     {
sl@0: 	OffScreenTranslation(aX,aY);
sl@0:     FutabaVfdReport report;
sl@0:     report[0]=0x00; //Report ID
sl@0:     report[1]=(aSize<=report.Size()-10?aSize+0x08:64); //Report length. -10 is for our header first 10 bytes. +8 is for our Futaba header size
sl@0:     report[2]=0x1B; //Command ID
sl@0:     report[3]=0x5B; //Command ID
sl@0:     report[4]=0xF0; //Command ID
sl@0:     report[5]=aX;   //X
sl@0:     report[6]=aY;   //Y
sl@0:     report[7]=aHeight; //Y length before return. Though outside the specs, setting this to zero apparently allows us to modify a single pixel without touching any other.
sl@0: 	report[8]=aSize>>8; //Size of pixel data in bytes (MSB)
sl@0: 	report[9]=aSize;	//Size of pixel data in bytes (LSB)
sl@0:     int sizeWritten=MIN(aSize,report.Size()-10);
sl@0:     memcpy(report.Buffer()+10, aPixels, sizeWritten);
sl@0:     Write(report);
sl@0: 
sl@0:     int remainingSize=aSize;
sl@0:     //We need to keep on sending our pixel data until we are done
sl@0:     while (report[1]==64)
sl@0:         {
sl@0:         report.Reset();
sl@0:         remainingSize-=sizeWritten;
sl@0:         report[0]=0x00; //Report ID
sl@0:         report[1]=(remainingSize<=report.Size()-2?remainingSize:64); //Report length, should be 64 or the remaining size
sl@0:         sizeWritten=(report[1]==64?63:report[1]);
sl@0:         memcpy(report.Buffer()+2, aPixels+(aSize-remainingSize), sizeWritten);
sl@0:         Write(report);
sl@0:         }
sl@0:     }
sl@0: 
sl@0: /**
sl@0: Using this function is advised against as is causes tearing.
sl@0: Use Clear instead.
sl@0: */
sl@0: void GP1212A01A::SendClearCommand()
sl@0: 	{
sl@0:     //1BH,5BH,32H,4AH
sl@0:     //Send Clear Display Command
sl@0: 	FutabaVfdReport report;
sl@0: 	report[0]=0x00; //Report ID
sl@0: 	report[1]=0x04; //Report length
sl@0: 	report[2]=0x1B; //Command ID
sl@0: 	report[3]=0x5B; //Command ID
sl@0: 	report[4]=0x32; //Command ID
sl@0: 	report[5]=0x4A; //Command ID
sl@0: 	Write(report);
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Change our display position within our buffer.
sl@0: */
sl@0: void GP1212A01A::SetDisplayPosition(DW aDw,unsigned char aX, unsigned char aY)
sl@0:     {
sl@0:     //1BH,5BH,Dw,Px,Py
sl@0:     //Send Display Position Settings Command
sl@0:     FutabaVfdReport report;
sl@0:     report[0]=0x00; //Report ID
sl@0:     report[1]=0x05; //Report length
sl@0:     report[2]=0x1B; //Command ID
sl@0:     report[3]=0x5B; //Command ID
sl@0:     report[4]=aDw;  //Specify our DW
sl@0:     report[5]=aX;   //X coordinate of our DW top-left corner
sl@0:     report[6]=aY;   //Y coordinate of our DW top-left corner
sl@0:     Write(report);
sl@0:     }
sl@0: 
sl@0: /**
sl@0: Change our display position within our buffer.
sl@0: */
sl@0: void GP1212A01A::SetDisplayPosition(unsigned char aX, unsigned char aY)
sl@0: 	{
sl@0: 	//Specs apparently says both DW should remain the same
sl@0: 	//Just don't ask
sl@0:     SetDisplayPosition(GP1212A01A::DW1,aX,aY);
sl@0:     SetDisplayPosition(GP1212A01A::DW2,aX,aY);
sl@0: 	iDisplayPositionX=aX;
sl@0: 	iDisplayPositionY=aY;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Provide Y coordinate of our off screen buffer.
sl@0: */
sl@0: unsigned char GP1212A01A::OffScreenY() const
sl@0: 	{
sl@0: 	//Overflowing is fine this is just what we want
sl@0: 	return iDisplayPositionY+HeightInPixels();
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Put our off screen buffer on screen.
sl@0: On screen buffer goes off screen.
sl@0: */
sl@0: void GP1212A01A::SwapBuffers()
sl@0: 	{
sl@0: 	//Only perform buffer swapping if off screen mode is enabled
sl@0: 	if (OffScreenMode())
sl@0: 		{
sl@0: 		//Send host back buffer to device back buffer
sl@0:         if (!iUseFrameDifferencing || iNeedFullFrameUpdate<KNumberOfFrameBeforeDiffAlgo)
sl@0:             {
sl@0:             iNeedFullFrameUpdate++;
sl@0:             SetPixelBlock(0,0,63,FrameBufferSizeInBytes(),iFrameNext->Ptr());
sl@0:             }
sl@0:         else
sl@0:             {
sl@0:             //Frame diff algo is enabled
sl@0:             //We are going to send to our device only the differences between next frame and previous frame
sl@0:             SendModifiedPixelBlocks();
sl@0:             }
sl@0: 		//Swap device front and back buffer
sl@0: 		SetDisplayPosition(iDisplayPositionX,OffScreenY());
sl@0: 
sl@0:         //Cycle through our frame buffers
sl@0:         //We keep track of previous frame which is in fact our device back buffer.
sl@0:         //We can then compare previous and next frame and send only the differences to our device.
sl@0:         //This mechanism allows us to reduce traffic over our USB bus thus improving our frame rate from 14 FPS to 30 FPS.
sl@0:         //Keep our previous frame pointer
sl@0:         BitArray* previousFrame=iFramePrevious;
sl@0:         //Current frame becomes the previous one
sl@0:         iFramePrevious = iFrameCurrent;
sl@0:         //Next frame becomes the current one
sl@0:         iFrameCurrent = iFrameNext;
sl@0:         //Next frame is now our former previous
sl@0:         iFrameNext = previousFrame;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 
sl@0: //Define the edge of our pixel block
sl@0: //Pixel blocks of 32x32 seems to run almost as fast as full screen update in worse case scenarii.
sl@0: //Though I wonder if in some situations 16 could be better. Make this an attribute at some point if need be.
sl@0: const int KPixelBlockEdge = 32;
sl@0: const int KPixelBlockSizeInBits = KPixelBlockEdge*KPixelBlockEdge;
sl@0: const int KPixelBlockSizeInBytes = KPixelBlockSizeInBits/8;
sl@0: 
sl@0: 
sl@0: /**
sl@0:  * @brief GP1212A01A::SendModifiedPixelBlocks
sl@0:  * Compare our back and front buffer and send to the device only the modified pixels.
sl@0:  */
sl@0: void GP1212A01A::SendModifiedPixelBlocks()
sl@0:     {
sl@0:     int w=WidthInPixels();
sl@0:     int h=HeightInPixels();
sl@0: 
sl@0: 
sl@0:     //TODO: optimize with memcmp and 16 inc
sl@0:     /*
sl@0: 
sl@0:     for (int i=0;i<w;i++)
sl@0:         {
sl@0:         for (int j=0;j<h;j++)
sl@0:             {
sl@0:             //aX*HeightInPixels()+aY
sl@0:             if ((*iFrameNext)[i*h+j]!=(*iFramePrevious)[i*h+j])
sl@0:                 {
sl@0:                 //We need to update that pixel
sl@0:                 SetPixelBlock(i,j,0,1,((*iFrameNext)[i*h+j]?0x01:0x00));
sl@0:                 //SetDisplayPosition(iDisplayPositionX,OffScreenY());
sl@0:                 //SetDisplayPosition(iDisplayPositionX,OffScreenY());
sl@0: 
sl@0:                 //SetPixelBlock(i,j,15,32,iNextFrame->Ptr()+offset);
sl@0:                 }
sl@0:             }
sl@0:         }
sl@0:     */
sl@0: 
sl@0:     BitArray nextBlock(KPixelBlockSizeInBits);
sl@0:     BitArray previousBlock(KPixelBlockSizeInBits);
sl@0: 
sl@0:     for (int i=0;i<w;i+=KPixelBlockEdge)
sl@0:         {
sl@0:         for (int j=0;j<h;j+=KPixelBlockEdge)
sl@0:             {
sl@0:             //aX*HeightInPixels()+aY
sl@0:             //int offset=(i*w/8)+(j/8);
sl@0: 
sl@0: #ifdef DEBUG_FRAME_DIFF
sl@0:             QImage imagePrevious(KPixelBlockEdge,KPixelBlockEdge,QImage::Format_RGB32);
sl@0:             QImage imageNext(KPixelBlockEdge,KPixelBlockEdge,QImage::Format_RGB32);
sl@0: #endif
sl@0: 
sl@0:             //Get both our blocks from our buffers
sl@0:             for (int x=i;x<i+KPixelBlockEdge;x++)
sl@0:                 {
sl@0:                 for (int y=j;y<j+KPixelBlockEdge;y++)
sl@0:                     {
sl@0:                     int blockOffset=(x-i)*KPixelBlockEdge+(y-j);
sl@0:                     int frameOffset=x*h+y;
sl@0:                     nextBlock.SetBitValue(blockOffset,(*iFrameNext)[frameOffset]);
sl@0:                     previousBlock.SetBitValue(blockOffset,(*iFramePrevious)[frameOffset]);
sl@0: 
sl@0: #ifdef DEBUG_FRAME_DIFF
sl@0:                     imageNext.setPixel(x-i,y-j,(nextBlock[blockOffset]?0xFFFFFFFF:0x00000000));
sl@0:                     imagePrevious.setPixel(x-i,y-j,(previousBlock[blockOffset]?0xFFFFFFFF:0x00000000));
sl@0: #endif
sl@0:                     }
sl@0:                 }
sl@0: 
sl@0: #ifdef DEBUG_FRAME_DIFF
sl@0:             QString previousName;
sl@0:             QString nextName;
sl@0:             QTextStream(&previousName) << "p" << i << "x" << j << ".png";
sl@0:             QTextStream(&nextName) << "n" << i << "x" << j << ".png";
sl@0:             imagePrevious.save(previousName);
sl@0:             imageNext.save(nextName);
sl@0: #endif
sl@0: 
sl@0: 
sl@0:             //if (memcmp(iFrameNext->Ptr()+offset,iFramePrevious->Ptr()+offset,32 )) //32=(16*16/8)
sl@0:             if (memcmp(nextBlock.Ptr(),previousBlock.Ptr(),KPixelBlockSizeInBytes)!=0)
sl@0:                 {
sl@0:                 //We need to update that block
sl@0:                 SetPixelBlock(i,j,KPixelBlockEdge-1,KPixelBlockSizeInBytes,nextBlock.Ptr());
sl@0:                 //SetPixelBlock(i,j,15,32,0xFF/*nextBlock.Ptr()*/);
sl@0:                 //SetDisplayPosition(iDisplayPositionX,OffScreenY());
sl@0:                 //SetDisplayPosition(iDisplayPositionX,OffScreenY());
sl@0: 
sl@0:                 //SetPixelBlock(i,j,15,32,iFrameNext->Ptr()+offset);
sl@0:                 }
sl@0:             }
sl@0:         }
sl@0: 
sl@0:     }
sl@0: 
sl@0: /**
sl@0: Translate the given pixel coordinate according to our off screen mode.
sl@0: */
sl@0: void GP1212A01A::OffScreenTranslation(unsigned char& aX, unsigned char& aY)
sl@0: 	{
sl@0: 	if (OffScreenMode())
sl@0: 		{
sl@0: 		aX+=WidthInPixels()-iDisplayPositionX;
sl@0: 		aY+=HeightInPixels()-iDisplayPositionY;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /**
sl@0: */
sl@0: void GP1212A01A::ResetBuffers()
sl@0: 	{
sl@0:     //iNextFrame->ClearAll();
sl@0:     //memset(iFrameAlpha,0x00,sizeof(iFrameAlpha));
sl@0: 	//memset(iFrameBeta,0x00,sizeof(iFrameBeta));
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: */
sl@0: void GP1212A01A::RequestDeviceId()
sl@0:     {
sl@0:     if (RequestPending())
sl@0:         {
sl@0:         //Abort silently for now
sl@0:         return;
sl@0:         }
sl@0: 
sl@0:     //1BH,5BH,63H,49H,44H
sl@0:     //Send Read ID command
sl@0:     FutabaVfdReport report;
sl@0:     report[0]=0x00; //Report ID
sl@0:     report[1]=0x05; //Report length
sl@0:     report[2]=0x1B; //Command ID
sl@0:     report[3]=0x5B; //Command ID
sl@0:     report[4]=0x63; //Command ID
sl@0:     report[5]=0x49; //Command ID
sl@0:     report[6]=0x44; //Command ID
sl@0:     if (Write(report)==report.Size())
sl@0:         {
sl@0:         iRequest=ERequestDeviceId;
sl@0:         }
sl@0:     }
sl@0: 
sl@0: /**
sl@0: */
sl@0: void GP1212A01A::RequestFirmwareRevision()
sl@0:     {
sl@0:     if (RequestPending())
sl@0:         {
sl@0:         //Abort silently for now
sl@0:         return;
sl@0:         }
sl@0: 
sl@0:     //1BH,5BH,63H,46H,52H
sl@0:     //Send Software Revision Read Command
sl@0:     FutabaVfdReport report;
sl@0:     report[0]=0x00; //Report ID
sl@0:     report[1]=0x05; //Report length
sl@0:     report[2]=0x1B; //Command ID
sl@0:     report[3]=0x5B; //Command ID
sl@0:     report[4]=0x63; //Command ID
sl@0:     report[5]=0x46; //Command ID
sl@0:     report[6]=0x52; //Command ID
sl@0:     if (Write(report)==report.Size())
sl@0:         {
sl@0:         iRequest=ERequestFirmwareRevision;
sl@0:         }
sl@0:     }
sl@0: 
sl@0: /**
sl@0: */
sl@0: void GP1212A01A::RequestPowerSupplyStatus()
sl@0:     {
sl@0:     if (RequestPending())
sl@0:         {
sl@0:         //Abort silently for now
sl@0:         return;
sl@0:         }
sl@0:     //1BH,5BH,63H,50H,4DH
sl@0:     //Send Power Suppply Monitor Command
sl@0:     FutabaVfdReport report;
sl@0:     report[0]=0x00; //Report ID
sl@0:     report[1]=0x05; //Report length
sl@0:     report[2]=0x1B; //Command ID
sl@0:     report[3]=0x5B; //Command ID
sl@0:     report[4]=0x63; //Command ID
sl@0:     report[5]=0x50; //Command ID
sl@0:     report[6]=0x4D; //Command ID
sl@0:     if (Write(report)==report.Size())
sl@0:         {
sl@0:         iRequest=ERequestPowerSupplyStatus;
sl@0:         }
sl@0:     }
sl@0: 
sl@0: 
sl@0: /**
sl@0: This is for development purposes only.
sl@0: Production application should stick to off-screen mode to avoid tearing.
sl@0: */
sl@0: void GP1212A01A::ToggleOffScreenMode()
sl@0: 	{
sl@0:     SetOffScreenMode(!iOffScreenMode);
sl@0: 	}
sl@0: 
sl@0: /**
sl@0:  * @brief GP1212A01A::SetOffScreenMode
sl@0:  * @param aOn
sl@0:  * @return
sl@0:  */
sl@0: void GP1212A01A::SetOffScreenMode(bool aOn)
sl@0:     {
sl@0:     if (aOn==iOffScreenMode)
sl@0:     {
sl@0:         //Nothing to do here
sl@0:         return;
sl@0:     }
sl@0: 
sl@0:     iOffScreenMode=aOn;
sl@0: 
sl@0:     //Clean up our buffers upon switching modes
sl@0:     SetDisplayPosition(0,0);
sl@0:     Clear();
sl@0:     SwapBuffers();
sl@0:     Clear();
sl@0:     }
sl@0: 
sl@0: /**
sl@0:  */
sl@0: GP1212A01A::Request GP1212A01A::AttemptRequestCompletion()
sl@0:     {
sl@0:     if (!RequestPending())
sl@0:         {
sl@0:         return ERequestNone;
sl@0:         }
sl@0: 
sl@0:     int res=Read(iInputReport);
sl@0: 
sl@0:     if (!res)
sl@0:         {
sl@0:         return ERequestNone;
sl@0:         }
sl@0: 
sl@0:     //Process our request
sl@0:     if (CurrentRequest()==GP1212A01A::ERequestPowerSupplyStatus)
sl@0:         {
sl@0:         if (iInputReport[1]==0x4F && iInputReport[2]==0x4E)
sl@0:             {
sl@0:             iPowerOn = true;
sl@0:             }
sl@0:         else if (iInputReport[1]==0x4F && iInputReport[2]==0x46 && iInputReport[3]==0x46)
sl@0:             {
sl@0:             iPowerOn = false;
sl@0:             }
sl@0:         }
sl@0: 
sl@0:     Request completed=iRequest;
sl@0:     //Our request was completed
sl@0:     iRequest=ERequestNone;
sl@0: 
sl@0:     return completed;
sl@0:     }
sl@0: 
sl@0: 
sl@0: /**
sl@0: Set our screen brightness.
sl@0: @param The desired brightness level. Must be between MinBrightness and MaxBrightness.
sl@0: */
sl@0: void GP1212A01A::SetBrightness(int aBrightness)
sl@0:     {
sl@0:     if (aBrightness<MinBrightness()||aBrightness>MaxBrightness())
sl@0:         {
sl@0:         //Brightness out of range.
sl@0:         //Just ignore that request.
sl@0:         return;
sl@0:         }
sl@0: 
sl@0:     FutabaVfdReport report;
sl@0:     report[0]=0x00; //Report ID
sl@0:     report[1]=0x06; //Report size
sl@0:     report[2]=0x1B; //Command ID
sl@0:     report[3]=0x5C; //Command ID
sl@0:     report[4]=0x3F; //Command ID
sl@0:     report[5]=0x4C; //Command ID
sl@0:     report[6]=0x44; //Command ID
sl@0:     report[7]=0x30+aBrightness; //Brightness level
sl@0:     Write(report);
sl@0:     }
sl@0: 
sl@0: