No, actually its for a custom board. Generated code using CubeMX using Partial frame buffer strategy. TouchGFXGeneratedHAL.cpp contains some methods which are used before they have been defined. and re-arranging the correct sequence is not beneficial as it over writes the whole file, every time I generate code from CubeMX. Below are the methods.
/* ******************************************************
* Functions required by Partial Frame Buffer Strategy
* ******************************************************
*
* * uint8_t isTransmittingData() must return whether or not data is currently being transmitted, over e.g. SPI.
* * void transmitFrameBufferBlock(uint8_t* pixels, uint16_t x, uint16_t y, uint16_t w, uint16_t h) will be called
* when the framework wants to send a block. The user must then transfer
* the data represented by the arguments.
*
* A user must call touchgfx::startNewTransfer(); once transmitFrameBufferBlock() has succesfully sent a block.
* E.g. if using DMA to transfer the block, this could be called in the "Transfer Completed" interrupt handler.
*
*/
extern "C" void transmitFrameBufferBlock(uint8_t* pixels, uint16_t x, uint16_t y, uint16_t w, uint16_t h);
extern "C" uint8_t isTransmittingData();
// Block Allocator for Partial Framebuffer strategy
ManyBlockAllocator<512, /* block size */
3, /* number of blocks */
2 /* bytes per pixel */
> blockAllocator;
// Used by Partial Framebuffer strategy to indicate that a new block is ready for transfer.
static volatile bool readyForTransfer = false;
namespace touchgfx
{
/**
* This functino is called by FrameBufferAllocator if no block is
* available.
*/
void FrameBufferAllocatorWaitOnTransfer()
{
while(!readyForTransfer);
}
/**
* Called by FrameBufferAllocator when a block is drawn and
* therefore ready for transfer. The LCD driver should use this
* method to start a transfer.
*/
void FrameBufferAllocatorSignalBlockDrawn()
{
readyForTransfer = false;
return;
}
// A user must call touchgfx::startNewTransfer(); once transmitFrameBufferBlock() has succesfully sent a block.
void startNewTransfer()
{
FrameBufferAllocator* fba = HAL::getInstance()->getFrameBufferAllocator();
fba->freeBlockAfterTransfer();
readyForTransfer = true;
if (fba->hasBlockReadyForTransfer())
{
touchgfx::Rect r;
const uint8_t* pixels = fba->getBlockForTransfer(r);
transmitFrameBufferBlock((uint8_t*)pixels, r.x, r.y, r.width, r.height);
}
}
}
