/
display.cpp
39 lines (36 loc) · 1.71 KB
/
display.cpp
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#include "config.h"
#include "display.h"
#include "spi.h"
#include <memory.h>
void ClearScreen()
{
for(int y = 0; y < DISPLAY_HEIGHT; ++y)
{
#ifdef DISPLAY_SPI_BUS_IS_16BITS_WIDE
SPI_TRANSFER(DISPLAY_SET_CURSOR_X, 0, 0, 0, 0, 0, (DISPLAY_WIDTH-1) >> 8, 0, (DISPLAY_WIDTH-1) & 0xFF);
SPI_TRANSFER(DISPLAY_SET_CURSOR_Y, 0, (uint8_t)(y >> 8), 0, (uint8_t)(y & 0xFF), 0, (DISPLAY_HEIGHT-1) >> 8, 0, (DISPLAY_HEIGHT-1) & 0xFF);
#elif defined(DISPLAY_SET_CURSOR_IS_8_BIT)
SPI_TRANSFER(DISPLAY_SET_CURSOR_X, 0, DISPLAY_WIDTH-1);
SPI_TRANSFER(DISPLAY_SET_CURSOR_Y, (uint8_t)y, DISPLAY_HEIGHT-1);
#else
SPI_TRANSFER(DISPLAY_SET_CURSOR_X, 0, 0, (DISPLAY_WIDTH-1) >> 8, (DISPLAY_WIDTH-1) & 0xFF);
SPI_TRANSFER(DISPLAY_SET_CURSOR_Y, (uint8_t)(y >> 8), (uint8_t)(y & 0xFF), (DISPLAY_HEIGHT-1) >> 8, (DISPLAY_HEIGHT-1) & 0xFF);
#endif
SPITask *clearLine = AllocTask(DISPLAY_WIDTH*SPI_BYTESPERPIXEL);
clearLine->cmd = DISPLAY_WRITE_PIXELS;
memset(clearLine->data, 0, clearLine->size);
CommitTask(clearLine);
RunSPITask(clearLine);
DoneTask(clearLine);
}
#ifdef DISPLAY_SPI_BUS_IS_16BITS_WIDE
SPI_TRANSFER(DISPLAY_SET_CURSOR_X, 0, 0, 0, 0, 0, (DISPLAY_WIDTH-1) >> 8, 0, (DISPLAY_WIDTH-1) & 0xFF);
SPI_TRANSFER(DISPLAY_SET_CURSOR_Y, 0, 0, 0, 0, 0, (DISPLAY_HEIGHT-1) >> 8, 0, (DISPLAY_HEIGHT-1) & 0xFF);
#elif defined(DISPLAY_SET_CURSOR_IS_8_BIT)
SPI_TRANSFER(DISPLAY_SET_CURSOR_X, 0, DISPLAY_WIDTH-1);
SPI_TRANSFER(DISPLAY_SET_CURSOR_Y, 0, DISPLAY_HEIGHT-1);
#else
SPI_TRANSFER(DISPLAY_SET_CURSOR_X, 0, 0, (DISPLAY_WIDTH-1) >> 8, (DISPLAY_WIDTH-1) & 0xFF);
SPI_TRANSFER(DISPLAY_SET_CURSOR_Y, 0, 0, (DISPLAY_HEIGHT-1) >> 8, (DISPLAY_HEIGHT-1) & 0xFF);
#endif
}