关于二代示波器项目里面的DMA2D相关的问题

ssssssss

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static void _DMA_MixColorsBulk(LCD_COLOR * pColorFG, LCD_COLOR * pColorBG, LCD_COLOR * pColorDst, U8 Intens, U32 NumItems) {
  //
  // Set up mode
  //
  DMA2D->CR      = 0x00020000UL | (1 << 9);         // Control Register (Memory to memory with blending of FG and BG and TCIE)
  //
  // Set up pointers
  //
  DMA2D->FGMAR   = (U32)pColorFG;                   // Foreground Memory Address Register
  DMA2D->BGMAR   = (U32)pColorBG;                   // Background Memory Address Register
  DMA2D->OMAR    = (U32)pColorDst;                  // Output Memory Address Register (Destination address)
  //
  // Set up pixel format
  //
  DMA2D->FGPFCCR = LTDC_Pixelformat_ARGB8888
                 | (1UL << 16)
                 | ((U32)Intens << 24);
  DMA2D->BGPFCCR = LTDC_Pixelformat_ARGB8888
                 | (0UL << 16)
                 | ((U32)(255 - Intens) << 24);
  DMA2D->OPFCCR  = LTDC_Pixelformat_ARGB8888;
  //
  // Set up size
  //
  DMA2D->NLR     = (U32)(NumItems << 16) | 1;              // Number of Line Register (Size configuration of area to be transfered)
  //
  // Execute operation
  //
  DMA2D->CR     |= 1;  
    
  while (DMA2D->CR & DMA2D_CR_START) {
    //__WFI();                                        // Sleep until next interrupt
  }
}

二代示波器项目中，设置像素格式的时候为啥都是ARGB8888格式（LTDC_Pixelformat_ARGB8888），好像整个项目选择的是LTDC选择的是RGB565，emwin库是BGR565格式？

eric2013

emWin内部操作是ARGB8888或者ABGR8888的32bit颜色格式操作的。

LTDC的属于LCD实际输出颜色格式了