DMA2D signals transfer completion too soon? I used STM32CubeIDE to create the LCD_DSI_CmdMode_DoubleBuffer for the STM32F769I-DISCOVERY board. It works fine, but I made some modifications to just draw a rectangle: if 1
BSP_LCD_SetTextColor(LCD_COLOR_RED);
BSP_LCD_FillRect(0, 0, 800, 240);
#else
/* Display example brief */
LCD_BriefDisplay();
/* Copy Buffer 0 into buffer 1, so only image area to be redrawn later */
CopyBuffer((uint32_t *)Buffers[0], (uint32_t *)Buffers[1], 0, 0, 800, 480);
/*Draw first image */
CopyBuffer((uint32_t *)Images[ImageIndex++], (uint32_t *)Buffers[front_buffer], 240, 160, 320, 240);
pend_buffer = 0;
#endif
/* Send Display On DCS Command to display */
HAL_DSI_ShortWrite(&(hdsi_discovery),
0,
DSI_DCS_SHORT_PKT_WRITE_P1,
OTM8009A_CMD_DISPON,
0x00);
/* Refresh the LCD display*/
HAL_DSI_Refresh(&hdsi_discovery);
#if 1
/* Infinite loop */
while (1);
#else
/* Infinite loop */
while (1)
{
if(pend_buffer < 0)
{
/* Prepare back buffer */
CopyBuffer
