STM32F7之LCD驱动学习（LTDC 双图层）

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STM32F7之LCD驱动学习（LTDC 双图层） [复制链接]

1.Example Description

  This example provides a description of how to configure LTDC peripheral to
  display a BMP image of size 480x272 and format RGB888 (24 bits/pixel) on LCD using only one layer.
  In this basic example the goal is to explain the different fields of the LTDC
  structure.

  At the beginning of the main program the HAL_Init() function is called to reset
  all the peripherals, initialize the Flash interface and the systick.
  Then the SystemClock_Config() function is used to configure the system
  clock (SYSCLK) to run at 216 MHz.

  After LCD initialization, the LCD layer 1 is configured to display an image
  (modelled by an array) loaded directly from flash memory by LTDC integrated DMA.

2. LCD_TFT synchronous timings configuration :
  -------------------------------------------



  Each LCD device has its specific synchronous timings values.
  This example uses AM480272H3TMQW-T01H LCD (MB1046 B-01) and configures
  the synchronous timings as following :

  Horizontal Synchronization (Hsync) = 41
  Horizontal Back Porch (HBP)        = 13
  Active Width                       = 480
  Horizontal Front Porch (HFP)       = 32

  Vertical Synchronization (Vsync)   = 10
  Vertical Back Porch (VBP)          = 2
  Active Heigh                       = 272
  Vertical Front Porch (VFP)         = 2

  LCD_TFT windowing configuration :
  ---------------------------------

  To configure the active display window, this example configures the
  horizontal/vertical start and stop.

  HorizontalStart = (Offset_X + Hsync + HBP);
  HorizontalStop  = (Offset_X + Hsync + HBP + Window_Width - 1);
  VarticalStart   = (Offset_Y + Vsync + VBP);
  VerticalStop    = (Offset_Y + Vsync + VBP + Window_Heigh - 1);

  Window_width and Window_heigh should be in line with the image size to be
  displayed.

3.STM32 Discovery board's LED can be used to monitor the transfer status:
- LED1 is ON when there is an error in Init process.

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