What is the display (or it's timings) on the STM32H750B-DK?

[Imen.D]

Hello @LDuin.1​ and welcome to the Community 🙂

Please have a look at this AN5020 Application note Digital camera interface (DCMI) for STM32 MCUs

I hope this resource is helpful for you.

Imen 

[LDuin.1]

Hello and thank you @Imen DAHMEN​.

Unfortunately this is not quite what I am looking for.

The STM32H750B-DK has an LCD display connected to the LTDC via the LCD interface according to chapter 6.15 of the user manual. I was wondering how to set up this display in STM32CubeMX (mostly I'm looking for the Synchronization for Width/Height parameters) so I can draw things on it from code.

Hopefully this is a bit clearer than the question I asked before 🙂

Lennard

[Tesla DeLorean]

STM32Cube_FW_H7_V1.9.1\Drivers\BSP\STM32H750B-DK\stm32h750b_discovery_lcd.c

STM32Cube_FW_H7_V1.9.1\Drivers\BSP\Components\rk043fn48h\rk043fn48h.h

RK043FN48H

Should be in the BOM, and the BSP files. I think the screen details/docs have been posted to the forum previously

/**
  * @brief  RK043FN48H Size
  */
#define  RK043FN48H_WIDTH    ((uint16_t)480)          /* LCD PIXEL WIDTH            */
#define  RK043FN48H_HEIGHT   ((uint16_t)272)          /* LCD PIXEL HEIGHT           */
 
/**
  * @brief  RK043FN48H Timing
  */
#define  RK043FN48H_HSYNC            ((uint16_t)41)   /* Horizontal synchronization */
#define  RK043FN48H_HBP              ((uint16_t)13)   /* Horizontal back porch      */
#define  RK043FN48H_HFP              ((uint16_t)32)   /* Horizontal front porch     */
#define  RK043FN48H_VSYNC            ((uint16_t)10)   /* Vertical synchronization   */
#define  RK043FN48H_VBP              ((uint16_t)2)    /* Vertical back porch        */
#define  RK043FN48H_VFP              ((uint16_t)2)    /* Vertical front porch       */
 
/**
  * @brief  RK043FN48H frequency divider
  */
#define  RK043FN48H_FREQUENCY_DIVIDER    5            /* LCD Frequency divider      */
...
 
/**
  * @brief  Initializes the LTDC.
  * @param  hltdc  LTDC handle
  * @param  Width  LTDC width
  * @param  Height LTDC height
  * @retval HAL status
  */
__weak HAL_StatusTypeDef MX_LTDC_Init(LTDC_HandleTypeDef *hltdc, uint32_t Width, uint32_t Height)
{
  hltdc->Instance = LTDC;
  hltdc->Init.HSPolarity = LTDC_HSPOLARITY_AL;
  hltdc->Init.VSPolarity = LTDC_VSPOLARITY_AL;
  hltdc->Init.DEPolarity = LTDC_DEPOLARITY_AL;
  hltdc->Init.PCPolarity = LTDC_PCPOLARITY_IPC;
 
  hltdc->Init.HorizontalSync     = RK043FN48H_HSYNC - 1U;
  hltdc->Init.AccumulatedHBP     = (RK043FN48H_HSYNC + (RK043FN48H_HBP - 11U) - 1U);
  hltdc->Init.AccumulatedActiveW = RK043FN48H_HSYNC + Width + RK043FN48H_HBP - 1U;
  hltdc->Init.TotalWidth         = RK043FN48H_HSYNC + Width + (RK043FN48H_HBP - 11U) + RK043FN48H_HFP - 1U;
  hltdc->Init.VerticalSync       = RK043FN48H_VSYNC - 1U;
  hltdc->Init.AccumulatedVBP     = RK043FN48H_VSYNC + RK043FN48H_VBP - 1U;
  hltdc->Init.AccumulatedActiveH = RK043FN48H_VSYNC + Height + RK043FN48H_VBP - 1U;
  hltdc->Init.TotalHeigh         = RK043FN48H_VSYNC + Height + RK043FN48H_VBP + RK043FN48H_VFP - 1U;
 
  hltdc->Init.Backcolor.Blue  = 0xFF;
  hltdc->Init.Backcolor.Green = 0xFF;
  hltdc->Init.Backcolor.Red   = 0xFF;
 
  return HAL_LTDC_Init(hltdc);
}

[Tesla DeLorean]

https://community.st.com/s/question/0D50X00009XkduYSAR/stm32f746gdisco-display-datasheet

https://mikrocontroller.bplaced.net/wordpress/wp-content/uploads/2018/01/RK043FN48H-CT672B-V1.0.pdf