how to set up LTDC Hsync,Vsync and porch value???

hi.

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I am using STM32F767 to control RGB TFT LCD. Data is output on the screen with TouchGFX.

But sometimes the screen momentarily breaks for a very short period of time and then comes back.

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When I changed the porch value of LTDC, the cycle of symptoms changed.

The following is the data on the Porch of my LCD. How to change LTDC's Porch value?

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current LCD Clock is 32 Mhz.

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#define T080800480_A1TMN_003_HSYNC ((uint16_t)1) /* Horizontal synchronization */
#define T080800480_A1TMN_003_HBP ((uint16_t)46) /* Horizontal back porch */
#define T080800480_A1TMN_003_HFP ((uint16_t)210) /* Horizontal front porch */
#define T080800480_A1TMN_003_VSYNC ((uint16_t)2) /* Vertical synchronization */
#define T080800480_A1TMN_003_VBP ((uint16_t)23) /* Vertical back porch */
#define T080800480_A1TMN_003_VFP ((uint16_t)22) /* Vertical front porch */
 
hLtdcHandler.Init.HorizontalSync = (T080800480_A1TMN_003_HSYNC - 1);
 hLtdcHandler.Init.VerticalSync = (T080800480_A1TMN_003_VSYNC - 1);
 hLtdcHandler.Init.AccumulatedHBP = (T080800480_A1TMN_003_HSYNC + T080800480_A1TMN_003_HBP - 1);
 hLtdcHandler.Init.AccumulatedVBP = (T080800480_A1TMN_003_VSYNC + T080800480_A1TMN_003_VBP - 1);
 hLtdcHandler.Init.AccumulatedActiveH = (T080800480_A1TMN_003_HEIGHT + T080800480_A1TMN_003_VSYNC + T080800480_A1TMN_003_VBP - 1);
 hLtdcHandler.Init.AccumulatedActiveW = (T080800480_A1TMN_003_WIDTH + T080800480_A1TMN_003_HSYNC + T080800480_A1TMN_003_HBP - 1);
 hLtdcHandler.Init.TotalHeigh = (T080800480_A1TMN_003_HEIGHT + T080800480_A1TMN_003_VSYNC + T080800480_A1TMN_003_VBP + T080800480_A1TMN_003_VFP - 1);
 hLtdcHandler.Init.TotalWidth = (T080800480_A1TMN_003_WIDTH + T080800480_A1TMN_003_HSYNC + T080800480_A1TMN_003_HBP + T080800480_A1TMN_003_HFP - 1);
 
 /* LCD clock configuration */
// BSP_LCD_ClockConfig(&hLtdcHandler, NULL);
 
 
 
 /* Initialize the LCD pixel width and pixel height */
 hLtdcHandler.LayerCfg->ImageWidth = T080800480_A1TMN_003_WIDTH;
 hLtdcHandler.LayerCfg->ImageHeight = T080800480_A1TMN_003_HEIGHT;
 
 
 
 /* Background value */
 hLtdcHandler.Init.Backcolor.Blue = 0;
 hLtdcHandler.Init.Backcolor.Green = 0;
 hLtdcHandler.Init.Backcolor.Red = 0;
 
 /* Polarity */
 hLtdcHandler.Init.HSPolarity = LTDC_HSPOLARITY_AL;
 hLtdcHandler.Init.VSPolarity = LTDC_VSPOLARITY_AL; 
 hLtdcHandler.Init.DEPolarity = LTDC_DEPOLARITY_AL; 
 hLtdcHandler.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
 hLtdcHandler.Instance = LTDC;

This is my configuration code.

@Martin KJELDSEN​ can you help me???