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Hi, thank you all for your help.

you have reason, I had a mistake into the next function, so I wrote a wrong address register:

Quotevoid FT813_memWrite16(u32 ftAddress, u16 ftData16) {
   s32   i;
   u8 cTempAddr[3], cTempData[2];
   HAL_StatusTypeDef estat;

   cTempAddr[2] = (u8)(ftAddress >> 16) | MEM_WRITE;   // Compose the command and address to send
   cTempAddr[1] = (u8)(ftAddress >> ;            // middle byte
   cTempAddr[0] = (u8)(ftAddress);                  // low byte
   
   cTempData[1] = (u8) (ftData16 >> ;            // Compose data to be sent - high byte
   cTempData[0] = (u8) (ftData16);                  // low byte
   
   FT813_CS_ON;
   for (i=2;i>=0;i--) HAL_SPI_Transmit(&FT813_SPI_H,&cTempAddr,1,FT813_SPI_TO);    // Send Memory Write plus high address byte
   for (i=0;i<2;i++) estat=HAL_SPI_Transmit(&FT813_SPI_H,&cTempData,1,FT813_SPI_TO);    // Send data bytes
   FT813_CS_OFF;   

   }

Now, all is correct.

Thank you

Thank you for your help Rudolph! I have my code like this, but the result is exactly the same:

        HAL_Delay(200);
   FT813_PDN_OFF; //Fem un reset del controlador
   HAL_Delay(20);
   FT813_PDN_ON; //Activa Power Down
   HAL_Delay(20); //Requerit
   
   
   FT813_cmdWrite(FT813_CMD_CLKEXT);      // clock extern
   
   HAL_Delay(20);
   
   FT813_cmdWrite(FT813_CMD_ACTIVE);      // activa el chip
   
   HAL_Delay(500); //WAIT 500 ms
   
   while(FT813_memRead8(REG_ID) != 0x7C) {}   // espera a identificar el xip
      
   while (FT813_memRead8(REG_CPURESET) != 0x00) {} // Ensure CPUreset register reads 0 and so FT8xx is ready
      
      
      // WQVGA display parameters
      FT813_memWrite16(REG_HCYCLE,  928);      // Total number of clocks per line
      FT813_memWrite16(REG_HOFFSET, 88);      // Start of active line
      FT813_memWrite16(REG_HSYNC0,  1);      // Start of horizontal sync pulse
      FT813_memWrite16(REG_HSYNC1,  48);      // End of horizontal sync pulse
      FT813_memWrite16(REG_VCYCLE,  525);      // Total number of lines per screen
      FT813_memWrite16(REG_VOFFSET, 32);      // Start of active screen
      FT813_memWrite16(REG_VSYNC0,  0);      // Start of vertical sync pulse
      FT813_memWrite16(REG_VSYNC1,  3);      // End of vertical sync pulse
      FT813_memWrite8(REG_SWIZZLE,  0);      // Define RGB output pins
      FT813_memWrite8(REG_PCLK_POL, 1);      // Define active edge of PCLK
      FT813_memWrite8(REG_CSPREAD, 1);      // This bit controls the polarity of PCLK.
      FT813_memWrite16(REG_HSIZE,   800);      // Active width of LCD display
      FT813_memWrite16(REG_VSIZE,   480);      // Active height of LCD display   

      FT81x_GPIO = FT813_memRead8(REG_GPIO);  // Read the FT800 GPIO register for a read/modify/write operation
      FT81x_GPIO = FT81x_GPIO | 0x80;         // set bit 7 of FT800 GPIO register (DISP) - others are inputs
      FT813_memWrite8(REG_GPIO, FT81x_GPIO);  // Enable the DISP signal to the LCD panel
      
      // Can move these 2 lines to after the first display list to make the start-up appear cleaner to the user
      // FT813_memWrite8(REG_PCLK, 2);           // Now start clocking data to the LCD panel
      FT813_memWrite8(REG_PWM_DUTY, 127);

I've debbuged my code and I read 0x7C, so the init sequence is executed..

Hi, we are starting to use FT813 to control a TFT display in a new project.

For now, as you can see in the attached image, we have created a simple composition, but we always get a divided screen and you can see the "rainbow" at the right side. I don%u2019t know how to solve this.

Our screen is 800 x 480 (T500T01X00)

It is our initial sequence (SPI speed is less < 11 MHz)

                HAL_Delay(200);
                FT813_PDN_OFF;
                HAL_Delay(20);
                FT813_PDN_ON; //Activa Power Down
                HAL_Delay(20) //Requerit
               
                FT813_cmdWrite(FT813_CMD_CLKEXT);                              // clock extern
                FT813_cmdWrite(FT813_CMD_ACTIVE);                              // activa el chip

if (FT813_memRead8(REG_ID) == 0x7C) {                            // espera a identificar el xip
                               
                               // WQVGA display parameters
                               FT813_memWrite16(REG_HSIZE,   800);                // Active width of LCD display
                               FT813_memWrite16(REG_HCYCLE,  928);             // Total number of clocks per line
                               FT813_memWrite16(REG_HOFFSET, 88);             // Start of active line
                               FT813_memWrite16(REG_HSYNC0,  1);                 // Start of horizontal sync pulse
                               FT813_memWrite16(REG_HSYNC1,  48);              // End of horizontal sync pulse
                               FT813_memWrite16(REG_VSIZE,   480);                // Active height of LCD display   
                               FT813_memWrite16(REG_VCYCLE,  525);             // Total number of lines per screen
                               FT813_memWrite16(REG_VOFFSET, 32);             // Start of active screen
                               FT813_memWrite16(REG_VSYNC0,  0);                 // Start of vertical sync pulse
                               FT813_memWrite16(REG_VSYNC1,  3);                 // End of vertical sync pulse
                               FT813_memWrite8(REG_SWIZZLE,  0);                  // Define RGB output pins
                               FT813_memWrite8(REG_PCLK_POL, 1);                // Define active edge of PCLK

                               FT81x_GPIO = FT813_memRead8(REG_GPIO);  // Read the FT800 GPIO register for a read/modify/write operation
                               FT81x_GPIO = FT81x_GPIO | 0x80;         // set bit 7 of FT800 GPIO register (DISP) - others are inputs
                               FT813_memWrite8(REG_GPIO, FT81x_GPIO);  // Enable the DISP signal to the LCD panel
                               
                               // Can move these 2 lines to after the first display list to make the start-up appear cleaner to the user
                               FT813_memWrite8(REG_PCLK, 2);           // Now start clocking data to the LCD panel
                               FT813_memWrite8(REG_PWM_DUTY, 127);



                               val = SI;               
                               }
                else val = NO;

I've changed the values of this configurations, but I got the same result. Based on your experience, what could be the problem?

Thank you in advance