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Hi Sven, Thank you for your explanation. Finally, sending data by SPI line by line is quite fast for the application even if it is a little slower than in parallel mode. Kind regards,

Hello, I'm porting a project from 16-bit parallel driving to the SPI bus. The screen is 240 x 320 x 2 bytes. I'm at the maximum SPI: 32MHz I calculated that the refresh of full screen is around 40ms, but in reality it takes around 100ms. I think the bottle neck is LcdWriteDataMultiple function which send data by line (640 bytes). I use this init: Source Code (1 line) Can you tell me if it is possible to transmit the entire framebuffer by only one call of LcdWriteDataMultiple()? Thank you, Pierre

One more thing: In the STM32 RM it is said: "For LTDC outputs up to 24-bit (RGB888), if less than 8 bpp are used to output for example RGB565 or RGB666 to interface on 16- or 18-bit displays, the RGB display data lines must be connected to the MSB of the LCD-TFT controller RGB data lines. As an example, in the case of an LCD-TFT controller interfacing with a RGB565 16-bit display, the LCD display R[4:0], G[5:0] and B[4:0] data lines pins must be connected to LCD-TFT controller LCD_R[7:3], LCD_G[…

Hello, The project comes out of the fridge ... In addition to the line problem like in the previous post, I have another problem that I can not solve. I do not have an external RAM (screen is 800x480), so I have to use in 8 bit (grayscale or color). But the screen displays color that does not match. And I tried several GUICC_XX. When I look at the oscilloscope, it seems that all bits (24) are driven. Normally only MSBit in color channels should be driven... The code is in attachment. Thank you. …

Hi, I use GUI_MEMDEV_DrawAuto() and I display some text and picto in the callback function. But my customer would like an image background(full screen) and it slows down the reactivity when he pushes the touchscreen. In fact in the callback I call GUI_clear() and then GUI_DrawBitmap() background, and redraw all texts and pictos. Is there a solution to get two separated layers without refreshing the background when it is not necessary? Note I'm on STM32L4R7. Thank you, Pierre

Hello, I'm testing a new LCD with LTDC RGB interface from STM32L4R7. Until now I can show string (GUI_DispString()) and bmp (GUI_DrawBitmap()). So far so good. But it is not possible to display line, rectangle, circle and so on. It is very strange... Set pen size is on 10. Any idea? Thank you Pierre

Hello, I'm using the ILI9488 controller on my LCD. It supports 18-bit interface and 18-bit RGB. Unfortunately, the configuration with GUIDRV_FLEXCOLOR_F66709 doesn't accept more than 16bit. No solution to play with the full color of the LCD in 18bit? kr, Pierre

Hello, I tested VNC server on STM3240/STEMWIN with success. But now I'm testing on my own board with a different LCD controller. Unfortunately the vnc image in client is very bad; impossible to read a string printed on LCD. I compared the both TCP exchange in Wireshark and it seems that it is the same. I think that the configuration is automatic and there is no settings to change in the project settings/*.h. Pierre.