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Issue with Touchgfx + stm32f769NI MIPI-DSI interface

kD1
Associate II

Hi STM, we are working with MIPI DSI interface using STM32F769NI controller and 240x320 display resolution. We are having order of 10K if project is success.

Firstly I have generated code using TouchGFX 4.14 and Immediately i have opened STMcubeMx 5.6.1 and configured with following parameters that display supports.

  1. LTDC configured with 240x320, window 240x320, and all sync values like hs,vs,vbp,vfp,hbp,hfp, Display type 16bpp, single layer.
  2. DSI with single lane, color coding 16bpp, command size 240,
  3. DMA2D with color mode rgb565.
  4. Touchgfx with 240x320, rgb565.
  5. DSI Mbps with 500, DSI lane byte 62.5, LTDC Mhz 500/16 = 31.25

After Configuration opened touchgfx and created a box with Red color.

My issues are

  1. Does Configurations are correct.
  2. Not entering into gotoScreen1ScreenNoTransitionImpl after changing ORIENTATION_LANDSCAPE also

Please respond

2 REPLIES 2
MM..1
Chief II

I mean you have some mistakes here. Generating code isnt prepared for run. You need add driver dispaly code and start touchgfx process as default.

Too change rtos stack size. Too need control backlight.

Before start use touchGFX you need prepare display, good for testing is function HAL_DSI_PatternGeneratorStart(&hdsi, 0, 1);

...HAL_DSI_PatternGeneratorStop(&hdsi);

Martin KJELDSEN
Chief III

You might want to have a look at https://support.touchgfx.com/docs/development/board-bring-up/board-introduction for general preparations to run TouchGFX. Get back to me.