Graphical LCD display with STM32303E Eval

[NSing.5]

i m using STM32303E Eval board. This board has SPI based GLCD (as per datasheet of Board) with is connected through SPI-2. i m using TOUCHGFX for display images and my application has only QR code in it. i have started from STCubeMX, enabled TOUCHGFX and CRC, included QRcode from TOUCHGFX and finally compiled code in IAR workbench.

The setting i have used in STCubeMX are attached as an image.

But screen is not showing any image (remains white in color).

i ve tried to debug and found a function hal.backPorchExited(); is not executing.

Void touchgfx_taskEntry()
{/** Main event loop will check for VSYNC signal, and then process next frame.
* Note This function returns immediately if there is no VSYNC signal.*/
  if (OSWrappers::isVSyncAvailable())
  {
    hal.backPorchExited();
  }
}

Now my question is

1. why the statement if (OSWrappers::isVSyncAvailable()) is always false and how to torubleshoot it.

2. IS it right to use TOUCHGFX for this board or i have to work with STemwin for this purpose.

waiting for reply

regards

[LouisB]

Hello @NSing.5,

You should be able to use your board, OSWrappers::isVSyncAvailable() is called when VSYNC happened. You need to have the VSYNC pin set up to use touchgfx.

Br, 

[NSing.5]

thanks for reply. sorry i was late to check your response. can you guide me how to enable VSYNC pin. or if you can suggest some reference tutorial for it.

regards 

[NSing.5]

How to set up the VSYNC pin using touchgfx.

[NSing.5]

How to set up the VSYNC pin using touchgfx. is there anyone in ST who can guide me?

[NSing.5]

i think there is no one to help me in ST

[LouisB]

Hello @NSing.5,

As you are using an eval board the Vsync is already connected (I first thought it was a custom board). Have you tried to folow all the steps in https://support.touchgfx.com/docs/development/board-bring-up/board-introduction ?

BR,

[MM..1]

SPI displays require your code to manage sync etc. Read TGFX docu for spi ... SPI Display Interface | TouchGFX Documentation