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Yunus ARI
Yunus ARI
Senior
February 24, 2022
Question

How to solve hardfault problem when using video decoding feature?

  • February 24, 2022
  • 5 replies
  • 1840 views

Hi Everyone,

I am tryin to use video decoding that came with TouchGFX 4.18 version. I have a hardware with STM32H743. I can use video decoding with "Direct to Frame Buffer" stretagy buy it's creat some corruption in frame. Image just sliding little bit on screen sometimes. I think, it probably decoding speed cannot reach to flashing speed sometimes.

So I decide to change decoding strategy. If I could use double buffering it will be solve speed problem. Video maybe glitch sometime but whole screen wont. But when I slect stretagy to other than "Direct to Frame Buffer" come go hardfoult coused by semaphore.

Is any one have this problem yet? Any advice would be helpful. Thank lot.

This topic has been closed for replies.

5 replies

Osman SOYKURT
Osman SOYKURT
ST Technical Moderator
March 4, 2022

Hello Yunus ARI,

Have you followed this documentation (+ this one) when you configured your board on STM32CubeMX ? Can you share your configuration with us ? (Multimedia ->JPEG / Middleware->LIBJPEG / Software Packs ->TouchGFX Generator->Video Decoding)

/Osman

ST Software Developer | TouchGFX
Yunus ARI
Yunus ARIAuthor
Senior
March 4, 2022

Hi Osman,

I was not followed that documents before. Thank you share but it's not solve problem either. You can find configurations of my project below. I also add hard fault call stack.

Thanks in advance

/Yunus

0693W00000KbTfRQAV.png0693W00000KbTfgQAF.png0693W00000KbTfbQAF.png0693W00000KbTf2QAF.png

Osman SOYKURT
Osman SOYKURT
ST Technical Moderator
March 7, 2022

Hello Yunus ARI,

Did you add the code to configure the MDMA like mentioned ?

In Core\Src\stm32h7xx_hal_msp.c :

void HAL_JPEG_MspInit(JPEG_HandleTypeDef* hjpeg)
{
 if(hjpeg->Instance==JPEG)
 {
 /* USER CODE BEGIN JPEG_MspInit 0 */
 hmdma_jpeg_infifo_th.Init.Request = MDMA_REQUEST_JPEG_INFIFO_TH;
 hmdma_jpeg_outfifo_th.Init.Request = MDMA_REQUEST_JPEG_OUTFIFO_TH;
 /* USER CODE END JPEG_MspInit 0 */
 ...

Also, make sure you have a good configuration of FreeRTOS as described here.

0693W00000KbfMgQAJ.png 

/Osman

ST Software Developer | TouchGFX
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