H7S7 GPU2D stuck at nema_wait_irq_cl

[amb]

I made a custom board with STM32H7S7 , Touchgfx without OS, 2 framebuffers in psram(aps256xxn). At first ,after start

the debugging ,the display is normal,but after a while (random time),display is  freezing. Then I pause the program,I found

it stuck at nema_wait_irq_cl.

 

 

This is my screen:

This is information when stuck:

This project is a test project,the touchgfx code is simply rotate textureMapper1 and move red box on each frame

 

 

[Hamady]

Hi 

Maybe check this forum where the same issue is described.

 

I recommand to create a example project in touch gfx designer , open the code and check that the MPU settings are the same and same for linker script.

 

H7S7 is quite prone to issue if memory management isn’t perfect 

[amb]

Hello ​@Hamady 

I disabled all CPU Icache and Dcache,also the MPU.Is that a problem?

[Hamady]

If you disable I and D cache you will destroy the performance of the chip i recommand you to enable it 100%

 

MPU is also very important to manage all memory zone of the H7S7.

 

Re-enable the cache and use MPU config of a created project in touch gfx designer .

 

Also check that DMA2D an 2DGPU interrupt are enabled in cube MX

 

This can also help you with MPU config.

https://support.touchgfx.com/docs/development/scenarios/running-graphics-on-stm32h7r

[amb]

I noticed the GPU2D have error callback fired,So I placed break point in this function:

val in first line is 464 every time,what dose this value means?What kind of error I am facing?

Can I ask some @ST support to help me out?

void HAL_GPU2D_ErrorCallback(GPU2D_HandleTypeDef *hgpu2d)

{

uint32_t val = nema_reg_read(GPU2D_SYS_INTERRUPT); /* clear the ER interrupt */

nema_reg_write(GPU2D_SYS_INTERRUPT, val);

 

/* external GPU2D cache maintenance */

if (val & (1UL << 2))

{

HAL_ICACHE_Disable();

nema_ext_hold_deassert_imm(2);

}

if (val & (1UL << 3))

{

HAL_ICACHE_Enable();

HAL_ICACHE_Invalidate();

nema_ext_hold_deassert_imm(3);

}

 

return;

}