External Memory Loader STM32H7S7 EXTMEM_MemCopy DMA Issue

[neset]

Hello there, 

I'm trying to create an external loader for my stm32h7s7-dk board via MCE.

I followed this https://www.youtube.com/watch?v=JxhKmVUB2Ws&list=PLnMKNibPkDnFQXYK0ztHV9iMVS6EAtKpD&index=10 tutorial series and i check the github repo of this project. But the repo and the video series can be different. The instructor might add some new things. But the methodlogy cant work. Its really stupidly. 

The loader writes only 0x00 to flash for app size.

Im adding my ss of the mem_copy, mem_write and mpu init codes here.
 

  Please help me.

[Saket_Om]

Hello @neset 

Please refer to the article below:

How to implement and use your own external flash l... - STMicroelectronics Community

[neset]

Hi @Saket_Om, actually i havent any issue about the external loader in normal write. I explained the issue on tab. https://www.youtube.com/watch?v=JxhKmVUB2Ws&list=PLnMKNibPkDnFQXYK0ztHV9iMVS6EAtKpD&index=10 could you check this video. The video contain the mce using via dma copy.  

[Hamady]

same issue @neset i was able to make mce works in cube h7rs v1.2.0 but in 1.3.0 the verification of the flash after downloading gives 0x00