Facing an issue while creating external loader for Nucleo-G491

[VPana.1]

Dear @Tesla DeLorean and @KDJEM.1 

I am using NUCLEO-G491RE board and i want to create external flash loader for W25Q64JVSSIQ QSPI flash memory. I used external loader files from Github and build the .stldr file and placed in CubeProgrammer. when i try to read from 0x90000000 location, i am getting read failure error. I used the below path to create external loader for W25Q64JVSSIQ QSPI flash memory,

https://github.com/STMicroelectronics/stm32-external-loader/tree/contrib/Loader_Files/other%20devices

Driver code is working fine since I am able to see the data in memory mapped mode with test code provided in the github link.

But, when create a external loader using github files and placed .stldr file into cubeprogrammer and working on read/write/erase and these operations are failing.

Could you please check my project and do needful. PFA for my loader project

Thanks

[Tesla DeLorean]

https://github.com/cturvey/stm32extldr/tree/main/g4_w25q64

Try the PB10,PB11,  PB1,PB0,PA7,PA6

[VPana.1]

Dear @Tesla DeLorean ,

Thanks for your quick feedback. I've tried with the above mentioned option and still read, erase and write operations are failing.

I am seeing Init function fail when i set  log level to 3

Below is the reference screenshot

[VPana.1]

I am working on a project and this external loader creating a problem for me. Request your support

[VPana.1]

@KDJEM.1 : I have seen you are giving feedbacks on external loader. Could you please support on this issue. If you are busy with your tasks, could you please recommend to your colleagues. 

[Tesla DeLorean]

I'll have to double check. Typically mine will fail Init() if the devices don't report as expected. What does READ ID report in your application space BSP/CSP implementation?

[VPana.1]

Hi @Tesla DeLorean ,

Thanks for your reply.

Device ID is reading correctly. For W25Q64JVSSIQ, Device is = 0xEF 40 17

// Manufacturer ID = w25q64_jedec_id[0]; // 0xEF (Winbond)
// Memory Type = w25q64_jedec_id[1]; //  0x40
// Capacity = w25q64_jedec_id[2]; // 0x17 for 64Mbit

CSP Implementation Screenshot:

[KDJEM.1]

Hello @VPana.1 ;

Could you please check the dummy cycle number and the hardware connection.

I recommend you referring to MOOC - External QSPI loader how to - YouTube and get inspired to check your configuration.

Thank you.

Kaouthar

[Tesla DeLorean]

Ok

I've looked over the code I have, and not finding specific issues with it, but also I don't have equivalent hardware to test on the G4.  Or whether the G474 and G491 differ in implementation details.

[VPana.1]

Hi @KDJEM.1 ,

Thanks for your feedback. I am exactly following the same as mentioned in the MOOC.

Using 6 dummy cycles for MemoryMappedMode()

PFA for external loader project. Please the source files and let me know if any modifications are required.