Clarification on flash blobs

[vincent290587]

Hi all,

I am currently adding support for STM32F723 (USB HS) based Daplink.

My target is a STM32H7 chip with external memories (over SPI), I would like to be able to program both the internal memory and the external memories of the H7 target.

• Is that even possible ?
• Is there documentation on how the programming (e.g. in OpenOCD differs in order to program internal/external ?

If so I assume the FLashBlob project is the way to go, correct ?

[mbrossard]

I know of one example that has two flash algos, one of which is QSPI:

• This where the multiple flash algos are defined: https://github.com/ARMmbed/DAPLink/blob/main/source/family/arm/musca_b/flash_blob.c
• You can define the target with multiple regions and specify for each which flash algo to use: https://github.com/ARMmbed/DAPLink/blob/main/source/family/arm/musca_b/target.c

Source for QSPI flash algo: https://github.com/pyocd/FlashAlgo/tree/main/source/arm/mt25ql512