Clarification on flash blobs

ARMmbed / DAPLink

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Clarification on flash blobs #1073

Open vincent290587 opened 5 months ago

vincent290587 commented 5 months ago

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 commented 5 months ago

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