Place configuration file same way like firmware

[anklimov]

It might be very useful to have ability to place/edit some configuration data as file (config.json for example or any other pre-defined name ) Is it possible to do some like this?

[tusker-tools]

Do you mean a file for configuring the bootloader (same options as in btldr_config.h)?

[anklimov]

No, I mean configuration data for firmware. JSON configuration file, for example. (If file with pre-defined name placed to “mass storage”- just store it to configured flash region.)

In more complicated cases, “configuration file” listed permanently in fat16 root directory and allow reading and writing operations

Пн, 17 апр. 2023 г. в 21:40, tusker-tools @.***>:

Do you mean a file for configuring the bootloader (same options as in btldr_config.h)?

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[tusker-tools]

Ok, I think now I'm getting an idea. So you want to configure some parameters of the firmware (which resides in a dedicated configuration flash section) using a JSON file which will be uploaded to the mass storage?

[anklimov]

Yes, exactly.

Пн, 17 апр. 2023 г. в 23:18, tusker-tools @.***>:

Ok, I think now I'm getting an idea. So you want to configure some parameters of the firmware (which resides in a dedicated configuration flash section) using a JSON file which will be uploaded to the mass storage?

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-- WBR Andrey Klimov

[tusker-tools]

Nice idea! This would require the following steps:

• Write JSON parser
• Introduce a new erase logic to only erase the "config parameter" flash block
• Develop special data flash algorithm to write parameters to desired position
• Find method which enables an easy and comprehensive definition for the mapping of JSON parameter to a specific flash address

Would be a nice improvement if you (or an other volunteer) could develop this.

[anklimov]

Generally, not necsessary to deal with JSON from bootloader - It was noted just for example. Parsing data may performed by appropriate application. There are many parsers is availble. And not only JSON config is usefull here, Another example - gzipped file(s) for web backend. So the best way to have an array, like this, configired in some *.h file (shareble with main application)

FAT16_NAME | Flash_Offset | Size_limit|

config.json |0x80002000| 0x2000 index.html.gz |0x80004000| 0x4000 ... Regarding contribution - I'm not shure that have necsessary skills now, to do it. Currently, i've stuck with just testing original bootloader on my STMF103RBT MPU (I've compiled it by Keili 5 (with ARM compiller v6) , uploaded by STM32CubeProgrammer via UART but not get USB mass storage after reboot. Unfortunatelly, I didnt find any guidelines and/or instructions how to build it and upload in right way