OT: PIC Bootloader via SD/MMC feedback

[asmallri]

Hi all,

I'm implementing a PIC bootloader that will download an image from an SD/MMC card. There are a number of bootloader mechanisms and I may implement more than one approach (not in the same image)

One option I am considering, and the one I am asking for feedback on, is making the bootloader file system aware. The upside with this approach is that no special tools are required on the PC side. The down side is the bootloader footprint will be larger than a non file system aware and, in order to keep the footprint low, the image must be in the root directory and only FAT16 will be supported.

The bootloader would store any user configurable info in its program memory (such as the PIC's current image name, current image date, and bootloader configuration options such as, target image name, bootloader if newer, bootload never, bootload always.

I'd welcome any feedback on the above and any "must have" or "highly desirable" features.
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Regards, Andrew

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