[OSM-talk] South Downs Way

[Raphael Jacquot]

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Robert Scott wrote:

> Replying to myself here, but I didn't realise that MMC cards use an SPI 
> interface - so writing to it from a PIC is easy. The only painful bit is, 
> again, the filesystem. But you could always use your own very naive 
> filesystem which just started a new track every 512kB or so.
> 
> I was thinking of a more powerful system so that you would be able to gzip the 
> data onto the storage device, but there's no reason you can't implement gzip 
> (or an even simpler stream compression algorithm) on a PIC. Memory would 
> probably be the constraint on the compression ratio.
> 
> Combine a £2 PIC with a (don't know the price. ~£30 I guess) OEM sirfstar III 
> UART unit and you might have something very useful.

I was shown that exact hardware last week at the RMLL... stay tuned ;D
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