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I'd be very surprised if there isn't a filesystem driver for SPI flash. Linux obviously can speak SPI and SPI flash is extremely common in a lot of applications
by mystified5016 2y ago
I'd be very surprised if there isn't a filesystem driver for SPI flash. Linux obviously can speak SPI and SPI flash is extremely common in a lot of applications.
- dmitrygr 2y agoI mean once assembled. In my design you can remove card, put files in, boot again, use the files.
- ajb 2y agoTheoretically you can use one of these: https://www.tindie.com/products/bobricius/micro-sd-card-to-spi-flash-adapter/ https://www.tindie.com/products/bobricius/micro-sd-card-to-s... I haven't tried it so I don't know how well it works
- Neywiny 2y agoIt looks like a passive mechanical adapter. I'd argue that a SOIC-8 programming clip thing would be better. This looks like you need to write a decent amount of code for a computer to talk to it as easily as a FAT-16 SD card.
- ajb 2y agoYou're right; it looks like SD cards implement a protocol on top of SPI. They don't just map the content to SPI addresses. So a flash chip won't look like an SD card to the OS
- Neywiny 2y agoRight. Unsure if it's possible that any SD controller has a secret SPI mode. This seems like a ridiculously niche product. Which is fine but just something to keep in the toolbelt.