Olivér Pirger

After hours of work, I finally got a real SD card working over SPI. On the screenshot you can see it reading the first sector (the Master Boot Record) of a real microSDHC card.

I’m so back!

Today I added file reading, API compatible with embedded-io-async. sd-fat now reads whole files with .read_exact(). Also did a bit of cleanup around the project and updated dependencies.

Driver already works! Implemented sensor initialization and command mode reading. There’s also a convenience function for reading both pressure and temperature. Readings are accurate. Returns values in hectopascals (hPa) and degrees Celsius (°C).

I created a crates.io page for trying out the package if you happen to have this sensor.
https://crates.io/crates/dps310-async

I also wrote a little readme.

What I did today:

• directory traversal is complete: open directories by path
• find entries in a directory by name
• cleaned up the internal and public APIs for cleaner code overall

Started the project. Here are a few things that are already working:

• Implemented a RAM based disk “emulator” for testing: loads .img files
• Parse MBR, find partition
• Parse BPB, find root directory
• List entries in any directory by cluster number
• An extensible API for future expansion: more file systems, partition tables, and block device implementations
• All this without using the standard library and a heap allocator

I’m working on my first project! This is so exciting. I can’t wait to share more updates as I build.