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Updated Slow SPI (markdown)

Eric Helgeson 2022-10-07 15:20:20 +00:00
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Slow-SPI.md

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BlueSCSI will try to communicate with your SD card at full and half speed SPI before giving up.
If your card is communicating at half speed it could impact performance. Try the following to resolve:
If your card is communicating at 25MHz it has about a 5% performance hit (not much, but worth investigating!)
Do a full overwrite format with [SD Formatter](https://www.sdcard.org/downloads/formatter/)
**Try the following to resolve:**
Clean the SD Card contacts with IPA and let fully dry, a bad connection can sometimes cause this.
Try a different SD card, some SD cards may not be able to communicate at full SPI.
* Check for bridges on your SD card holder
* Update to the latest firmware
* Do a full overwrite format with [SD Formatter](https://www.sdcard.org/downloads/formatter/)
* Clean the SD Card contacts with IPA and let fully dry, a bad connection can sometimes cause this.
* Try a different SD card, some SD cards may not be able to communicate at full SPI.