Pinebook SDIO gpio control using SD card slot blog post

The above pics are option (2);  the model from Sparkfun is a little more expensive, but arrived in two days.  The Chinese version will be here in 30 days from Shenzhen (if I'm lucky with customs).  These plug directly into the micro SD slot (although its a little tricky, I did have to use the dremel tool).  The layout is similar but different; in this model the Vss and Vdd are together in the center.


Again, we have tapped the gpio(s) after mounting header pins on the sniffer card;  the sniffer card is designed to be a logic test point for logic analyzer.  I won't be pushing an SD card in the slot but will experiment with the gpio(s) using this direct interface.

Note:  pin (CD) is card-detect ;  also  D3.

marcushh777    Cool

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RE: Pinebook SDIO gpio control using SD card slot blog post - by MarkHaysHarris777 - 07-22-2017, 02:02 PM

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