Pinebook SDIO gpio control using SD card slot blog post
#2
(07-20-2017, 04:56 PM)MarkHaysHarris777 Wrote: This is my first experiment with bringing some of the A64 gpio mux lines to the outside via the SD card slot;  SDIO.  These are data lines D0-D3, CMD, CLK, VDD, & VSS.  The lines are gpio160 - gpio166;  PF0 - PF6.

The pic above is the 48cm ribbon cable that extends the SD micro slot to a full size card adapter;  this ribbon is useful in itself;  but I plan to modify it for pin access on a solderable bread-board.

 

These two shots are the modified ribbon cable;  this was actually easier than I expected.  The cable will extend under the notebook.

 

The two shots above show the finished cable running;  I have the green and red LED(s) initially connected to CMD and CLK.  These are pulsing at regular 3/4 second intervals (or so).  The gpio(s) are not useful in this state;  next I need to hack the dts and make sure that the pin function register has '0' s. 

Stay tuned.

Awesome


Messages In This Thread
RE: Pinebook SDIO gpio control using SD card slot blog post - by tllim - 07-21-2017, 12:56 AM

Possibly Related Threads…
Thread Author Replies Views Last Post
  pinebook 1080p power/barrel connector/cable cel 0 545 08-03-2023, 11:43 AM
Last Post: cel
  eMMC compatible with Pinebook leperotero 0 1,375 07-19-2022, 07:15 AM
Last Post: leperotero
Heart [solved] Anyone selling their Pinebook? feyn 0 1,224 07-11-2022, 03:38 PM
Last Post: feyn
  Move PB Pro eMMC 128 GB to Pinebook 11 1080p petet0n76 1 1,632 06-07-2022, 10:35 PM
Last Post: tllim
  UART switch Pinebook 11.6" irongarment 3 3,318 01-03-2022, 03:28 AM
Last Post: kqlnut
Exclamation "6" Key direly needed for 11" Pinebook Corkonian 1 2,605 09-25-2021, 12:03 AM
Last Post: tllim
  SD card read/write troubles jezek 1 2,993 03-26-2021, 09:27 AM
Last Post: jezek
  Pinebook 14 " Battery Swollen/Bulged billjon 1 3,613 01-13-2021, 11:03 AM
Last Post: barray
  touchpad on pinebook issues? ron_burgundy 14 13,794 12-19-2020, 06:55 PM
Last Post: ron_burgundy
  CH341 boards for GPIO xalius 1 4,137 11-22-2020, 10:50 AM
Last Post: pinephonenewbee

Forum Jump:


Users browsing this thread: 1 Guest(s)