On Mar 1, 2018, at 20:31, Luke Kenneth Casson Leighton <l...@lkcl.net> wrote: > On Thu, Mar 1, 2018 at 10:02 PM, Richard Wilbur > <richard.wil...@gmail.com> wrote: >> If we did decide to roll a v1.8 micro-desktop board, it would afford >> us the opportunity to bring two of the presently unconnected GPIO18-21 >> lines to the expansion header in place of VESA_SCL and VESA_SDA (which >> are after all available on pins 15 and 12 of the VGA connector). If >> VESA_SCL and VESA_SDA are more useful on the expansion header then, by >> all means, forget this suggestion. > > the reason i brought those out is just in case someone decided they > wanted to use them as plain GPIO.
Having the most available GPIO pins sounds like a great goal for the micro-desktop. But at the expense of a fully operational VGA interface when we have four more GPIO pins that we could choose from--seems like maybe we could take a better tradeoff? >> The other option to accommodate all our GPIO goodness would be to >> replace J5 (2x10 header) with a 2x11 or 2x12 header > > yep. I would vote for a 2x11 header with the four other GPIO's connected and the VESA DDC lines not connected to the expansion header. That only requires the expansion to extend in length by 10%. _______________________________________________ arm-netbook mailing list firstname.lastname@example.org http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to arm-netb...@files.phcomp.co.uk