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P9_28 not GPIO_123

loving2 opened this issue · comments

commented

Hi,

I've been working with interfacing a beaglebone green with an LVDS transceiver chip where I needed to use a GPIO pin to select either READ_ENABLE or WRITE_ENABLE for half duplex communication. I had decided to use P9_28. It wouldn't function at all when I looked up the documentation for the beaglebone green regarding which GPIO pin P9_28 was. Your documentation claims it to be GPIO_123. To be clear, I'm referencing the wiki page found at http://wiki.seeed.cc/BeagleBone_Green/ under the section labelled "Pin Map". The beaglebone black documentation claims P9_28 is GPIO_113. I thought perhaps the pins were named differently from green to black, but when I tried setting it up as GPIO_113 it worked perfectly.