[arm-allstar] USB GPIO pins

Lloyd Duck lduck at me.com
Mon Jan 15 14:12:46 EST 2018

I’m still working on channel steering a CDM1250 using DTMF. 

Here is the RB-USB RIM schematic and it has GPIO pins 5,6 and 7 to use for the steering. 

This is a USB device and I’m not sure how to control those. Any help? 


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Howard Co, Texas 
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