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GPS Communications

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I've empirically determined that one has to use RTS/CTS flow control with the GPS module - it simply produces data faster than the Beaglebone can process it.

This just means that we'll be using more pins. And with the Beaglebone's multiplexed I/O system, it could mean that the processor spends more time handling the device than running the application software. However, this will need more testing to be sure.