Software UART (receive only) for GPS, which pin?
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blueroomelectronics
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Software UART (receive only) for GPS, which pin?
I've got the EUSARTS tied up for other things and I only need a single I/O pin with a 22K resistor to receive GPS NMEA data at 4800bps. Although any I/O pin would work the question is would there be less software overhead to use a pin like INT0 for an interrupt driven UART or just poll the pin with a timer interrupt?