GPS (GP-20U7) + Raspberry Pi 2
From ESE205 Wiki
- Voltage and Ground - There will be 3 wires: a red one for voltage, usually indicated by VCC, and a black one for ground, indicated by GND. Connect the VCC to the 3.3V pin and the GND to the GND pin.
- Locate serial pin on GPS - As with any GPS, we need to locate the serial connection for the GPS. There should be one more serial wire connected to the rx or tx pin of the GPS. It should be tx if you wish to receive GPS data on the Raspberry Pi.
- Connect to corresponding serial pin on Raspberry Pi - Once you know which GPS serial lead you have, connect it to the opposite serial pin on the Raspberry Pi so they may communicate data. (rx to tx, tx to rx)
Connecting GPS to Serial Port
Open Serial Port using terminal commands below:
Select 8, A8, no, ok, finish
dmesg | grep tty
Configure for GPS by matching the baud rate, parity, stop bits, and bit size to thevalues provided.
def set_up_gps(): ser = serial.Serial( port = '/dev/ttyAMA0', baudrate = 9600, parity = serial.PARITY_NONE, stopbits = serial.STOPBITS_ONE, bytesize = serial.EIGHTBITS, timeout=1 ) counter=0 return ser