kopia lustrzana https://github.com/cyoung/stratux
Add setup script for MTK3339 based receivers
rodzic
da5f5d003d
commit
3d1af90d3d
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#!/bin/bash
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#
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# mtk_config.sh: Script to set up MTK3339 receiver for Stratux.
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# Resets receiver to 9600 and 1 Hz GPRMC messaging, then enables
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# WAAS, 5 Hz position reporting, the NMEA messages needed by
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# Stratux, and 38400 bps serial output.
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printf "About to configure MTK3339 receiver on /dev/ttyAMA0.\n"
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printf "Press ctrl-C to abort or any other key to continue.\n"
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read
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# Iterate through common bitrates and send commands to reduce output to 1 Hz / 9600 bps.
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printf "Setting MTK and RPi baud rate of /dev/ttyAMA0 to 9600. Iterating through common rates.\n"
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printf "Current /dev/ttyAMA0 baudrate.\n"
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printf "\$PMTK220,1000*1F\r\n" > /dev/ttyAMA0
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printf "\$PMTK251,9600*17\r\n" > /dev/ttyAMA0
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sleep 0.2
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printf "38400 bps.\n"
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stty -F /dev/ttyAMA0 38400
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printf "\$PMTK220,1000*1F\r\n" > /dev/ttyAMA0
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printf "\$PMTK251,9600*17\r\n" > /dev/ttyAMA0
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sleep 0.2
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printf "115200 bps.\n"
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printf "\$PMTK220,1000*1F\r\n" > /dev/ttyAMA0
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stty -F /dev/ttyAMA0 115200
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printf "\$PMTK220,1000*1F\r\n" > /dev/ttyAMA0
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printf "\$PMTK251,9600*17\r\n" > /dev/ttyAMA0
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sleep 0.2
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printf "57600 bps.\n"
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stty -F /dev/ttyAMA0 57600
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printf "\$PMTK220,1000*1F\r\n" > /dev/ttyAMA0
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printf "\$PMTK251,9600*17\r\n" > /dev/ttyAMA0
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sleep 0.2
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printf "19200 bps.\n"
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stty -F /dev/ttyAMA0 19200
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printf "\$PMTK220,1000*1F\r\n" > /dev/ttyAMA0
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printf "\$PMTK251,9600*17\r\n" > /dev/ttyAMA0
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sleep 0.2
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printf "4800 bps.\n"
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stty -F /dev/ttyAMA0 4800
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printf "\$PMTK220,1000*1F\r\n" > /dev/ttyAMA0
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printf "\$PMTK251,9600*17\r\n" > /dev/ttyAMA0
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sleep 0.2
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stty -F /dev/ttyAMA0 9600
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printf "\$PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29\r\n" > /dev/ttyAMA0
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printf "MTK has been set to 9600 baud with RMC messages at 1 Hz.\n"
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printf "Press ctrl-C to abort, or any other key enter to continue with setup.\n"
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read
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# Now start the Stratux setup.
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printf "Sending MTK command to set GPS baud rate to 38400\n"
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printf "\$PMTK251,38400*27\r\n" > /dev/ttyAMA0
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printf "Setting RPi baud rate of /dev/ttyAMA0 to 38400\n"
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stty -F /dev/ttyAMA0 38400
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sleep 0.2
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printf "Sending MTK command to configure NMEA message output\n"
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printf "\$PMTK314,0,1,1,1,5,5,0,0,0,0,0,0,0,0,0,0,0,0,0*29\r\n" > /dev/ttyAMA0
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sleep 0.2
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printf "Sending MTK commands to enable WAAS\n"
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printf "\$PMTK301,2*2E\r\n" > /dev/ttyAMA0
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sleep 0.2
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printf "\$PMTK513,1*28\r\n" > /dev/ttyAMA0
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sleep 0.2
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printf "Sending MTK commands to enable 5 Hz position reporting\n"
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printf "\$PMTK220,200*2C\r\n" > /dev/ttyAMA0
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# Finally, test the connection.
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printf "Opening /dev/ttyAMA0 to listen to GPS. Press ctrl-C to cancel.\n"
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cat /dev/ttyAMA0
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