Andy4495 / GPS-Breakout-with-LCD

GPS Receiver setup using Tiva TM4C LaunchPad, SparkFun ZOE-M8Q GPS breakout, and CrystalFonz 8x2 LCD.

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GPS Receiver ZOE-MQ8 with LCD Display

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GPS Receiver hardware and sketch using Tiva TM4C LaunchPad, SparkFun ZOE-M8Q GPS breakout, and CrystalFonz 8x2 LCD. The sketch is based on Example12_UseUart.ino by Nathan Seidle from the SparkFun u-blox Arduino Library.

Implementation

The ZOE-M8Q I2C interface is unreliable in my setup. I am not sure if this is a problem with the hardware or the SparkFun library. This sketch uses UART to communicate between the LaunchPad and the GPS module, without issue. The Tiva TM4C LaunchPad has 8 available hardware serial ports. This sketch uses UART module 1 (accessed using the "Serial1" object). Debug information is sent through the usual "Serial" USB backchannel.

The LCD display cycles between several GPS data values (lat/long, altitude, # satellites, ground speed, date/time). Hold down "SW1" on the LaunchPad to freeze the display at the current reading.

Hardware

The GPS can LCD are connected to the LaunchPad as follows:

LaunchPad   GPS  LCD    Signal Name
---------   ---  ---  ----------------
     1       4          3V3
     2       
     3       2          LP RX1 <- GPS TXO
     4       3          LP TX1 -> GPS RXI
     5
     6
     7
     8
     9       7          SCL (This sketch does not use I2C)
    10       8          SDA (This sketch does not use I2C)
    11           4      RS
    12           6      E
    13          11      DB4
    14          12      DB5
    15          13      DB6
    16
    17
    18          14      DB7
    19
    20      6    1,5    GND (LCD pin 5 is R/W*)
    21           2      +5V (VDD)
                 3      Vo (wiper pin on 10K pot tied between +5V and GND)

External Libraries

References

License

The software and other files in this repository are released under what is commonly called the MIT License. See the file LICENSE in this repository.

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GPS Receiver setup using Tiva TM4C LaunchPad, SparkFun ZOE-M8Q GPS breakout, and CrystalFonz 8x2 LCD.

License:MIT License


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