= Attaching a PA1010D Mini GPS module via I2C
This example code shows how to interface the Raspberry Pi Pico to the PA1010D Mini GPS module
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This allows you read basic location and time data from the Recommended Minimum Specific GNSS Sentence (GNRMC protocol) and displays it in a user-friendly format. The datasheet for the module can be found on https://cdn-learn.adafruit.com/assets/assets/000/084/295/original/CD_PA1010D_Datasheet_v.03.pdf?1573833002. The output sentence is read and parsed to split the data fields into a 2D character array, which are then individually printed out. The commands to use different protocols and change settings are found on https://www.sparkfun.com/datasheets/GPS/Modules/PMTK_Protocol.pdf. Additional protocols can be used by editing the init_command array.
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[NOTE]
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Each command requires a checksum after the asterisk. The checksum can be calculated for your command using the following website: https://nmeachecksum.eqth.net/.
The GPS needs to be used outdoors in open skies and requires about 15 seconds to acquire a satellite signal in order to display valid data. When the signal is detected, the device will blink a green LED at 1 Hz.
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== Wiring information
Wiring up the device requires 4 jumpers, to connect VDD, GND, SDA and SCL. The example here uses I2C port 0, which is assigned to GPIO 4 (SDA) and 5 (SCL) in software. Power is supplied from the 3V pin.
[[pa1010d_i2c_wiring]]
[pdfwidth=75%]
.Wiring Diagram for PA1010D.
image::pa1010d_i2c.png[]
== List of Files
CMakeLists.txt:: CMake file to incorporate the example in to the examples build tree.
pa1010d_i2c.c:: The example code.
== Bill of Materials
.A list of materials required for the example
[[pa1010d-bom-table]]
[cols=3]
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| *Item* | *Quantity* | Details
| Breadboard | 1 | generic part
| Raspberry Pi Pico | 1 | https://www.raspberrypi.com/products/raspberry-pi-pico/
| PA1010D board| 1 | https://shop.pimoroni.com/products/pa1010d-gps-breakout
| M/M Jumper wires | 4 | generic part
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