Datasheet

Built In Logging

For more details, you can read the LOCUS (built-in-datalogging system) user

guide (http://adafru.it/dL2)

Built In Logging

One of the nice things about the GPS module on the shield is the built in data-logger. This basic

data-logging capability can store date, time, latitude, longitude and altitude data into a 64K flash

chip inside. Its not a high resolution logger - it only logs once every 15 seconds when there is a fix -

but for some projects that want to track location, this can be a great low power way to log data - no

SD card required! It can store up to ~16 hours of data.

The GPS module does require the Arduino to 'kick start' the logger by requesting it to start. If power

is lost it will require another 'kick' to start. If you already have some data in the FLASH, a new trace

will be created (so you wont lose old data) and if you run out of space it will simply halt and not

overwrite old data. Despite this annoyance, its still a very nice extra and we have some library

support to help you use it

First, we should try getting the logger to run. Make sure the switch is set to SoftSerial

Open up the File®® Examples®® Adafruit_GPS®® locus_start sketch and change the line

SoftwareSerial mySerial(3, 2);

SoftwareSerial mySerial(8, 7);

and upload it to the Arduino. Then open up the serial monitor. If you have an Uno or compatible you

will see the echo'd data. Leonardos will not see the echo data but you should still see a message

that says "STARTING LOGGIN...STARTED!"

The built in logging capability isn't easy to use with the Shield - we wanted to make it better for

SD logging so while we do have some details here, its not well supported and not

recommended

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