FWIW I figured out a quick way to add the last 10 locations. I haven't used it yet but my hope is to show a route in a google map (on my dashboard app)
I just wanted to share it in case it seems worth adding to the official driver. I could create a PR too but to be honest I've never written groovy before so I'm guessing there could be better ways to write this. But, it does work!
just 1 change to the device driver code:
attribute "history", "STRING"
Here's the app driver code changes (line 204)
...
// keep location history
def history = myDevice.currentValue("history")
// add current history to front of list
// format: lat,lng,date
def dt = new Date().format("yyyyMMddHHmmss")
history = "${lat},${lon},${dt}\n" + history
// only save last 10 locations
def historyArr = history.split('\n')
if (historyArr.length >= 10) {
history = ""
for(int i = 0; i < 10; i++) {
if (i > 0) history += "\n"
history += historyArr[i]
}
}
myDevice.sendEvent(name: "history", value: history)
...
The end result is a history attribute which saves the last 10 locations reported. It's just a comma-separated list (lat,lng,date) and each entry is newline separated.. JSON would be prettier but this was faster to implement.
