[Solved] Accessing Spark Core variables via CURL

Troubleshooting
1

I am playing around with the GPS application on my Spark Core.

If I use the following URL in Chrome browser (Access token and ID are dummy ones)

https://api.spark.io/v1/devices/53af72066678505545451467/events?access_token=e3273ffe51b907473c4b488962dd2c2d18f19ff3

Only when the event is published by the Spark Core, the browser window updates with the following. I was hoping the API would just give me the last time the variable gpsloc was last updated.

:ok

event: gpsloc
data: {"data":"-42.909233,147.419235","ttl":"60","published_at":"2015-02-08T04:34:40.741Z","coreid":"53af72066678505545451467"}

I want to retrieve the variable gpsloc using curl, but it will not work?? I assume I would just use the following command

curl https://api.spark.io/v1/devices/53af72066678505545451467/gpsloc?access_token=e3273ffe51b907473c4b488962dd2c2d18f19ff3

But I just get the following error

{
  "ok": false,
  "error": "Variable not found"
}

Any help appreciated.

Kind regards
Stephen

2

@sconrad, seems like you are using Spark.publish()?

You might want to read the docs further and use Spark.variable() instead:

http://docs.spark.io/firmware/#cloud-functions

1 Like
3

Thanks so much… Worked like a charm :smile: I have only been working with the Spark Core for 2 days… I must say I am loving it so far.

void setup(){
    Serial1.begin(9600);                    // Serial comms for talking to GPS module
    pinMode(led2, OUTPUT);                  // Set led2 (D7 onboard LED) as an output
    Spark.variable("gpsloc", szInfo, STRING);
}

Output is now.

{
  "cmd": "VarReturn",
  "name": "gpsloc",
  "result": "-42.909229,147.419312",
  "coreInfo": {
    "last_app": "",
    "last_heard": "2015-02-08T05:36:18.829Z",
    "connected": true,
    "deviceID": "53af72066678505545451467"
  }
}
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