For a little IoT project I need to read from an external JSON file within an Arduino code.
Happily there is the ArduinoJson library.
However, I'm only able to read JSON objects which were created in the same sketch. But I need to read from an external .json file.
I have seen the example sketch JsonServer at Examples/ArduinoJson, but I don't know how to configure it properly. I'm playing with an ESP8266-01 Wifi module. I'm using the Arduino IDE 1.6.5
Can someone give some concrete instructions how I can get the JsonServer example running?
Thanks in advance!
For a little IoT project I need to read from an external JSON file within an Arduino code.
You will need something to read the file and send the data to the Arduino. It can not read a file on some other device.
Can someone give some concrete instructions how I can get the JsonServer example running?
Not without knowing what problems you had/have getting it to work.
The lady in this post (Internet Controlled LED using ESP8266) uploaded a server side PHP file and a JSON file on a server and obviously fetched data of the JSON file with the Arduino sketch which she uploaded on a ESP8266-01 Wifi module (which you can program with the Arduino IDE). I tried to reconstruct this example, however I think I fail at the basics of reading the JSON file.
and obviously fetched data of the JSON file with the Arduino sketch
Well, she fetched data from the PHP script which got it from the JSON file.
I tried to reconstruct this example, however I think I fail at the basics of reading the JSON file.
Where you failed was in the "POST YOUR CODE" department. (And maybe other places)
I'm not sure.
I have just made a little screen cast which shows what I'm doing:
I guess I misunderstood the "POST YOUR CODE" sections?