Unable to post to Thingspeak channel via TCP

Question

Emilio Rubio Garcia 2020-1-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/500579-unable-to-post-to-thingspeak-channel-via-tcp

编辑： Christopher Stapels 2020-1-21

Dear Mr.:

I've got problem for uploading data to my channe. I am not been able to post (via Get sentence) in my channel (949075) for trials, although I'm getting the right answer from your server. I can see that data is not uploading because it is not appearing in downloaded files. I have been able to post (same Get way) but I had to change Arduino sketch because it was not stable. Is now that it is stable, because I am getting the right sequence of messages from your server. It took a lot of time and trials before I have been able to upload data.

Could you, please, help me for solving issue?

Please, let me know if I should do anything by my side.

Thank you very much in advance.

Emilio Rubio.

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Christopher Stapels 2020-1-17

编辑：Christopher Stapels 2020-1-21

How do you know the data is not uploading? When you look at the data in your channel, do you get no entires? You can use the format

https://thingspeak.com/channels/949075/feeds.json?api_key=XXXXXXXXXXXXXXXX

To see the data in your channel. (replace the x with your read api key)

Do you see the data you posted there with that url?

If you are using an arduino, I reccomend the ThingSpeak communication Library for Arduino - it does most of the posting work for you and makes sure to get the sequences correct.

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Answer 1

Emilio Rubio Garcia 2020-1-17

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Hi, I'm quite sorry because at the time I wrote comment I was not being able to upload data for a long time because I did't see that there was a mistake in my code. Now I am already being able to upload data to server. By the way, I would like to know if there is a way for uploading data to server keeping session alive or do I have to open-send-close connection every time I need to upload records. Thank you very much in advance and apologize for the inconvenience. Regards. Emilio Rubio.

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Answer 2

Christopher Stapels 2020-1-17

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https://ww2.mathworks.cn/matlabcentral/answers/500579-unable-to-post-to-thingspeak-channel-via-tcp#answer_410673

No problem. If you look at the code in the doc examples, the way I generally do it is to check the connection for each loop, but im my experience, the connection will stay unless you go out of wifi range. I would really reccomend using the ThingSpeak Arduino library to manage your connection.