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Regarding MQTT client not receiving data from device

0

Hi,

we are sending json object comprising of following data.

  1. time
  2. sensor_a0
  3. ecg

Format for json data is [{"time":["2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37"],"sensor_a0":[0,1,2,3,4,5,6,7],"ecg":[0,0,0,-65533,-65534,-65535,-131069,-131071]}].

As you can see i am transmitting arrays of time, sensor_a0 and ecg as a single json object over mqtt. This works well up to 5 data samples. but when i tried to send more than 5 data samples to aws, it is not receiving anything. I have tested it by myself. I have checked documentation of aws that says that single object that aws iot core can receive json object having maximum size of 128KB.

  • Greg_B エキスパート
    1年前

    I have no problem with that payload in the MQTT test client in AWS IoT Core. What client are you using? Please tell us more about how you are publishing the message.

  • kushal
    1年前

    Hi @Greg B, I have found the solution. it is having limit set in pubsubclient library. not on AWS side. Thanks

トピック
モノのインターネット (IoT)
タグ
AWS IoT Core
言語
English
kushal
質問済み 1年前277ビュー
2回答
0
承認された回答

I have found the solution. it is having limit set in pubsubclient library. not on AWS side. Thanks

kushal
回答済み 1年前
0

Hi I am using aws iot core mqtt client. I am using esp32 as a device and send data using mqtt protocol. i am able to see output on my consol but when i see this output on aws, i am not getting anything. as i told you, for more than 5 msgs, i wont get anything.

kushal
回答済み 1年前

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