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How do I calculate the total number of bytes in my upload write to a Thingspeak channel

3 vues (au cours des 30 derniers jours)
my code
int x = ThingSpeak.writeFields(myChannelNumber[ChID], myWriteAPIKey[ChID]);
  1 commentaire
Vinod
Vinod le 16 Juin 2021
ThingSpeak library handles calculation of payload size and formatting it as needed. Could you help me understand the use case for knowing the number of bytes of the upload -- if available, how would you use this information?

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Barnard Richards
Barnard Richards le 17 Juin 2021
I am going to be evaluating a Arduino MKR NB1500 to upload to a Thingspeak channel.
The Cell phone companies charge for the number of bytes transmitted. I want to know how many bytes i might be able to economically upload with particular SIM card account.
I know a Thingspeak message is limited to 3000 bytes.
  2 commentaires
Vinod
Vinod le 17 Juin 2021
Modifié(e) : Vinod le 17 Juin 2021
Uncomment the following #define in the ThingSpeak library, and it will print out the exact details of what is sent to ThingSpeak servers. You can then calculate the bytes sent.
#define PRINT_DEBUG_MESSAGES
Barnard Richards
Barnard Richards le 18 Juin 2021
Thanks Vinod,
My suggestion is that it would also be useful for Thingspeak to consider adding a get_data_length function to the Thingspeak library which can be called from the Arduino sketch.
but thanks again.

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