Max bytes allowed to transfer via publishdata function

[Roman Dorogan']

Good day!

I used the example of publishdata function from Souliss wiki:

// Sender
uint8_t mypayload[10];

if(...) publishdata(Alarm, mypayload, 10);

// Receiver
uint8_t mypayload_len;
uint8_t mypayload[10];
if(subscribedata(Alarm, mypayload, &mypayload_len))
{
   
}

When I used "mypayload" array dimension equal or less then 9 - it worked perfectly. When the dimension was 10 or more - nothing worked.

The network architecture is very simple, only 1 node based on Arduino Uno and 1 gateway based on ESP8266, connected by TX-RX pins.

All other Souliss functions work correctly. Is this a principal limitation of publishdata function or it can be improved?

Thank you in advance!

[Di Maio, Dario]

Hi Roman,

the publish use a small queue of the RAM and that's why you cannot send more data.

The size is defined here
https://github.com/souliss/souliss/blob/friariello/conf/frame/MaCacoCfg.h#L268

Here is defined the maximum size while sending a publish
https://github.com/souliss/souliss/blob/friariello/frame/MaCaco/MaCaco.cpp#L821

You should be able to send larger frames increasing that constant value, but anyhow you never have to build a frame larger that the MaCaco_PAYLOAD.

Regards,
Dario.

From Mobile.

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[Roman Dorogan']

Now it works! :) Dario, thank you very much!

[NORBERT JÓNA]

Hello Dario,

Would you mind fixing this in WIKI ("You can send up to MaCaco_PAYLOAD bytes." - in peer2peer section) ? I also faced with this problem and the current wording is a bit confusing. I assumed that the max length is MaCaco_PAYLOAD (41bytes)

But the max data length is " < MaCaco_QUEUELEN-5 " and  the " MaCaco_QUEUELEN = 15" by default. So the max leght is just 9 byte.

The "MaCaco_PAYLOAD" defined in the "souliss\conf\frame\MaCacoCfg.h " but not used.

Thank you in advance

Best regards

JN

[Di Maio, Dario]

Done, thanks.

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[NORBERT JÓNA]

I also thanks

JN