Functionality, how to use

[hakha4]

I have a network with some sensors and a couple of relay controllers and everything works ok most of the time. Trying to get a better understanding how things work under the hood and I have a few questions that someone maybe have the answers to:

What is the use of ping ? (I know what ping is in general!) . How to catch responses ?

What is the purpuse and how to use mqtt command fdrs/status ?

There is a ota.h file but how to implement ? Only on GW ? or can it be used in controller/sensors ? (would be nice for units hard to reach physically)

Best Regards Håkan

[timmbogner]

Hi Håkan,

Pinging works as follows... It may possibly change soon, because the functionality is being worked on in the timekeeping pull request that's in development:

  int p = 0;
  p = pingFDRS(300);
  DBG(p);

First we initialize p, which will hold our ping time. Next we run pingFDRS(300) and set p to the result. You can then use that value for whatever you may need it for. The timeout (300ms) is how long the node will wait for a reply before moving on.

fdrs/status is currently only used once, to display a "hello, world!" message. In the future I plan to use this topic to post DBG() messages from the gateway over MQTT. I will get to it eventually!

OTA should work on gateways that use WiFi or ethernet. I have an idea in mind that could maybe allow any FDRS device to be put into WiFi mode for OTA, but that's another thing on the to-do list!

[hakha4]

Thank's !