💬 Serial Protocol - 2.x

tbowmo

the protocol spec is still in very early draft.. That said, I would really like to keep things as simple as possible on the node side, in order to conserve flash / ram space as much as possible..

But let's see, it might be a year before we have something ready.. And it will probably be mysensors 3.0 that will get the new protocol, as it will probably break compatibility in every way possible :D

Zeph

@tbowmo I agree with keeping things simple to implement, particularly on the Node & Gateway side. And it doesn't hurt that this would likely also keep things simpler to implement on the Controller side (ie: simpler plug-ins/adapters/drivers to write, which is a positive even when resources are not so tight.).

We might be able to nevertheless implement some kind of multi-value packet concept tho. I added a comment to the 3.0 doc about a simple and low overhead way to allow homogeneous arrays. That might or might not be worthwhile.

Robosensors's use case would involve some kind of tagged sub-unit approach, with multiple id/value pairs, yet another concept worth considering.

martinhjelmare

Regarding V_POSITION and using semi-colons inside the payload, that will in my view break the API message structure. At least home assistant/pymysensors will not work with this. I'll build for and recommend users of that controller to use comma instead of semi-colon to split info inside the payload for V_POSITION.

RWoerz

This is just what I've been looking for. I do however have a suggestion. I'm building a solar heater (water) for my shop and need to keep track of at least 3 temps (solar panel, storage tank, and inside shop), 1 water pressure and 1 water flow meter (for solar panel Pump) . There doesn't seem to be V_ or S_ variables for direct water pressure or flow. Would you please add something for them.

RWoerz

Sorry I found V_FLOW 34 Flow of water (in meter) S_WATER. What exactly does "in meter" mean?

musthafa

Can we have S_SWITCH for Wall switches, door bell switches etc ?

mfalkvidd

@musthafa is there a reason S_BINARY can't be used for those cases?

musthafa

@mfalkvidd said:

@musthafa is there a reason S_BINARY can't be used for those cases?

Thanks. Didn't look at it. Solved my problem.

mfalkvidd

@musthafa great! Thanks for reporting back.

gvorster

Where can I find the structure for the payload of the internal command I_LOG_MESSAGE ? e.g. payload "TSF:MSG:SEND,211-0-220-220,s=211,c=1,t=23,pt=2,l=2,sg=0,ft=0,st=OK:69"
I know I'm sending a value from node 211 to node 220 with the value 69. What does c=1, t=23, pt=2, l=2, sg=0,ft=0 mean?

mfalkvidd

@gvorster see https://forum.mysensors.org/post/43373

gvorster

@mfalkvidd said in 💬 Serial Protocol - 2.x:

@gvorster see https://forum.mysensors.org/post/43373

Thanks, got it now.

siod

how can I handle sendheartbeat() messages in my controller? What payload will be sent? 1 or 0, True or False...?

ps I´m using openhab

gvorster

@siod said in 💬 Serial Protocol - 2.x:

how can I handle sendheartbeat() messages in my controller? What payload will be sent? 1 or 0, True or False...?

ps I´m using openhab

I just tested this using a Serial gateway.

Sending sendHeartbeat() from node displays this on my Serial gateway:

...
214;255;3;0;22;73
214;255;3;0;22;108
214;255;3;0;22;143
...

3=internal message
0=nack
22=I_HEARTBEAT_RESPONSE

In MyTransport.cpp I found

uint32_t transportGetHeartbeat(void)
{
	return transportTimeInState();
}

---

uint32_t transportTimeInState(void)
{
	return hwMillis() - _transportSM.stateEnter;
}

So the payload is some elapsed time in milliseconds.

siod

@gvorster Thank you for explanation!

One more thing: I wanted to implement a sendHeartbeat() into a Repeater node (which should never sleep!), where should I put this function and how? When putting it just into the loop it is of course spamming my gateway with heartbeat messages...Is it possible anyway?

gvorster

@siod said in 💬 Serial Protocol - 2.x:

@gvorster Thank you for explanation!

One more thing: I wanted to implement a sendHeartbeat() into a Repeater node (which should never sleep!), where should I put this function and how? When putting it just into the loop it is of course spamming my gateway with heartbeat messages...Is it possible anyway?

There are many examples code how to do this. One Timer library I use myself is this https://playground.arduino.cc/Code/Timer

e.g. for a repeater you could use this:

#include "Timer.h"

Timer t;

void setup() {
    t.every(60000, sendImAlive);
}

void loop() {
    t.update();
}

void sendImAlive() {
    sendHeartbeat();
}

shabba

What is the best for a push button? I have a button to open a lock. The button cannot lock the lock however. So binary is not really a proper option?

hek

ATM scene controller is probably the best option.

https://github.com/mysensors/MySensors/issues/724

dmurphy

S_SPRINKLER is defined as having V_STATUS and V_TRIPPED - no V_ARMED....but V_ARMED says it is in S_SPRINKLER...Which way should I code this up for my controller??

jjk

Hi there,
do you know that, you've built a node like a 100 times and I think it's all routine and then something that completely bluffs you? I happened to me with a simple Temp/Hum node (DHT22) that keeps sending me messages that I can't seem to figure out: 43;255;3;0;33;300000 and 43;255;3;0;32;500 - They seem to show up in the frequency that other nodes send a heartbeat signal, but no heartbeat is sent from this node. The regular DHT22 datapoints are sent as normal. Anyone knows what this means?

💬 Serial Protocol - 2.x

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