ESP8266 WiFi gateway port for MySensors

Frank Herrmann

Hi, if it possible to show a sketch with an ESP8266 WIFI => MQTT gateway? I figure out, that the received sensor data will automatic publish to my MQTT Server running on my Raspi. Then i can install this pice of wonderfull work in every room from my house :)

hek

I created a simple ESP-MQTT sketch a while ago. I've only done some simple tests using it. Feedback appreciated.

https://github.com/mysensors/Arduino/blob/development/libraries/MySensors/examples/GatewayESP8266MQTTClient/GatewayESP8266MQTTClient.ino

Frank Herrmann

@hek Very nice! the code are magic :) Very nice solution, i'll test this next days.

...
#include <ESP8266WiFi.h>
#include <MySensor.h>

void setup() { 
}

void presentation() {
  // Present locally attached sensors here    
}


void loop() {
  // Send locally attech sensors data here
}

FotoFieber

@hek said:

I created a simple ESP-MQTT sketch a while ago. I've only done some simple tests using it. Feedback appreciated.

https://github.com/mysensors/Arduino/blob/development/libraries/MySensors/examples/GatewayESP8266MQTTClient/GatewayESP8266MQTTClient.ino

Testing the above sket from the development branch with a new sensbender micro I get:
mygateway/255/255/3/0/3 (null) on MQTT

This is an id request. I answer this request with
mosquitto_pub -h ds -t "mygateway/255/255/3/0/4" -m 8
which should set the ID 8 on the sensbender micro in my undestanding. I can see the message in the serial terminal on the ESP-8266 but the message doesn't arrive at the sensbender micro.

Is my message to set the id correct?

hek

Yes, the response message looks ok. But I must confess that I haven't verified the MQTT gateway much yet. Probably something I've missed (=bug).

Do you have the possibility to to see where the message ends up or being thrown away (debug-print-debugging is awesome, yes I know...) in the MQTT gateway?

Or wait a few days until I've had time to look at it.

FotoFieber

@hek said:

...
Do you have the possibility to to see where the message ends up or being thrown away (debug-print-debugging is awesome, yes I know...) in the MQTT gateway?
...
There seems to be a bug in incomingMQTT:
replace
for (str = strtok_r(topic, "/", &p); str && i < 5;
with
for (str = strtok_r(topic, "/", &p); str && i <= 5;

or it will never send a message.

There seems to be another problem:
0;0;3;0;9;send: 0-0-0-255 s=255,c=3,t=4,pt=0,l=1,sg=0,st=fail:8

Why is the payload in st=fail?

The messages sent to MQTT seem to make a merry go round and come back.... :)

hek

@FotoFieber said:

Why is the payload in st=fail?

The payload (8) seems correct. Gateway just never received any ack from node... which is fine for broadcast messages (to node 255) such as this.

The messages sent to MQTT seem to make a merry go round and come back....

Ok, like you suspected earlier? So we need to subscribe to something else than we publish to then...

FotoFieber

@hek
Loaded the ethernet ESP-8266 gateway and entered with telnet:
255;255;3;0;4;8

It is working as it should. Now I have assigned the id 8.

Tried to solve the merry go round but it didn't help. Now I let the stage to the pros.. :)

Fabien

Do you think we can use this board with MySensors (with NRF24 or RFM69) ?
https://github.com/hallard/NodeMCU-Gateway

Mike Cayouette

Hi,

If I want to use the GatewayESP8266MQTTClient sketch located in the development branch do I also need to use the mysensors libraries in that branch?

Thank you,

Mike

hek

@Mike-Cayouette

Yes

vickey

@hek Thanks for the code. I have few questions in my mind. Firstly do I just have to upload this ESP8266MQTTClient.ino sketch on esp8266 12-E model? or does it needs anything to add in the sketch except SSID and password? I want to use ESP-8266-E and NRF24L01+ as gateway for openhab. If it is possible then, do I have to adopt the same procedure for configuring openhab as ethernet gateway? Secondly, Can I make two gateways using this sketch, is this possible? As I want to add sensors which are 500 meters away at my farmhouse.

joshmosh

This is a bit off topic, but hopefully not too off ;-)
What about a port of the MySensors library /API to ESP8266 ? Instead of two "boards" (Arduino nano plus nRF24L01+) only one would be required. For simple sensors an ESP-01 would be sufficient - about the size of a nRF24, but with much more muscle than an Arduino. Of course, running off a battery probably would not work because of the high power consumption of the ESP.

Or am I asking for something which is already possible ?

Josh

hek

@vickey said:

@hek Thanks for the code. I have few questions in my mind. Firstly do I just have to upload this ESP8266MQTTClient.ino sketch on esp8266 12-E model?

Yes

or does it needs anything to add in the sketch except SSID and password?

Entering SSID/PW should be enough.

I want to use ESP-8266-E and NRF24L01+ as gateway for openhab. If it is possible then, do I have to adopt the same procedure for configuring openhab as ethernet gateway?

I'm not an expert on openhab.. so I'll let someone else answer this one. But the ESP variant behaves exactly like the W5100 version.

Secondly, Can I make two gateways using this sketch, is this possible? As I want to add sensors which are 500 meters away at my farmhouse.

If openhab supports multiple gateways, sure. But you might wanna run sensor networks on different frequencies or changing MY_RF24_BASE_RADIO_ID.

@joshmosh

Or am I asking for something which is already possible ?

Yes, the code runs directly on the ESP8266.

joshmosh

@hek
that's good news, thank you ! Now the most expensive part will be the power supply ;-)

Cheers
Josh

vickey

@hek I have installed GatewayESP8266MQTTClient sketch on my ESP-8266 12E.
Here is sketch I am using

#include <EEPROM.h>
#include <SPI.h>

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Use a bit lower baudrate for serial prints on ESP8266 than default in MyConfig.h
#define MY_BAUD_RATE 9600

// Enables and select radio type (if attached)
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

#define MY_GATEWAY_MQTT_CLIENT

// Set this nodes topic prefix
#define MY_MQTT_TOPIC_PREFIX "mygateway"

// Set MQTT client id
#define MY_MQTT_CLIENT_ID "mysensors-1"

// Enable these if your MQTT broker requires usenrame/password
//#define MY_MQTT_USER "admin"
//#define MY_MQTT_PASSWORD "MyPassword"

// Set WIFI SSID and password
#define MY_ESP8266_SSID "Ahmed"
#define MY_ESP8266_PASSWORD "MyPassword"

// Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP)
#define MY_IP_ADDRESS 192,168,0,31

// If using static ip you need to define Gateway and Subnet address as well
#define MY_IP_GATEWAY_ADDRESS 192,168,0,1
#define MY_IP_SUBNET_ADDRESS 255,255,255,0


// MQTT broker ip address.  
#define MY_CONTROLLER_IP_ADDRESS 192, 168, 0, 30

// The MQTT broker port to to open 
#define MY_PORT 1883      

 /*
// Flash leds on rx/tx/err
#define MY_LEDS_BLINKING_FEATURE
// Set blinking period
#define MY_DEFAULT_LED_BLINK_PERIOD 300

// Enable inclusion mode
#define MY_INCLUSION_MODE_FEATURE
// Enable Inclusion mode button on gateway
#define MY_INCLUSION_BUTTON_FEATURE
// Set inclusion mode duration (in seconds)
#define MY_INCLUSION_MODE_DURATION 60 
// Digital pin used for inclusion mode button
#define MY_INCLUSION_MODE_BUTTON_PIN  3 

#define MY_DEFAULT_ERR_LED_PIN 16  // Error led pin
#define MY_DEFAULT_RX_LED_PIN  16  // Receive led pin
#define MY_DEFAULT_TX_LED_PIN  16  // the PCB, on board LED
*/

#include <ESP8266WiFi.h>
#include <MySensor.h>

void setup() { 
}

void presentation() {
  // Present locally attached sensors here    
}


void loop() {
  // Send locally attech sensors data here
}

Here is the debug

0;0;3;0;9;Starting...
scandone
f 0, ....scandone
state: 0 -> 2 (b0)
.state: 2 -> 3 (0)
state: 3 -> 5 (10)
add 0
aid 1
cnt 

connected with Ahmed, channel 1
ip:192.168.0.31,mask:255.255.255.0,gw:192.168.0.1
.IP: 192.168.0.31
0;0;3;0;9;gateway started, id=0, parent=0, distance=0
0;0;3;0;9;Attempting MQTT connection...

And it keeps attempinng for MQTT connection.

I have installed Domoticz on my RPi and added a hardware Mysensors Gateway with LAN interface with remote address i.e. 192.168.0.31 in my case and port 1883. Here is Domoticz log

2015-10-17 12:50:26.675  Hardware Monitor: Fetching data (System sensors)
2015-10-17 12:50:31.590  Error: MySensors: Error: Connection refused
2015-10-17 12:50:31.590  Error: TCP: Error: Connection refused

I don't have mosquitto installed in my Rpi.

May someone suggest me any solution.

joshmosh

@hek
Good morning. I had wired up my nodemcu a nRF24L01+, loaded the gateway sketch and bingo ! Zero problems, works like charm. Thanks a lot !!!

I am using Domoticz as controller, with a serial USB gateway to connect my various sensors. In the serial console of the ESP8266 gateway I see that the messages of my sensors show up, but since I have not yet announced the gateway to Domoticz, there seems to be no interference. If I connect the ESP8266 gateway to a controller (in my case Domoticz), I guess that it will be required that the nodes need to choose the respective gateway (by using the parentNodeId) with which they like to communicate ? Currently, I am using parentNodeId = AUTO in all my nodes.
I will do some testing to get an idea of the reach of my WiFi compared to the reach of my serial USB gateway (I have a nRF24L01+ with external antanna and booster in my gateway, so I am able to "see" a portable node even outside my house and 50 m away.

Again, thank you for this very useful extension of MySensors. I think I have not yet an estimate of the full potential of it

Cheers
Josh

gloob

Hello,

I also tried to build a WiFi gateway today.
I get the following serial output when starting the gateway:

ESP8266 MySensors Gateway
Connecting to *************
...Connected!
IP: 192.168.1.218
0;0;3;0;9;gateway started, id=0, parent=0, distance=0

Does this mean that everything is correct and I can integrate it into my FHEM solution?
Currently I'm working with a serial gatway. Do I have to modify something in my sensors when I switch to the new gateway?

Yveaux

@gloob said:

I get the following serial output when starting the gateway:

Looking good! Congrats!

I have no experience using FHEM, but you should be able to use the WiFi gateway just like the regular ethernet gateway (as seen from FHEM).
So look around on this forum for any posts regarding usage of FHEM & ethernet gateway and you should be good.

Yveaux

@joshmosh You cannot have multiple gateways in a single MySensors network. The node-ID of the gateway is always hardcoded to 0.
If you want to run multiple networks, each should have a unique RF24_CHANNEL & RF24_BASE_RADIO_ID combination. For best results make sure to have a separate RF24_CHANNEL for each network, and don't use directly adjacent channels.

ESP8266 WiFi gateway port for MySensors

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