ESP8266 WiFi gateway port for MySensors

hek

@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.

FotoFieber

Playing with AES signing and encryption I enabled verbose debug.

#define MY_DEBUG_VERBOSE

The sketch crashes with this setting but seems to work fine without verbose debug.

Is this a problem of my setup or a problem in the code?

The log pf the serial terminal:

write_register(0x04,0x5F)
write_register(0x06,0x27)
write_register(0x06,0x07)
write_register(0x00,0x0C)
write_register(0x07,0x70)
write_register(0x05,0x4C)
write_register(0x00,0x0E)
write_register(0x00,0x0E)
STATUS		0x0E RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1	0x0E0E0E0E0E 0303030303 
RX_ADDR_P2-5	0xC3 C4 C5 C6 
TX_ADDR		0x0E0E0E0E0E 
RX_PW_P0-6	0x00 00 00 00 00 00 
EN_AA		0x3F 
EN_RXADDR	0x03 
RF_CH		0x4C 
RF_SETUP	0x07 
CONFIG		0x0E 
DYNPD/FEATURE	0x00 00 
Data Rate	1MBPS
Model		nRF24L01+
CRC Length	16 bits
PA Power	PA_MAX
write_register(0x01,0x3F)
write_register(0x01,0x3B)
write_register(0x1D,0x06)
FEATURE=0x06
write_register(0x1C,0x03)
write_regis

Yveaux

@FotoFieber said:

Is this a problem of my setup or a problem in the code?

I'll opt for the first, but lets see:

What ESP hardware are you using?
Which Arduino/ESP8266 port/MySensors version are you using?
Did you define both DEBUG and MY_DEBUG_VERBOSE?
What did you do to 'Play with AES signing and encryption' ?
AES stuff is untested for ESP8266, however, you don't seen to get that far as it crashes during startup.
My startup log (see here ) shows what it shoes during startup with DEBUG and MY_DEBUG_VERBOSE enabled.

FotoFieber

@Yveaux

ESP12E
Development Version
Defined both DEBUG AND VERBOSE
Playing with AES:

#define MY_RF24_CHANNEL  13
#define MY_RF24_BASE_RADIO_ID ((uint64_t)0xF8A813FC09CL)

#define MY_RF24_ENABLE_ENCRYPTION
#define MY_RF24_ENCRYPTKEY  secret....

#define MY_SIGNING_SOFT // Software signing enabled

#define MY_SIGNING_SOFT_SERIAL secret....
// Key to use for HMAC calculation in soft signing (32 bytes)

#define MY_SIGNING_SOFT_HMAC_KEY secret

It seems to work perfect without the verbose debug.

I will test now without AES. My gut tells me, I should look inside the AES stuff.

joshmosh

@Yveaux said:

@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.

@Yveaux
Thank you for this piece of information - I was not aware of this fact.
My idea was to reduce cost and parts count for sensors by using ESPs instead of nRF plus Arduino. Since I have Domoticz as controller, there is pehaps no need for an additional gateway, because Domoticz can handle TCP-attached sensors. Of course this would require to use WiFi instead of nRF24 as underlying transport for MySensors. My interpretation of some of hek's contributions is that he is working on it for realisation in version 1.6.

FotoFieber

@Yveaux
Downloaded the development branch again and used the sketch included as example. The sketch is hanging too. My gut was wrong, AES is not the problem.

vickey

Hi.
I am having an issue with my ESP8266 gateway. I have tried all versions of mysensors including developmental versions, but my esp8266 does not show any serial debug, nor it gets connected to my router. I also enabled debug in configuration file. When I install AT firmware, it replies to AT command, it also works with nodemcu firmware, but it does not respond with Arduino firmware. May someone help me?

Anduril

Finally I got my NodeMCU and tried the WiFi gateway too. But I get the following messages (with Serial.setDebugOutput(true);):

ESP8266 MySensors Gateway
Connecting to WLAN
scandone
f 0, ....scandone
.add 0
aid 1
pm open phy_2,type:2 0 0
cnt 
..................rm 0
pm close 7 0 0/9299504
..reconnect
f -240, ....scandone
no WLAN found, reconnect after 1s
.reconnect
f 0, ....scandone
.add 0
aid 1
pm open phy_2,type:2 0 0
cnt 
................rm 0
pm close 7 0 0/8288631
..reconnect
f -240, ....scandone
no WLAN found, reconnect after 1s
.reconnect
f 0, ....scandone
.add 0
aid 1
pm open phy_2,type:2 0 0
cnt 
................rm 0
pm close 7 0 0/8124923
..reconnect

Additionally I tried to use

  IPAddress ip(192, 168, 38, 18);  /* Set to whatever IP address you'd like the gateway to have */
  WiFi.config(ip);

to avoid DHCP, but that gives error during compiling:

no matching function for call to 'ESP8266WiFiClass::config(IPAddress&)'

Any hints how to solve?

Thanks

Edit:
to find the problem I tested to connect the ESP to the wifi-hotspot of my smartphone... worked. Is it maybe a problem if the password contain special characters which behave strange during compiling?

Yveaux

@Anduril said:

no WLAN found, reconnect after 1s

That's a clear indication the ESP cannot connect to your WiFi accesspoint.
Is the SSID matching your accesspoint ('WLAN')?
Is the encryption supported by the ESP (see e.g. https://nurdspace.nl/ESP8266#Features -- not sure if it is accurate)
Weird characters in the password could be problematic (and of course the password is case-sensitive).

Changing between DHCP/Fixed IP won't make a difference here, as the ESP doesn't even connect. IP configuration starts once connected.

Anduril

@Yveaux
SSID is 'WLAN' (all capital). Encryption is WPA2 which should be supported. The password contains '|' (don't know the name, vertical line) and 'ß' (german character). I use them among other more common ones to raise the complexity of the encryption. As I am using a bunch of wifi devices I don't want to go around and change passwords for all if not absolutely necessary. Is there a way to specify these 'weird characters' e.g. by ASCII codes or anything else?

Changing the IP was not to solve this problem but for future use, as my DHCP is not very good. Can you tell me how to fix IP else?

Yveaux

@Anduril try to print your password to the serial console and see if it matches the password you entered in the sketch.

Anduril

good idea @Yveaux, seems that 'ß' is the problem. serial.print shows ÃŸ at that position. Do you know how to avoid that?

Yveaux

@Anduril probably Unicode problem of the editor. I assume you use the Arduino editor? Try a simple editor like notepad to type the problematic character, or directly type it in windows by setting your keyboard in numpad mode and type it's ascii code: alt+225

Anduril

@Yveaux tried with a nano to print out "ß" to serial, no problems. After that I tried that sketch on ESP:

void setup() {
  Serial.begin(115200);
  const char *pass = "ß1ß";
  Serial.println(" "); //to break line after rubbish at init
  Serial.println(pass);
}

[not readable/copyable stuff]
ß1ß

So in general it should be no problem compiling the char 'ß' even on ESP.. Also in the ESPGateway sketch I don't see anything that is changing the *pass, but maybe you know what is going on with this string in more detail.

edit: it seems to happen even before void setup in the gw sketch. I uncommented everything in setup, loop and output, but still get the distorted serial print of pass.

ESP8266 WiFi gateway port for MySensors

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