ESP8266 WiFi gateway port for MySensors

[Yveaux]

@Andy-Pep said:

i like the way it reboots when connection is lost

I cannot replay this situation:

• Tried disabling my WiFI network on the router. Gateway keeps running and restores connection correctly when WiFI is enabled again. No reboot observed.
• Tried disconnecting telnet session. No reboot.

What did you do to cause a reboot?

[olof]

Yes great work is right. thank you

[Fabien]

Ok I will test it in few days.
Do you think is it possible to have an ESP gateway with RF24 and RF69 ? ESP have more memroy (ESP12E)

[Yveaux]

@Fabien connecting two radios should work, although MySensors does not natively support it.

[gonzalonal]

Hi, let me ask a silly question just to confirm if I understand how this would work.

This gateway would receive Nodes data throght NRF or RF69 and then send it to controller via wifi? The way back would be, receiving controller commands/data via wifi and get to the nodes through NRF or RF69.

Is this right?

Thanks!

[Yveaux]

@gonzalonal said:

Hi, let me ask a silly question just to confirm if I understand how this would work.

This gateway would receive Nodes data throght NRF or RF69 and then send it to controller via wifi? The way back would be, receiving controller commands/data via wifi and get to the nodes through NRF or RF69.

Is this right?

Thanks!

Correct!

[Fabien]

Doesn't work here with stage version of ESP8266-Arduino (can't install stable version, I have checksum error). I use this module http://www.electrodragon.com/product/nodemcu-lua-amica-r2-esp8266-wifi-board/
Can't load at 9600 bauds (how can you change uplaod baud rate ?)
Crash on init and reboot :

ESP8266 MySensors Gateway
Connecting to Livebox-577E
...Connected!
IP: 192.168.1.23

Exception (3):
epc1=0x40206955 epc2=0x00000000 epc3=0x00000000 excvaddr=0x40244cd2 depc=0x00000000

ctx: cont 
sp: 3ffea540 end: 3ffea780 offset: 01a0

>>>stack>>>
3ffea6e0:  a8e1fcff 000000a8 3ffe9294 40206b7c  
3ffea6f0:  00000001 3ffe9290 3ffe9294 402036d0  
3ffea700:  00000000 00000000 3ffe91fc 40204910  
3ffea710:  0000007f 3ffea7ac 40201cac 3ffe9760  
3ffea720:  40202320 00000001 00000000 40201d4f  
3ffea730:  1701a8c0 00ffffff 0101a8c0 3ffea7ac  
3ffea740:  3ffe873d 3ffe9474 3ffe972c 4020266f  
3ffea750:  3ffe8c08 1701a8c0 00000000 00000000  
3ffea760:  3fffdc20 00000000 3ffea7a4 40201d1f  
3ffea770:  00000000 00000000 3ffe9760 40100374  
<<<stack<<<

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 1264, room 16 
tail 0
chksum 0x42
csum 0x42
~ld

[Yveaux]

@Fabien said:

Doesn't work here with stage version of ESP8266-Arduino (can't install stable version, I have checksum error).

What do you mean by stage version and checksum error exactly?
Tonight @hek merged the gateway code for ESP to master 1.5. Could you try with that version?

I use this module http://www.electrodragon.com/product/nodemcu-lua-amica-r2-esp8266-wifi-board/

Seems identical to the one I ordered. Until I receive it I cannot replay your exact case. I did test & develop using separate ESP12 module, while your board has ESP12E, I guess. Can you confirm this?

Can't load at 9600 bauds (how can you change uplaod baud rate ?)

Don't bother about the download speed. I only suggest to start at low speed as it seems to download more reliably. Did download finish without errors?

Crash on init and reboot :

ESP8266 MySensors Gateway
Connecting to Livebox-577E
...Connected!
IP: 192.168.1.23

Exception (3):
epc1=0x40206955 epc2=0x00000000 epc3=0x00000000 excvaddr=0x40244cd2 depc=0x00000000

ctx: cont 
sp: 3ffea540 end: 3ffea780 offset: 01a0

>>>stack>>>
3ffea6e0:  a8e1fcff 000000a8 3ffe9294 40206b7c  
3ffea6f0:  00000001 3ffe9290 3ffe9294 402036d0  
3ffea700:  00000000 00000000 3ffe91fc 40204910  
3ffea710:  0000007f 3ffea7ac 40201cac 3ffe9760  
3ffea720:  40202320 00000001 00000000 40201d4f  
3ffea730:  1701a8c0 00ffffff 0101a8c0 3ffea7ac  
3ffea740:  3ffe873d 3ffe9474 3ffe972c 4020266f  
3ffea750:  3ffe8c08 1701a8c0 00000000 00000000  
3ffea760:  3fffdc20 00000000 3ffea7a4 40201d1f  
3ffea770:  00000000 00000000 3ffe9760 40100374  
<<<stack<<<

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 1264, room 16 
tail 0
chksum 0x42
csum 0x42
~ld

Apparently you did connect to WiFi correctly and got an IP address.
Debugging this module is hard; I add serial print statements at strategic places to drill down to the cause of such access violations.
It would really help if you can get some more info on where it crashes by adding these print statements.
Otherwise you'll probably have to wait until we get to a common hardware setup.

[Yveaux]

@Fabien My bad, mea culpa :facepunch:
Have been so busy getting the stuff to compile for all different platforms that this bug sneaked in... That's why you should always verify if your code still works, after building it ;-)

Anyway, see this pull request for the fix.
Once it is merged to master, could you please try again?

I'm also experiencing some random disconnects, so expect a new update soon...

[hek]

Opps :blush:

Started Jenkins build of the PR.

[Yveaux]

@hek You probably got so accustomed to building it :tired_face:

[hek]

The build server must earn its cost :)

[Yveaux]

I prepared a new pull request which deals with some occasional watchdog timeouts (causing a reset) when clients connect or disconnect.
It also allows multiple clients to connect simultaneously to the ESP gateway.
Please update to this version once it's integrated in master.

[Fabien]

With pull #186, it works better ...
Connection ok, can see messages form sensors on the serial line.
Connecting with MYSController, got "Gateway startup complete." on the serial link but nothing on MYSController. Pinging works ...
Perhaps somme problems with ESP and Livebox ... I have this problem before with some sketch and I must made an AP on my Odroid ... I will try later.

[hek]

MySensors/Arduino#186 Merged

[DrJeff]

Can this be built with esp8266-03? I got a couple of those sitting here waiting to get used? It looks like I can swap Pin 4 for Pin 16 (or 18 in this picture) Is there something I'm missing?

[Yveaux]

@DrJeff GPIO16 is a strange IO pin on some modules as it might be triggering the nReset line. Should work for this ESP-03 though.
Make sure to use the latest MySensors library and please post your experiences here so we can bundle them.

[Yveaux]

NodeMcu boards are in!
Fast shipment & very well packed:

I can upload at 921600 baud (!) without manual reset/bootload from Arduino IDE and LED blink sketch is working.
Next is connecting nRF24 and see if ESP gateway is running without problems.

I'll keep you informed!

[Yveaux]

Works like a charm!

This is the NodeMcu board used (Called NodeMcu Devkit v1.0 by the NodeMcu Team. Schematics and layout can be found here)

Radio connection (using MySensors default coloring scheme. IRQ is unused and can be left unconnected):

The standard ESP8266 Gateway sketch can be used without modification (except for SSID & password).

• Install CP2102 drivers from here.
• Connect NodeMCU board.
• Load the Esp8266Gateway.ino sketch (See Compiling the gateway in the top post)
• Download the sketch. This NodeMcu board can be flashed automaticlly and doesn't need botload/reset buttons to be pressed.
• Open the serial console and watch the board connecting to yout WiFi network.
• Note the IP address assigned to it.
• Now any application capable of communicating with the regular MySensors Ethernet gateway should be able to communicate with the ESP Gateway.
• Enjoy!

---

Optional step: If you want to use the onboard red LED (GPIO16) to blink when radio activity/error takes place, then change the following:

MyConfig.h

#define WITH_LEDS_BLINKING

Esp8266Gateway.ino

#ifdef WITH_LEDS_BLINKING
#define RADIO_ERROR_LED_PIN 16  // Error led pin
#define RADIO_RX_LED_PIN    16  // Receive led pin
#define RADIO_TX_LED_PIN    16  // the PCB, on board LED
#endif

[hek]

Thanks @Yveaux,

I'll probably copy (most) of the previous post to the main site.