ESP8266 Community Forum

- Thu Dec 08, 2016 3:48 pm #59252 Thank you, Mmiscool!

I was looking for the keyword "Interrupt" in the doku, never thought to look for "Branch" ...
But I suppose, you meant UdpBranch, not SerialBranch, right?

Btw.: The new Terminal is really helpfull! Thank you so much, for your increddible work!

- Thu Dec 08, 2016 4:25 pm #59257 I will say that there might be a problem with the let commnd.

You will probably be better off just not using the let command at all.

X = 5

Not

Let x =5

Serial terminal in the chrome browser see https://serialTerminal.com

http://esp8266basic.com
A BASIC interpreter for your ESP

Working now on Autodrop3d. A 3d printer with automatic part ejection system. https://autodrop3d.com

- Fri Feb 17, 2017 2:23 pm #62711

Here is some simple udp code to toggle a relay. Both of the esps set up udp servers. The master sends the slave a 0 or a 1 to toggle the pin state, and the slave sends the status of the pin back to the master.
You can toggle the pin by connecting to the master website and clicking the button. You would have to add some handshaking or something if you want to add more slaves. This works very reliably though for me so far with very little lag on v3 a39.

master code:

Code: Select allmemclear
wifiapsta
udpbegin 8081
let data = 0
let stat = "OFF"
wprint "Status = "
wprint htmlvar(stat)
wprint "<br>"
button "Toggle Relay", [doit]

timer 500, [read]

[doit]
if data = 1 then let data = 0 else let data = 1
udpwrite "192.168.0.109", 8082, str(data)
wait


[read]
let stat = udpread()
wait


slave code:

Code: Select allmemclear
udpbegin 8082
let stat = "OFF"

timer 500,[doit]
wait

[doit]
let rec = val(udpread())
io(po,2,rec)
if rec = 1 then let stat = "ON" else let stat = "OFF"
udpwrite "192.168.0.102", 8081, stat
wait


I can't operate the button via Internet. I have set up port forwarding on the router and I access remotely the page, but nothing happens when I click. In local network all works. why ?

- Sun Feb 19, 2017 10:47 am #62768 you have to port forward 2 ports.
The http port and the web sockets port.

Serial terminal in the chrome browser see https://serialTerminal.com

http://esp8266basic.com
A BASIC interpreter for your ESP

Working now on Autodrop3d. A 3d printer with automatic part ejection system. https://autodrop3d.com