The common way for IoT is to set the ESP8266 to server mode and connect to it from the WWW by entering your router static IP address in a browser. My internet provider don't have the option for static IP address. In this project the ESP is set to station mode and it sends several bytes of data to my website every 20 seconds. I can browse at the data from the internet by logging to a page in my website, read analog and digital input and also send a command to switch an output of the Arduino.
I use an Arduino Uno and ESP-01. The code controls the ESP using AT commands only. I used software serial so it's easier to upload the sketch. The code searches the response from the ESP for the command ON/OFF from the website.
I added a suggestion for a PHP script for the website. file a32.php is a blank file which a31.php writes the data to be recorded, page a33.php is for the user to read the data from the ESP and to send command to the Arduino.
In the code enter your SSID and PASSWORD of your router. Also change the name of my website to yours.
You can use my website to test your setup. http://moty22.co.uk/a33.php
I use an Arduino Uno and ESP-01. The code controls the ESP using AT commands only. I used software serial so it's easier to upload the sketch. The code searches the response from the ESP for the command ON/OFF from the website.
I added a suggestion for a PHP script for the website. file a32.php is a blank file which a31.php writes the data to be recorded, page a33.php is for the user to read the data from the ESP and to send command to the Arduino.
In the code enter your SSID and PASSWORD of your router. Also change the name of my website to yours.
You can use my website to test your setup. http://moty22.co.uk/a33.php
B4X:
Sub Process_Globals
Public serial1 As Serial
Public wifi As SoftwareSerial
Private astream As AsyncStreams
'Private astream1 As AsyncStreams
Private tmr1 As Timer
Private astream As AsyncStreams
Private bc As ByteConverter
Private ana, in3, out7 As Pin
Private eol() As Byte = Array As Byte(13, 10)
Private q() As Byte = Array As Byte(0x22)
End Sub
Private Sub AppStart
serial1.Initialize(9600)
'astream1.Initialize(serial1.Stream, Null, Null)
wifi.Initialize(9600,6,5)
astream.Initialize(wifi.Stream, "astream_NewData", Null)
tmr1.Initialize("tmr1_Tick", 20000)
tmr1.Enabled = False
Log("AppStart")
ana.Initialize(ana.A0, ana.MODE_INPUT)
in3.Initialize(3, in3.MODE_INPUT_PULLUP)
out7.Initialize(7, out7.MODE_OUTPUT)
astream.Write("AT+RST".GetBytes) 'reset wifi
astream.Write(eol)
Delay(1000)
astream.Write("AT+CWMODE=1".GetBytes) 'station mode
astream.Write(eol)
Delay(1000)
'Connect To AP, ADD YOUR ROUTER SSID And PASSWORD
astream.Write("AT+CWJAP=".GetBytes)
astream.Write(q)
astream.Write("Sagemcom-GPHQR3".GetBytes) 'change to your router SSID
astream.Write(q)
astream.Write(",".GetBytes)
astream.Write(q)
astream.Write("XXXXXX".GetBytes) 'enter your router password
astream.Write(q)
astream.Write(eol)
Delay(5000)
Delay(500)
tmr1.Enabled=True
End Sub
Sub tmr1_Tick
Dim msg(8) As String
Dim sl As Byte
Dim sl1 As String
If in3.DigitalRead Then msg(5)="OFF" Else msg(5)="ON"
msg(0) = "GET /a31.php?v1="
msg(1) = 0
msg(2) = "&v2="
msg(3) = ana.AnalogRead
msg(4) = "&v3="
msg(6) = " HTTP/1.1"
msg(7) = "HOST: moty22.co.uk" 'change To your website address
sl = msg(0).Length+msg(1).Length+msg(2).Length+msg(3).Length+msg(4).Length+msg(5).Length+msg(6).Length+msg(7).Length+6
sl1=sl
web_page
Delay(1000)
astream.Write("AT+CIPSEND=".GetBytes)
astream.Write(sl1.GetBytes)
astream.Write(eol)
Delay(1000)
astream.Write(msg(0).GetBytes)
astream.Write(msg(1).GetBytes)
astream.Write(msg(2).GetBytes)
astream.Write(msg(3).GetBytes)
astream.Write(msg(4).GetBytes)
astream.Write(msg(5).GetBytes)
astream.Write(msg(6).GetBytes) '" HTTP/1.1"
astream.Write(eol)
astream.Write(msg(7).GetBytes) '"HOST: moty22.co.uk"
astream.Write(eol)
astream.Write(eol)
End Sub
Sub web_page
astream.Write("AT+CIPSTART=".GetBytes)
astream.Write(q)
astream.Write("TCP".GetBytes)
astream.Write(q)
astream.Write(",".GetBytes)
astream.Write(q)
astream.Write("moty22.co.uk".GetBytes)
astream.Write(q)
astream.Write(",80")
astream.Write(eol)
End Sub
Sub astream_NewData (Buffer() As Byte)
Dim reply() As Byte
Dim off() As Byte = Array As Byte(0x4F,0x46) 'OF
Dim on() As Byte = Array As Byte(0x4F,0x4E) 'ON
If Buffer.Length > 80 Then
reply=bc.SubString2(Buffer, Buffer.Length - 3, Buffer.Length-1)
If bc.ArrayCompare(reply, off)=0 Then out7.DigitalWrite(False)
If bc.ArrayCompare(reply, on)=0 Then out7.DigitalWrite(True)
End If
End SubAttachments
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