Hardware components | ||||||
| × | 1 | ||||
 |
| × | 1 | |||
 |
| × | 1 | |||
| × | 1 | ||||
 |
| × | 6 | |||
 |
| × | 1 | |||
| × | 1 | ||||
I though to create the IOT application which controls the Home device and POST/GET data from cloud.
My Kid loves music, so I integrated DF MP3 player with ESSP8266 so that I can access the mp3 player functionality outside the network.
We can use this concepts to implement this in restaurants or any place where more waiting time is required and ask customer to play their favorite songs ..
Code
C/C++You can remove the code related to Backendless. Since i am using Backendless.com to store my wifi public IP to access outside of Home.. You can use noip.com if you want as alternate.
Change below code to add your WIFI name and password
const char* ssid = "U&ME";
const char* password = "XXXX";
Change the device IP Address based on your need
IPAddress ip(192, 168, 1, 100);
Change below code to add your WIFI name and password
const char* ssid = "U&ME";
const char* password = "XXXX";
Change the device IP Address based on your need
IPAddress ip(192, 168, 1, 100);
#include <ESP8266WiFi.h>
#include <SoftwareSerial.h>
# define Start_Byte 0x7E
# define Version_Byte 0xFF
# define Command_Length 0x06
# define End_Byte 0xEF
# define Acknowledge 0x00 //Returns info with command 0x41 [0x01: info, 0x00: no info]
#define NEXT 1;
#define PREV 2;
#define STOP 3;
#define PLAY 4;
#define VOLUMNUP 5;
#define VOLUMNDOWN 6;
const char* ssid = "U&ME";
const char* password = "XXXX";
String publicIP = "";
String cloudURI = "/XXX/XXX/data/MYIP_ADDR";
IPAddress ip(192, 168, 1, 100); // Desired IP Address
IPAddress gateway(192, 168, 1, 1); // set gateway to match your network
WiFiServer server(80);
WiFiClient publicIpClient;
WiFiClient cloudClient;
char IpaddressServer[] = "checkip.dyndns.org";
char cloudServer[] = "api.backendless.com";
SoftwareSerial mySerial(D8, D7); // RX and TX
// D8 to TX PIN in Player
// D7 to RX PIN in Player
int volumn = 20;
void setup() {
//Serial.begin(115200);
//delay(10);
//Serial.println("Starting");
IPAddress subnet(255, 255, 255, 0);
WiFi.config(ip, gateway, subnet);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
}
server.begin();
// Get the Public Ip from this service http://checkip.dyndns.org/ and api.ipify.org
UpdatePublicIP();
mySerial.begin(9600);
playFirst();
//Serial.println("Started");
}
void loop() {
WiFiClient client = server.available();
if (!client) {
return;
}
while (client.connected())
{
if(client.available())
{
// Read the first line of the request
String request = client.readStringUntil('\r');
//Serial.println(request);
client.flush();
WriteHTML(client);
client.stop();
//Serial.println("client Disconnected");
int control = PLAY;
if (request.indexOf("/CONTROL=NEXT") != -1)
{
//Serial.println("NEXT");
playNext();
}
else if (request.indexOf("/CONTROL=PREV") != -1){
//Serial.println("PREV");
playPrevious();
}
else if (request.indexOf("/CONTROL=STOP") != -1){
//Serial.println("STOP");
pause();
}
else if (request.indexOf("/CONTROL=PLAY") != -1){
//Serial.println("PLAY");
play();
}
else if (request.indexOf("/CONTROL=DOWN") != -1){
//Serial.println("DOWN");
volumn = volumn - 1;
if(volumn <= 0)
volumn = 0;
setVolume(volumn);
}
else if (request.indexOf("/CONTROL=UP") != -1){
//Serial.println("UP");
volumn = volumn + 1;
if(volumn >= 30)
volumn = 30;
setVolume(volumn);
}
break;
}
}
}
void WriteHTML(WiFiClient client)
{
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Content-Length: 500");
client.println("Connection: close");
client.println(""); // do not forget this one
client.println("<!DOCTYPE HTML>");
client.println("<html><head></head><body>");
client.println("<h1>Sudhakar Home<h1>");
client.println("<br><br>");
client.println("<h1>Remote MP3 Player <h1>");
client.println("<br>");
client.println("<a href=\"/CONTROL=NEXT\">NEXT</a>");
client.println("<a href=\"/CONTROL=PREV\">PREVIOUS</a>");
client.println("<a href=\"/CONTROL=STOP\">STOP</a>");
client.println("<a href=\"/CONTROL=PLAY\">PLAY</a>");
client.println("<a href=\"/CONTROL=UP\">VOLUMN UP</a>");
client.println("<a href=\"/CONTROL=DOWN\">VOLUMN DOWN</a>");
client.println("<br><br>");
client.println("</body></html>");
}
void UpdatePublicIP()
{
if(publicIpClient.connect(IpaddressServer,80))
{
publicIpClient.println("GET HTTP/1.1");
publicIpClient.println("Host: checkip.dyndns.org");
publicIpClient.println("Connection: close");
publicIpClient.println();
while (publicIpClient.available())
{
String c = publicIpClient.readStringUntil('\r');
publicIP = publicIP + c;
}
publicIpClient.flush();
publicIpClient.stop();
delay(1);
if(cloudClient.connect(cloudServer,80))
{
publicIP.replace("\n","");
String content = String("{ \"Addr\" : \"") + publicIP + String(" \" }");
String length = String(content.length());
cloudClient.println("POST "+ cloudURI +" HTTP/1.1");
cloudClient.println("Host: api.backendless.com");
cloudClient.println("Accept: */*");
cloudClient.println("Content-Length: " + length);
cloudClient.println("Content-Type: application/json");
cloudClient.println();
cloudClient.println(content);
while (cloudClient.available())
{
// Write the Response from POST
//Serial.write(cloudClient.read());
}
cloudClient.flush();
}
publicIpClient.stop();
cloudClient.stop();
}
}
void playFirst()
{
execute_CMD(0x3F, 0, 0); // Initialize system
delay(100);
setVolume(20);
delay(100);
execute_CMD(0x11,1,1);
//delay(500);
}
void play()
{
// 0x0D command to play and the folder 00 and the file 001
execute_CMD(0x0D,0,1);
delay(100);
}
void playNext()
{
execute_CMD(0x01,0,1);
delay(100);
}
void playPrevious()
{
execute_CMD(0x02,0,1);
delay(100);
}
void pause()
{
execute_CMD(0x0E,0,0);
delay(100);
}
void setVolume(int volume)
{
// 0x06 - Command to set volume
execute_CMD(0x06, 0, volume); // Set the volume (0x00~0x30)
delay(100);
}
void execute_CMD(byte CMD, byte Par1, byte Par2)
// Excecute the command and parameters
{
// Calculate the checksum (2 bytes)
word checksum = -(Version_Byte + Command_Length + CMD + Acknowledge + Par1 + Par2);
// Build the command line
byte Command_line[10] = { Start_Byte, Version_Byte, Command_Length, CMD, Acknowledge,
Par1, Par2, highByte(checksum), lowByte(checksum), End_Byte};
//Send the command line to the module
for (byte k=0; k<10; k++)
{
mySerial.write( Command_line[k]);
}
}
Comments