lauchpad cc3200 điều khiển thiết bị qua wifi - control devices with Lauchpad cc3200 over wifi, LAN
Ví dụ dưới đây cho phép chúng ta điều khiển thiết bị điện thông qua mạng wifi/LAN một cách đơn giản.
#ifndef __CC3200R1M1RGC__
// Do not include SPI for CC3200 LaunchPad
#include <SPI.h>
#endif
#include <WiFi.h>
// your network name also called SSID
char ssid[] = "tên wifi";
// your network password
char password[] = "password wifi";
// your network key Index number (needed only for WEP)
int keyIndex = 0;
int aa = 0;
WiFiServer server(80);
const int buttonPin = PUSH2;
const int buttonPin1 = PUSH1;
int buttonState = 0;
int buttonState1 = 0;
void setup() {
Serial.begin(115200); // initialize serial communication
pinMode(RED_LED, OUTPUT); // set the LED pin mode
pinMode(10, OUTPUT);
pinMode(buttonPin, INPUT_PULLUP);
pinMode(buttonPin1, INPUT_PULLUP);
// attempt to connect to Wifi network:
Serial.print("Attempting to connect to Network named: ");
// print the network name (SSID);
Serial.println(ssid);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
WiFi.begin(ssid, password);
while ( WiFi.status() != WL_CONNECTED) {
// print dots while we wait to connect
Serial.print(".");
delay(300);
}
Serial.println("\nYou're connected to the network");
Serial.println("Waiting for an ip address");
while (WiFi.localIP() == INADDR_NONE) {
// print dots while we wait for an ip addresss
Serial.print(".");
delay(300);
}
Serial.println("\nIP Address obtained");
// you're connected now, so print out the status
printWifiStatus();
Serial.println("Starting webserver on port 80");
server.begin(); // start the web server on port 80
Serial.println("Webserver started!");
}
void loop() {
int i = 0;
WiFiClient client = server.available(); // listen for incoming clients
buttonState = digitalRead(buttonPin);
buttonState1 = digitalRead(buttonPin1);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState1 == HIGH && aa == 0) {
// turn LED on:
aa = 1;
//digitalWrite(10, HIGH);
}
if (buttonState == HIGH & aa==1) {
// turn LED off:
aa = 0;
//digitalWrite(10, LOW);
}
if (aa == 0){
digitalWrite(10, LOW);}
if (aa == 1){
digitalWrite(10, HIGH);}
if (client) { // if you get a client,
Serial.println("new client"); // print a message out the serial port
char buffer[150] = {0}; // make a buffer to hold incoming data
while (client.connected()) { // loop while the client's connected
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
Serial.write(c); // print it out the serial monitor
if (c == '\n') { // if the byte is a newline character
// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send '"response:
if (strlen(buffer) == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println();
// the content of the HTTP response follows the header:
client.println("<html><head><title>CC3200 WiFi Web Server</title></head><body bgcolor=blue align=center>");
client.println("<h1 align=center><font color=\"red\">Welcome to Van Hien University</font></h1>");
client.println("<hr size=5px width=50% color=red align=center>");
client.print("<font face=arial size=4 color=yellow>LED 1</font><button onclick=\"location.href='/H'\">HIGH</button>");
client.println(" <button onclick=\"location.href='/L'\">LOW</button><br>");
client.println("<br>");
client.print("<font face=arial size=4 color=yellow>LED 2</font><button onclick=\"location.href='/A'\">HIGH</button>");
client.println(" <button onclick=\"location.href='/B'\">LOW</button><br>");
if (aa == 1){
client.println("LED xanh sang");
}
if (aa == 0){
client.println("LED xanh tat");
}
// The HTTP response ends with another blank line:
client.println();
// break out of the while loop:
break;
}
else { // if you got a newline, then clear the buffer:
memset(buffer, 0, 150);
i = 0;
}
}
else if (c != '\r') { // if you got anything else but a carriage return character,
buffer[i++] = c; // add it to the end of the currentLine
}
// Check to see if the client request was "GET /H" or "GET /L":
if (endsWith(buffer, "GET /H")) {
digitalWrite(RED_LED, HIGH); // GET /H turns the LED on
}
if (endsWith(buffer, "GET /L")) {
digitalWrite(RED_LED, LOW); // GET /L turns the LED off
}
if (endsWith(buffer, "GET /A")) {
digitalWrite(10, HIGH); // GET /H turns the LED on
aa =1;
}
if (endsWith(buffer, "GET /B")) {
digitalWrite(10, LOW); // GET /L turns the LED off
aa = 0;
}
}
}
// close the connection:
client.stop();
Serial.println("client disonnected");
}
}
//
//a way to check if one array ends with another array
//
boolean endsWith(char* inString, char* compString) {
int compLength = strlen(compString);
int strLength = strlen(inString);
//compare the last "compLength" values of the inString
int i;
for (i = 0; i < compLength; i++) {
char a = inString[(strLength - 1) - i];
char b = compString[(compLength - 1) - i];
if (a != b) {
return false;
}
}
return true;
}
void printWifiStatus() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your WiFi IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.print(rssi);
Serial.println(" dBm");
// print where to go in a browser:
Serial.print("To see this page in action, open a browser to http://");
Serial.println(ip);
}
// Do not include SPI for CC3200 LaunchPad
#include <SPI.h>
#endif
#include <WiFi.h>
// your network name also called SSID
char ssid[] = "tên wifi";
// your network password
char password[] = "password wifi";
// your network key Index number (needed only for WEP)
int keyIndex = 0;
int aa = 0;
WiFiServer server(80);
const int buttonPin = PUSH2;
const int buttonPin1 = PUSH1;
int buttonState = 0;
int buttonState1 = 0;
void setup() {
Serial.begin(115200); // initialize serial communication
pinMode(RED_LED, OUTPUT); // set the LED pin mode
pinMode(10, OUTPUT);
pinMode(buttonPin, INPUT_PULLUP);
pinMode(buttonPin1, INPUT_PULLUP);
// attempt to connect to Wifi network:
Serial.print("Attempting to connect to Network named: ");
// print the network name (SSID);
Serial.println(ssid);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
WiFi.begin(ssid, password);
while ( WiFi.status() != WL_CONNECTED) {
// print dots while we wait to connect
Serial.print(".");
delay(300);
}
Serial.println("\nYou're connected to the network");
Serial.println("Waiting for an ip address");
while (WiFi.localIP() == INADDR_NONE) {
// print dots while we wait for an ip addresss
Serial.print(".");
delay(300);
}
Serial.println("\nIP Address obtained");
// you're connected now, so print out the status
printWifiStatus();
Serial.println("Starting webserver on port 80");
server.begin(); // start the web server on port 80
Serial.println("Webserver started!");
}
void loop() {
int i = 0;
WiFiClient client = server.available(); // listen for incoming clients
buttonState = digitalRead(buttonPin);
buttonState1 = digitalRead(buttonPin1);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState1 == HIGH && aa == 0) {
// turn LED on:
aa = 1;
//digitalWrite(10, HIGH);
}
if (buttonState == HIGH & aa==1) {
// turn LED off:
aa = 0;
//digitalWrite(10, LOW);
}
if (aa == 0){
digitalWrite(10, LOW);}
if (aa == 1){
digitalWrite(10, HIGH);}
if (client) { // if you get a client,
Serial.println("new client"); // print a message out the serial port
char buffer[150] = {0}; // make a buffer to hold incoming data
while (client.connected()) { // loop while the client's connected
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
Serial.write(c); // print it out the serial monitor
if (c == '\n') { // if the byte is a newline character
// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send '"response:
if (strlen(buffer) == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println();
// the content of the HTTP response follows the header:
client.println("<html><head><title>CC3200 WiFi Web Server</title></head><body bgcolor=blue align=center>");
client.println("<h1 align=center><font color=\"red\">Welcome to Van Hien University</font></h1>");
client.println("<hr size=5px width=50% color=red align=center>");
client.print("<font face=arial size=4 color=yellow>LED 1</font><button onclick=\"location.href='/H'\">HIGH</button>");
client.println(" <button onclick=\"location.href='/L'\">LOW</button><br>");
client.println("<br>");
client.print("<font face=arial size=4 color=yellow>LED 2</font><button onclick=\"location.href='/A'\">HIGH</button>");
client.println(" <button onclick=\"location.href='/B'\">LOW</button><br>");
if (aa == 1){
client.println("LED xanh sang");
}
if (aa == 0){
client.println("LED xanh tat");
}
// The HTTP response ends with another blank line:
client.println();
// break out of the while loop:
break;
}
else { // if you got a newline, then clear the buffer:
memset(buffer, 0, 150);
i = 0;
}
}
else if (c != '\r') { // if you got anything else but a carriage return character,
buffer[i++] = c; // add it to the end of the currentLine
}
// Check to see if the client request was "GET /H" or "GET /L":
if (endsWith(buffer, "GET /H")) {
digitalWrite(RED_LED, HIGH); // GET /H turns the LED on
}
if (endsWith(buffer, "GET /L")) {
digitalWrite(RED_LED, LOW); // GET /L turns the LED off
}
if (endsWith(buffer, "GET /A")) {
digitalWrite(10, HIGH); // GET /H turns the LED on
aa =1;
}
if (endsWith(buffer, "GET /B")) {
digitalWrite(10, LOW); // GET /L turns the LED off
aa = 0;
}
}
}
// close the connection:
client.stop();
Serial.println("client disonnected");
}
}
//
//a way to check if one array ends with another array
//
boolean endsWith(char* inString, char* compString) {
int compLength = strlen(compString);
int strLength = strlen(inString);
//compare the last "compLength" values of the inString
int i;
for (i = 0; i < compLength; i++) {
char a = inString[(strLength - 1) - i];
char b = compString[(compLength - 1) - i];
if (a != b) {
return false;
}
}
return true;
}
void printWifiStatus() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your WiFi IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.print(rssi);
Serial.println(" dBm");
// print where to go in a browser:
Serial.print("To see this page in action, open a browser to http://");
Serial.println(ip);
}
Trong đoạn code trên có chức năng :
- thao tác bật tắt thiệt bị bằng button trên giao diện web
- Bật tắt thiết bị bằng 2 button vật lý có trên board.
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