Arduino　Ethernetシールド - レッドインベーダーの部屋

ArduinoのEthernetシールドを試してみました。

一部応用あり

参考にしたサイト↓

HTTP通信でArduinoを操作する（Ethernetシールド使用）

配線図も同様↑

f:id:mrsaitouyusuke:20151112164214j:plain

スケッチ↓（青文字）

#include <SPI.h> // for Ethernet.h
#include <Ethernet.h> // for Ethernet

#define LED1PIN (7)
#define LED2PIN (8)
#define LED3PIN (9)
#define LED4PIN (6)
#define LED5PIN (4)

#define LINEBUFFERSIZE (128)
#define DELIMITER ("&")

unsigned char MACADDRESS = { 0x8C, 0x73, 0x6E, 0xE0, 0xB1, 0xED };
unsigned char IPADDRESS = { 172, 17, 25, 230 };

//↑IPアドレス、MACアドレス
EthernetServer g_server(80);

void setup()
{
Ethernet.begin(MACADDRESS, IPADDRESS);
g_server.begin();
pinMode(LED1PIN, OUTPUT);
pinMode(LED2PIN, OUTPUT);
pinMode(LED3PIN, OUTPUT);
pinMode(LED4PIN, OUTPUT);
pinMode(LED5PIN, OUTPUT);
//Serial.begin(9600);
}

// HTML出力
void PrintHtml( EthernetClient& client, boolean led1, boolean led2, boolean led3, boolean led4 , boolean led5, int speed )
{
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();

client.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">");
client.println("<html lang=\"ja\">");
client.println("<head>");
client.println("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">");
client.println("<meta http-equiv=\"Content-Style-Type\" content=\"text/css\">");
client.println("<title></title>");
client.println("</head>");
client.println("<body>");

client.println("<p>");
client.print("LED1 : "); client.print( led1 ? "ON" : "off" ); client.println("<br>");
client.print("LED2 : "); client.print( led2 ? "ON" : "off" ); client.println("<br>");
client.print("LED3 : "); client.print( led3 ? "ON" : "off" ); client.println("<br>");
client.print("LED4 : "); client.print( led4 ? "ON" : "off" ); client.println("<br>");
client.print("LED5 : "); client.print( led5 ? "ON" : "off" ); client.println("<br>");
client.println("<br>");
client.println("速さ：");
client.println(speed);
client.println("</p>");

client.println("<hr>");

client.println("<form method=\"post\" action=\"\">");
client.print("<input type=\"checkbox\" name=\"led1\" value=\"1\""); if (led1) {
client.print(" checked");
} client.println(">LED1<br>");
client.print("<input type=\"checkbox\" name=\"led2\" value=\"1\""); if (led2) {
client.print(" checked");
} client.println(">LED2<br>");
client.print("<input type=\"checkbox\" name=\"led3\" value=\"1\""); if (led3) {
client.print(" checked");
} client.println(">LED3<br>");
client.print("<input type=\"checkbox\" name=\"led4\" value=\"1\""); if (led4) {
client.print(" checked");
} client.println(">LED4<br>");
client.print("<input type=\"checkbox\" name=\"led5\" value=\"1\""); if (led5) {
client.print(" checked");
} client.println(">LED5<br>");
client.println("<br>");
client.println("速さ<br>");
client.println("1 ");
client.print("<input type=\"radio\" name=\"speed\" value=\"1\""); if (1 == speed) {
client.print(" checked");
} client.println("> ");
client.print("<input type=\"radio\" name=\"speed\" value=\"2\""); if (2 == speed) {
client.print(" checked");
} client.println("> ");
client.print("<input type=\"radio\" name=\"speed\" value=\"3\""); if (3 == speed) {
client.print(" checked");
} client.println("> ");
client.print("<input type=\"radio\" name=\"speed\" value=\"4\""); if (4 == speed) {
client.print(" checked");
} client.println("> ");
client.print("<input type=\"radio\" name=\"speed\" value=\"5\""); if (5 == speed) {
client.print(" checked");
} client.println("> ");
client.print("<input type=\"radio\" name=\"speed\" value=\"6\""); if (6 == speed) {
client.print(" checked");
} client.println("> ");
client.print("<input type=\"radio\" name=\"speed\" value=\"7\""); if (7 == speed) {
client.print(" checked");
} client.println("> ");
client.print("<input type=\"radio\" name=\"speed\" value=\"8\""); if (8 == speed) {
client.print(" checked");
} client.println("> ");
client.print("<input type=\"radio\" name=\"speed\" value=\"9\""); if (9 == speed) {
client.print(" checked");
} client.println("> ");
client.println(" 10<br>");
client.println("<br>");
client.println("<input type=\"submit\" value=\"送信\">");
client.println("<input type=\"reset\" value=\"リセット\"></form>");
client.println("<hr>");

client.println("</body>");
client.println("</html>");
}

boolean AnalyzeLineString( char* pszLine, boolean& rbLed1, boolean& rbLed2, boolean& rbLed3, boolean& rbLed4, boolean& rbLed5, int& riSpeed )
{
char* pszToken = strtok(pszLine, DELIMITER);
while (pszToken)
{
if ( 6 == strlen(pszToken)
&& 0 == strncmp(pszToken, "led", 3) )
{ // led?=1
if ( '1' == pszToken[3] ) {
rbLed1 = true;
}
else if ( '2' == pszToken[3] ) {
rbLed2 = true;
}
else if ( '3' == pszToken[3] ) {
rbLed3 = true;
}
else if ( '4' == pszToken[3] ) {
rbLed4 = true;
}
else if ( '5' == pszToken[3] ) {
rbLed5 = true;
}
}
else if ( 7 == strlen(pszToken)
&& 0 == strncmp(pszToken, "speed", 5) )
{ // speed=?
riSpeed = pszToken[6] - '0';
}
pszToken = strtok(NULL, DELIMITER);
}
return true;
}

boolean readHttpRequest( EthernetClient& client, boolean& rbLed1, boolean& rbLed2, boolean& rbLed3, boolean& rbLed4, boolean& rbLed5, int& riSpeed )
{
if ( !client )
{
return false;
}

// HTTPリクエスト空行（\r\n\r\n）で終わる。ので、空行を探す。
boolean foundRNRN = false;
boolean currentLineIsBlank = true;
char szLine[LINEBUFFERSIZE];
int iIndex = 0;
while ( client.connected() )
{
if ( !client.available() )
{
//continue;
break;
}

char c = client.read();
// Serial.print(c);
if ( '\n' == c && currentLineIsBlank )
{ // 空行発見。
foundRNRN = true;
}
if ( '\n' == c )
{
// httpリクエストの１行の解析
if ( foundRNRN
&& 0 != iIndex )
{
szLine[iIndex] = '\0';
AnalyzeLineString( szLine, rbLed1, rbLed2, rbLed3, rbLed4, rbLed5, riSpeed );
}
// 新しい行の始まり。
currentLineIsBlank = true;
iIndex = 0;
}
else if ( '\r' != c )
{ // この行は空行ではなかった。
currentLineIsBlank = false;
if ( foundRNRN )
{
if ( LINEBUFFERSIZE - 1 > iIndex )
{
szLine[iIndex] = c;
++iIndex;
}
}
}
}
// httpリクエストの終端行の解析
if ( foundRNRN
&& 0 != iIndex )
{
szLine[iIndex] = '\0';
AnalyzeLineString( szLine, rbLed1, rbLed2, rbLed3, rbLed4, rbLed5, riSpeed );
}

return foundRNRN;
}

void loop()
{
static boolean s_led1 = false;
static boolean s_led2 = false;
static boolean s_led3 = false;
static boolean s_led4 = false;
static boolean s_led5 = false;
static int s_interval = 0;

EthernetClient client = g_server.available();
boolean led1 = false;
boolean led2 = false;
boolean led3 = false;
boolean led4 = false;
boolean led5 = false;
int speed = 5;
if ( readHttpRequest(client, led1, led2, led3, led4, led5, speed) )
{
// Html出力
PrintHtml(client, led1, led2, led3, led4, led5, speed);

// Webブラウザに対して、データを取得するための時間を与える。
delay(1);

// コネクションを閉じる。
client.stop();

s_led1 = led1;
s_led2 = led2;
s_led3 = led3;
s_led4 = led4;
s_led5 = led5;
// speed | 1 9
// 間隔[秒] | 0.5 0.01
// interval[ms] | 500 10
s_interval = (int)(500L + (speed - 1) * (10L - 500L) / (9 - 1));
}

if ( s_led1 ) {
digitalWrite(LED1PIN, HIGH);
}
if ( s_led2 ) {
digitalWrite(LED2PIN, HIGH);
}
if ( s_led3 ) {
digitalWrite(LED3PIN, HIGH);
}
if ( s_led4 ) {
digitalWrite(LED4PIN, HIGH);
}
if ( s_led5 ) {
digitalWrite(LED5PIN, HIGH);
}
delay(s_interval);
digitalWrite(LED1PIN, LOW);
digitalWrite(LED2PIN, LOW);
digitalWrite(LED3PIN, LOW);
digitalWrite(LED4PIN, LOW);
digitalWrite(LED5PIN, LOW);
delay(s_interval);
}