Revision 5:9b4fd5f07e10, committed 2016-01-06

Comitter:

stueckler

Date:

Wed Jan 06 14:47:02 2016 +0000

Parent:

4:d34811deedab

Commit message:

WEB Server to control one LED

Changed in this revision

--- a/UIPEthernet.lib	Wed Feb 04 19:27:26 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-http://mbed.org/users/hudakz/code/UIPEthernet/#5b17e4656dd0

--- a/main.cpp	Wed Feb 04 19:27:26 2015 +0000
+++ b/main.cpp	Wed Jan 06 14:47:02 2016 +0000
@@ -1,207 +1,349 @@
-/* In this example LED1 is switched on/off using a web browser connected to this HTTP server.
- * The example is based on the Tuxgraphics Web Switch <http://www.tuxgraphics.org/>.
- * This HTTP server is built around the the ENC28J60 chip 
- * driven by the UIPEthernet library <https://github.com/ntruchsess/arduino_uip>
- * ported to mbed.
- */
+#include <mbed.h>
 
-#include <mbed.h>
-#include <UIPEthernet.h>
-#include <UIPServer.h>
-#include <UIPClient.h>
-#include <string>
-
-using namespace std;
+// WEB Server to control one LED
+// -----------------------------
 
-// UIPEthernet is the name of a global instance of UIPEthernetClass.
-// Do not change the name! It is used within the UIPEthernet library.
-#if defined(TARGET_LPC1768)
-UIPEthernetClass UIPEthernet(p11, p12, p13, p8);        // mosi, miso, sck, cs
-#elif defined(TARGET_LPC1114)
-UIPEthernetClass UIPEthernet(dp2, dp1, dp6, dp25);      // mosi, miso, sck, cs
-#elif defined(TARGET_LPC11U68)
-UIPEthernetClass UIPEthernet(P0_9, P0_8, P1_29, P0_2);  // mosi, miso, sck, cs
-#elif defined (TARGET_NUCLEO_F103RB)
-UIPEthernetClass UIPEthernet(PB_5, PB_4, PB_3, PB_6);   // mosi, miso, sck, cs
-#elif defined (TARGET_NUCLEO_F401RE)
-UIPEthernetClass UIPEthernet(PB_5, PB_4, PB_3, PB_6);   // mosi, miso, sck, cs
-#elif defined (TARGET_NUCLEO_F411RE)
-UIPEthernetClass UIPEthernet(PB_5, PB_4, PB_3, PB_6);   // mosi, miso, sck, cs
+Serial pc(USBTX, USBRX);
+Serial esp(PA_9, PA_10);    // tx, rx 
+DigitalOut  sw(PA_5);       // Change LED to a pin of your choice. However, make sure that it does not collide with any serial pins already used
+
+Timer t;
 
-// If your board/plaform is not present yet then uncomment the following two lines and replace TARGET_YOUR_BOARD as appropriate.
-
-//#elif defined (TARGET_YOUR_BOARD)
-//UIPEthernetClass UIPEthernet(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS);   // mosi, miso, sck, cs
-
-#endif
-
-// Note:
-// If it happends that any of the SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS pins collide with LED1 pin
-// then either use different SPI port (if available on the board) and change the pin names in the constructor UIPEthernet(...) accordingly
-// or instead of using LED1 pin, select a free pin (not used by SPI port) and connect to it an external LED which is connected to a resitor that is connected to the groud.
-// In the second case remember to replace LED1 in sw(LED1) constructor (see below).
-
+int  count,ended,timeout;
+char buf[1024];
+char snd[255];
 
-// MAC number must be unique within the connected network. Modify as appropriate.
-const uint8_t    MY_MAC[6] = {0x00,0x01,0x02,0x03,0x04,0x06};
-// IP address must be also unique and compatible with your network. Change as appropriate.
-const IPAddress  MY_IP(192,168,1,181);
-const uint16_t   MY_PORT = 80;      // for HTTP connection
-EthernetServer   myServer = EthernetServer(MY_PORT);
-// In this example we are turning on/off LED1.
-DigitalOut       sw(LED1);  // Change LED1 to a pin of your choice. However, make sure that it does not collide with any of the SPI pins already used in the UIPEthernet(...) constructor above!
+const char* PASSWORD = "secret";        // change as you like
+const char ssid[32] = "ESP8266";        // enter router ssid inside the quotes
+const char pwd [32] = "ok";             // enter router password inside the quotes
+char http[1024];                        // HTTP content
+uint8_t port = 80;
+int id = 1;
 
-const string PASSWORD     = "secret";   // change as you like
-const string HTTP_OK      = "HTTP/1.0 200 OK";
-const string MOVED_PERM   = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
-const string UNAUTHORIZED = "HTTP/1.0 401 Unauthorized";
-string       httpHeader;     // HTTP header
-string       httpContent;    // HTTP content
+void SendCMD(char*),SendData(char*),GetReplyLine(int,char*,int),GetReply(int,char*,int),ESPconfig_Server(),ESPconfig_Client(),ESPsetbaudrate(),page(int);
+int checksw(char*);
 
 
-// analyse the url given
-// return values: -1 invalid password
-//                -2 no command given but password valid
-//                -3 just refresh page
-//                 0 switch off
-//                 1 switch on
-//
-//                The string passed to this function will look like this:
-//                GET /password HTTP/1.....
-//                GET /password/ HTTP/1.....
-//                GET /password/?sw=1 HTTP/1.....
-//                GET /password/?sw=0 HTTP/1.....
-
-int8_t analyse_get_url(string& str)
-{
-    if(str.substr(5, PASSWORD.size()) != PASSWORD)
-        return(-1);
-
-    uint8_t pos = 5 + PASSWORD.size();
-
-    if(str.substr(pos, 1) == " ")
-        return(-2);
-
-    if(str.substr(pos, 1) != "/")
-        return(-1);
-
-    pos++;
-
-    string cmd(str.substr(pos, 5));
-
-    if(cmd == "?sw=0")
-        return(0);
-
-    if(cmd == "?sw=1")
-        return(1);
-
-    return(-3);
-}
+// USAGE:
+//       IP/password
+//       IP/password/?sw=1 
+//       IP/password/?sw=0 
 
-string& moved_perm(uint8_t flag)
-{
-    if(flag == 1)
-        httpContent = "/" +  PASSWORD + "/";
-    else
-        httpContent = "";
-
-    httpContent += "<h1>301 Moved Permanently</h1>\r\n";
-
-    return (httpContent);
-}
-
-string& page(uint8_t status)
-{
-    httpContent = "<h2>Web Switch</h2>\r\n";
-
-    if(status == 1) {
-        httpContent += "<pre>\r\n  <font color=#FF0000>ON</font>";
-        httpContent += " <a href=\"./?sw=0\">[switch off]</a>\r\n";
-    } else {
-        httpContent += "<pre>\r\n  <font color=#00FF00>OFF</font>";
-        httpContent += " <a href=\"./?sw=1\">[switch on]</a>\r\n";
-    }
-
-    httpContent += "  <a href=\".\">[refresh status]</a>\r\n";
-    httpContent += "</pre>\r\n";
-    httpContent += "<hr>\r\n";
-    return httpContent;
-}
-
-void http_send(EthernetClient& client, string& header, string& content)
-{
-    char content_length[5] = {};
-
-    header += "\r\nContent-Type: text/html\r\n";
-    header += "Content-Length: ";
-    sprintf(content_length, "%d", content.length());
-    header += string(content_length) + "\r\n";
-    header += "Pragma: no-cache\r\n";
-    header += "Connection: About to close\r\n";
-    header += "\r\n";
-    string webpage = header + content;
-    client.write((uint8_t*)webpage.c_str(),webpage.length());
-}
 
 int main()
 {
-    UIPEthernet.begin(MY_MAC,MY_IP);
-    myServer.begin();
+
+    // Setup    
+    esp.baud(115200);  // esp speed
+    pc.baud(9600);     // change this to the new ESP8266 baudrate if it is changed at any time.    
+    
+
+    //ESPconfig_Client();        
+    ESPconfig_Server();    
+        
+    for (int i=0; i<8; i++)
+    {
+        sw=!sw;
+        wait(0.3);
+    }
+       
+    
+    // Loop
     while(1) {
-        EthernetClient client = myServer.available();
-        if (client) {
-            size_t size = client.available();
-            if(size > 0) {
-                uint8_t* buf = (uint8_t*)malloc(size);
-                size = client.read(buf, size);
-                string received((char*)buf);
-                free(buf);
-                if(received.substr(0, 3) != "GET") {
-                    // head, post or other method
-                    // for possible status codes see:
-                    // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
-                    httpHeader = HTTP_OK;
-                    httpContent = "<h1>200 OK</h1>";
-                    http_send(client, httpHeader, httpContent);
-                    continue;
-                }
-
-                if(received.substr(0, 6) == "GET / ") {
-                    httpHeader = HTTP_OK;
-                    httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n";
-                    http_send(client, httpHeader, httpContent);
-                    continue;
+        timeout=2;
+        if(esp.readable()){         
+            GetReply(500,buf,sizeof(buf));  
+            char* rqstPnt = strstr(buf, "+IPD");
+            if(rqstPnt != NULL)
+            {
+                sscanf(rqstPnt, "+IPD,%d", &id);
+                
+                page(checksw(buf));
+                         
+                // Command TCP/IP Data Tx
+                sprintf(snd,"AT+CIPSEND=%d,%d\r\n", id, strlen(http));
+                SendCMD(snd);
+                GetReply(500,buf,sizeof(buf));  
+                
+                SendData(http);
+                     
+                bool weberror = true;
+                int cnt = 0;
+                while(weberror && cnt < 100){
+                    GetReply(500,buf,sizeof(buf));  
+                    if(strstr(buf, "SEND OK") != NULL) 
+                        weberror = false;
+                
+                    cnt++;
                 }
-
-                int cmd = analyse_get_url(received);
-
-                if(cmd == -2) {
-                    // redirect to the right base url
-                    httpHeader = MOVED_PERM;
-                    http_send(client, httpHeader, moved_perm(1));
-                    continue;
+                        
+                if(weberror)
+                {
+                    strcpy(snd,"AT+CIPMUX=1\r\n");
+                    SendCMD(snd);
+                    GetReply(500,buf,sizeof(buf));  
+    
+                    sprintf(snd,"AT+CIPSERVER=1,%d\r\n", port);
+                    SendCMD(snd);
+                    GetReply(2000,buf,sizeof(buf));  
                 }
-
-                if(cmd == -1) {
-                    httpHeader = UNAUTHORIZED;
-                    httpContent = "<h1>401 Unauthorized</h1>";
-                    http_send(client, httpHeader, httpContent);
-                    continue;
+                else
+                {
+                    sprintf(snd,"AT+CIPCLOSE=%d\r\n", id);  // Notice id is an int formatted to string
+                    SendCMD(snd);
+                    GetReply(500,buf,sizeof(buf));  
                 }
-
-                if(cmd == 1) {
-                    sw = 1;     // switch on
-                }
-
-                if(cmd == 0) {
-                    sw = 0;    // switch off
-                }
-
-                httpHeader = HTTP_OK;
-                http_send(client, httpHeader, page(sw));
             }
         }
     }
 }
 
 
+void page(int status)
+{
+    char content_length[5];
+    char info[255];
+    
+    strcpy(info,"<h2>Web Switch</h2>\r\n");
+
+    if(status < 0) 
+    {
+        strcat(info,"<p>Usage: http://host_or_ip/password</p>\r\n");   
+    }
+    else if (status == 1)
+    {
+        strcat(info,"<pre>\r\n  <font color=#FF0000>ON</font>");
+        strcat(info," <a href=\"./?sw=0\">[switch off]</a>\r\n");
+    } 
+    else 
+    {
+        strcat(info,"<pre>\r\n  <font color=#00FF00>OFF</font>");
+        strcat(info," <a href=\"./?sw=1\">[switch on]</a>\r\n");
+    }
+
+    strcat(info,"  <a href=\".\">[refresh status]</a>\r\n");
+    strcat(info,"</pre>\r\n");
+    strcat(info,"<br>\r\n");
+    
+    strcpy(http,"HTTP/1.0 200 OK");
+    strcat(http,"\r\nContent-Type: text/html\r\n");   
+    strcat(http,"Content-Length: ");
+    sprintf(content_length, "%d", strlen(buf));
+    strcat(http,content_length);
+    strcat(http,"\r\nPragma: no-cache\r\n");
+    strcat(http,"Connection: About to close\r\n\r\n");
+    strcat(http,info);
+}
+
+
+int checksw(char *buf)
+{
+    int ret = 0;
+    
+    if(strstr(buf,PASSWORD)== NULL)
+        return -1;
+ 
+     char* rqstPnt = strstr(buf, "?sw=");
+     if(rqstPnt == NULL)
+        ret = 0;  
+     else  
+        sscanf(rqstPnt,"?sw=%d", &ret);
+       
+     if(ret == 1)
+        sw = 1;     // switch on
+     else
+        sw = 0;    // switch off 
+       
+     return  ret;             
+}
+
+
+void ESPconfig_Server()
+{
+
+    pc.printf("------- Starting ESP Config -------\r\n\n");
+    pc.printf("------- Reset & get Firmware ------\r\n");
+    strcpy(snd,"AT+RST\r\n");
+    SendCMD(snd);
+    GetReply(6000,buf,sizeof(buf));  
+      
+   
+    pc.printf("\n---------- Get Version ----------\r\n");
+    strcpy(snd,"AT+GMR\r\n");
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf));  
+    pc.printf(buf);  
+    GetReply(1000,buf,sizeof(buf));  
+            
+    // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
+    pc.printf("\n---------- Setting Mode ----------\r\n");
+    strcpy(snd, "AT+CWMODE=2\r\n");
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf));  
+    pc.printf(buf);    
+    
+    // set CIPMUX to 0=Single,1=Multi 
+    pc.printf("\n---- Setting Connection Mode -----\r\n");
+    strcpy(snd, "AT+CIPMUX=1\r\n"); 
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf)); 
+    
+    
+     
+    pc.printf("\n------------  AP ------------\r\n");
+    pc.printf("ssid = %s   pwd = %s\r\n",ssid,pwd);
+    strcpy(snd, "AT+CWSAP=\"");
+    strcat(snd, ssid);
+    strcat(snd, "\",\"");
+    strcat(snd, pwd);
+    strcat(snd, "\",4,0\r\n");   
+    SendCMD(snd);
+    GetReply(8000,buf,sizeof(buf));     
+    pc.printf(buf);  
+  
+    pc.printf("\n------- Set Server Port ------\r\n");
+    sprintf(snd, "AT+CIPSERVER=1,%d\r\n", port);
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf));    
+        
+        
+    pc.printf("\n----- Set Server Timeout -----\r\n");
+    sprintf(snd,"AT+CIPSTO=%d\r\n", 5);
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf)); 
+     
+    
+    pc.printf("\n---------- Get IP's ----------\r\n"); 
+    strcpy(snd, "AT+CWSAP?\r\n"); 
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf));   
+    pc.printf(buf);
+    
+    strcpy(snd, "AT+CIFSR\r\n");
+    SendCMD(snd);
+    GetReply(2000,buf,sizeof(buf)); 
+    pc.printf(buf);          
+    pc.printf("\n------- Connection Up --------\r\n"); 
+ 
+} 
+
+void ESPconfig_Client()
+{
+
+    pc.printf("---------- Starting ESP Config -----------\r\n\n");
+    pc.printf("---------- Reset & get Firmware ----------\r\n");
+    strcpy(snd,"AT+RST\r\n");
+    SendCMD(snd);
+    GetReply(6000,buf,sizeof(buf));  
+      
+   
+    pc.printf("\n---------- Get Version ----------\r\n");
+    strcpy(snd,"AT+GMR\r\n");
+    SendCMD(snd);
+    GetReply(3000,buf,sizeof(buf));  
+    pc.printf(buf);  
+        
+    // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
+    pc.printf("\n---------- Setting Mode ----------\r\n");
+    strcpy(snd, "AT+CWMODE=1\r\n");
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf));  
+    
+    
+    // set CIPMUX to 0=Single,1=Multi 
+    pc.printf("\n-------- Setting Connection Mode ---------\r\n");
+    strcpy(snd, "AT+CIPMUX=1\r\n"); 
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf)); 
+    
+    
+    pc.printf("\n---------- Listing Acces Points ----------\r\n");
+    strcpy(snd, "AT+CWLAP\r\n");
+    SendCMD(snd);
+    GetReply(3000,buf,sizeof(buf));      
+    pc.printf(buf);      
+    
+    pc.printf("\n---------- Connecting to AP ----------\r\n");
+    pc.printf("ssid = %s   pwd = %s\r\n",ssid,pwd);
+    strcpy(snd, "AT+CWJAP=\"");
+    strcat(snd, ssid);
+    strcat(snd, "\",\"");
+    strcat(snd, pwd);
+    strcat(snd, "\"\r\n");   
+    SendCMD(snd);
+    GetReply(8000,buf,sizeof(buf));     
+    pc.printf(buf);  
+  
+    pc.printf("\n------ Set Server Port -------\r\n");
+    sprintf(snd, "AT+CIPSERVER=1,%d\r\n", port);
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf));    
+        
+        
+    pc.printf("\n----- Set Server Timeout -----\r\n");
+    sprintf(snd,"AT+CIPSTO=%d\r\n", 5);
+    SendCMD(snd);
+    GetReply(1000,buf,sizeof(buf)); 
+     
+    
+    pc.printf("\n---------- Get IP's ----------\r\n"); 
+    int weberror = true;
+    while(weberror) {  // wait for valid IP
+        strcpy(snd, "AT+CIFSR\r\n");
+        SendCMD(snd);
+        GetReply(2000,buf,sizeof(buf)); 
+        pc.printf(buf);
+        if(strstr(buf, "0.0.0.0") == NULL) {
+                weberror=false;   
+        }
+    }    
+            
+    pc.printf("\n------- Connection Up --------\r\n"); 
+ 
+} 
+
+void SendCMD(char *cmd)
+{    
+    esp.printf("%s", cmd);    
+} 
+
+void SendData(char *dat)
+{    
+    esp.printf("%s", dat);    
+} 
+
+void GetReply(int timeout, char *buf, int size)
+{    
+    char c;
+    ended=0;
+    count=0;
+    t.start();
+    memset(buf, '\0', size);   
+    while(!ended) {
+        if(esp.readable()) {         
+            c = esp.getc();
+                  
+            buf[count] = c;
+            count++;
+            
+            if (c == '\r' || c == '\n') // OK will end
+            {
+                if (count > 2 && buf[count-3]== 'O' && buf[count-2] == 'K')
+                {
+                    buf[count-1] = '\r';
+                    buf[count] = '\n';
+                    count = size;
+                }
+            }
+        }
+        
+        if(t.read_ms() > timeout || count >= size) // Timeout or full
+        {
+            ended = 1;
+            t.stop();
+            t.reset();
+        }
+    }  
+    //pc.printf(buf);
+}              
+