Diff: ESP8266_WebServer/ESP8266_WebServer.cpp

Revision:

7:f15c81074400

Parent:

5:42c6f9d916bc

Child:

9:319aeb6e0123

--- a/ESP8266_WebServer/ESP8266_WebServer.cpp	Thu Dec 18 15:02:20 2014 +0000
+++ b/ESP8266_WebServer/ESP8266_WebServer.cpp	Thu Dec 18 16:06:10 2014 +0000
@@ -1,6 +1,163 @@
 #include "ESP8266_WebServer.h"
+#include <string>
+
+ESP8266_WebServer::ESP8266_WebServer(Serial *espUART) {
+    serial = espUART;
+    rxptr = buffer;
+    debugSerial = NULL;
+}
+
+void ESP8266_WebServer::rxint(void) {
+    char c = serial->getc();
+    if( debugSerial != NULL ) {
+        debugSerial->putc(c);
+    }
+    *rxptr = c;
+    rxptr++;
+    *rxptr = 0;    
+}
+
+void ESP8266_WebServer::readBuffer(void) {
+    strncpy(reply, buffer, 1024);
+    rxptr = buffer;
+    *rxptr = 0;
+}
+
+short ESP8266_WebServer::data_waiting(void)
+{
+    char* ok = strstr(buffer, "OK\r\n");
+    char* error = strstr(buffer, "ERROR\r\n");
+    char* nochange = strstr(buffer, "no change\r\n");
+    
+    if( (ok != NULL) || (error != NULL ) || (nochange != NULL ) )
+    {
+        return 1;
+    }
+
+    return 0;
+}
+
+short ESP8266_WebServer::string_waiting(const char* str)
+{
+    char* pr = strstr(buffer, str);
+    char* error = strstr(buffer, "ERROR\r\n");
+    
+    if( (pr != NULL) || (error != NULL ) )
+    {
+        return 1;
+    }
+
+    return 0;
+}
 
-ESP8266_WebServer::ESP8266_WebServer(Serial espUART)
+void ESP8266_WebServer::Initialize(void) {
+    readBuffer();
+    while( string_waiting("\r\nready\r\n") == 0 ) {
+        wait_ms(10);
+    }
+    readBuffer();
+    
+    if( debugSerial != NULL ) {
+        debugSerial->printf("Done\r\nSetting operating mode...");
+    }
+    serial->printf("AT+CWMODE=3\r\n");
+    while( data_waiting() == 0 ) {
+        wait_ms(10);
+    }
+    readBuffer();
+    
+    if( debugSerial != NULL ) {
+        debugSerial->printf("Done\r\nAccept Multiple connections...");
+    }
+    serial->printf("AT+CIPMUX=1\r\n");
+    while( data_waiting() == 0 ) {
+        wait_ms(10);
+    }
+    readBuffer();
+    
+    if( debugSerial != NULL ) {
+        debugSerial->printf("Done\r\nStarting Web Server...");
+    }
+    
+    serial->printf("AT+CIPSERVER=1,80\r\n");
+    while( data_waiting() == 0 ) {
+        wait_ms(10);
+    }
+    readBuffer();
+}
+
+bool ESP8266_WebServer::GetRequest(void)
 {
-    serial = espUART;
-}
\ No newline at end of file
+    if( (string_waiting("+IPD") == 1) && (string_waiting("\r\nOK\r\n") == 1) ) {
+        if( debugSerial != NULL ) {
+            debugSerial->printf("\r\nGot Data\r\n");
+        }
+        readBuffer();
+
+        char* ipdPacket = strstr(reply, "+IPD");
+        int bytesRecv, ipdLen;
+        int numMatched = sscanf(ipdPacket,"+IPD,%d,%d:%n", &LinkID, &bytesRecv, &ipdLen);
+        if( numMatched != 2 ) {
+            if( debugSerial != NULL ) {
+                debugSerial->printf("IPD ERROR : Matched %d, LinkID=%d, BytesRecv=%d, IPD Header Len=%d\r\n", numMatched, LinkID, bytesRecv, ipdLen);
+            }
+            return false;
+        }
+
+        if( debugSerial != NULL ) {
+            debugSerial->printf("IPD Data: LinkID=%d, BytesRecv=%d, IPD Header Len=%d\r\n", LinkID, bytesRecv, ipdLen);
+        }
+        if( strstr(ipdPacket, "HTTP") != NULL ) {
+            if( debugSerial != NULL ) {
+                debugSerial->printf("Got HTTP Request\r\n");
+            }
+            char* httpPacket = ipdPacket + ipdLen;
+            if( debugSerial != NULL ) {
+                debugSerial->printf("HTTP Packet: %s\r\n", httpPacket);
+            }
+
+            numMatched = sscanf(httpPacket, "%s %s HTTP/%*c.%*c", httpMethod, httpURI);
+            if( numMatched != 2 ) {
+                if( debugSerial != NULL ) {
+                    debugSerial->printf("HTTP ERROR : Matched %d, Method=%s, URI=%s\r\n", numMatched, httpMethod, httpURI);
+                }
+                return false;
+            }
+            if( debugSerial != NULL ) {
+                debugSerial->printf("HTTP %s %s\r\n", httpMethod, httpURI);
+            }
+
+            Method = httpMethod;
+            URI = httpURI;
+            
+            return true;
+        }
+    }
+    
+    return false;
+}
+
+void ESP8266_WebServer::sendResponse(int linkID) {
+    int bytes = strlen(response);
+    if( debugSerial != NULL ) {
+        debugSerial->printf("HTTP Reply Packet(%d bytes): %s\r\n", bytes, response);
+    }
+    serial->printf("AT+CIPSEND=%d,%d\r\n", linkID, bytes);
+    wait_ms(500);
+    if( (string_waiting("\r\n>") == 1) ) {
+        serial->printf(response);
+    }
+    while( string_waiting("\r\nSEND OK\r\n") == 0 ) {
+        wait_ms(10);
+    }
+}
+
+void ESP8266_WebServer::Send404Reply(int linkID) {
+    sprintf(response, "HTTP/1.1 404 Not Found\r\nContent-Type: text/html\r\nContent-Length: 13\r\n\r\n404 Not Found");
+    sendResponse(linkID);
+}
+
+void ESP8266_WebServer::SendHTMLReply(int linkID, std::string reply) {
+    sprintf(response, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n%s", reply.length(), reply.c_str());
+    sendResponse(linkID);
+}