Clinton Lee Taylor / Mbed 2 deprecated WiFiLamp

LeeT WiFiLamp code and test

Dependencies:   ESP8266_WebServer mbed

Fork of WiFiLamp by Sebastian Schocke

main.cpp@1:f07afcffeb5a, 2014-11-20 (annotated)

Committer:
sschocke
Date:
Thu Nov 20 17:44:22 2014 +0000
Revision:
1:f07afcffeb5a
Parent:
0:d21e3e1c0a4b
Child:
4:4a502f72cbe3
Extracting URI and Pololu LED Intergation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sschocke 0:d21e3e1c0a4b 1 #include "mbed.h"
sschocke 1:f07afcffeb5a 2 #include "PololuLedStrip.h"
sschocke 0:d21e3e1c0a4b 3 #include <string>
sschocke 0:d21e3e1c0a4b 4 #define DEBUG_WIFI
sschocke 0:d21e3e1c0a4b 5
sschocke 1:f07afcffeb5a 6 PololuLedStrip ledStrip(PA_7);
sschocke 1:f07afcffeb5a 7
sschocke 1:f07afcffeb5a 8 #define LED_COUNT 4
sschocke 1:f07afcffeb5a 9 rgb_color colors[LED_COUNT];
sschocke 1:f07afcffeb5a 10
sschocke 0:d21e3e1c0a4b 11 DigitalOut wifiCHPD(D4);
sschocke 0:d21e3e1c0a4b 12 DigitalOut wifiReset(D9);
sschocke 0:d21e3e1c0a4b 13
sschocke 0:d21e3e1c0a4b 14 int wifiOn = 0;
sschocke 0:d21e3e1c0a4b 15
sschocke 0:d21e3e1c0a4b 16 Serial wifiSerial(D8,D2);
sschocke 0:d21e3e1c0a4b 17 Serial pc(USBTX,USBRX);
sschocke 0:d21e3e1c0a4b 18
sschocke 0:d21e3e1c0a4b 19 char buffer[1024];
sschocke 0:d21e3e1c0a4b 20 char reply[1024];
sschocke 0:d21e3e1c0a4b 21 char response[2048];
sschocke 1:f07afcffeb5a 22 char httpMethod[64];
sschocke 1:f07afcffeb5a 23 char httpURI[512];
sschocke 0:d21e3e1c0a4b 24 char* rxptr = buffer;
sschocke 0:d21e3e1c0a4b 25
sschocke 0:d21e3e1c0a4b 26 void rxint() {
sschocke 0:d21e3e1c0a4b 27 char c = wifiSerial.getc();
sschocke 0:d21e3e1c0a4b 28 if( wifiOn == 0 ) return;
sschocke 0:d21e3e1c0a4b 29 #ifdef DEBUG_WIFI
sschocke 0:d21e3e1c0a4b 30 pc.putc(c);
sschocke 0:d21e3e1c0a4b 31 #endif
sschocke 0:d21e3e1c0a4b 32 *rxptr = c;
sschocke 0:d21e3e1c0a4b 33 rxptr++;
sschocke 0:d21e3e1c0a4b 34 *rxptr = 0;
sschocke 0:d21e3e1c0a4b 35 }
sschocke 0:d21e3e1c0a4b 36
sschocke 0:d21e3e1c0a4b 37 void readBuffer() {
sschocke 0:d21e3e1c0a4b 38 strncpy(reply, buffer, 1024);
sschocke 0:d21e3e1c0a4b 39 rxptr = buffer;
sschocke 0:d21e3e1c0a4b 40 *rxptr = 0;
sschocke 0:d21e3e1c0a4b 41 }
sschocke 0:d21e3e1c0a4b 42
sschocke 0:d21e3e1c0a4b 43 short data_waiting(void)
sschocke 0:d21e3e1c0a4b 44 {
sschocke 0:d21e3e1c0a4b 45 char* ok = strstr(buffer, "OK\r\n");
sschocke 0:d21e3e1c0a4b 46 char* error = strstr(buffer, "ERROR\r\n");
sschocke 0:d21e3e1c0a4b 47 char* nochange = strstr(buffer, "no change\r\n");
sschocke 0:d21e3e1c0a4b 48
sschocke 0:d21e3e1c0a4b 49 if( (ok != NULL) || (error != NULL ) || (nochange != NULL ) )
sschocke 0:d21e3e1c0a4b 50 {
sschocke 0:d21e3e1c0a4b 51 return 1;
sschocke 0:d21e3e1c0a4b 52 }
sschocke 0:d21e3e1c0a4b 53
sschocke 0:d21e3e1c0a4b 54 return 0;
sschocke 0:d21e3e1c0a4b 55 }
sschocke 0:d21e3e1c0a4b 56
sschocke 0:d21e3e1c0a4b 57 short string_waiting(const char* str)
sschocke 0:d21e3e1c0a4b 58 {
sschocke 0:d21e3e1c0a4b 59 char* pr = strstr(buffer, str);
sschocke 0:d21e3e1c0a4b 60 char* error = strstr(buffer, "ERROR\r\n");
sschocke 0:d21e3e1c0a4b 61
sschocke 0:d21e3e1c0a4b 62 if( (pr != NULL) || (error != NULL ) )
sschocke 0:d21e3e1c0a4b 63 {
sschocke 0:d21e3e1c0a4b 64 return 1;
sschocke 0:d21e3e1c0a4b 65 }
sschocke 0:d21e3e1c0a4b 66
sschocke 0:d21e3e1c0a4b 67 return 0;
sschocke 0:d21e3e1c0a4b 68 }
sschocke 0:d21e3e1c0a4b 69
sschocke 0:d21e3e1c0a4b 70 int main() {
sschocke 0:d21e3e1c0a4b 71 pc.printf("WiFi Lamp Test...\r\n");
sschocke 1:f07afcffeb5a 72 colors[0].red = 0;
sschocke 1:f07afcffeb5a 73 colors[0].green = 0;
sschocke 1:f07afcffeb5a 74 colors[0].blue = 0;
sschocke 1:f07afcffeb5a 75 colors[1].red = 0;
sschocke 1:f07afcffeb5a 76 colors[1].green = 0;
sschocke 1:f07afcffeb5a 77 colors[1].blue = 0;
sschocke 1:f07afcffeb5a 78 colors[2].red = 0;
sschocke 1:f07afcffeb5a 79 colors[2].green = 0;
sschocke 1:f07afcffeb5a 80 colors[2].blue = 0;
sschocke 1:f07afcffeb5a 81 colors[3].red = 0;
sschocke 1:f07afcffeb5a 82 colors[3].green = 0;
sschocke 1:f07afcffeb5a 83 colors[3].blue = 0;
sschocke 0:d21e3e1c0a4b 84 wifiCHPD = 0;
sschocke 0:d21e3e1c0a4b 85 wifiReset = 0;
sschocke 0:d21e3e1c0a4b 86 wifiSerial.baud(9600);
sschocke 0:d21e3e1c0a4b 87 wifiSerial.attach(&rxint);
sschocke 1:f07afcffeb5a 88 ledStrip.write(colors, LED_COUNT);
sschocke 0:d21e3e1c0a4b 89 wait_ms(1000);
sschocke 0:d21e3e1c0a4b 90
sschocke 0:d21e3e1c0a4b 91 pc.printf("Powering WiFi...\r\n");
sschocke 0:d21e3e1c0a4b 92 wifiCHPD = 1;
sschocke 0:d21e3e1c0a4b 93 wait_ms(250);
sschocke 0:d21e3e1c0a4b 94 pc.printf("Hardware Reset WiFi...\r\n");
sschocke 0:d21e3e1c0a4b 95 wifiReset = 1;
sschocke 0:d21e3e1c0a4b 96 wifiOn = 1;
sschocke 0:d21e3e1c0a4b 97 readBuffer();
sschocke 0:d21e3e1c0a4b 98 while( string_waiting("\r\nready\r\n") == 0 ) {
sschocke 0:d21e3e1c0a4b 99 wait_ms(10);
sschocke 0:d21e3e1c0a4b 100 }
sschocke 0:d21e3e1c0a4b 101 readBuffer();
sschocke 0:d21e3e1c0a4b 102
sschocke 0:d21e3e1c0a4b 103 pc.printf("Starting WiFi...\r\n");
sschocke 0:d21e3e1c0a4b 104 pc.printf("Setting Operating Mode...");
sschocke 0:d21e3e1c0a4b 105 wifiSerial.printf("AT+CWMODE=3\r\n");
sschocke 0:d21e3e1c0a4b 106 while( data_waiting() == 0 ) {
sschocke 0:d21e3e1c0a4b 107 wait_ms(10);
sschocke 0:d21e3e1c0a4b 108 }
sschocke 0:d21e3e1c0a4b 109 readBuffer();
sschocke 0:d21e3e1c0a4b 110
sschocke 0:d21e3e1c0a4b 111 pc.printf("Done\r\nAccept Multiple connections...");
sschocke 0:d21e3e1c0a4b 112 wifiSerial.printf("AT+CIPMUX=1\r\n");
sschocke 0:d21e3e1c0a4b 113 while( data_waiting() == 0 ) {
sschocke 0:d21e3e1c0a4b 114 wait_ms(10);
sschocke 0:d21e3e1c0a4b 115 }
sschocke 0:d21e3e1c0a4b 116 readBuffer();
sschocke 0:d21e3e1c0a4b 117
sschocke 0:d21e3e1c0a4b 118 pc.printf("Done\r\nStarting Web Server...");
sschocke 0:d21e3e1c0a4b 119 wifiSerial.printf("AT+CIPSERVER=1,80\r\n");
sschocke 0:d21e3e1c0a4b 120 while( data_waiting() == 0 ) {
sschocke 0:d21e3e1c0a4b 121 wait_ms(10);
sschocke 0:d21e3e1c0a4b 122 }
sschocke 0:d21e3e1c0a4b 123 readBuffer();
sschocke 0:d21e3e1c0a4b 124
sschocke 0:d21e3e1c0a4b 125 pc.printf("Done\r\n");
sschocke 0:d21e3e1c0a4b 126
sschocke 0:d21e3e1c0a4b 127 while(true) {
sschocke 0:d21e3e1c0a4b 128 if( (string_waiting("+IPD") == 1) && (string_waiting("\r\nOK\r\n") == 1) ) {
sschocke 0:d21e3e1c0a4b 129 pc.printf("\r\nGot Data\r\n");
sschocke 0:d21e3e1c0a4b 130 readBuffer();
sschocke 0:d21e3e1c0a4b 131
sschocke 0:d21e3e1c0a4b 132 char* ipdPacket = strstr(reply, "+IPD");
sschocke 0:d21e3e1c0a4b 133 int linkID, bytesRecv, ipdLen;
sschocke 0:d21e3e1c0a4b 134 int numMatched = sscanf(ipdPacket,"+IPD,%d,%d:%n", &linkID, &bytesRecv, &ipdLen);
sschocke 0:d21e3e1c0a4b 135 if( numMatched != 2 ) {
sschocke 0:d21e3e1c0a4b 136 pc.printf("IPD ERROR : Matched %d, LinkID=%d, BytesRecv=%d, IPD Header Len=%d\r\n", numMatched, linkID, bytesRecv, ipdLen);
sschocke 0:d21e3e1c0a4b 137 continue;
sschocke 0:d21e3e1c0a4b 138 }
sschocke 0:d21e3e1c0a4b 139
sschocke 0:d21e3e1c0a4b 140 pc.printf("IPD Data: LinkID=%d, BytesRecv=%d, IPD Header Len=%d\r\n", linkID, bytesRecv, ipdLen);
sschocke 0:d21e3e1c0a4b 141 if( strstr(ipdPacket, "HTTP") != NULL ) {
sschocke 0:d21e3e1c0a4b 142 pc.printf("Got HTTP Request\r\n");
sschocke 0:d21e3e1c0a4b 143 char* httpPacket = ipdPacket + ipdLen;
sschocke 1:f07afcffeb5a 144 //pc.printf("HTTP Packet: %s\r\n", httpPacket);
sschocke 1:f07afcffeb5a 145
sschocke 1:f07afcffeb5a 146 numMatched = sscanf(httpPacket, "%s %s HTTP/%*c.%*c", httpMethod, httpURI);
sschocke 1:f07afcffeb5a 147 if( numMatched != 2 ) {
sschocke 1:f07afcffeb5a 148 pc.printf("HTTP ERROR : Matched %d, Method=%s, URI=%s\r\n", numMatched, httpMethod, httpURI);
sschocke 1:f07afcffeb5a 149 continue;
sschocke 1:f07afcffeb5a 150 }
sschocke 1:f07afcffeb5a 151 pc.printf("HTTP %s %s\r\n", httpMethod, httpURI);
sschocke 1:f07afcffeb5a 152
sschocke 1:f07afcffeb5a 153 std::string method = httpMethod;
sschocke 1:f07afcffeb5a 154 std::string uri = httpURI;
sschocke 0:d21e3e1c0a4b 155
sschocke 1:f07afcffeb5a 156 std::string httpReply;
sschocke 1:f07afcffeb5a 157 std::string httpReplyPacket;
sschocke 1:f07afcffeb5a 158 if( uri == "/" ) {
sschocke 1:f07afcffeb5a 159 httpReply = "<html><head><title>WiFi Lamp</title></head><body><h1>The WiFi Lamp is alive(<a href='/red'>Red</a>)</h1></body></html>";
sschocke 1:f07afcffeb5a 160 httpReplyPacket = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n%s";
sschocke 1:f07afcffeb5a 161 colors[0].red = 0;
sschocke 1:f07afcffeb5a 162 colors[0].green = 0;
sschocke 1:f07afcffeb5a 163 colors[0].blue = 0;
sschocke 1:f07afcffeb5a 164 ledStrip.write(colors, LED_COUNT);
sschocke 1:f07afcffeb5a 165 } else if( uri == "/red" ) {
sschocke 1:f07afcffeb5a 166 httpReply = "<html><head><title>WiFi Lamp</title></head><body><h1>The WiFi Lamp(Red) is alive(<a href='/'>Off</a>)</h1></body></html>";
sschocke 1:f07afcffeb5a 167 httpReplyPacket = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n%s";
sschocke 1:f07afcffeb5a 168 colors[0].red = 64;
sschocke 1:f07afcffeb5a 169 colors[0].green = 0;
sschocke 1:f07afcffeb5a 170 colors[0].blue = 0;
sschocke 1:f07afcffeb5a 171 ledStrip.write(colors, LED_COUNT);
sschocke 1:f07afcffeb5a 172 } else {
sschocke 1:f07afcffeb5a 173 httpReply = "404 Not Found";
sschocke 1:f07afcffeb5a 174 httpReplyPacket = "HTTP/1.1 404 Not Found\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n%s";
sschocke 1:f07afcffeb5a 175 }
sschocke 0:d21e3e1c0a4b 176
sschocke 0:d21e3e1c0a4b 177 sprintf(response, httpReplyPacket.c_str(), httpReply.length(), httpReply.c_str());
sschocke 0:d21e3e1c0a4b 178 int bytes = strlen(response);
sschocke 0:d21e3e1c0a4b 179 pc.printf("HTTP Reply Packet(%d bytes): %s\r\n", bytes, response);
sschocke 0:d21e3e1c0a4b 180 wifiSerial.printf("AT+CIPSEND=%d,%d\r\n", linkID, bytes);
sschocke 0:d21e3e1c0a4b 181 wait_ms(500);
sschocke 0:d21e3e1c0a4b 182 if( (string_waiting("\r\n>") == 1) ) {
sschocke 0:d21e3e1c0a4b 183 wifiSerial.printf(response);
sschocke 0:d21e3e1c0a4b 184 }
sschocke 0:d21e3e1c0a4b 185 while( string_waiting("\r\nSEND OK\r\n") == 0 ) {
sschocke 0:d21e3e1c0a4b 186 wait_ms(10);
sschocke 0:d21e3e1c0a4b 187 }
sschocke 0:d21e3e1c0a4b 188 pc.printf("\r\nHTTP Reply Sent\r\n");
sschocke 0:d21e3e1c0a4b 189 }
sschocke 0:d21e3e1c0a4b 190 }
sschocke 1:f07afcffeb5a 191
sschocke 0:d21e3e1c0a4b 192 wait_ms(10);
sschocke 0:d21e3e1c0a4b 193 }
sschocke 0:d21e3e1c0a4b 194 }