Clinton Lee Taylor / Mbed 2 deprecated WiFiLamp

LeeT WiFiLamp code and test

Dependencies:   ESP8266_WebServer mbed

Fork of WiFiLamp by Sebastian Schocke

main.cpp@0:d21e3e1c0a4b, 2014-11-16 (annotated)

Committer:
sschocke
Date:
Sun Nov 16 13:28:19 2014 +0000
Revision:
0:d21e3e1c0a4b
Child:
1:f07afcffeb5a
Initial Commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sschocke 0:d21e3e1c0a4b 1 #include "mbed.h"
sschocke 0:d21e3e1c0a4b 2 #include <string>
sschocke 0:d21e3e1c0a4b 3 #define DEBUG_WIFI
sschocke 0:d21e3e1c0a4b 4
sschocke 0:d21e3e1c0a4b 5 DigitalOut wifiCHPD(D4);
sschocke 0:d21e3e1c0a4b 6 DigitalOut wifiReset(D9);
sschocke 0:d21e3e1c0a4b 7
sschocke 0:d21e3e1c0a4b 8 int wifiOn = 0;
sschocke 0:d21e3e1c0a4b 9
sschocke 0:d21e3e1c0a4b 10 Serial wifiSerial(D8,D2);
sschocke 0:d21e3e1c0a4b 11 Serial pc(USBTX,USBRX);
sschocke 0:d21e3e1c0a4b 12
sschocke 0:d21e3e1c0a4b 13 char buffer[1024];
sschocke 0:d21e3e1c0a4b 14 char reply[1024];
sschocke 0:d21e3e1c0a4b 15 char response[2048];
sschocke 0:d21e3e1c0a4b 16 char* rxptr = buffer;
sschocke 0:d21e3e1c0a4b 17
sschocke 0:d21e3e1c0a4b 18 void rxint() {
sschocke 0:d21e3e1c0a4b 19 char c = wifiSerial.getc();
sschocke 0:d21e3e1c0a4b 20 if( wifiOn == 0 ) return;
sschocke 0:d21e3e1c0a4b 21 #ifdef DEBUG_WIFI
sschocke 0:d21e3e1c0a4b 22 pc.putc(c);
sschocke 0:d21e3e1c0a4b 23 #endif
sschocke 0:d21e3e1c0a4b 24 *rxptr = c;
sschocke 0:d21e3e1c0a4b 25 rxptr++;
sschocke 0:d21e3e1c0a4b 26 *rxptr = 0;
sschocke 0:d21e3e1c0a4b 27 }
sschocke 0:d21e3e1c0a4b 28
sschocke 0:d21e3e1c0a4b 29 void readBuffer() {
sschocke 0:d21e3e1c0a4b 30 strncpy(reply, buffer, 1024);
sschocke 0:d21e3e1c0a4b 31 rxptr = buffer;
sschocke 0:d21e3e1c0a4b 32 *rxptr = 0;
sschocke 0:d21e3e1c0a4b 33 }
sschocke 0:d21e3e1c0a4b 34
sschocke 0:d21e3e1c0a4b 35 short data_waiting(void)
sschocke 0:d21e3e1c0a4b 36 {
sschocke 0:d21e3e1c0a4b 37 char* ok = strstr(buffer, "OK\r\n");
sschocke 0:d21e3e1c0a4b 38 char* error = strstr(buffer, "ERROR\r\n");
sschocke 0:d21e3e1c0a4b 39 char* nochange = strstr(buffer, "no change\r\n");
sschocke 0:d21e3e1c0a4b 40
sschocke 0:d21e3e1c0a4b 41 if( (ok != NULL) || (error != NULL ) || (nochange != NULL ) )
sschocke 0:d21e3e1c0a4b 42 {
sschocke 0:d21e3e1c0a4b 43 return 1;
sschocke 0:d21e3e1c0a4b 44 }
sschocke 0:d21e3e1c0a4b 45
sschocke 0:d21e3e1c0a4b 46 return 0;
sschocke 0:d21e3e1c0a4b 47 }
sschocke 0:d21e3e1c0a4b 48
sschocke 0:d21e3e1c0a4b 49 short string_waiting(const char* str)
sschocke 0:d21e3e1c0a4b 50 {
sschocke 0:d21e3e1c0a4b 51 char* pr = strstr(buffer, str);
sschocke 0:d21e3e1c0a4b 52 char* error = strstr(buffer, "ERROR\r\n");
sschocke 0:d21e3e1c0a4b 53
sschocke 0:d21e3e1c0a4b 54 if( (pr != NULL) || (error != NULL ) )
sschocke 0:d21e3e1c0a4b 55 {
sschocke 0:d21e3e1c0a4b 56 return 1;
sschocke 0:d21e3e1c0a4b 57 }
sschocke 0:d21e3e1c0a4b 58
sschocke 0:d21e3e1c0a4b 59 return 0;
sschocke 0:d21e3e1c0a4b 60 }
sschocke 0:d21e3e1c0a4b 61
sschocke 0:d21e3e1c0a4b 62 int main() {
sschocke 0:d21e3e1c0a4b 63 pc.printf("WiFi Lamp Test...\r\n");
sschocke 0:d21e3e1c0a4b 64 wifiCHPD = 0;
sschocke 0:d21e3e1c0a4b 65 wifiReset = 0;
sschocke 0:d21e3e1c0a4b 66 wifiSerial.baud(9600);
sschocke 0:d21e3e1c0a4b 67 wifiSerial.attach(&rxint);
sschocke 0:d21e3e1c0a4b 68 wait_ms(1000);
sschocke 0:d21e3e1c0a4b 69
sschocke 0:d21e3e1c0a4b 70 pc.printf("Powering WiFi...\r\n");
sschocke 0:d21e3e1c0a4b 71 wifiCHPD = 1;
sschocke 0:d21e3e1c0a4b 72 wait_ms(250);
sschocke 0:d21e3e1c0a4b 73 pc.printf("Hardware Reset WiFi...\r\n");
sschocke 0:d21e3e1c0a4b 74 wifiReset = 1;
sschocke 0:d21e3e1c0a4b 75 wifiOn = 1;
sschocke 0:d21e3e1c0a4b 76 readBuffer();
sschocke 0:d21e3e1c0a4b 77 while( string_waiting("\r\nready\r\n") == 0 ) {
sschocke 0:d21e3e1c0a4b 78 wait_ms(10);
sschocke 0:d21e3e1c0a4b 79 }
sschocke 0:d21e3e1c0a4b 80 readBuffer();
sschocke 0:d21e3e1c0a4b 81
sschocke 0:d21e3e1c0a4b 82 pc.printf("Starting WiFi...\r\n");
sschocke 0:d21e3e1c0a4b 83 pc.printf("Setting Operating Mode...");
sschocke 0:d21e3e1c0a4b 84 wifiSerial.printf("AT+CWMODE=3\r\n");
sschocke 0:d21e3e1c0a4b 85 while( data_waiting() == 0 ) {
sschocke 0:d21e3e1c0a4b 86 wait_ms(10);
sschocke 0:d21e3e1c0a4b 87 }
sschocke 0:d21e3e1c0a4b 88 readBuffer();
sschocke 0:d21e3e1c0a4b 89
sschocke 0:d21e3e1c0a4b 90 pc.printf("Done\r\nAccept Multiple connections...");
sschocke 0:d21e3e1c0a4b 91 wifiSerial.printf("AT+CIPMUX=1\r\n");
sschocke 0:d21e3e1c0a4b 92 while( data_waiting() == 0 ) {
sschocke 0:d21e3e1c0a4b 93 wait_ms(10);
sschocke 0:d21e3e1c0a4b 94 }
sschocke 0:d21e3e1c0a4b 95 readBuffer();
sschocke 0:d21e3e1c0a4b 96
sschocke 0:d21e3e1c0a4b 97 pc.printf("Done\r\nStarting Web Server...");
sschocke 0:d21e3e1c0a4b 98 wifiSerial.printf("AT+CIPSERVER=1,80\r\n");
sschocke 0:d21e3e1c0a4b 99 while( data_waiting() == 0 ) {
sschocke 0:d21e3e1c0a4b 100 wait_ms(10);
sschocke 0:d21e3e1c0a4b 101 }
sschocke 0:d21e3e1c0a4b 102 readBuffer();
sschocke 0:d21e3e1c0a4b 103
sschocke 0:d21e3e1c0a4b 104 pc.printf("Done\r\n");
sschocke 0:d21e3e1c0a4b 105
sschocke 0:d21e3e1c0a4b 106 while(true) {
sschocke 0:d21e3e1c0a4b 107 if( (string_waiting("+IPD") == 1) && (string_waiting("\r\nOK\r\n") == 1) ) {
sschocke 0:d21e3e1c0a4b 108 pc.printf("\r\nGot Data\r\n");
sschocke 0:d21e3e1c0a4b 109 readBuffer();
sschocke 0:d21e3e1c0a4b 110
sschocke 0:d21e3e1c0a4b 111 char* ipdPacket = strstr(reply, "+IPD");
sschocke 0:d21e3e1c0a4b 112 int linkID, bytesRecv, ipdLen;
sschocke 0:d21e3e1c0a4b 113 int numMatched = sscanf(ipdPacket,"+IPD,%d,%d:%n", &linkID, &bytesRecv, &ipdLen);
sschocke 0:d21e3e1c0a4b 114 if( numMatched != 2 ) {
sschocke 0:d21e3e1c0a4b 115 pc.printf("IPD ERROR : Matched %d, LinkID=%d, BytesRecv=%d, IPD Header Len=%d\r\n", numMatched, linkID, bytesRecv, ipdLen);
sschocke 0:d21e3e1c0a4b 116 continue;
sschocke 0:d21e3e1c0a4b 117 }
sschocke 0:d21e3e1c0a4b 118
sschocke 0:d21e3e1c0a4b 119 pc.printf("IPD Data: LinkID=%d, BytesRecv=%d, IPD Header Len=%d\r\n", linkID, bytesRecv, ipdLen);
sschocke 0:d21e3e1c0a4b 120 if( strstr(ipdPacket, "HTTP") != NULL ) {
sschocke 0:d21e3e1c0a4b 121 pc.printf("Got HTTP Request\r\n");
sschocke 0:d21e3e1c0a4b 122 char* httpPacket = ipdPacket + ipdLen;
sschocke 0:d21e3e1c0a4b 123 pc.printf("HTTP Packet: %s\r\n", httpPacket);
sschocke 0:d21e3e1c0a4b 124
sschocke 0:d21e3e1c0a4b 125 std::string httpReply = "<html><head><title>WiFi Lamp</title></head><body><h1>The WiFi Lamp is alive</h1></body></html>";
sschocke 0:d21e3e1c0a4b 126 std::string httpReplyPacket = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n%s";
sschocke 0:d21e3e1c0a4b 127
sschocke 0:d21e3e1c0a4b 128 sprintf(response, httpReplyPacket.c_str(), httpReply.length(), httpReply.c_str());
sschocke 0:d21e3e1c0a4b 129 int bytes = strlen(response);
sschocke 0:d21e3e1c0a4b 130 pc.printf("HTTP Reply Packet(%d bytes): %s\r\n", bytes, response);
sschocke 0:d21e3e1c0a4b 131 wifiSerial.printf("AT+CIPSEND=%d,%d\r\n", linkID, bytes);
sschocke 0:d21e3e1c0a4b 132 wait_ms(500);
sschocke 0:d21e3e1c0a4b 133 if( (string_waiting("\r\n>") == 1) ) {
sschocke 0:d21e3e1c0a4b 134 wifiSerial.printf(response);
sschocke 0:d21e3e1c0a4b 135 }
sschocke 0:d21e3e1c0a4b 136 while( string_waiting("\r\nSEND OK\r\n") == 0 ) {
sschocke 0:d21e3e1c0a4b 137 wait_ms(10);
sschocke 0:d21e3e1c0a4b 138 }
sschocke 0:d21e3e1c0a4b 139 pc.printf("\r\nHTTP Reply Sent\r\n");
sschocke 0:d21e3e1c0a4b 140 }
sschocke 0:d21e3e1c0a4b 141 }
sschocke 0:d21e3e1c0a4b 142 wait_ms(10);
sschocke 0:d21e3e1c0a4b 143 }
sschocke 0:d21e3e1c0a4b 144 }