Fork of Farrukh's webserver. Tested on LPC1768 and STM32f401 but should work on almost any platform.
New version that has been tested on LPC1768 and STM32F401 Based on Farrukh's idea here: https://os.mbed.com/users/programmer5/code/STM32-ESP8266-WEBSERVER/
Enter your Wi-Fi SSID and PASSWORD and edit the espbaud to suit your ESP8266, Works fast and stable at 460800.
Use configuration program to reset and set up the ESP8266 if needed:
https://os.mbed.com/users/star297/code/ESP8266-configuaration-baudrate/
Limitations are no HTTPS.
Diff: main.cpp
- Revision:
- 2:d4c6bc0f2dc4
- Parent:
- 1:71ed1afbf344
- Child:
- 3:f7febfa77784
--- a/main.cpp Sun Feb 15 12:05:58 2015 +0000 +++ b/main.cpp Thu Feb 19 23:47:54 2015 +0000 @@ -6,53 +6,58 @@ Serial pc(USBTX, USBRX); Serial esp(PTE0, PTE1); // tx, rx +DS18B20 thermom(A0, DS18B20::RES_12_BIT); + // Standard Mbed LED definitions DigitalOut led1(LED_RED); // (PTB18) DigitalOut led2(LED_GREEN); // (PTB19) DigitalOut led3(LED_BLUE); // (PTD1) // Digital Out and In pins, can be configured to any suitable pin depending on Platform -DigitalOut Out1(PTC7); -DigitalOut Out2(PTC0); -DigitalOut Out3(PTC3); +DigitalOut Out1(D7); +DigitalOut Out2(D8); +DigitalOut Out3(D4); -DigitalIn In1(PTC12); -DigitalIn In2(PTC13); -DigitalIn In3(PTC16); +DigitalIn In1(A2); +DigitalIn In2(A3); +DigitalIn In3(A4); -AnalogIn BATin(PTC1); - -DS18B20 thermom(PTB0, DS18B20::RES_12_BIT); +PwmOut speaker(D5); +AnalogIn BATin(A1); Timer t1; Timer t2; struct tm t; -int buflen, DataRX, count, ended, servreq, timeout; -int bufl, ipdLen, linkID, weberror; +int buflen, DataRX, count, getcount, ended, servreq, timeout; +int bufl, ipdLen, linkID, weberror, webcounter; float temperature, AdcIn, Ht; float R1=100000, R2=10000; // resistor values to give a 10:1 reduction of measured AnalogIn voltage char Vcc[10]; char Temp[10]; char temp[10]; +char webcount[8]; +char lasthit[60]; char timebuf[30]; char type[16]; char type1[16]; char channel[2]; char snd[256]; char webdata[1024]; // This may need to be bigger depending on WEB browser used -char buf[2048]; // Currently using 1407 characters, Increase this if more web page data added +char buf[4096]; // Currently using 1407 characters, Increase this if more web page data added void SendCMD(),getreply(),ReadWebData(),startserver(),sendpage(),SendWEB(),sendcheck(); -void gettime(),gettemp(),getbattery(),setRTC(); +void gettime(),gettemp(),getbattery(),setRTC(),beep(); // manual set RTC values -int minute =58; // 0-59 -int hour =11; // 2-23 -int dayofmonth =15; // 1-31 +int minute =13; // 0-59 +int hour =15; // 2-23 +int dayofmonth =19; // 1-31 int month =2; // 1-12 int year =15; // last 2 digits + +int port =90; // set server port // Serial Interrupt read ESP data void callback() { @@ -65,38 +70,46 @@ pc.baud(115200); esp.baud(115200); // ESP8266 baudrate. if (time(NULL) < 1420070400) {setRTC();} - + beep(); startserver(); while(1){ if(DataRX==1){ ReadWebData(); + beep(); if (servreq == 1 && weberror == 0){sendpage();} pc.printf(" IPD Data:\r\n\n Link ID = %d,\r\n IPD Header Length = %d \r\n IPD Type = %s\r\n", linkID, ipdLen, type); pc.printf("\n\n HTTP Packet: \n\n%s\n", webdata); pc.printf(" Web Characters sent : %d\n\n", bufl); pc.printf(" -------------------------------------\n\n"); esp.attach(&callback); + strcpy(lasthit, timebuf); servreq=0; - } + } + if(t2.read()>900){startserver();} // restart server every 15 minutes after no activity in case of ESP lock out. } } // Static WEB page void sendpage() { - gettemp();getbattery();gettime(); -// WEB page data + gettemp();getbattery();gettime(); memset(buf, '\0', sizeof(buf)); - strcpy(buf, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nPragma: no-cache\r\n\r\n"); - strcat(buf, "<html><head><title>ESP8266 Mbed</title></head>\r\n"); - strcat(buf, "<body>\r\n"); - strcat(buf, "<h1>ESP8266 Mbed Web Controller</h1>\r\n"); - strcat(buf, "<br /><hr>\r\n"); + +// WEB page data + strcpy(buf, "<!DOCTYPE html>"); + strcat(buf, "<html><head><title>ESP8266 Mbed</title></head>"); + strcat(buf, "<body>"); + strcat(buf, "<div style=\"text-align:center; background-color:#F4F4F4; color:#00AEDB;\"><h1>ESP8266 Mbed Web Controller</h1>"); + strcat(buf, "Hit Count - "); + strcat(buf, webcount); + strcat(buf, "<br>Last Hit - "); + strcat(buf, lasthit); + strcat(buf, "</div><br /><hr>"); strcat(buf, "<h3>Mbed RTC Time - "); strcat(buf, timebuf); strcat(buf, "</h3>\r\n"); - strcat(buf, "<p><form method=\"POST\"><strong> Temperature: <input type=\"text\" size=4 value=\""); + strcat(buf, "<p><form method=\"POST\"><strong> Temperature: <input type=\"text\" size=6 value=\""); strcat(buf, Temp); strcat(buf, "\"> <sup>O</sup>C <form method=\"POST\"> <strong> Battery: <input type=\"text\" size=4 value=\""); strcat(buf, Vcc); @@ -122,20 +135,29 @@ if(In2==0){strcat(buf, "<br><input type=\"radio\" name=\"In2\" value=\"0\" > Digital In 2");} else{strcat(buf, "<br><input type=\"radio\" name=\"In2\" value=\"1\" checked> Digital In 2");} if(In3==0){strcat(buf, "<br><input type=\"radio\" name=\"In3\" value=\"0\" > Digital In 3");} - else{strcat(buf, "<br><input type=\"radio\" name=\"In3\" value=\"1\" checked> Digital In 3");} - strcat(buf, "</strong><p><input type=\"submit\"></form></span>"); - strcat(buf, "</body>\r\n</html>\r\n"); + else{strcat(buf, "<br><input type=\"radio\" name=\"In3\" value=\"1\" checked> Digital In 3");} + strcat(buf, "</strong><p><input type=\"submit\" value=\"send-refresh\" style=\"background: #3498db;"); + strcat(buf, "background-image:-webkit-linear-gradient(top, #3498db, #2980b9);"); + strcat(buf, "background-image:linear-gradient(to bottom, #3498db, #2980b9);"); + strcat(buf, "-webkit-border-radius:12;border-radius: 12px;font-family: Arial;color:#ffffff;font-size:20px;padding:"); + strcat(buf, "10px 20px 10px 20px; border:solid #103c57 3px;text-decoration: none;"); + strcat(buf, "background: #3cb0fd;"); + strcat(buf, "background-image:-webkit-linear-gradient(top,#3cb0fd,#1a5f8a);"); + strcat(buf, "background-image:linear-gradient(to bottom,#3cb0fd,#1a5f8a);"); + strcat(buf, "text-decoration:none;\"></form></span>"); strcat(buf, "<p/><h2>How to use:</h2><ul>"); strcat(buf, "<li>Select the Radio buttons to control the digital out pins.</li>"); - strcat(buf, "<li>Click 'Submit Query' to send.</li>"); - strcat(buf, "<li>Use the 'Submit Query' button to refresh the page.</li>"); + strcat(buf, "<li>Click 'Send-Refresh' to send.</li>"); + strcat(buf, "<li>Use the 'Send-Refresh' button to refresh the data.</li>"); strcat(buf, "</ul>"); + strcat(buf, "</body></html>"); // end of WEB page data bufl = strlen(buf); // get total page buffer length sprintf(snd,"AT+CIPSEND=%s,%d\r\n", channel, bufl); // send IPD link channel and buffer character length. SendCMD(); wait_ms(100); SendWEB(); // send web page + memset(buf, '\0', sizeof(buf)); sendcheck(); } @@ -148,7 +170,7 @@ getreply(); if (strstr(buf, "SEND OK") != NULL) {weberror=0;} // wait for valid SEND OK } - t2.stop(); + t2.reset(); if(weberror==1){ pc.printf("\n\n\n ++++++++++ WEB Connect Error, restarting ... ++++++++++\n\n"); NVIC_SystemReset();} @@ -178,8 +200,10 @@ sprintf(channel, "%d",linkID); if (strstr(webdata, "GET") != NULL) {servreq=1;} if (strstr(webdata, "POST") != NULL) {servreq=1;} + webcounter++; + sprintf(webcount, "%d",webcounter); } - else {strcpy(webdata, buf);weberror=1;} + else {strcpy(webdata, buf);weberror=1;} led3=1; } // Starts and restarts webserver if errors detected. @@ -192,19 +216,22 @@ pc.printf("++++++++++ Resetting ESP ++++++++++\r\n"); strcpy(snd,"AT+RST\r\n"); SendCMD(); - timeout=2000; + timeout=2000;getcount=336; getreply(); if (strstr(buf, "ready") != NULL) { pc.printf("\n++++++++++ Starting Server ++++++++++\r\n"); strcpy(snd, "AT+CIPMUX=1\r\n"); // set multiple connections. SendCMD(); - wait_ms(50); - strcpy(snd, "AT+CIPSERVER=1,80\r\n"); // set to port 80, you can change this to what you want. + timeout=500;getcount=10; + getreply(); + strcpy(snd, "AT+CIPSERVER=1,90\r\n"); + //sprintf(snd,"AT+CIPSERVER=1,%d\r\n", port); SendCMD(); - wait_ms(200); + timeout=500;getcount=10; + getreply(); pc.printf("\n Getting Server IP \r\n"); strcpy(snd, "AT+CIFSR\r\n"); - timeout=500; + timeout=1000;getcount=50; while(weberror==0){ SendCMD();getreply(); if (strstr(buf, "0.0.0.0") == NULL) {weberror=1;} // wait for valid IP @@ -212,7 +239,7 @@ pc.printf("\n Enter WEB address in your browser \r\n\n"); buf[strlen(buf) - 8] = '\0'; char* IP = buf + 5; - sprintf(snd," http://%s:80", IP); + sprintf(snd," http://%s:%d", IP, port); pc.printf(snd); while (esp.readable()){esp.getc();} buflen=200;count=0; @@ -224,7 +251,8 @@ else{ pc.printf("\n++++++++++ ESP8266 error, check power/connections ++++++++++\r\n"); while(1){} - } + } + t2.reset();t2.start();beep(); } // ESP Command data send void SendCMD() @@ -243,27 +271,25 @@ void getreply() { memset(buf, '\0', sizeof(buf)); - t1.start(); + t1.reset(); t1.start(); ended=0;count=0; - while(!ended) { + while(t1.read_ms()< timeout && count < getcount) { if(esp.readable()) { buf[count] = esp.getc();count++; } - if(t1.read_ms() > timeout) { - ended = 1;t1.stop();t1.reset(); - } - } + } + t1.stop(); } // Analog in example void getbattery() { AdcIn=BATin.read(); - Ht = (AdcIn*3.328*(R1+R2)/R2); // set the numeric to the exact MCU analog reference voltage for greater accuracy + Ht = (AdcIn*3.328f*(R1+R2)/R2); // set the numeric to the exact MCU analog reference voltage for greater accuracy sprintf(Vcc,"%2.3f",Ht); } // Temperature example void gettemp() -{ +{ temperature=thermom.GetTemperature(); // comment this out if no sensor connected //temperature = 21.357; // include for dummy value sprintf(Temp,"%3.3f",temperature); @@ -275,6 +301,14 @@ strftime(timebuf,50,"%H:%M:%S %a %d %b %y", localtime(&seconds)); } +void beep() +{ + speaker.period(1.0/2000); // 2000hz period + speaker = 0.5; //50% duty cycle - max volume + wait_ms(60); + speaker=0.0; // turn off audio +} + void setRTC() { t.tm_sec = (0); // 0-59