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Ejemplo de domotica con ESP8266
main.cpp
- Committer:
- star297
- Date:
- 2015-02-15
- Revision:
- 1:71ed1afbf344
- Parent:
- 0:e2a155f50119
- Child:
- 2:d4c6bc0f2dc4
File content as of revision 1:71ed1afbf344:
// ESP8266 Static page WEB server to control Mbed #include "mbed.h" #include "DS18B20.h" Serial pc(USBTX, USBRX); Serial esp(PTE0, PTE1); // tx, rx // 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); DigitalIn In1(PTC12); DigitalIn In2(PTC13); DigitalIn In3(PTC16); AnalogIn BATin(PTC1); DS18B20 thermom(PTB0, DS18B20::RES_12_BIT); Timer t1; Timer t2; struct tm t; int buflen, DataRX, count, ended, servreq, timeout; int bufl, ipdLen, linkID, weberror; 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 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 void SendCMD(),getreply(),ReadWebData(),startserver(),sendpage(),SendWEB(),sendcheck(); void gettime(),gettemp(),getbattery(),setRTC(); // manual set RTC values int minute =58; // 0-59 int hour =11; // 2-23 int dayofmonth =15; // 1-31 int month =2; // 1-12 int year =15; // last 2 digits // Serial Interrupt read ESP data void callback() { while (esp.readable()) {buf[count] = esp.getc();count++;} if(strlen(buf)>buflen){DataRX=1;} } int main() { led1=1,led2=1,led3=1; pc.baud(115200); esp.baud(115200); // ESP8266 baudrate. if (time(NULL) < 1420070400) {setRTC();} startserver(); while(1){ if(DataRX==1){ ReadWebData(); 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); servreq=0; } } } // Static WEB page void sendpage() { gettemp();getbattery();gettime(); // WEB page data 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"); 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, Temp); strcat(buf, "\"> <sup>O</sup>C <form method=\"POST\"> <strong> Battery: <input type=\"text\" size=4 value=\""); strcat(buf, Vcc); strcat(buf, "\"> </sup>V"); if(led1==1){strcat(buf, "<p><input type=\"radio\" name=\"led1\" value=\"0\" checked> Red LED off"); strcat(buf, "<br><input type=\"radio\" name=\"led1\" value=\"1\" > Red LED on");} else{strcat(buf, "<p><input type=\"radio\" name=\"led1\" value=\"0\" > Red LED off"); strcat(buf, "<br><input type=\"radio\" name=\"led1\" value=\"1\" checked> Red LED on");} if(Out1==0){strcat(buf, "<p><input type=\"radio\" name=\"Out1\" value=\"0\" checked> Digital Out 1 off"); strcat(buf, "<br><input type=\"radio\" name=\"Out1\" value=\"1\" > Digital Out 1 on");} else{strcat(buf, "<p><input type=\"radio\" name=\"Out1\" value=\"0\" > Digital Out 1 off"); strcat(buf, "<br><input type=\"radio\" name=\"Out1\" value=\"1\" checked> Digital Out 1 on");} if(Out2==0){strcat(buf, "<p><input type=\"radio\" name=\"Out2\" value=\"0\" checked> Digital Out 2 off"); strcat(buf, "<br><input type=\"radio\" name=\"Out2\" value=\"1\" > Digital Out 2 on");} else{strcat(buf, "<p><input type=\"radio\" name=\"Out2\" value=\"0\" > Digital Out 2 off"); strcat(buf, "<br><input type=\"radio\" name=\"Out2\" value=\"1\" checked> Digital Out 2 on");} if(Out3==0){strcat(buf, "<p><input type=\"radio\" name=\"Out3\" value=\"0\" checked> Digital Out 3 off"); strcat(buf, "<br><input type=\"radio\" name=\"Out3\" value=\"1\" > Digital Out 3 on");} else{strcat(buf, "<p><input type=\"radio\" name=\"Out3\" value=\"0\" > Digital Out 3 off"); strcat(buf, "<br><input type=\"radio\" name=\"Out3\" value=\"1\" checked> Digital Out 3 on");} if(In1==0){strcat(buf, "<p><input type=\"radio\" name=\"In1\" value=\"0\" > Digital In 1");} else{strcat(buf, "<p><input type=\"radio\" name=\"In1\" value=\"1\" checked> Digital In 1");} 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"); 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, "</ul>"); // 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 sendcheck(); } // wait for ESP "SEND OK" reply, then close IP to load web page, if lock out, system fully restarts void sendcheck() { timeout=200; weberror=1;t2.reset();t2.start(); while(weberror==1 && t2.read() <10){ getreply(); if (strstr(buf, "SEND OK") != NULL) {weberror=0;} // wait for valid SEND OK } t2.stop(); if(weberror==1){ pc.printf("\n\n\n ++++++++++ WEB Connect Error, restarting ... ++++++++++\n\n"); NVIC_SystemReset();} strcpy(snd, "AT+CIPCLOSE=0\r\n"); SendCMD(); } // Reads and processes GET and POST web data void ReadWebData() { wait_ms(200); led3=0; count=0;DataRX=0;weberror=0; esp.attach(NULL); int x = strcspn (buf,"+"); if(x){ strcpy(webdata, buf + x);weberror=0; int numMatched = sscanf(webdata,"+IPD,%d,%d:%s", &linkID, &ipdLen, type); if( strstr(webdata, "led1=1") != NULL ) {led1=0;} if( strstr(webdata, "led1=0") != NULL ) {led1=1;} if( strstr(webdata, "Out1=1") != NULL ) {Out1=1;} if( strstr(webdata, "Out1=0") != NULL ) {Out1=0;} if( strstr(webdata, "Out2=1") != NULL ) {Out2=1;} if( strstr(webdata, "Out2=0") != NULL ) {Out2=0;} if( strstr(webdata, "Out3=1") != NULL ) {Out3=1;} if( strstr(webdata, "Out3=0") != NULL ) {Out3=0;} sprintf(channel, "%d",linkID); if (strstr(webdata, "GET") != NULL) {servreq=1;} if (strstr(webdata, "POST") != NULL) {servreq=1;} } else {strcpy(webdata, buf);weberror=1;} led3=1; } // Starts and restarts webserver if errors detected. void startserver() { esp.attach(NULL); wait(1); gettime(); pc.printf("\n\n RTC time %s\r\n\n",timebuf); pc.printf("++++++++++ Resetting ESP ++++++++++\r\n"); strcpy(snd,"AT+RST\r\n"); SendCMD(); timeout=2000; 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. SendCMD(); wait_ms(200); pc.printf("\n Getting Server IP \r\n"); strcpy(snd, "AT+CIFSR\r\n"); timeout=500; while(weberror==0){ SendCMD();getreply(); if (strstr(buf, "0.0.0.0") == NULL) {weberror=1;} // wait for valid IP } 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); pc.printf(snd); while (esp.readable()){esp.getc();} buflen=200;count=0; memset(buf, '\0', sizeof(buf)); led2=0;wait(2);led2=1; pc.printf("\n\n++++++++++ Ready ++++++++++\r\n\n"); esp.attach(&callback); } else{ pc.printf("\n++++++++++ ESP8266 error, check power/connections ++++++++++\r\n"); while(1){} } } // ESP Command data send void SendCMD() { esp.printf("%s", snd); } // Large WEB buffer data send void SendWEB() { int i=0; if(esp.writeable()) { while(buf[i]!='\0') {esp.putc(buf[i]);i++;} } } // Get Cammand and ESP status replies void getreply() { memset(buf, '\0', sizeof(buf)); t1.start(); ended=0;count=0; while(!ended) { if(esp.readable()) { buf[count] = esp.getc();count++; } if(t1.read_ms() > timeout) { ended = 1;t1.stop();t1.reset(); } } } // 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 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); } // Get RTC time void gettime() { time_t seconds = time(NULL); strftime(timebuf,50,"%H:%M:%S %a %d %b %y", localtime(&seconds)); } void setRTC() { t.tm_sec = (0); // 0-59 t.tm_min = (minute); // 0-59 t.tm_hour = (hour); // 0-23 t.tm_mday = (dayofmonth); // 1-31 t.tm_mon = (month-1); // 0-11 "0" = Jan, -1 added for Mbed RCT clock format t.tm_year = ((year)+100); // year since 1900, current DCF year + 100 + 1900 = correct year set_time(mktime(&t)); // set RTC clock }