Diff: main.cpp

Revision:

0:824af42f88ff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri May 06 13:49:18 2016 +0000
@@ -0,0 +1,231 @@
+#include "mbed.h"
+#include "DHT.h"
+
+Serial pc(USBTX, USBRX);
+Serial esp(PTC17, PTC16); //FRDM K64F 
+
+DHT sensor(D4, DHT11); 
+DigitalIn pirInputPin(D2); 
+
+Timer t1;
+
+int  count,ended,timeout,getcount,replycount;
+char replybuff[1024];
+char cmdbuff[255];
+
+void SendCMD(),getreply(),getMotionSensor(),gettemp(), ESPconfig();
+void sendUbidotsData(int sensor, float value);
+
+
+int main()
+{
+    pc.baud(115200);  
+    esp.baud(115200);   
+    ESPconfig();
+    while(1){
+    wait(2);
+    gettemp();
+    wait(2);
+    getMotionSensor();
+    }
+    
+}
+
+
+
+//configuration of esp8266
+void ESPconfig()
+{
+    timeout=1000;getcount=600;
+    wait(1);
+    strcpy(cmdbuff,"AT\r\n");
+    SendCMD();
+    timeout=1;
+    getreply();
+    wait(1);
+    
+    pc.printf("Reset & get Firmware\r\n");
+    strcpy(cmdbuff,"AT+RST\r\n");
+    SendCMD();
+    timeout=5;
+    getreply();
+    pc.printf(replybuff);
+
+    wait(2);
+
+    pc.printf("\nGet Version\r\n");
+    strcpy(cmdbuff,"AT+GMR\r\n");
+    SendCMD();
+    timeout=4;
+    getreply();
+    pc.printf(replybuff);
+
+    wait(3);
+
+    // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
+    pc.printf("\nSetting Mode\r\n");
+    strcpy(cmdbuff, "AT+CWMODE=1\r\n");
+    SendCMD();
+    timeout=4;
+    getreply();
+    pc.printf(replybuff);
+
+    wait(2);
+
+    // set CIPMUX to 0=Single,1=Multi
+    pc.printf("\nSetting Connection Mode\r\n");
+    strcpy(cmdbuff, "AT+CIPMUX=1\r\n");
+    SendCMD();
+    timeout=4;
+    getreply();
+    pc.printf(replybuff);
+
+   
+    wait(2);
+
+    pc.printf("\nConnecting to AP\r\n");
+    pc.printf("ssid = %s   pwd = %s\r\n","ssid","password");
+    strcpy(cmdbuff, "AT+CWJAP=\"");
+    strcat(cmdbuff, "galaxy");
+    strcat(cmdbuff, "\",\"");
+    strcat(cmdbuff, "123456789");
+    strcat(cmdbuff, "\"\r\n");
+    SendCMD();
+    timeout=10;
+    getreply();
+    pc.printf(replybuff);
+
+    wait(5);
+
+   
+
+    pc.printf("\nGet Connection Status\r\n");
+    strcpy(cmdbuff, "AT+CIPSTATUS\r\n");
+    SendCMD();
+    timeout=5;
+    getreply();
+    pc.printf(replybuff);
+    
+    wait(1);
+
+}
+//temperature sensor reads the temp
+void gettemp()
+{   
+float temperature = 0.0f;
+   int error = 0;
+    
+    wait(2.0f); 
+    error = sensor.readData(); 
+    if (error == 0) { 
+        temperature = sensor.ReadTemperature(FARENHEIT);
+        pc.printf("Temperature in Farenheit %3.2f\n",temperature);   
+    }
+    else{
+        pc.printf("Error: %d\n",error);
+    }
+   
+   sendUbidotsData(2, temperature); 
+   wait(2);            
+}
+
+//pir sensor detects if there is motion
+void getMotionSensor(){
+    pc.printf("get motion sensor");
+    int val = pirInputPin.read(); // Continuously Read output of PIR sensor on D2 pin
+     if (val==0) // val=0 means there is a motion 
+     {
+        for(int i =0;i<3 && val==0;i++)
+        {
+            val = pirInputPin.read();
+            wait(1);
+        }
+        if (val==0)
+          sendUbidotsData(1, 1.0);  
+    }
+     else
+        wait(2);
+}
+
+//post dat ato ubidots website
+//pir=1,temp=2
+void sendUbidotsData(int sensor, float value){
+    char postData[255];
+    char valueChar[10];
+    char valLenChar[7];
+    int valLength = sprintf(valueChar,"%3.1f",value);
+    valLength = valLength+13;
+    sprintf(valLenChar,"%ld",valLength);
+    
+   if(sensor == 1)
+      strcpy(postData, "POST /api/v1.6/variables/variable_id1/values/?token=token_id HTTP/1.1\r\n");
+   else{
+    strcpy(postData, "POST /api/v1.6/variables/variable_id2/values/?token=token_id HTTP/1.1\r\n");
+    }
+    strcat(postData, "Host: things.ubidots.com\r\n");
+    strcat(postData, "Content-Type: application/json\r\n");
+    strcat(postData, "Content-Length: ");
+    strcat(postData, valLenChar);
+    strcat(postData, "\r\n\r\n");
+    strcat(postData, "{\"value\": \"");
+    strcat(postData, valueChar);
+    strcat(postData, "\"}\r\n\r\n");
+    
+    timeout=1000;getcount=600;
+    
+    pc.printf("\nStart TCP\r\n");
+    strcpy(cmdbuff, "AT+CIPSTART=4,\"TCP\",\"things.ubidots.com\",80\r\n");
+    SendCMD();
+    timeout=5;
+    getreply();
+    pc.printf(replybuff);
+    
+    wait(5);
+
+    pc.printf("\nConnecting\r\n");
+    sprintf(cmdbuff, "AT+CIPSEND=4,%d\r\n",strlen(postData));//strlen(postData)
+    SendCMD();
+    wait(3);
+    timeout=5;
+    getreply();
+    pc.printf(replybuff);
+    
+    wait(2);
+
+    pc.printf("\nPOST Request\r\n");
+    strcpy(cmdbuff, postData);
+    SendCMD();
+    wait(7);
+    timeout=5;
+    getreply();
+    pc.printf(replybuff);
+    
+    wait(5);
+    pc.printf("\nClose TCP\r\n");
+    strcpy(cmdbuff, "AT+CIPCLOSE\r\n");
+    SendCMD();
+    timeout=5;
+    getreply();
+    pc.printf(replybuff);
+
+    wait(2);    
+}
+
+
+// ESP Command data send
+void SendCMD()
+{
+    esp.printf("%s", cmdbuff);      
+}  
+
+void getreply()
+{    
+    memset(replybuff, '\0', sizeof(replybuff));
+    t1.reset(); t1.start();replycount=0;
+    while(t1.read_ms()< timeout && replycount < getcount) {
+        if(esp.readable()) {
+            replybuff[replycount] = esp.getc();replycount++;
+            }
+        }
+    t1.stop();      
+}
\ No newline at end of file