initial commit

SDI12ToHSL/SDI12ToHSL.ino

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+
+///Sketch written by Jeff Sadler ///
+
+#include <SD.h>
+const int chipSelect = 10;
+
+/*Note:This code is used for Arduino 1.0 or later*/
+//serial communication to Sim900
+#include <SoftwareSerial.h>
+SoftwareSerial Sim900Serial(2, 3);
+
+#include <SDI12.h>
+#define DATAPIN 9         // change to the proper pin
+SDI12 mySDI12(DATAPIN); 
+
+//define variables for HydroServer Lite
+byte SourceID = 6;
+byte SiteID = 84;
+byte VarID1 = 10;
+byte VarID2 = 11;
+String url = "http://worldwater.byu.edu/jefftest.php";
+
+//define variables
+char character;
+
+//String Var1 = "55.55";
+//String Var2 = "66.66";
+
+byte minInt = 0;
+byte secInt = 0;
+byte hourInt = 0;
+/*byte yearInt = 0;
+byte monthInt=0;
+byte dayInt=0;*/
+
+char tempBuf[3];
+
+byte recTime = 30;
+byte recIntv = 45;
+
+char dateTimeBuf[25];
+
+int count = 0;
+
+void setup()
+{
+  Sim900Serial.begin(115200);               // the GPRS baud rate  
+  delay(500);
+  Sim900Serial.println("AT+IPR=19200");
+  delay(500);
+  Sim900Serial.begin(19200);               // the GPRS baud rate   
+  delay(1000);
+  Serial.begin(9600);               // the Hardware serial rate 
+  pinMode(10, OUTPUT);                 //set pinmode 10 as output for SD card
+  if (!SD.begin(chipSelect)) {
+    Serial.println("Card failed, or not present");
+     //don't do anything more:
+    }
+  else {Serial.println("card initialized.");}
+
+ mySDI12.begin();
+
+ timestamp();
+ timestamp();
+ powerUp();
+ recTime = secInt + 5;
+   if(recTime  >=  60){
+      recTime = recTime-60;
+      }
+}
+void loop()
+{    
+  //begin each loop with timestamp 
+  timestamp();
+  Serial.println(dateTimeBuf);
+
+  //take measurement when minutes is recTime (e.g. 15)
+ if (secInt==recTime){
+   recTime += recIntv; 
+   sd();  
+
+  if(recTime  >=  60){
+      recTime = recTime-60;
+      }
+ }
+ if (Serial.available())
+    switch(Serial.read())
+   {
+      case 'm':
+      sd();
+      break;
+
+   } 
+
+
+
+
+ delay (300);
+
+}
+
+//used to adjust time and date for realtime clock on sim900
+/*void Clock(){
+  Sim900Serial.println("AT");
+  delay(100);
+  ShowSerialData();
+  Sim900Serial.println("AT+CCLK=\"14/03/25,10:04:30-24\"");
+  delay(100);
+  ShowSerialData();
+}*/
+
+//powers down sim900
+void powerDown(){
+  Sim900Serial.println("AT");
+  delay(100);
+  ShowSerialData();
+  Sim900Serial.println("AT+CFUN=0");
+  delay(100);
+  ShowSerialData();
+}
+
+//powers up sim900
+void powerUp(){
+  Sim900Serial.println("AT");
+  delay(100);
+  ShowSerialData();
+  Sim900Serial.println("AT+CFUN=1");
+  delay(100);
+  ShowSerialData();
+}
+void test(){
+  Serial.println("test");
+}
+//function returns timestamp
+void timestamp(){ 
+  String content = "";
+  Sim900Serial.print("AT + CCLK?\r");
+  delay(100);
+  while (Sim900Serial.available()){
+  character = Sim900Serial.read();
+  content.concat(character); 
+  content.trim();}
+
+  int slashPosition = content.lastIndexOf("/");
+  String dateTime = content.substring(slashPosition -5,slashPosition +12);
+  String temp = "";
+
+  temp = content.substring(slashPosition +4,slashPosition +6);
+  temp.toCharArray(tempBuf,3);
+  hourInt = atoi (tempBuf);
+
+  temp = content.substring(slashPosition +7,slashPosition +9);
+  temp.toCharArray(tempBuf,3);
+  minInt = atoi (tempBuf);
+
+  temp = content.substring(slashPosition +10,slashPosition +12);
+  temp.toCharArray(tempBuf,3);
+  secInt = atoi (tempBuf);
+
+  dateTime.toCharArray(dateTimeBuf, 25);  
+
+}
+
+
+//writes all values to sd card
+void sd(){
+  String str = sensors();
+
+  int comPos = str.indexOf(",");
+  int comPos1 = str.indexOf(",",comPos+1);
+  String Var1 = str.substring(comPos+1, comPos1);
+
+  int comPos2 = str.indexOf(",",comPos1+1);
+  int comPos3 = str.indexOf(",",comPos2+1);
+  String Var2 = str.substring(comPos2+1, comPos3);
+
+  Serial.println(Var1);
+  Serial.println(Var2);
+
+ File dataFile = SD.open("test.txt", FILE_WRITE);
+  if (dataFile){                                        //do this part each time
+    dataFile.print(dateTimeBuf);
+    dataFile.print(",");
+    dataFile.print(Var1);
+    dataFile.print(",");
+    dataFile.print(Var2);
+    dataFile.print(";");
+    dataFile.close();
+    Serial.println ("SD Success");
+    count ++;
+    Serial.print("count: ");
+    Serial.println(count);
+}
+ else{
+ Serial.println("error with SD card");
+ }
+  if(count == 4){
+    String dataString = "";
+    File dataFile = SD.open("test.txt", FILE_READ);
+    if (dataFile) {
+      int i=0;
+
+      dataFile.seek(dataFile.size()-264);
+      Serial.println(dataFile.position());
+      while (dataFile.available()&& dataFile.position()<dataFile.size()) {
+         char c = dataFile.read();
+         dataString += c; 
+       }
+      dataFile.close();
+    } 
+    else {
+  	// if the file didn't open, print an error:
+       Serial.println("error opening test.txt");
+    }
+    Serial.println(dataString);
+    SubmitHttpRequest(dataString);
+    count = 0;
+ }
+} 
+
+///SubmitHttpRequest()
+///this function is submit a http request
+///attention:the time of delay is very important, it must be set enough 
+void SubmitHttpRequest(String dataString)
+{
+  Sim900Serial.println("AT+CSQ");
+  delay(100);
+
+  ShowSerialData();// this code is to show the data from gprs shield, in order to easily see the process of how the gprs shield submit a http request, and the following is for this purpose too.
+
+  Sim900Serial.println("AT+CGATT?");
+  delay(100);
+
+  ShowSerialData();
+
+  Sim900Serial.println("AT+SAPBR=3,1,\"CONTYPE\",\"GPRS\"");//setting the SAPBR, the connection type is using gprs
+  delay(1000);
+
+  ShowSerialData();
+
+  Sim900Serial.println("AT+SAPBR=3,1,\"APN\",\"CMNET\"");//setting the APN, the second need you fill in your local apn server
+  delay(4000);
+
+  ShowSerialData();
+
+  Sim900Serial.println("AT+SAPBR=1,1");//setting the SAPBR, for detail you can refer to the AT slashnd mamual
+  delay(2000);
+
+  ShowSerialData();
+
+  Sim900Serial.println("AT+HTTPINIT"); //init the HTTP request
+
+  delay(2000); 
+  ShowSerialData();
+
+  Sim900Serial.print("AT+HTTPPARA=\"URL\",\"http://worldwater.byu.edu/jefftest.php?info=");// setting the httppara, the second parameter is the website you want to access
+  Sim900Serial.print(SourceID);
+  Sim900Serial.print(",");
+  Sim900Serial.print(SiteID);
+  Sim900Serial.print(",");
+  Sim900Serial.print(VarID1);
+  Sim900Serial.print(",");
+  Sim900Serial.print(VarID2);
+
+  Sim900Serial.print("&readings=");
+  Sim900Serial.print(dataString);
+  Sim900Serial.println("\"");
+
+  delay(1000);  
+  ShowSerialData();
+
+  Sim900Serial.println("AT+HTTPACTION=0");//submit the request 
+  delay(10000);//the delay is very important, the delay time is base on the return from the website, if the return datas are very large, the time required longer.
+  //while(!Sim900Serial.available());
+
+  ShowSerialData();
+
+  Sim900Serial.println("AT+HTTPREAD");// read the data from the website you access
+  delay(300);
+
+  ShowSerialData();
+
+  Sim900Serial.println("");
+  delay(100);
+}
+
+
+
+void ShowSerialData()
+{
+  while(Sim900Serial.available()!=0)
+    Serial.write(Sim900Serial.read());
+}
+
+String sensors(){
+  mySDI12.sendCommand("0M7!"); 
+  delay(300);                     // wait a while for a response
+  String waitStr = bufferToStr();
+  String waitTrim = waitStr.substring(0,3);
+  int waitInt = waitTrim.toInt()*1000;
+  delay(waitInt); // print again in three seconds
+  mySDI12.sendCommand("0D0!"); 
+  delay(300);                     // wait a while for a response
+  String mStr = bufferToStr();
+  return(mStr);
+}
+
+String bufferToStr(){
+  String buffer = "";
+  mySDI12.read(); // consume address
+
+  while(mySDI12.available()){
+    char c = mySDI12.read();
+    if(c == '+' || c == '-'){
+      buffer += ',';   
+      if(c == '-') buffer += '-'; 
+    } 
+    else {
+      buffer += c;  
+    }
+    delay(100); 
+  }
+ return(buffer);
+}
+
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