[PDF] Arduino Mega EC Sample Code Atlas-Scientific.com //a string

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Atlas-Scientific.comCopyright © Atlas Scientific LLC All Rights Reserved

Click here to download the *.ino file

String inputstring = "";

String sensorstring = "";

boolean input_string_complete = false; boolean sensor_string_complete = false; void serialEvent() { inputstring = Serial.readStringUntil(13); input_string_complete = true; void serialEvent3() { sensorstring = Serial3.readStringUntil(13); sensor_string_complete = true; void print_EC_data(void) { char sensorstring_array[30]; char *EC; char *TDS; char *SAL; char *GRAV; float f_ec; sensorstring.toCharArray(sensorstring_array, 30);

EC = strtok(sensorstring_array, ",");

TDS = strtok(NULL, ",");

SAL = strtok(NULL, ",");

GRAV = strtok(NULL, ",");

Serial.print("EC:");

Serial.println(EC);

Serial.print("TDS:");

Serial.println(TDS);

Serial.print("SAL:");

Serial.println(SAL);

Serial.print("GRAV:");

Serial.println(GRAV);

Serial.println();

//f_ec= atof(EC);

} //a string to hold incoming data from the PC//a string to hold the data from the Atlas Scientific product//have we received all the data from the PC

//have we received all the data from the Atlas Scientific product /this function will pars the string //we make a char array //char pointer used in string parsing //char pointer used in string parsing //char pointer used in string parsing //char pointer used in string parsing //used to hold a floating point number that is the EC //convert the string to a char array //let's pars the array at each comma //let's pars the array at each comma //let's pars the array at each comma //let's pars the array at each comma //we now print each value we parsed separately //this is the EC value //we now print each value we parsed separately //this is the TDS value //we now print each value we parsed separately //this is the salinity value //we now print each value we parsed separately //this is the specific gravity //this just makes the output easier to read //uncomment this line to convert the char to a floatvoid setup() {

Serial.begin(9600);

Serial3.begin(9600);

inputstring.reserve(10); sensorstring.reserve(30); }//set up the hardware //set baud rate for the hardware serial port_0 to 9600 //set baud rate for software serial port_3 to 9600 //set aside some bytes for receiving data from the PC //set aside some bytes for receiving data from Atlas Scientific product //if the hardware serial port_0 receives a char //read the string until we see a //set the flag used to tell if we have received a completed string from the PC //if the hardware serial port_3 receives a char //read the string until we see a //set the flag used to tell if we have received a completed string from the PC void loop() { if (input_string_complete == true) {

Serial3.print(inputstring);

Serial3.print('\r');

inputstring = ""; input_string_complete = false; if (sensor_string_complete == true) { if (isdigit(sensorstring[0]) == false) {

Serial.println(sensorstring);

else print_EC_data(); sensorstring = ""; sensor_string_complete = false; }//here we go... //if a string from the PC has been received in its entirety //send that string to the Atlas Scientific product //add a to the end of the string //clear the string //reset the flag used to tell if we have received a completed string from the PC //if a string from the Atlas Scientific product has been received in its entirety //if the first character in the string is a digit //send that string to the PC's serial monitor //if the first character in the string is NOT a digit //then call this function //clear the string //reset the flag used to tell if we have received a completed string from the //Atlas Scientific product

Arduino Mega

Conductivity Sample Code

//This code was written to be easy to understand. //Code efficiency was not considered. //Modify this code as you see fit. //This code will output data to the Arduino serial monitor. //Type commands into the Arduino serial monitor to control the EC circuit. //This code was written in the Arduino 1.6.5 IDE //An Arduino MEGA was used to test this code. centersheild BNC

Arduino MEGA

www.arduino.cc AREF GND

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01234567RESET3V3891

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ANALOG IN

COMMUNICATION

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