i try to write it but the value output at LCD is "pEhsk"
the code for the ph sensor is
- CODE: SELECT_ALL_CODE
#include <LiquidCrystal.h>
#include <SoftwareSerial.h> //add the soft serial libray
#define rxpin 2 //set the RX pin to pin 2
#define txpin 3 //set the TX pin to pin 3
SoftwareSerial myserial(rxpin, txpin); //enable the soft serial port
String inputstring = ""; //a string to hold incoming data from the PC
String sensorstring = ""; //a string to hold the data from the Atlas Scientific product
boolean input_stringcomplete = false; //have we received all the data from the PC
boolean sensor_stringcomplete = false; //have we received all the data from the Atlas Scientific product
LiquidCrystal lcd(7,8,9,10,11,12);
void setup()
{ //set up the hardware
Serial.begin(38400); //set baud rate for the hardware serial port to 38400
myserial.begin(38400); //set baud rate for software serial port to 38400
inputstring.reserve(5); //set aside some bytes for receiving data from the PC
sensorstring.reserve(30); //set aside some bytes for receiving data from Atlas Scientific product
lcd.begin(16, 2);
lcd.print("Ph : ");
}
void serialEvent()
{ //if the hardware serial port receives a char
char inchar = (char)Serial.read(); //get the char we just received
inputstring += inchar; //add it to the inputString
if(inchar == '\r') {input_stringcomplete = true;} //if the incoming character is a <CR>, set the flag
}
void loop()
{ //here we go....
if (input_stringcomplete)
{ //if a string from the PC has been recived in its entierty
myserial.print(inputstring); //send that string to the Atlas Scientific product
inputstring = ""; //clear the string:
input_stringcomplete = false; //reset the flage used to tell if we have recived a completed string from the PC
}
while (myserial.available())
{ //while a char is holding in the serial buffer
char inchar = (char)myserial.read(); //get the new char
sensorstring += inchar; //add it to the sensorString
if (inchar == '\r') {sensor_stringcomplete = true;} //if the incoming character is a <CR>, set the flag
}
if (sensor_stringcomplete)
{ //if a string from the Atlas Scientific product has been received in its entirety
Serial.print(sensorstring); //use the hardware serial port to send that data to the PC
sensorstring = ""; //clear the string:
sensor_stringcomplete = false; //reset the flag used to tell if we have received a completed string from the Atlas
}
lcd.setCursor(0, 1);
lcd.println(sensorstring);
lcd.setCursor(1,1);
delay(3000);
}
thanks...
