Hi,
I am reading the data from the sensor encoder which consists of 2 bytes. I need to send 2 bytes of at the same time in serial write .Can you plz tell me how to send the 2 bytes of data at a time.
e.g. Serial.write( ptr, len)
Did you read the help?
I need to 2 bytes of integer data at the same time to Arduino ...which I am reading the the 2 bytes of same data in c++ using qt softwre...I tried that way it is not working.
int encoder_in = 3;
volatile unsigned int pulses = 0;
int relay =8;
char sta;
float var=0;
//int Reset = 4;
void(* resetFunc) (void) = 0;
void count() {
// This function is called by the interrupt
pulses++;
}
void setup() {
pinMode(encoder_in, INPUT_PULLUP);
pinMode(relay,OUTPUT);
attachInterrupt(1, count, RISING);
Serial.begin(9600);
digitalWrite(relay,LOW);
// digitalWrite(Reset, HIGH);
//pinMode(Reset, OUTPUT);
}
void loop()
{
if(Serial.available()>0)
{
//Serial.print("came inside");
sta=Serial.read();
Serial.print(sta);
if(sta=='b')
{
// Serial.print("motior is on");
digitalWrite(relay,HIGH);
}
if(sta=='a')
{
// Serial.print("motior is off");
digitalWrite(relay,LOW);
}
if(sta=='c')
{
//Serial.print("Resetting");
//digitalWrite(Reset, LOW);
resetFunc();
}
}
//Serial.print("pulses=");
// Serial.write(pulses);
Serial.print(",");
delay(220);
}
Why not use Serial.print() and write you PC program so it interprets the received data as text?
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...R
chandanaraju:
I need to 2 bytes of integer data at the same time to Arduino ...which I am reading the the 2 bytes of same data in c++ using qt softwre...I tried that way it is not working.
If you're writing a Windows C++ program, you can use this library "ArduSerial" to interface with COM ports instead of QT.