Transmitting more than 8 bits in labview through serial communication

hello,
i am working on communication through microcontroller and labview. My data is greater than 8bit. Can anyone may please help me in suggesting how to do it. Also i am interested in getting the real time images of the front pannel during the run time.
Thanks

You're going to have to split up your data among multiple bytes. If you are sending 16 bit data, send it as two bytes. 32 bit data, four bytes.
Look at split and join numbers VI's and also typecasting.
You'll have to provide a little more description about what you mean by "real-time images of the front panel".

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the user can enter data in this field which then pupulates other fields So, using the value of "this field" you then query the rest of the fields? Can you show us the code you use to populate the rest of the fields?
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Message was edited by: RK Talabathula

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Please assign points as way to say thanks
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Hello.
I am controlling a mobile robot using the Arduino due and labview
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-experiment image-
https://www.youtube.com/watch?v=oZdMCdHlDhM
- Arduino source-
#include <string.h>
int PWM1 = 5;
int DIR1 = 4; //direc
int PWM2 = 6;
int DIR2 = 7; //dir
float readNumber = 0;
float In1, In2, pwm, newtime, A;
float newposition1 = 0;
float newposition2 = 0;
unsigned int Aold1 = 0;
unsigned int Bnew1 = 0;
unsigned int Aold2 = 0;
unsigned int Bnew2 = 0;
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volatile long encoder2Pos = 0;
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int encoder1PinB = 9;//Encoder B pin
int encoder2PinA = 11;//Encoder A pin
int encoder2PinB = 12;//Encoder B pin
int Direction1, Direction2;
float pwm1_limit=255;
float pwm2_limit=255;
float count_old = 0;
float power1_old, power1_old2, power1_old3, power1_old4, power1_old5;
void setup() {
// put your setup code here, to run once:
pinMode(DIR1, OUTPUT);
pinMode(DIR2, OUTPUT);
Serial.begin(115200);
Serial.flush();
Serial2.begin(115200);
Serial2.flush();
pinMode(encoder1PinA, INPUT);
digitalWrite(encoder1PinA, HIGH); // turn on pullup resistor
pinMode(encoder1PinB, INPUT);
digitalWrite(encoder1PinB, HIGH); // turn on pullup resistor
pinMode(encoder2PinA, INPUT);
digitalWrite(encoder2PinA, HIGH); // turn on pullup resistor
pinMode(encoder2PinB, INPUT);
digitalWrite(encoder2PinB, HIGH); // turn on pullup resistor
attachInterrupt(encoder1PinA, d1EncoderA, CHANGE);
attachInterrupt(encoder1PinB, d1EncoderB, CHANGE);
attachInterrupt(encoder2PinA, d2EncoderA, CHANGE);
attachInterrupt(encoder2PinB, d2EncoderB, CHANGE);
void loop() {
if(Serial2.available()>0){
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float power2 = y;
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Direction1 = LOW;
else{
Direction1 = HIGH;
if(power2 >= 0){
Direction2 = HIGH;
else {
Direction2 = LOW;
power1 = abs(power1);
power2 = abs(power2);
if(power1 > pwm1_limit){
power1 = pwm1_limit;
if(power2 > pwm2_limit){
power2 = pwm2_limit;
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analogWrite(PWM2, power2);//PWM Speed Control
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String Q = "!";
String strValue2 = String(newposition2);
String stringThree = strValue + Q + strValue2;//문자 합치기
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else {//when Serial communication stop
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if(count > 10000){
newposition1 = 0; //Encoder initialization
newposition2 = 0; //Encoder initialization
encoder1Pos = 0;
encoder2Pos = 0;
else{
newposition1 = newposition1; //Encoder signal
newposition2 = newposition2; //Encoder signal
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Serial.println(count);
//Encoder Read//////////////////////////////////////////////////////////
void d1EncoderA()
Bnew1^Aold1 ? encoder1Pos++ : encoder1Pos--;
Aold1 = digitalRead(encoder1PinA);
void d1EncoderB()
Bnew1 = digitalRead(encoder1PinB);
Bnew1^Aold1 ? encoder1Pos++ : encoder1Pos--;
void d2EncoderA()
Bnew2^Aold2 ? encoder2Pos++:encoder2Pos--;
Aold2=digitalRead(encoder2PinA);
void d2EncoderB()
Bnew2=digitalRead(encoder2PinB);
Bnew2^Aold2 ? encoder2Pos++:encoder2Pos--;
}

piZviZ wrote:
Only data rate working is 9600 between labview and launchpad(arm cortex m4).Where all data rates work between Arduino serial port monitor and launchpad(arm cortex m4).
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The program has two functions:
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2.) Adjust temperature according to user input
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Beyond that, I really have no idea how to prevent the two functions from running into each other.
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-AK2DM
~~~~~~~~~~~~~~~~~~~~~~~~~~
"It’s the questions that drive us.”
~~~~~~~~~~~~~~~~~~~~~~~~~~
Attachments:
SempahoreExample.jpg ‏256 KB

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anurag
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anurag
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Hi there,
Thanks for the help. I finally got the error. I also wrote the code to generate the request.
Here it is.....
http://students.iiit.net/~anurag_rana/linux/PostPackager.java
http://students.iiit.net/~anurag_rana/linux/InfoExchanger.java
(might remove it soon)
The format of the POST request is...
--boundary\r\n
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Communication through serial

hi everyone,
My name is Zhi and I have another problem with on my senior project. Right now, we are trying to make labview communicate with an old stage. Its model is Neat_310M ( I have its manual uploaded). I have beening trying to make an simple communiation like wake up x-axis stage and ask it to move relative 10000 steps. However, I can only sucessfully do these two actions in hyper-terminal. When I used the VI i have set up, the stage does not responding at all.
my concern is that I did not open the serial port properly because while I continuely run the VI, I can still open and run the hyperterminal together. (i believe two programs cannot share the port at the same time).
my other concer is that since the stage controller echo back whatever command i type , for example, I want to ask stage to move relatives 10000 steps, when I type the command, "mr", then the controller will echo back "move relative". After it is echo, I enter the number and the stage moves. I obeserved this kind of respond in hyperterminal. I am wanderin if this kind of responds will cause the problem that i have.
thanks
Message Edited by zhao.lin on 05-12-2008 07:14 PM
Attachments:
test 1.vi ‏22 KB
Neat_310M_Manual.pdf ‏1120 KB

Hi zhoa.lin,
Yes, after you use Serial Write to send a command, you have to use Serial Read to read anything that is being returned. You should use "Bytes At Serial Port" to find out how many bytes to read. And use a string indicator to show what was read.
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Transmitting more than 8 bits in labview through serial communication

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