Tutorial for live serial input monitoring

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Dwi D. A 2014-9-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/153060-tutorial-for-live-serial-input-monitoring

评论： Geoff Hayes 2014-9-1

在 MATLAB Online 中打开

its my first time post, hope it will be good information. thank you

this example code :

clear all; close all;

s = serial('COM8'); %assigns the object s to serial port

set(s, 'FlowControl', 'none'); set(s, 'BaudRate', 9600); set(s, 'Parity', 'none'); set(s, 'DataBits', 8); set(s, 'StopBit', 1);

%clc; x=0; fopen(s); while(1)

a=fscanf(s)
d=str2num(a);
if length(x)>9
    for i=2:10
        x(i-1)=x(i);
    end
    x(10)=d;
    i=2;
else
x=[x d];
end
 plot(x);
 axis auto;
 grid on;
  drawnow;

end

---------------------------------------- this is arduino uno example code for serial at adc pin 0

/* Analog input, analog output, serial output

 Reads an analog input pin, maps the result to a range from 0 to 255
 and uses the result to set the pulsewidth modulation (PWM) of an output pin.
 Also prints the results to the serial monitor.
 The circuit:
 * potentiometer connected to analog pin 0.
   Center pin of the potentiometer goes to the analog pin.
   side pins of the potentiometer go to +5V and ground
 * LED connected from digital pin 9 to ground
 created 29 Dec. 2008
 modified 9 Apr 2012
 by Tom Igoe
 This example code is in the public domain.
 */

// These constants won't change. They're used to give names // to the pins used: const int analogInPin = A0; // Analog input pin that the potentiometer is attached to const int analogOutPin = 9; // Analog output pin that the LED is attached to

int sensorValue = 0; // value read from the pot int outputValue = 0; // value output to the PWM (analog out)

void setup() { // initialize serial communications at 9600 bps: Serial.begin(9600); }

void loop() { // read the analog in value: sensorValue = analogRead(analogInPin); // map it to the range of the analog out: outputValue = map(sensorValue, 0, 1023, 0, 255); // change the analog out value: analogWrite(analogOutPin, outputValue);

// print the results to the serial monitor:
//Serial.print("sensor = " );                       
Serial.println(sensorValue);
//Serial.print(sensorValue,DEC);     
//Serial.print("\n");     
//Serial.print("\t output = ");      
// Serial.println(outputValue);   
// wait 2 milliseconds before the next loop
// for the analog-to-digital converter to settle
// after the last reading:
delay(100);                     
}

------------------------------------- thank you for read, hope it give good example

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Geoff Hayes 2014-9-1

Dwi - do you have a question or are you just posting a tutorial on live serial input monitoring? If the latter, this may be better suited for the MATLAB File Exchange rather than this question and answer forum.

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