求助，串口发送数据的问题

quqianghao

我使用的是2560的板子 在ARDUINO IDE 中的串口查看器中输入的数据都正常，就是用PYTHON 或 PROCESSING 的时候发送的数据就不能成功解析 MAC  LINUX WINDOWS都测试了  不行啊，为啥啊，自带的例子都不行。

ARDUINO 代码是接收串口的数据为H 时 灯亮 否则灭
用IDE 的串口查看器发送参数就可行
用PROCESSING发送参数就不行   串口速率全无问题  求救啊


下面的代码是ARDUINO 的  是PROCESSING 中的例子

1. 
   
2.   // Wiring/Arduino code:
   
3. // Read data from the serial and turn ON or OFF a light depending on the value
   
4. 
   
5. char val; // Data received from the serial port
   
6. int ledPin = 45; // Set the pin to digital I/O 4
   
7. 
   
8. void setup() {
   
9. pinMode(ledPin, OUTPUT); // Set pin as OUTPUT
   
10. Serial.begin(9600); // Start serial communication at 9600 bps
    
11. }
    
12. 
    
13. void loop() {
    
14. if (Serial.available()) { // If data is available to read,
    
15. val = Serial.read(); // read it and store it in val
    
16. }
    
17. if (val == 'H') { // If H was received
    
18. digitalWrite(ledPin, HIGH); // turn the LED on
    
19. } else {
    
20. digitalWrite(ledPin, LOW); // Otherwise turn it OFF
    
21. }
    
22. delay(100); // Wait 100 milliseconds for next reading
    
23. }
    

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PROCESSION 代码

1. import processing.serial.*;
   
2. 
   
3. Serial myPort;  // Create object from Serial class
   
4. int val;        // Data received from the serial port
   
5. 
   
6. void setup()
   
7. {
   
8.   size(200, 200);
   
9.   // I know that the first port in the serial list on my mac
   
10.   // is always my  FTDI adaptor, so I open Serial.list()[0].
    
11.   // On Windows machines, this generally opens COM1.
    
12.   // Open whatever port is the one you're using.
    
13.   String portName = "COM4";
    
14.   myPort = new Serial(this, portName, 9600);
    
15.   println(portName);
    
16. }
    
17. 
    
18. void draw() {
    
19.   background(255);
    
20.   if (mouseOverRect() == true) {  // If mouse is over square,
    
21.     fill(204);                    // change color and
    
22.     myPort.write('H');              // send an H to indicate mouse is over square
    
23.     println('H');
    
24.   }
    
25.   else {                        // If mouse is not over square,
    
26.     fill(0);                      // change color and
    
27.     myPort.write('L');              // send an L otherwise
    
28.     println('L');
    
29. }
    
30.   rect(50, 50, 100, 100);         // Draw a square
    
31. }
    
32. 
    
33. boolean mouseOverRect() { // Test if mouse is over square
    
34.   return ((mouseX >= 50) && (mouseX <= 150) && (mouseY >= 50) && (mouseY <= 150));
    
35. }
    

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