Python—为什么不发送incomingState值？

当我执行python脚本时，它连接并且不显示任何文本，另一方面，服务器总是只执行以下语句：

if（incomingState！=state）{}

如何确保python发送

int

type

incomingState

=

0

或

1

时有无

\n

或

\r\n

？因为C代码尚未正确接收

有什么想法吗

python_toserver.py：

import serial
import time
#ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=0)
ser = serial.Serial('/dev/ttyACM0' , 9600, timeout=0)
#ser.open()
ser.write('1')

while True:
  data = ser.read(1024)
  if len(data) > 0:
    print 'Got:', data.encode("hex")    
  time.sleep(0.5)
ser.close()

服务器\u c.c:

#define LED1 2

int state = LOW;
char incomingByte = 0;

void setup() {
  Serial.begin(9600);
  pinMode(LED1, OUTPUT);
}

void loop() {

  if (Serial.available() > 0) {

    int incomingState = (Serial.read() == '1');
    Serial.print("I received: ");
    Serial.println(incomingState, DEC);

    if(incomingState != state) { 
      state = incomingState;
      digitalWrite(LED1, HIGH); 
      Serial.print("Setting LED as: ");
      Serial.println(state);
    } else {
      Serial.print("Doing nothing. LED already: ");
      Serial.println(state);
    }

  }

}

编辑：已尝试：

py:

c:

然后我得到答复：

Got:  connected
Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

---

这里，您已将数据传递到串行端口，一个值为1的单字节：

ser.write('\x01')

但在服务器代码中，您将该字节（作为

字符

接收）与ascii字符常量

'1'

进行比较，后者描述了一个值为49的字节：

---

您是否尝试过发送

\x01

？是的-我发送了

\x01

，但如果（incomingState！=state）{}仅在Python中，则C代码仍在处理

，我看不到输出，请查看我上面的编辑我不太懂
C++
，但也许您应该尝试接收，而不检查您收到的内容。也就是说，C++代码（Car）InCuffyStase=串行。Read（）/Cube >或者……顺便说一下，您在C++代码中做了很多事情，这些代码都是过时的C-ISM。C++有一个真正的<代码>布尔O/COD>类型，并且可以用<代码> const <代码>标识符来定义常数，而不是滥用预处理器.WOW -优。是的，现在1工作了。但有一个问题是Python永远在运行，即使循环C已经发送了DONE命令，请查看最后一次更新代码：-这是我的最后一次更新，如果代码中有任何风险，请告诉我。除此之外，一切正常，谢谢。当您收到命令时，Python代码将关闭串行连接，但这不会中断
而
为True:
循环。
Got:  connected
Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

Got:  I received: 0
Doing nothing. LED already: 0

ser.write('\x01')

int incomingState = (Serial.read() == '1');