串行通信PySerial我收到奇怪的字符(可能是ASCII?),我无法对其进行解码

时间:2019-11-27 12:40:38

标签: python arduino pyserial

我尝试在Arduino和Python之间通信串行数据。我得到了此角色列表,但即时通讯无法将其转换为整数。我没有通过解码运行它:当我从0-255 aka单字节发送值时,它可以工作...

我正在使用Python 3.7

y.encode('utf-8').strip()

Python代码

import serial
import numpy as np

barr = [4]

ser = serial.Serial(
    port='COM12',\
    baudrate=56000,\
    parity=serial.PARITY_NONE,\
    stopbits=serial.STOPBITS_ONE,\
    bytesize=serial.EIGHTBITS,\
        timeout=5)

print("connected to: " + ser.portstr)
count=0

while True:

    y = ser.readline(512)
    print(y)

Python输出:

b'\x9a1\x9aX\x9a\x7f\x9a\xa6\x9c\xce\x9a\xf5\x9a\x1c\x9aC\x9cj\x9a\x91\x9a\xb8\x9a\xdf\x9c\x06\x9a-\x9cT\x9a{\x9c\xa2\x9c\xc9\x9a\xf0\x9a\x17\x9c>\x9af\x9a\x8d\x9a\xb4\x9a\xdb\x9a\x02\ and it goes one....

Arduino代码的Serial.write部分:

for (unsigned short int nIndexStep = 0; nIndexStep<g_objRF.getConfiguration()->getFreqSpectrumSteps(); nIndexStep++)
  {

    //Print every step of sweep data onto display
    int stepFreq = g_objRF.getSweepData()->getFrequencyKHZ(nIndexStep);
    int stepAmp  = g_objRF.getSweepData()->getAmplitudeDBM(nIndexStep);
    delay(serialdelay);

    Serial.write(stepFreq);
    delay(serialdelay);
    Serial.write(stepAmp);
    if (stepAmp <= (TopLevel -90))
    {
      stepAmp = TopLevel -90;
    }
    if (stepAmp > TopLevel)
    {
      stepAmp = TopLevel;
    }
    //Serial.print(stepAmp);
    //Serial.print(", ");
    comp2 = stepAmp;
    comp1 = max(comp1, comp2);




    {

    }

  }



      }
      Serial.write("\n");


1 个答案:

答案 0 :(得分:0)

使用Serial.write,您可以发送字节,字符串或字节数组。您不能发送整数。

如果要发送整数,则必须先将其转换为字节数组。

有无数种方法可以做到这一点。位掩码,强制转换指针,并集...只需在网上搜索并选择喜欢的人即可。

请参见https://www.arduino.cc/reference/en/language/functions/communication/serial/write/