Pyserial 从 USB 串行端口打印空 b ' '

Question

I seem to be having an problem, when I run this Python 3.5 script It's for USB serial controlled device:我似乎遇到了问题，当我运行这个 Python 3.5 脚本时，它是用于 USB 串行控制设备的：

import serial
import time

ser1 = serial.Serial('/dev/tty.usbserial', 115200, timeout=0.1)

def setupMode():
    ser1.write(b'$PF,200\r\n')
    ser1.write(b'$PO,20\r\n')

setupMode()


def startMeasurments():
    ser1.write(b'$GO\r\n')

startMeasurments()

def checkUnit():
    ser1.write(b'$US\r\n')

checkUnit()

while True:
    data = ser1.read(9999)
    print ('Got:', data)

time.sleep(0.1)
ser1.close()

I get these results:我得到这些结果：

python maintest.py
Got: b''
Got: b''
Got: b''
Got: b''
Got: b''
Got: b''
Got: b''
Got: b''
Got: b''
Got: b''

the frequency of the printed data seems correct, and when tested the command:打印数据的频率似乎是正确的，当测试命令时：

ser1.write(xxxxx)

it triggers the device and outputs the necessary data to manufacturer provided software, so it's working fine- just the python output seems not to be working.它触发设备并将必要的数据输出到制造商提供的软件，因此它工作正常 - 只是 python 输出似乎不起作用。 How could i tackle this?我怎么能解决这个问题？

Answer 1

Maybe this will work:也许这会奏效：

while True:
    data = ''
    while ser1.inWaiting()>0:
        data += ser1.read(1)
    if data:
        print ('Got:', data)

Pyserial 从 USB 串行端口打印空 b ' '

问题描述

1 个解决方案

解决方案1
0 已采纳 2017-05-19 08:00:56

Pyserial 从 USB 串行端口打印空 b &#39; &#39;

问题描述

1 个解决方案

解决方案1 0 已采纳 2017-05-19 08:00:56

Pyserial 从 USB 串行端口打印空 b ' '

解决方案1
0 已采纳 2017-05-19 08:00:56