CODEWITHSUNDEEP
pythonpython-3.xpython-2.7serial-portmicrocontroller
user3764118
user3764118

Reputation: 65

python serial port communication

Here is my code for serial port communication 

import matplotlib.pyplot as plt
import matplotlib.animation as animation
from matplotlib import style


import serial
MCU = serial.Serial('COM35', 115200, timeout=.1)


import time
time.sleep(1) #give the connection a second to settle

while True:
     data = MCU.readline()
print(str(data))

but i'm getting in the output as

b'\x0b\x16 )6\x06\x07\x08X\x02\x16,' (it's Hex+Ascii value)

and this is my input data

uint8_t myBuf[]={11,22,32,41,54,6,7,8,88,2,22,44};

any one know what i'm doing wrong here?

Upvotes: 2

Views: 1884

Answers (3)

Virgil
Virgil

Reputation: 21

Maybe it will be good idea to try to decode it?

just as idea

while ser.isOpen():
    for s in ser.read():
        s = ser.readline().decode('utf-8') #reading data from the port with decoding from UTF-8
        com = str(s).replace('\n','') #cutting out second pass to the new line
        print(s)

Upvotes: 1

Rohi
Rohi

Reputation: 814

When you wrote str(data) you requested python to tranlsate the binary data to a readable string (In a readable fromat).

Since there is no readable representation to most of the bytes python just translates them into their hex representation (as a string).

If you want to print them as a list just: list(data).

Upvotes: 1

Geoffrey
Geoffrey

Reputation: 94

What format do you want your output in? As you suggest, what you have is the correct data but in byte format. For example you could get it as a list of python ints as follows (Python 3):

>>> list(data)
[11, 22, 32, 41, 54, 6, 7, 8, 88, 2, 22, 44]

The struct module may also be useful for you in decoding byte data.

(I can't leave a comment, sorry.)

Upvotes: 2

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