通常，您与微通信所做的工作是将单个字符用于轻量级或创建通信协议。基本上你有一个开始标志，结束标志和某种校验和，以确保数据正确传输。有很多方法可以做到这一点。

以下代码适用于Python 3.您可能必须对字节数据进行更改。

# On micro

data = b"[Hello,1234]"

serial.write(data)

在电脑上，你会运行，如果您使用的是GUI

def read_data(ser, buf=b'', callback=None):

if callback is None:

callback = print

# Read enough data for a message

buf += ser.read(ser.inwaiting()) # If you are using threading +10 or something so the thread has to wait for more data, this makes the thread sleep and allows the main thread to run.

while b"[" not in buf or b"]" not in buf:

buf += ser.read(ser.inwaiting())

# There may be multiple messages received

while b"[" in buf and b']' in buf:

# Find the message

start = buf.find(b'[')

buf = buf[start+1:]

end = buf.find(b']')

msg_parts = buf[:end].split(",") # buf now has b"Hello, 1234"

buf = buf[end+1:]

# Check the checksum to make sure the data is valid

if msg_parts[-1] == b"1234": # There are many different ways to make a good checksum

callback(msg_parts[:-1])

return buf

running = True

ser = serial.serial("COM10", 9600)

buf = b''

while running:

buf = read_data(ser, buf)

线程是非常有用的。然后，当GUI显示数据时，您可以让线程在后台读取数据。

import time

import threading

running = threading.Event()

running.set()

def thread_read(ser, callback=None):

buf = b''

while running.is_set():

buf = read_data(ser, buf, callback)

def msg_parsed(msg_parts):

# Do something with the parsed data

print(msg_parsed)

ser = serial.serial("COM10", 9600)

th = threading.Thread(target=thread_read, args=(ser, msg_parsed))

th.start()

# Do other stuff while the thread is running in the background

start = time.clock()

duration = 5 # Run for 5 seconds

while running.is_set():

time.sleep(1) # Do other processing instead of sleep

if time.clock() - start > duration

running.clear()

th.join() # Wait for the thread to finish up and exit

ser.close() # Close the serial port

注意，在线程例子中，我使用回调它是被作为一个变量传递后来被称为函数。另一种方式是将数据放入队列中，然后在队列的另一部分处理队列中的数据。