uart_echo

来自「8051 interrupt assemble code」· 代码 · 共 40 行

#!/usr/bin/python
import sys
import serial
import time

s = serial.Serial(port='/dev/tty.usbserial',
	baudrate=19200, bytesize=8, parity=serial.PARITY_NONE, stopbits=1,
	xonxoff=0,rtscts=0,
	timeout=.2)
class DelayedFileObject(object):
	def __init__(self, f):
		self.f = f
		self.f.write('\n')
		self.f.flushInput()
	def read(self, n=1):
		return self.f.read(n)
	def write(self, s):
		for c in s:
			self.f.write(c)
			time.sleep(.01)
	def flush(self):
		self.f.flush()

s = DelayedFileObject(s)
args = sys.argv[1:]
for i in args[:-1]:
	s.write(i+' ')
try:
	s.write(args[-1]+'\n')
except IndexError:
	pass
s.flush()

while 1:
	c = s.read()
	if c == '':
		break
	sys.stdout.write(c)
	sys.stdout.flush()