py_test.py

linux char device driver programming

#!/usr/bin/python

import sys
from string import *

FILE_NAME = "/dev/my_devfs"

def main():
	while 1 :
		print "Send me numbers from 0 to 127"
		print "or type Enter to return"
		num_str = sys.stdin.readline()
		if num_str == "\n":
			break
		print "input %d\n" % atoi(num_str)
		dev_fp = open(FILE_NAME,"w")
		dev_fp.write(chr(atoi(num_str)))
		dev_fp.close()

if __name__ == '__main__':
	main()