read function in python serial

[sinan .]

hi i`m developing a program that reads the serial device. i like the
readline() function, but readline() depends on \n character, i want a
similar function that waits for a specific character or string that i
gave like [ETX] (hex03) how can i do this ?
thank you.

[Peter Hansen]

sinan . wrote:

hi i`m developing a program that reads the serial device. i like the
readline() function, but readline() depends on \n character, i want a
similar function that waits for a specific character or string that i
gave like [ETX] (hex03) how can i do this ?
thank you.

def serial_readline(port, eos='\n'):
'''read from port until \n or specified end-of-string is found'''
data = ''
while 1:
data += port.read(1)
if data.endswith(eos):
return data
This is just a starting point. If it's not adequate, please clarify
your needs.

-Peter