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utils/serial_port: fix logging

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pexpect.spawn object expects the logger to have write() and flush()
methods, neither of which are present in logging.Logger. Create a
subclass that adds these missing methods to enable correct logging for
pexpect.spawn.
This commit is contained in:
Sergei Trofimov 2017-12-11 17:17:07 +00:00 committed by marcbonnici
parent 56a5f8ab12
commit 8ac588bc1f
1 changed files with 10 additions and 2 deletions
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12
devlib/utils/serial_port.py
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@ -32,6 +32,14 @@ from pexpect import EOF, TIMEOUT # NOQA pylint: disable=W0611
from devlib.exception import HostError
class SerialLogger(Logger):
write = Logger.debug
def flush(self):
pass
def pulse_dtr(conn, state=True, duration=0.1):
"""Set the DTR line of the specified serial connection to the specified state
for the specified duration (note: the initial state of the line is *not* checked."""
@ -40,7 +48,7 @@ def pulse_dtr(conn, state=True, duration=0.1):
conn.setDTR(not state)
def get_connection(timeout, init_dtr=None, logcls=Logger,
def get_connection(timeout, init_dtr=None, logcls=SerialLogger,
*args, **kwargs):
if init_dtr is not None:
kwargs['dsrdtr'] = True
@ -83,7 +91,7 @@ def write_characters(conn, line, delay=0.05):
@contextmanager
def open_serial_connection(timeout, get_conn=False, init_dtr=None,
logcls=Logger, *args, **kwargs):
logcls=SerialLogger, *args, **kwargs):
"""
Opens a serial connection to a device.