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Instrument/Acmecape: ensure iio-capture termination

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Once an ACME cape instrument is released, if the stop() method has not
been called by the client code, let's ensure to release the channels by
killing the corresponding iio-caputure process.

Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
This commit is contained in:
Patrick Bellasi 2017-10-12 14:51:19 +01:00
parent 9837b4012b
commit 4a6aacef99
1 changed files with 7 additions and 0 deletions
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7
devlib/instrument/acmecape.py
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@ -58,6 +58,12 @@ class AcmeCapeInstrument(Instrument):
self.add_channel('device', 'current')
self.add_channel('timestamp', 'time_ms')
def __del__(self):
if self.process and self.process.pid:
self.logger.warning('killing iio-capture process [%d]...',
self.process.pid)
self.process.kill()
def reset(self, sites=None, kinds=None, channels=None):
super(AcmeCapeInstrument, self).reset(sites, kinds, channels)
self.raw_data_file = tempfile.mkstemp('.csv')[1]
@ -98,6 +104,7 @@ class AcmeCapeInstrument(Instrument):
.format(self.process.returncode, output))
if not os.path.isfile(self.raw_data_file):
raise HostError('Output CSV not generated.')
self.process = None
def get_data(self, outfile):
if os.stat(self.raw_data_file).st_size == 0: