mirror of
https://github.com/ARM-software/workload-automation.git
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74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
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import os
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from devlib import SerialTraceCollector
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from wa import Instrument, Parameter, InstrumentError, hostside
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class SerialMon(Instrument):
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name = 'serialmon'
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description = """
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Records the traffic on a serial connection
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The traffic on a serial connection is monitored and logged to a
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file. In the event that the device is reset, the instrument will
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stop monitoring during the reset, and will reconnect once the
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reset has completed. This is to account for devices (i.e., the
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Juno) which utilise the serial connection to reset the board.
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"""
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parameters = [
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Parameter('serial_port', kind=str, default="/dev/ttyS0",
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description="""
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The serial device to monitor.
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"""),
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Parameter('baudrate', kind=int, default=115200,
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description="""
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The baud-rate to use when connecting to the serial connection.
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"""),
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]
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def __init__(self, target, **kwargs):
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super(SerialMon, self).__init__(target, **kwargs)
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self._collector = SerialTraceCollector(target, self.serial_port, self.baudrate)
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self._collector.reset()
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def start_logging(self, context):
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self.logger.debug("Acquiring serial port ({})".format(self.serial_port))
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if self._collector.collecting:
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self.stop_logging(context)
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self._collector.start()
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def stop_logging(self, context, filename="serial.log", identifier="job"):
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self.logger.debug("Releasing serial port ({})".format(self.serial_port))
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if self._collector.collecting:
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self._collector.stop()
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outpath = os.path.join(context.output_directory, filename)
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self._collector.get_trace(outpath)
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context.add_artifact("{}_serial_log".format(identifier),
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outpath, kind="log")
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def on_run_start(self, context):
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self.start_logging(context)
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def before_job_queue_execution(self, context):
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self.stop_logging(context, "preamble_serial.log", "preamble")
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def after_job_queue_execution(self, context):
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self.start_logging(context)
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def on_run_end(self, context):
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self.stop_logging(context, "postamble_serial.log", "postamble")
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def on_job_start(self, context):
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self.start_logging(context)
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def on_job_end(self, context):
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self.stop_logging(context)
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@hostside
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def before_reboot(self, context):
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self.stop_logging(context)
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