diff options
Diffstat (limited to 'lib/lennart/SigrokCLIInterface.py')
-rw-r--r-- | lib/lennart/SigrokCLIInterface.py | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/lib/lennart/SigrokCLIInterface.py b/lib/lennart/SigrokCLIInterface.py new file mode 100644 index 0000000..873b226 --- /dev/null +++ b/lib/lennart/SigrokCLIInterface.py @@ -0,0 +1,78 @@ +import subprocess +import time + +from dfatool.lennart.SigrokInterface import SigrokInterface + + +class SigrokCLIInterface(SigrokInterface): + def __init__( + self, + bin_temp_file="temp/out.bin", + sample_rate=100_000, + sample_count=1_000_000, + fake=False, + ): + """ + creates SigrokCLIInterface object. Uses the CLI Interface (Command: sigrok-cli) + + :param bin_temp_file: temporary file for binary output + :param sample_rate: The sample rate of the Logic analyzer + :param sample_count: The sample count of the Logic analyzer + :param fake: if it should use existing data + """ + super(SigrokCLIInterface, self).__init__(sample_rate, sample_count) + self.fake = fake + self.bin_temp_file = bin_temp_file + self.sigrok_cli_thread = None + + def forceStopMeasure(self): + """ + Force stopping measure, sometimes needs pkill for killing definitly + :return: None + """ + self.sigrok_cli_thread.send_signal(subprocess.signal.SIGKILL) + stdout, stderr = self.sigrok_cli_thread.communicate(timeout=15) + time.sleep(5) + # TODO not nice solution, make better + import os + + os.system("pkill -f sigrok") + self.runOpenAnalyze() + + def runMeasure(self): + """ + starts the measurement, with waiting for done + """ + if not self.fake: + self.runMeasureAsynchronous() + self.waitForAsynchronousMeasure() + + def runMeasureAsynchronous(self): + """ + starts the measurement, not waiting for done + """ + shellcommand = ( + 'sigrok-cli --output-file %s --output-format binary --samples %s -d %s --config "samplerate=%s Hz"' + % (self.bin_temp_file, self.sample_count, self.driver, self.sample_rate) + ) + self.sigrok_cli_thread = subprocess.Popen(shellcommand, shell=True) + + def waitForAsynchronousMeasure(self): + """ + Wait until is command call is done + """ + if not self.fake: + self.sigrok_cli_thread.wait() + self.runOpenAnalyze() + + def runOpenAnalyze(self): + """ + Opens the generated binary file and parses it byte by byte + + """ + in_file = open(self.bin_temp_file, "rb") # opening for [r]eading as [b]inary + data = in_file.read() # if you only wanted to read 512 bytes, do .read(512) + in_file.close() + + for x in data: + self.analyzeData(x) |