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Signed-off-by: Travis F. Collins <travis.collins@analog.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| # -*- coding: utf-8 -*- | ||
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| import os | ||
| import pathlib | ||
| import signal | ||
| import socket | ||
| import subprocess | ||
| import time | ||
| from shutil import which | ||
|
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| class iio_emu_manager: | ||
| def __init__( | ||
| self, xml_path: str, auto: bool = True, rx_dev: str = None, tx_dev: str = None, | ||
| ): | ||
| self.xml_path = xml_path | ||
| self.rx_dev = rx_dev | ||
| self.tx_dev = tx_dev | ||
| self.current_device = None | ||
| self.auto = auto | ||
| self.data_devices = None | ||
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| iio_emu = which("iio-emu") is None | ||
| if iio_emu: | ||
| raise Exception("iio-emu not found on path") | ||
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| hostname = socket.gethostname() | ||
| self.local_ip = socket.gethostbyname(hostname) | ||
| self.uri = f"ip:{self.local_ip}" | ||
| self.p = None | ||
| if os.getenv("IIO_EMU_URI"): | ||
| self.uri = os.getenv("IIO_EMU_URI") | ||
| print('IIO_EMU_PREFIX', os.getenv("IIO_EMU_PREFIX")) | ||
| if os.getenv("IIO_EMU_PREFIX"): | ||
| self.prefix = os.getenv("IIO_EMU_PREFIX") | ||
| self.prefix = self.prefix.replace("'","") | ||
| print(f"Using IIO_EMU_PREFIX: {self.prefix}") | ||
| else: | ||
| self.prefix = None | ||
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| def __del__(self): | ||
| if self.p: | ||
| self.stop() | ||
|
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| def start(self): | ||
| with open("data.bin", "w"): | ||
| pass | ||
| cmd = ["iio-emu", "generic", self.xml_path] | ||
| if self.prefix: | ||
| cmd = [self.prefix] + cmd | ||
| if self.data_devices: | ||
| for dev in self.data_devices: | ||
| cmd.append(f"{dev}@data.bin") | ||
| print(cmd) | ||
| self.p = subprocess.Popen(' '.join(cmd), shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, preexec_fn=os.setsid) | ||
| time.sleep(3) # wait for server to boot | ||
| # With shell stopping or checking if the process is stopped is hard | ||
| # It should have a process group if its running. | ||
| try: | ||
| pidg = os.getpgid(self.p.pid) | ||
| failed_to_start = False | ||
| except ProcessLookupError: | ||
| failed_to_start = True # stop multiple exceptions appearing | ||
|
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| if failed_to_start: | ||
| self.p = None | ||
| raise Exception("iio-emu failed to start... exiting") | ||
|
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| def stop(self): | ||
| if self.p: | ||
| os.killpg(os.getpgid(self.p.pid), signal.SIGTERM) | ||
| self.p = None |