kopia lustrzana https://github.com/NanoVNA-Saver/nanovna-saver
272 wiersze
8.4 KiB
Python
272 wiersze
8.4 KiB
Python
# NanoVNASaver
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# A python program to view and export Touchstone data from a NanoVNA
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# Copyright (C) 2019. Rune B. Broberg
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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import logging
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import re
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from time import sleep
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from typing import List
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import serial
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from PyQt5 import QtWidgets, QtGui
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logger = logging.getLogger(__name__)
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class VNA:
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name = "VNA"
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def __init__(self, app: QtWidgets.QWidget, serial_port: serial.Serial):
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self.app = app
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self.serial = serial_port
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self.version: Version = Version("0.0.0")
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self.features = set()
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self.validateInput = True
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self.datapoints = 101
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def readFeatures(self) -> List[str]:
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raw_help = self.readFromCommand("help")
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logger.debug("Help command output:")
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logger.debug(raw_help)
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# Detect features from the help command
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if "capture" in raw_help:
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self.features.add("Screenshots")
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return self.features
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# TODO: check return types
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def readFrequencies(self) -> List[int]:
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return []
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def readValues11(self) -> List[str]:
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return []
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def readValues21(self) -> List[str]:
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return []
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def resetSweep(self, start: int, stop: int):
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pass
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def isValid(self):
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return False
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def isDFU(self):
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return False
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def getFeatures(self) -> List[str]:
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return self.features
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def getCalibration(self) -> str:
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return "Unknown"
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def getScreenshot(self) -> QtGui.QPixmap:
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return QtGui.QPixmap()
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def flushSerialBuffers(self):
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if self.app.serialLock.acquire():
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self.serial.write(b"\r\n\r\n")
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sleep(0.1)
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self.serial.reset_input_buffer()
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self.serial.reset_output_buffer()
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sleep(0.1)
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self.app.serialLock.release()
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def readFirmware(self) -> str:
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if self.app.serialLock.acquire():
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result = ""
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try:
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data = "a"
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while data != "":
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data = self.serial.readline().decode('ascii')
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self.serial.write("info\r".encode('ascii'))
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result = ""
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data = ""
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sleep(0.01)
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while data != "ch> ":
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data = self.serial.readline().decode('ascii')
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result += data
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except serial.SerialException as exc:
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logger.exception(
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"Exception while reading firmware data: %s", exc)
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finally:
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self.app.serialLock.release()
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return result
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logger.error("Unable to acquire serial lock to read firmware.")
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return ""
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def readFromCommand(self, command) -> str:
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if self.app.serialLock.acquire():
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result = ""
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try:
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data = "a"
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while data != "":
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data = self.serial.readline().decode('ascii')
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self.serial.write((command + "\r").encode('ascii'))
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result = ""
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data = ""
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sleep(0.01)
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while data != "ch> ":
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data = self.serial.readline().decode('ascii')
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result += data
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except serial.SerialException as exc:
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logger.exception(
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"Exception while reading %s: %s", command, exc)
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finally:
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self.app.serialLock.release()
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return result
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logger.error("Unable to acquire serial lock to read %s", command)
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return ""
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def readValues(self, value) -> List[str]:
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logger.debug("VNA reading %s", value)
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if self.app.serialLock.acquire():
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try:
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data = "a"
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while data != "":
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data = self.serial.readline().decode('ascii')
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# Then send the command to read data
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self.serial.write(str(value + "\r").encode('ascii'))
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result = ""
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data = ""
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sleep(0.05)
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while data != "ch> ":
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data = self.serial.readline().decode('ascii')
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result += data
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values = result.split("\r\n")
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except serial.SerialException as exc:
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logger.exception(
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"Exception while reading %s: %s", value, exc)
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return []
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finally:
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self.app.serialLock.release()
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logger.debug(
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"VNA done reading %s (%d values)",
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value, len(values)-2)
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return values[1:-1]
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logger.error("Unable to acquire serial lock to read %s", value)
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return []
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def writeSerial(self, command):
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if not self.serial.is_open:
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logger.warning("Writing without serial port being opened (%s)",
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command)
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return
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if self.app.serialLock.acquire():
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try:
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self.serial.write(str(command + "\r").encode('ascii'))
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self.serial.readline()
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except serial.SerialException as exc:
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logger.exception(
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"Exception while writing to serial port (%s): %s",
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command, exc)
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finally:
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self.app.serialLock.release()
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return
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def setSweep(self, start, stop):
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self.writeSerial("sweep " + str(start) + " " + str(stop) + " " + str(self.datapoints))
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# TODO: should be dropped and the serial part should be a connection class which handles
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# unconnected devices
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class InvalidVNA(VNA):
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name = "Invalid"
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def __init__(self, app: QtWidgets.QWidget, serial_port: serial.Serial):
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super().__init__(app, serial_port)
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self.datapoints = 0
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def setSweep(self, start, stop):
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return
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def resetSweep(self, start, stop):
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return
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def writeSerial(self, command):
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return
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def readFirmware(self):
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return
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def readFrequencies(self) -> List[int]:
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return []
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def readValues11(self) -> List[str]:
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return []
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def readValues21(self) -> List[str]:
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return []
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def readValues(self, value):
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return
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def flushSerialBuffers(self):
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return
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# TODO: should go to Settings.py and be generalized
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class Version:
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major = 0
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minor = 0
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revision = 0
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note = ""
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version_string = ""
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def __init__(self, version_string):
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self.version_string = version_string
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results = re.match(
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r"(.*\s+)?(\d+)\.(\d+)\.(\d+)(.*)",
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version_string)
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if results:
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self.major = int(results.group(2))
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self.minor = int(results.group(3))
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self.revision = int(results.group(4))
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self.note = results.group(5)
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logger.debug(
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"Parsed version as \"%d.%d.%d%s\"",
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self.major, self.minor, self.revision, self.note)
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def __gt__(self, other: "Version") -> bool:
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if self.major > other.major:
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return True
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if self.major < other.major:
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return False
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if self.minor > other.minor:
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return True
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if self.minor < other.minor:
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return False
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if self.revision > other.revision:
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return True
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return False
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def __lt__(self, other: "Version") -> bool:
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return other > self
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def __ge__(self, other: "Version") -> bool:
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return self > other or self == other
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def __le__(self, other: "Version") -> bool:
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return self < other or self == other
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def __eq__(self, other: "Version") -> bool:
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return (
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self.major == other.major and
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self.minor == other.minor and
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self.revision == other.revision and
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self.note == other.note)
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def __str__(self) -> str:
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return f"{self.major}.{self.minor}.{self.revision}{self.note}"
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