kopia lustrzana https://github.com/NanoVNA-Saver/nanovna-saver
96 wiersze
3.9 KiB
Python
96 wiersze
3.9 KiB
Python
# NanoVNASaver
|
|
#
|
|
# A python program to view and export Touchstone data from a NanoVNA
|
|
# Copyright (C) 2019, 2020 Rune B. Broberg
|
|
# Copyright (C) 2020 NanoVNA-Saver Authors
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
import logging
|
|
import struct
|
|
|
|
import serial
|
|
import numpy as np
|
|
from PyQt5 import QtGui
|
|
|
|
from NanoVNASaver.Hardware.NanoVNA import NanoVNA
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class NanoVNA_F(NanoVNA):
|
|
name = "NanoVNA-F"
|
|
screenwidth = 800
|
|
screenheight = 480
|
|
|
|
def getScreenshot(self) -> QtGui.QPixmap:
|
|
logger.debug("Capturing screenshot...")
|
|
if not self.serial.is_open:
|
|
return QtGui.QPixmap()
|
|
if self.app.serialLock.acquire():
|
|
try:
|
|
data = "a"
|
|
while data != "":
|
|
data = self.serial.readline().decode('ascii')
|
|
self.serial.write("capture\r".encode('ascii'))
|
|
timeout = self.serial.timeout
|
|
self.serial.timeout = 4
|
|
self.serial.readline()
|
|
image_data = self.serial.read(
|
|
self.screenwidth * self.screenheight * 2)
|
|
self.serial.timeout = timeout
|
|
rgb_data = struct.unpack(
|
|
f"<{self.screenwidth * self.screenheight}H", image_data)
|
|
rgb_array = np.array(rgb_data, dtype=np.uint32)
|
|
rgba_array = (0xFF000000 +
|
|
((rgb_array & 0xF800) << 8) + # G?!
|
|
((rgb_array & 0x07E0) >> 3) + # B
|
|
((rgb_array & 0x001F) << 11)) # G
|
|
|
|
unwrapped_array = np.empty(
|
|
self.screenwidth*self.screenheight,
|
|
dtype=np.uint32)
|
|
for y in range(self.screenheight // 2):
|
|
for x in range(self.screenwidth // 2):
|
|
unwrapped_array[
|
|
2 * x + 2 * y * self.screenwidth
|
|
] = rgba_array[x + y * self.screenwidth]
|
|
unwrapped_array[
|
|
(2 * x) + 1 + 2 * y * self.screenwidth
|
|
] = rgba_array[
|
|
x + (self.screenheight//2 + y) * self.screenwidth
|
|
]
|
|
unwrapped_array[
|
|
2 * x + (2 * y + 1) * self.screenwidth
|
|
] = rgba_array[
|
|
x + self.screenwidth // 2 + y * self.screenwidth
|
|
]
|
|
unwrapped_array[
|
|
(2 * x) + 1 + (2 * y + 1) * self.screenwidth
|
|
] = rgba_array[
|
|
x + self.screenwidth // 2 +
|
|
(self.screenheight//2 + y) * self.screenwidth
|
|
]
|
|
|
|
image = QtGui.QImage(
|
|
unwrapped_array,
|
|
self.screenwidth, self.screenheight,
|
|
QtGui.QImage.Format_ARGB32)
|
|
logger.debug("Captured screenshot")
|
|
return QtGui.QPixmap(image)
|
|
except serial.SerialException as exc:
|
|
logger.exception("Exception while capturing screenshot: %s", exc)
|
|
finally:
|
|
self.app.serialLock.release()
|
|
return QtGui.QPixmap()
|