Add support for NanoVNA F V3 for reaching valid data points upto 801 (#751)

* add nanovna-f v3  support

src/NanoVNASaver/Hardware/Hardware.py

@@ -30,6 +30,7 @@ from NanoVNASaver.Hardware.JNCRadio_VNA_3G import JNCRadio_VNA_3G
 from NanoVNASaver.Hardware.NanoVNA import NanoVNA
 from NanoVNASaver.Hardware.NanoVNA_F import NanoVNA_F
 from NanoVNASaver.Hardware.NanoVNA_F_V2 import NanoVNA_F_V2
+from NanoVNASaver.Hardware.NanoVNA_F_V3 import NanoVNA_F_V3
 from NanoVNASaver.Hardware.NanoVNA_H import NanoVNA_H
 from NanoVNASaver.Hardware.NanoVNA_H4 import NanoVNA_H4
 from NanoVNASaver.Hardware.NanoVNA_V2 import NanoVNA_V2
@@ -58,6 +59,7 @@ NAME2DEVICE = {
     "H4": NanoVNA_H4,
     "H": NanoVNA_H,
     "F_V2": NanoVNA_F_V2,
+    "F_V3": NanoVNA_F_V3,
     "F": NanoVNA_F,
     "NanoVNA": NanoVNA,
     "tinySA": TinySA,
@@ -140,12 +142,10 @@ def get_VNA(iface: Interface) -> VNA:
     # serial_port.timeout = TIMEOUT
     return NAME2DEVICE[iface.comment](iface)
 
-
 def get_comment(iface: Interface) -> str:
     logger.info("Finding correct VNA type...")
     with iface.lock:
         vna_version = detect_version(iface)
-
     if vna_version == "v2":
         return "S-A-A-2"
 
@@ -156,6 +156,7 @@ def get_comment(iface: Interface) -> str:
         ("NanoVNA-H 4", "H4"),
         ("NanoVNA-H", "H"),
         ("NanoVNA-F_V2", "F_V2"),
+        ("NanoVNA-F_V3", "F_V3"),
         ("NanoVNA-F", "F"),
         ("NanoVNA", "NanoVNA"),
         ("tinySA4", "tinySA_Ultra"),

src/NanoVNASaver/Hardware/NanoVNA_F_V3.py

@@ -0,0 +1,68 @@
+#  NanoVNASaver
+#
+#  A python program to view and export Touchstone data from a NanoVNA
+#  Copyright (C) 2019, 2020  Rune B. Broberg
+#  Copyright (C) 2020,2021 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 serial
+from PyQt6.QtGui import QImage, QPixmap
+
+from NanoVNASaver.Hardware.NanoVNA import NanoVNA
+from NanoVNASaver.Hardware.Serial import Interface
+
+logger = logging.getLogger(__name__)
+
+
+class NanoVNA_F_V3(NanoVNA):
+    name = "NanoVNA-F_V3"
+    screenwidth = 800
+    screenheight = 480
+    valid_datapoints = (101, 11, 51, 201, 301, 401, 501, 601, 701, 801)
+    sweep_points_min = 11
+    sweep_points_max = 801
+
+    def __init__(self, iface: Interface):
+        super().__init__(iface)
+        self.sweep_max_freq_Hz = 6.3e9
+
+    def getScreenshot(self) -> QPixmap:
+        logger.debug("Capturing screenshot...")
+        if not self.connected():
+            return QPixmap()
+        try:
+            rgba_array = self._capture_data()
+            image = QImage(
+                rgba_array,
+                self.screenwidth,
+                self.screenheight,
+                QImage.Format.Format_RGB16,
+            )
+            logger.debug("Captured screenshot")
+            return QPixmap(image)
+        except serial.SerialException as exc:
+            logger.exception("Exception while capturing screenshot: %s", exc)
+        return QPixmap()
+    
+    def read_features(self):
+        super().read_features()
+        result = " ".join(self.exec_command("help")).split()
+        if "sn:" or "SN:" in result:
+            self.features.add("SN")
+            self.SN = self.getSerialNumber()
+            
+    def getSerialNumber(self) -> str:
+        return " ".join(list(self.exec_command("SN"))) if 'SN:' in " ".join(self.exec_command("help")).split() else " ".join(list(self.exec_command("sn")))