Add a script to control KX2 filters

scripts/kxfilter

@@ -0,0 +1,139 @@
+#! /usr/bin/env python3
+import argparse
+import sys
+import logging
+import serial
+
+logger = logging.getLogger(__name__)
+
+
+def set_apf(s: serial.Serial, state: str) -> None:
+    if state == "on":
+        s.write(b"AP1;")
+    elif state == "off":
+        s.write(b"AP0;")
+        
+def set_nb(s: serial.Serial, state: str) -> None:
+    if state == "on":
+        s.write(b"NB1;")
+    elif state == "off":
+        s.write(b"NB0;")
+    else:
+        s.write("NL{:0>2}00;".format(state).encode("ascii"))
+        s.write(b"NB1;")
+        
+def set_preamp(s: serial.Serial, state: str) -> None:
+    if state == "on":
+        s.write(b"PA1;")
+    elif state == "off":
+        s.write(b"PA0;")
+        
+def set_attenuator(s: serial.Serial, state: str) -> None:
+    if state == "on":
+        s.write(b"RA01;")
+    elif state == "off":
+        s.write(b"RA00;")
+        
+def set_filter_bandwidth(s: serial.Serial, bandwidth: float) -> None:
+    s.write("BW{:0>4};".format(int(bandwidth * 100)).encode("ascii"))
+
+def main() -> int:
+    # Handle program arguments
+    ap = argparse.ArgumentParser(
+        prog="kxfilter", description="Change filter settings on a KX2 or KX3"
+    )
+    ap.add_argument(
+        "--audio-peaking-filter",
+        "--apf",
+        help="Control the Audio Peaking Filter",
+        choices=["on", "off"],
+    )
+    ap.add_argument(
+        "--noise-blanker",
+        "--nb",
+        help="Control the noise blanker",
+        choices=["on", "off"] + [str(x) for x in range(0, 16)],
+    )
+    ap.add_argument(
+        "--pre-amp", "--pa", help="Control the pre-amp", choices=["on", "off"]
+    )
+    ap.add_argument(
+        "--attenuator", "--att", help="Control the attenuator", choices=["on", "off"]
+    )
+    ap.add_argument(
+        "--filter-bandwidth",
+        "--bw",
+        help="Filter bandwidth",
+        type=float,
+        choices=[
+            0.05,
+            0.10,
+            0.15,
+            0.20,
+            0.25,
+            0.30,
+            0.35,
+            0.40,
+            0.45,
+            0.5,
+            0.6,
+            0.7,
+            0.8,
+            0.9,
+            1.0,
+            1.2,
+            1.4,
+            1.6,
+            2.0,
+            2.4,
+            2.8,
+        ],
+    )
+    ap.add_argument("--device", "-d", help="Serial device", default="/dev/ttyUSB0")
+    ap.add_argument("--baud", "-b", help="Serial baud rate", default=38400, type=int)
+    ap.add_argument(
+        "-v", "--verbose", help="Enable verbose logging", action="store_true"
+    )
+    args = ap.parse_args()
+
+    # Configure logging
+    logging.basicConfig(
+        level=logging.DEBUG if args.verbose else logging.INFO,
+        format="%(levelname)s:	%(message)s",
+        stream=sys.stderr,
+    )
+
+    # Connect to the radio
+    logger.debug(f"Connecting to radio: {args.device}")
+    serial_conn = serial.Serial(args.device, args.baud)
+    
+    # Handle APF
+    if args.audio_peaking_filter:
+        logger.info(f"Setting APF: {args.audio_peaking_filter}")
+        set_apf(serial_conn, args.audio_peaking_filter)
+        
+    # Handle NB
+    if args.noise_blanker:
+        logger.info(f"Setting Noise Blanker: {args.noise_blanker}")
+        set_nb(serial_conn, args.noise_blanker)
+        
+    # Handle PA
+    if args.pre_amp:
+        logger.info(f"Setting Pre-Amp: {args.pre_amp}")
+        set_preamp(serial_conn, args.pre_amp)
+        
+    # Handle RX ATT
+    if args.attenuator:
+        logger.info(f"Setting RX Attenuator: {args.attenuator}")
+        set_attenuator(serial_conn, args.attenuator)
+        
+    # Handle filter bandwidth
+    if args.filter_bandwidth:
+        logger.info(f"Setting Filter Bandwidth: {args.filter_bandwidth}")
+        set_filter_bandwidth(serial_conn, args.filter_bandwidth)
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())