Add scripts to monkey about with NMEA commands

examples/cmd.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+import time
+import sys
+
+from pa1010d import PA1010D
+
+
+"""
+Run raw commands against the PA1010D GPS and return the respones.
+
+Eg:
+    PMTK605 = Query Firmware Release Info
+    PMTK430 = Query Datum
+    PMTK414 = Query NMEA Output Frequency
+    PMTK400 = Query Update Rate
+    PMTK225,<1 or 0> = Enable/Disable PPS
+"""
+
+def timeout(err=None, timeout=5.0):
+    if err is None:
+        err = "Timed out!"
+    t_start = time.time()
+    while time.time() - t_start < timeout:
+        yield
+    raise TimeoutError(err)
+
+
+responses = {
+}
+
+if len(sys.argv) < 2:
+    print(f"Usage: {sys.argv[0]} <command>")
+    sys.exit()
+
+command = sys.argv[1]
+response = responses.get(command, f"$PMTK{int(command[4:]) + 100}")
+
+gps = PA1010D()
+
+gps.update()
+
+gps.send_command(sys.argv[1])
+
+if response:
+    print(f"Waiting for {response}...")
+    for t in timeout("Timed out waiting for command response."):
+        message = gps.read_sentence()
+        if message.startswith(response):
+            print(message)
+            break

examples/pps.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+import time
+import sys
+
+from pa1010d import PA1010D
+
+
+if len(sys.argv) < 2:
+    print(f"Usage: {sys.argv[0]} <on/off>")
+    sys.exit()
+
+gps = PA1010D()
+
+if sys.argv[1] == "on":
+    gps.send_command("PMTK255,1")
+else:
+    gps.send_command("PMTK255,0")
+
+result = gps.update()
+
+print("OK" if result else "Uh oh!")