Added telemetryparameters class to generate parameter string

aprslib/packets/__init__.py

@@ -1,3 +1,4 @@
 from aprslib.packets.position import PositionReport
 from aprslib.packets.telemetry import TelemetryReport
 from aprslib.packets.telemetryunitlabels import TelemetryUnitLabelsReport
+from aprslib.packets.telemetryparameters import TelemetryParametersReport

aprslib/packets/telemetryparameters.py

@@ -0,0 +1,43 @@
+from aprslib.packets.base import APRSPacket
+
+class TelemetryParametersReport(APRSPacket):
+    format = 'raw'
+    telemetrystation = "N0CALL"
+    a1 = "AN1"
+    a2 = "AN2"
+    a3 = "AN3"
+    a4 = "AN4"
+    a5 = "AN5"
+    b1 = "D1"
+    b2 = "D2"
+    b3 = "D3"
+    b4 = "D4"
+    b5 = "D5"
+    b6 = "D6"
+    b7 = "D7"
+    b8 = "D8"
+
+    def _serialize_body(self):
+
+        body = [
+            ':{0} :PARM.'.format(self.telemetrystation),  # packet type
+            self.a1,
+            self.a2,
+            self.a3,
+            self.a4,
+            self.a5,
+            self.b1,
+            self.b2,
+            self.b3,
+            self.b4,
+            self.b5,
+            self.b6,
+            self.b7,
+            self.b8,
+        ]
+        tmpbody = ",".join(body)
+        badcomma = tmpbody.index(",")
+
+        # remove static but erroneous comma between PARM. and a1 value
+        # Position can vary due to callsign
+        return tmpbody[:badcomma] + tmpbody[badcomma+1:]