Add AU915 frequency plan support

Author: johanstokking

src/TheThingsNetwork.cpp

@@ -659,6 +659,30 @@ void TheThingsNetwork::configureUS915(uint8_t fsb)
   sendMacSet(MAC_PWRIDX, TTN_PWRIDX_US915);
 }
 
+void TheThingsNetwork::configureAU915(uint8_t fsb)
+{
+  uint8_t ch;
+  uint8_t chLow = fsb > 0 ? (fsb - 1) * 8 : 0;
+  uint8_t chHigh = fsb > 0 ? chLow + 7 : 71;
+  uint8_t ch500 = fsb + 63;
+  for (ch = 0; ch < 72; ch++)
+  {
+    if (ch == ch500 || (ch <= chHigh && ch >= chLow))
+    {
+      sendChSet(MAC_CHANNEL_STATUS, ch, "on");
+      if (ch < 63)
+      {
+        sendChSet(MAC_CHANNEL_DRRANGE, ch, "0 3");
+      }
+    }
+    else
+    {
+      sendChSet(MAC_CHANNEL_STATUS, ch, "off");
+    }
+  }
+  sendMacSet(MAC_PWRIDX, TTN_PWRIDX_AU915);
+}
+
 void TheThingsNetwork::configureAS920_923()
 {
   /* RN2903AS 1.0.3rc9 defaults
@@ -759,6 +783,9 @@ void TheThingsNetwork::configureChannels(uint8_t fsb)
   case TTN_FP_US915:
     configureUS915(fsb);
     break;
+  case TTN_FP_AU915:
+    configureAU915(fsb);
+    break;
   case TTN_FP_AS920_923:
     configureAS920_923();
     break;
@@ -784,6 +811,7 @@ bool TheThingsNetwork::setSF(uint8_t sf)
   case TTN_FP_AS920_923:
   case TTN_FP_AS923_925:
   case TTN_FP_KR920_923:
+  case TTN_FP_AU915:
     dr = 12 - sf;
     break;
   case TTN_FP_US915:

src/TheThingsNetwork.h

@@ -14,6 +14,7 @@
 
 #define TTN_PWRIDX_EU868 "1"
 #define TTN_PWRIDX_US915 "5"
+#define TTN_PWRIDX_AU915 "5"
 #define TTN_PWRIDX_AS920_923 "1" // TODO: should be 0, but the current RN2903AS firmware doesn't accept that value (probably still using EU868: 1=14dBm)
 #define TTN_PWRIDX_AS923_925 "1" // TODO: should be 0
 #define TTN_PWRIDX_KR920_923 "1" // TODO: should be 0
@@ -34,6 +35,7 @@ enum ttn_fp_t
 {
   TTN_FP_EU868,
   TTN_FP_US915,
+  TTN_FP_AU915,
   TTN_FP_AS920_923,
   TTN_FP_AS923_925,
   TTN_FP_KR920_923
@@ -63,6 +65,7 @@ class TheThingsNetwork
   void autoBaud();
   void configureEU868();
   void configureUS915(uint8_t fsb);
+  void configureAU915(uint8_t fsb);
   void configureAS920_923();
   void configureAS923_925();
   void configureKR920_923();