begin support for countries besides the US

src/MeshRadio.h

@@ -11,12 +11,43 @@
 // US channel settings
 #define CH0_US          903.08f // MHz
 #define CH_SPACING_US   2.16f // MHz
+#define NUM_CHANNELS_US 13
+
+// EU channel settings
+#define CH0_EU          865.2f // MHz
+#define CH_SPACING_EU   0.3f // MHz
+#define NUM_CHANNELS_EU 10
+
+// CN channel settings
+#define CH0_CN          470f // MHz
+#define CH_SPACING_CN   2.0f // MHz FIXME, this is just a guess for 470-510
+#define NUM_CHANNELS_CN 20
+
+// CN channel settings
+#define CH0_JP          920f // MHz
+#define CH_SPACING_JP   0.5f // MHz FIXME, this is just a guess for 920-925
+#define NUM_CHANNELS_JP 10
 
 // FIXME add defs for other regions and use them here
+#ifdef HW_VERSION_US
 #define CH0 CH0_US
 #define CH_SPACING CH_SPACING_US
-#define NUM_CHANNELS Constants_NumChannels
-
+#define NUM_CHANNELS NUM_CHANNELS_US
+#elif defined(HW_VERSION_EU)
+#define CH0 CH0_EU
+#define CH_SPACING CH_SPACING_EU
+#define NUM_CHANNELS NUM_CHANNELS_EU
+#elif defined(HW_VERSION_CN)
+#define CH0 CH0_CN
+#define CH_SPACING CH_SPACING_CN
+#define NUM_CHANNELS NUM_CHANNELS_CN
+#elif defined(HW_VERSION_JP)
+#define CH0 CH0_JP
+#define CH_SPACING CH_SPACING_JP
+#define NUM_CHANNELS NUM_CHANNELS_JP
+#else
+#error "HW_VERSION not set"
+#endif 
 
 #define MAX_TX_QUEUE 8 // max number of packets which can be waiting for transmission