Add HAS_HAM_2M definition to variant headers for 2M support

src/mesh/RadioInterface.cpp

@@ -564,6 +564,10 @@ std::unique_ptr<RadioInterface> initLoRa()
                             config.lora.region == meshtastic_Config_LoRaConfig_RegionCode_ITU3_2M;
 #ifdef HAS_HAM_2M_ONLY
     const bool mismatch = !is2mRegion && config.lora.region != meshtastic_Config_LoRaConfig_RegionCode_UNSET;
+#elif defined(HAS_HAM_2M) && !defined(HAS_HAM_2M_ONLY)
+    // If hardware specifies HAS_HAM_2M without HAS_HAM_2M_ONLY, it supports 2m but isn't restricted to it.
+    // In this case, we allow any region.
+    const bool mismatch = false;
 #else
     const bool mismatch = is2mRegion;
 #endif

variants/esp32/tlora_v2_1_16/variant.h

@@ -2,6 +2,9 @@
 #define ADC_CHANNEL ADC_CHANNEL_7
 #define BATTERY_SENSE_SAMPLES 30
 
+// A variant has 2M support
+#define HAS_HAM_2M 1
+
 // ratio of voltage divider = 2.0 (R42=100k, R43=100k)
 #define ADC_MULTIPLIER 2
 

variants/esp32s3/t-beam-bpf/variant.h

@@ -1,6 +1,9 @@
 // LilyGo T-Beam-BPF variant.h
 // Configuration based on LilyGO utilities.h and RF documentation
 
+// Hardware has 2M support
+#define HAS_HAM_2M 1
+
 // Hardware is restricted to the amateur 2m band (144-148 MHz).
 #define HAS_HAM_2M_ONLY 1
 

variants/esp32s3/tbeam-s3-core/variant.h

@@ -9,6 +9,9 @@
 #define BUTTON_PIN 0 // The middle button GPIO on the T-Beam S3
 //  #define EXT_NOTIFY_OUT 13 // Default pin to use for Ext Notify Module.
 
+// A variant has 2M support
+#define HAS_HAM_2M 1
+
 // TTGO uses a common pinout for their SX1262 vs RF95 modules - both can be enabled and we will probe at runtime for RF95 and if
 // not found then probe for SX1262
 #define USE_SX1262