Add T-Beam BPF - 144-148 Mhz LoRa @ ~37 dBm (5 Watts) (#10558)

* Add T-Beam BPF (144-148 Mhz LoRa)

* minor correction to fix compiler warnings

* Add T-Beam BPF (144-148 Mhz LoRa)

* minor correction to fix compiler warnings

* Add ITU regions for this device and make GPS work.

* Switch pin after defining it as output

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Lora CS is indeed 1, SD Card CS is 10

* Include the back option.

* Fix compilation with pioarduino (USB_MODE)

* Default ham to narrow_fast

* Default PROFILE_HAM to slot 17

This is an appropriate default in the USA but not the EU.

The slot override really should follow the region itself, not the regionprofile.

* Fix for ITU 2/3 split

* Add ITU region options to MenuAction enum

* Add HAS_HAM_2M definition to variant headers for 2M support

* Re-add PROFILE_HAM regionprofile

Accidentally removed in last merge

* Trunk fmt

* Initial default slots

* Switch to TinyFast

Still need to flesh out the default channels

* Adjust slotOverrides for TinyFast

* RadioLib doesn't accept 15.625 kHz

Use 15.6 instead

* Set RF95 pins for T-Beam Supreme

May cause regressions!!

* Remove other-variant changes (BPF-only)

These have been moved to other PRs

* Remove mismatch guarding (we need a more comprehensive approach)

* Add comment back

* Add template for PA curve

* This is a 5-6W radio!! Add TX_GAIN_LORA

* Trunk fmt because NomDeTom hates emdashes

---------

Co-authored-by: Thomas Göttgens <tgoettgens@gmail.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

src/Power.cpp

@@ -1401,6 +1401,22 @@ bool Power::axpChipInit()
             PMU->disablePowerOutput(XPOWERS_DLDO1); // Invalid power channel, it does not exist
             PMU->disablePowerOutput(XPOWERS_DLDO2); // Invalid power channel, it does not exist
             PMU->disablePowerOutput(XPOWERS_VBACKUP);
+        } else if (HW_VENDOR == meshtastic_HardwareModel_TBEAM_BPF) {
+            // T-Beam BPF rail map (per schematic LilyGo_TBeam_BPF r2025-05-08):
+            //   DCDC1  -> ESP32 + OLED 3V3 (always on, protected)
+            //   ALDO2  -> MicroSD 3V3    (OFF at reset, must enable)
+            //   ALDO4  -> L76K GNSS 3V3  (OFF at reset, must enable)
+            //   ALDO1/3, BLDO1/2, DLDO1 -> user headers / unused at boot, leave at reset defaults.
+            // LoRa power is outside the PMU (external P-MOSFET switched by RF95_POWER_EN / IO16).
+            PMU->setPowerChannelVoltage(XPOWERS_ALDO4, 3300);
+            PMU->enablePowerOutput(XPOWERS_ALDO4);
+
+            PMU->setPowerChannelVoltage(XPOWERS_ALDO2, 3300);
+            PMU->enablePowerOutput(XPOWERS_ALDO2);
+
+            // Make sure nothing's driving into an unused rail
+            PMU->disablePowerOutput(XPOWERS_DCDC5);
+            PMU->disablePowerOutput(XPOWERS_DLDO1);
         }
 
         // disable all axp chip interrupt

src/graphics/draw/MenuHandler.cpp

@@ -227,6 +227,16 @@ static void applyLoraRegion(meshtastic_Config_LoRaConfig_RegionCode region, bool
 
 void menuHandler::LoraRegionPicker(uint32_t duration)
 {
+#ifdef HAS_HAM_2M_ONLY
+    // Hardware is restricted to the amateur 2m band - offer only the 2m regions
+    // so the user cannot pick a sub-GHz region the RF path cannot emit or receive.
+    static const LoraRegionOption regionOptions[] = {
+        {"Back", OptionsAction::Back},
+        {"ITU1_2M (144-146)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU1_2M},
+        {"ITU2_2M (144-148)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU2_2M},
+        {"ITU3_2M (144-148)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU3_2M},
+    };
+#else
     static const LoraRegionOption regionOptions[] = {
         {"Back", OptionsAction::Back},
         {"US", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_US},
@@ -265,6 +275,7 @@ void menuHandler::LoraRegionPicker(uint32_t duration)
         {"ITU3_70CM (430-450)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU3_70CM},
 
     };
+#endif
 
     constexpr size_t regionCount = sizeof(regionOptions) / sizeof(regionOptions[0]);
     static std::array<const char *, regionCount> regionLabels{};

src/mesh/NodeDB.cpp

@@ -1960,6 +1960,13 @@ void NodeDB::installDefaultDeviceState()
     memcpy(owner.macaddr, ourMacAddr, sizeof(owner.macaddr));
     owner.has_is_unmessagable = true;
     owner.is_unmessagable = false;
+
+#ifdef HAS_HAM_2M_ONLY
+    // Ham-band-only hardware defaults to licensed operation. The user can still flip this off later
+    // (e.g. a commercial operator on an adjacent allocation who wants to keep encryption on) - we
+    // only set the default here, not on every boot.
+    owner.is_licensed = true;
+#endif
 }
 
 // We reserve a few nodenums for future use

src/mesh/RF95Interface.cpp

@@ -113,6 +113,11 @@ void RF95Interface::setTransmitEnable(bool txon)
 /// \return true if initialisation succeeded.
 bool RF95Interface::init()
 {
+#ifdef RF95_POWER_EN
+    pinMode(RF95_POWER_EN, OUTPUT);
+    digitalWrite(RF95_POWER_EN, HIGH);
+#endif
+
     RadioLibInterface::init();
 
 #if defined(RADIOMASTER_900_BANDIT_NANO) || defined(RADIOMASTER_900_BANDIT)
@@ -335,6 +340,10 @@ bool RF95Interface::sleep()
     setStandby(); // First cancel any active receiving/sending
     lora->sleep();
 
+#ifdef RF95_POWER_EN
+    digitalWrite(RF95_POWER_EN, LOW);
+#endif
+
 #ifdef RF95_FAN_EN
     digitalWrite(RF95_FAN_EN, 0);
 #endif

src/platform/esp32/architecture.h

@@ -198,6 +198,8 @@
 #define HW_VENDOR meshtastic_HardwareModel_T_DECK_PRO
 #elif defined(T_BEAM_1W)
 #define HW_VENDOR meshtastic_HardwareModel_TBEAM_1_WATT
+#elif defined(T_BEAM_BPF)
+#define HW_VENDOR meshtastic_HardwareModel_TBEAM_BPF
 #elif defined(T_LORA_PAGER)
 #define HW_VENDOR meshtastic_HardwareModel_T_LORA_PAGER
 #elif defined(HELTEC_V4)