feat(gat562-30s): add solo build envs, fix joystick/GPS/buzzer/display

- SSD1306Display: track _text_sz in setTextSize(); override getCharWidth()
  and getLineHeight() so line spacing scales with text size (fixes text
  overlap on splash/clock screens at size 2)
- gat562_30s_mesh_kit variant.h: fix PIN_GPS_EN 33→34 (IO2/P1.02 controls
  GPS module power via Q3/Q5 transistors; 33 = BEE_EN = buzzer)
- gat562_30s_mesh_kit variant.h: correct joystick pin comments (P0.xx labels
  were cyclically wrong; pin numbers already correct)
- gat562_30s_mesh_kit target.h/cpp: declare and instantiate joystick_up/down
  under UI_HAS_JOYSTICK_UPDOWN guard (fixes compile error in solo envs)
- gat562_30s_mesh_kit platformio.ini: add solo_ble and solo_dual environments
  with GPS, BLE, joystick up/down, QSPI flash, and buzzer (NonBlockingRTTTL)
- gat562_mesh_watch13 platformio.ini: add solo_ble environment with GPS

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/helpers/ui/SSD1306Display.cpp

@@ -53,6 +53,7 @@ void SSD1306Display::startFrame(Color bkg) {
 }
 
 void SSD1306Display::setTextSize(int sz) {
+  _text_sz = sz;
   display.setTextSize(sz);
 }
 

src/helpers/ui/SSD1306Display.h

@@ -19,6 +19,7 @@ class SSD1306Display : public DisplayDriver {
   Adafruit_SSD1306 display;
   bool _isOn;
   uint8_t _color;
+  int _text_sz = 1;
   RefCountedDigitalPin* _peripher_power;
 
   bool i2c_probe(TwoWire& wire, uint8_t addr);
@@ -31,6 +32,9 @@ public:
   }
   bool begin();
 
+  int getCharWidth()  const override { return 6 * _text_sz; }
+  int getLineHeight() const override { return 8 * _text_sz; }
+
   bool isOn() override { return _isOn; }
   void turnOn() override;
   void turnOff() override;

variants/gat562_30s_mesh_kit/platformio.ini

@@ -112,6 +112,71 @@ lib_deps =
   densaugeo/base64 @ ~1.4.0
   end2endzone/NonBlockingRTTTL@^1.3.0
 
+[env:GAT562_30S_Mesh_Kit_solo_ble]
+extends = GAT562_30S_Mesh_Kit
+board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
+board_upload.maximum_size = 712704
+build_flags =
+  ${GAT562_30S_Mesh_Kit.build_flags}
+  -I examples/companion_radio/ui-new
+  -D DISPLAY_CLASS=SSD1306Display
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D BLE_PIN_CODE=123456
+  -D OFFLINE_QUEUE_SIZE=256
+  -D FIRMWARE_SOLO_BUILD=1
+  -D MESHCORE_VERSION='"1.17"'
+  -D UI_SENSORS_PAGE=1
+  -D UI_HAS_JOYSTICK_UPDOWN=1
+  -D ADVERT_NAME='"@@MAC"'
+  -D QSPIFLASH=1
+  -D ENV_INCLUDE_GPS=1
+  ; -D MESH_PACKET_LOGGING=1
+  ; -D MESH_DEBUG=1
+build_src_filter = ${GAT562_30S_Mesh_Kit.build_src_filter}
+  +<helpers/nrf52/SerialBLEInterface.cpp>
+  +<helpers/ui/buzzer.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${GAT562_30S_Mesh_Kit.lib_deps}
+  adafruit/RTClib @ ^2.1.3
+  densaugeo/base64 @ ~1.4.0
+  end2endzone/NonBlockingRTTTL@^1.3.0
+
+[env:GAT562_30S_Mesh_Kit_solo_dual]
+extends = GAT562_30S_Mesh_Kit
+board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
+board_upload.maximum_size = 712704
+build_flags =
+  ${GAT562_30S_Mesh_Kit.build_flags}
+  -I examples/companion_radio/ui-new
+  -D DISPLAY_CLASS=SSD1306Display
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D BLE_PIN_CODE=123456
+  -D OFFLINE_QUEUE_SIZE=256
+  -D FIRMWARE_SOLO_BUILD=1
+  -D MESHCORE_VERSION='"1.17"'
+  -D UI_SENSORS_PAGE=1
+  -D UI_HAS_JOYSTICK_UPDOWN=1
+  -D ADVERT_NAME='"@@MAC"'
+  -D QSPIFLASH=1
+  -D ENV_INCLUDE_GPS=1
+  -D DUAL_SERIAL=1
+  ; -D MESH_PACKET_LOGGING=1
+  ; -D MESH_DEBUG=1
+build_src_filter = ${GAT562_30S_Mesh_Kit.build_src_filter}
+  +<helpers/nrf52/SerialBLEInterface.cpp>
+  +<helpers/ui/buzzer.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${GAT562_30S_Mesh_Kit.lib_deps}
+  adafruit/RTClib @ ^2.1.3
+  densaugeo/base64 @ ~1.4.0
+  end2endzone/NonBlockingRTTTL@^1.3.0
+
 [env:GAT562_30S_Mesh_Kit_kiss_modem]
 extends = GAT562_30S_Mesh_Kit
 build_src_filter = ${GAT562_30S_Mesh_Kit.build_src_filter}

variants/gat562_30s_mesh_kit/target.cpp

@@ -15,6 +15,10 @@ GAT56230SMeshKitBoard board;
   MomentaryButton joystick_left(JOYSTICK_LEFT, 1000, true, false, false);
   MomentaryButton joystick_right(JOYSTICK_RIGHT, 1000, true, false, false);
   MomentaryButton back_btn(PIN_BACK_BTN, 1000, true, false, true);
+  #ifdef UI_HAS_JOYSTICK_UPDOWN
+    MomentaryButton joystick_up(JOYSTICK_UP, 1000, true, false, false);
+    MomentaryButton joystick_down(JOYSTICK_DOWN, 1000, true, false, false);
+  #endif
 #endif
 
 

variants/gat562_30s_mesh_kit/target.h

@@ -16,6 +16,10 @@
   extern MomentaryButton joystick_left;
   extern MomentaryButton joystick_right;
   extern MomentaryButton back_btn;
+  #ifdef UI_HAS_JOYSTICK_UPDOWN
+    extern MomentaryButton joystick_up;
+    extern MomentaryButton joystick_down;
+  #endif
 #endif
 
 extern GAT56230SMeshKitBoard board;

variants/gat562_30s_mesh_kit/variant.h

@@ -86,10 +86,10 @@ extern "C"
  * Buttons
  */
 #define PIN_BUTTON1             (9) // Menu / User Button
-#define PIN_BUTTON2             (28) // Joystick Up
+#define PIN_BUTTON2             (28) // Joystick Up    (P0.28, IC pin 35)
-#define PIN_BUTTON3             (4) // Joystick Down
+#define PIN_BUTTON3             (4)  // Joystick Down  (P0.04, IC pin 37)
-#define PIN_BUTTON4             (30) // Joystick Left
+#define PIN_BUTTON4             (30) // Joystick Left  (P0.30, IC pin 34)
-#define PIN_BUTTON5             (31) // Joystick Right
+#define PIN_BUTTON5             (31) // Joystick Right (P0.31, IC pin 33)
 #define PIN_BUTTON6             (26) // Joystick Press
 #define PIN_BACK_BTN            PIN_BUTTON1
 #define JOYSTICK_UP             PIN_BUTTON2
@@ -216,7 +216,7 @@ extern "C"
 #define GPS_THREAD_INTERVAL     50
 #define PIN_GPS_TX              PIN_SERIAL1_RX
 #define PIN_GPS_RX              PIN_SERIAL1_TX
-#define PIN_GPS_EN              (33)
+#define PIN_GPS_EN              (34)  // IO2 = P1.02 — GPS module power enable
 #define PIN_GPS_PPS             (17)
 
 #ifdef __cplusplus

variants/gat562_mesh_watch13/platformio.ini

@@ -87,6 +87,45 @@ lib_deps =
   ${GAT562_Mesh_Watch13.lib_deps}
   densaugeo/base64 @ ~1.4.0
 
+[env:GAT562_Mesh_Watch13_solo_ble]
+extends = GAT562_Mesh_Watch13
+board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
+board_upload.maximum_size = 712704
+build_flags =
+  ${GAT562_Mesh_Watch13.build_flags}
+  -I examples/companion_radio/ui-new
+  -D DISPLAY_CLASS=SSD1306Display
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D BLE_PIN_CODE=123456
+  -D OFFLINE_QUEUE_SIZE=256
+  -D FIRMWARE_SOLO_BUILD=1
+  -D MESHCORE_VERSION='"1.17"'
+  -D UI_SENSORS_PAGE=1
+  -D ADVERT_NAME='"@@MAC"'
+  ; GPS — re-enable (base undefines it); Serial1 pins 15/16 from variant
+  -D ENV_INCLUDE_GPS=1
+  -D GPS_BAUD_RATE=9600
+  ; Buzzer available on IO3 (pin 21) — uncomment to enable
+;  -D PIN_BUZZER=21
+;  -D PIN_VIBRATION=36
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${GAT562_Mesh_Watch13.build_src_filter}
+  +<helpers/nrf52/SerialBLEInterface.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<helpers/ui/GenericVibration.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+; If PIN_BUZZER is enabled above, also add:
+;  +<helpers/ui/buzzer.cpp>
+lib_deps =
+  ${GAT562_Mesh_Watch13.lib_deps}
+  adafruit/RTClib @ ^2.1.3
+  densaugeo/base64 @ ~1.4.0
+; If PIN_BUZZER is enabled, also add:
+;  end2endzone/NonBlockingRTTTL@^1.3.0
+
 [env:GAT562_Mesh_Watch13_kiss_modem]
 extends = GAT562_Mesh_Watch13
 build_src_filter = ${GAT562_Mesh_Watch13.build_src_filter}