From e076e797e68ff9099f1ed22b02c3194f899e04ef Mon Sep 17 00:00:00 2001
From: seagull9000 <jmillington9000@gmail.com>
Date: Wed, 7 May 2025 21:40:27 +1200
Subject: [PATCH] Heltec Wireless Tracker support

---
 examples/companion_radio/main.cpp |  4 ++-
 src/helpers/HeltecV3Board.h       |  7 +++--
 variants/heltec_v3/platformio.ini | 43 ++++++++++++++++++++++++++++---
 3 files changed, 48 insertions(+), 6 deletions(-)

diff --git a/examples/companion_radio/main.cpp b/examples/companion_radio/main.cpp
index 88652697..d43f47bb 100644
--- a/examples/companion_radio/main.cpp
+++ b/examples/companion_radio/main.cpp
@@ -59,7 +59,9 @@
 
 #ifdef DISPLAY_CLASS
   #include "UITask.h"
-  #ifdef ST7789
+  #ifdef ST7735
+    #include <helpers/ui/ST7735Display.h>
+  #elif ST7789
     #include <helpers/ui/ST7789Display.h>
   #elif defined(HAS_GxEPD)
     #include <helpers/ui/GxEPDDisplay.h>
diff --git a/src/helpers/HeltecV3Board.h b/src/helpers/HeltecV3Board.h
index 605bfe21..fd6352ec 100644
--- a/src/helpers/HeltecV3Board.h
+++ b/src/helpers/HeltecV3Board.h
@@ -3,6 +3,7 @@
 #include <Arduino.h>
 
 // LoRa radio module pins for Heltec V3
+// Also for Heltec Wireless Tracker
 #define  P_LORA_DIO_1   14
 #define  P_LORA_NSS      8
 #define  P_LORA_RESET   RADIOLIB_NC
@@ -13,10 +14,12 @@
 
 // built-ins
 #define  PIN_VBAT_READ    1
-#define  PIN_ADC_CTRL    37
+#ifndef PIN_ADC_CTRL              // set in platformio.ini for Heltec Wireless Tracker (2)
+  #define  PIN_ADC_CTRL    37
+#endif
 #define  PIN_ADC_CTRL_ACTIVE    LOW
 #define  PIN_ADC_CTRL_INACTIVE  HIGH
-#define  PIN_LED_BUILTIN 35
+//#define  PIN_LED_BUILTIN 35
 #define  PIN_VEXT_EN     36
 
 #include "ESP32Board.h"
diff --git a/variants/heltec_v3/platformio.ini b/variants/heltec_v3/platformio.ini
index 49fa7434..4644f53a 100644
--- a/variants/heltec_v3/platformio.ini
+++ b/variants/heltec_v3/platformio.ini
@@ -8,9 +8,9 @@ build_flags =
   -D RADIO_CLASS=CustomSX1262
   -D WRAPPER_CLASS=CustomSX1262Wrapper
   -D LORA_TX_POWER=22
-  -D P_LORA_TX_LED=35
-  -D PIN_BOARD_SDA=17
-  -D PIN_BOARD_SCL=18
+  -D P_LORA_TX_LED=35         ; Heltec WT redefines this
+  -D PIN_BOARD_SDA=17         ; Heltec WT redefines this
+  -D PIN_BOARD_SCL=18         ; Heltec WT redefines this
   -D PIN_USER_BTN=0
   -D SX126X_DIO2_AS_RF_SWITCH=true
   -D SX126X_DIO3_TCXO_VOLTAGE=1.8
@@ -185,3 +185,40 @@ build_src_filter = ${Heltec_lora32_v3.build_src_filter}
 lib_deps =
   ${Heltec_lora32_v3.lib_deps}
   densaugeo/base64 @ ~1.4.0
+
+[env:Heltec_Wireless_Tracker_companion_radio_ble]
+extends = Heltec_lora32_v3
+build_flags =
+  ${Heltec_lora32_v3.build_flags}
+  -I src/helpers/ui
+ ; -D ARDUINO_USB_CDC_ON_BOOT=1      ; need for debugging
+  -D ST7735
+  -D PIN_ADC_CTRL=2                     ; redefines the V3 pin
+  -D DISPLAY_ROTATION=1
+  -D DISPLAY_CLASS=ST7735Display
+  -D USE_PIN_TFT=1
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  -D BLE_PIN_CODE=123456 ; HWT will use display for pin
+;  -D BLE_DEBUG_LOGGING=1
+  -D P_LORA_TX_LED=18
+  -D PIN_TFT_SDA=42   ; SDIN
+  -D PIN_TFT_SCL=41   ; SCLK
+  -D PIN_TFT_DC=40    ; RS (register select)
+  -D PIN_TFT_RST=39   ; RES 
+  -D PIN_TFT_CS=38
+  -D PIN_TFT_VDD_CTL=3       ; Vext is connected to VDD which is also connected to LEDA
+  -D PIN_TFT_LEDA_CTL=21     ; LEDK (switches on/off via mosfet to create the ground)
+;  -D ENABLE_PRIVATE_KEY_IMPORT=1
+;  -D ENABLE_PRIVATE_KEY_EXPORT=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v3.build_src_filter}
+  +<helpers/esp32/*.cpp>
+  +<../examples/companion_radio>
+  +<helpers/ui/ST7735Display.cpp>
+lib_deps =
+  ${Heltec_lora32_v3.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+  adafruit/Adafruit ST7735 and ST7789 Library @ ^1.11.0
+ 
\ No newline at end of file