Initial commit: Simple Sensor firmware for Heltec T114 with BME280

- MeshCore-based Simple Sensor firmware
- Heltec T114 without display
- BME280 sensor support (temp/humidity/pressure)
- Radio: 868.856018 MHz, SF7, BW62.5 kHz, CR4/7
- 2-byte path hash
- PlatformIO project

build_as_lib.py

@@ -0,0 +1,64 @@
+from os.path import realpath
+
+Import("env") # type: ignore
+menv=env # type: ignore
+
+src_filter = [
+  '+<*.cpp>',
+  '+<helpers/*.cpp>',
+  '+<helpers/sensors>',
+  '+<helpers/radiolib/*.cpp>',
+  '+<helpers/ui/MomentaryButton.cpp>',
+  '+<helpers/ui/buzzer.cpp>',
+]
+
+# add build and include dirs according to CPPDEFINES
+for item in menv.get("CPPDEFINES", []):
+ 
+    # PLATFORM HANDLING
+    if item == "STM32_PLATFORM":
+        src_filter.append("+<helpers/stm32/*>")
+    elif item == "ESP32":
+        src_filter.append("+<helpers/esp32/*>")
+    elif item == "NRF52_PLATFORM":
+        src_filter.append("+<helpers/nrf52/*>")
+    elif item == "RP2040_PLATFORM":
+        src_filter.append("+<helpers/rp2040/*>")
+    
+    # DISPLAY HANDLING
+    elif isinstance(item, tuple) and item[0] == "DISPLAY_CLASS":
+        display_class = item[1]
+        src_filter.append(f"+<helpers/ui/{display_class}.cpp>")
+        if (display_class == "ST7789Display") :
+            src_filter.append(f"+<helpers/ui/OLEDDisplay.cpp>")
+            src_filter.append(f"+<helpers/ui/OLEDDisplayFonts.cpp>")
+
+    # VARIANTS HANDLING
+    elif isinstance(item, tuple) and item[0] == "MC_VARIANT":
+        variant_name = item[1]
+        src_filter.append(f"+<../variants/{variant_name}>")
+    
+    # INCLUDE EXAMPLE CODE IN BUILD (to provide your own support files without touching the tree)
+    elif isinstance(item, tuple) and item[0] == "BUILD_EXAMPLE":
+        example_name = item[1]
+        src_filter.append(f"+<../examples/{example_name}/*.cpp>")
+
+    # EXCLUDE A SOURCE FILE FROM AN EXAMPLE (must be placed after example name or boom)
+    elif isinstance(item, tuple) and item[0] == "EXCLUDE_FROM_EXAMPLE":
+        exclude_name = item[1]
+        if example_name is None:
+            print("***** PLEASE DEFINE EXAMPLE FIRST *****")
+            break
+        src_filter.append(f"-<../examples/{example_name}/{exclude_name}>")
+
+    # DEAL WITH UI VARIANT FOR AN EXAMPLE
+    elif isinstance(item, tuple) and item[0] == "MC_UI_FLAVOR":
+        ui_flavor = item[1]
+        if example_name is None:
+            print("***** PLEASE DEFINE EXAMPLE FIRST *****")
+            break
+        src_filter.append(f"+<../examples/{example_name}/{ui_flavor}/*.cpp>")
+        
+menv.Replace(SRC_FILTER=src_filter)
+
+#print (menv.Dump())