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

variants/wio-e5-mini/platformio.ini

@@ -0,0 +1,49 @@
+[lora_e5_mini]
+extends = stm32_base
+board = lora_e5_mini
+board_upload.maximum_size = 229376 ; 32kb for FS
+build_flags = ${stm32_base.build_flags}
+  -D RADIO_CLASS=CustomSTM32WLx
+  -D WRAPPER_CLASS=CustomSTM32WLxWrapper
+  -D SPI_INTERFACES_COUNT=0
+  -D RX_BOOSTED_GAIN=true
+  -D P_LORA_TX_LED=LED_RED
+  -D PIN_USER_BTN=USER_BTN
+  -I variants/wio-e5-mini
+build_src_filter = ${stm32_base.build_src_filter}
+  +<../variants/wio-e5-mini>
+lib_deps = ${stm32_base.lib_deps}
+  finitespace/BME280 @ ^3.0.0
+
+[env:wio-e5-mini_repeater]
+extends = lora_e5_mini
+build_flags = ${lora_e5_mini.build_flags}
+  -D LORA_TX_POWER=22
+  -D ADVERT_NAME='"wio-e5-mini Repeater"'
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
+build_src_filter = ${lora_e5_mini.build_src_filter}
+  +<../examples/simple_repeater/*.cpp>
+
+[env:wio-e5-mini_sensor]
+extends = lora_e5_mini
+build_flags = ${lora_e5_mini.build_flags}
+  -D LORA_TX_POWER=22
+  -D ADVERT_NAME='"wio-e5-mini Sensor"'
+  -D ADMIN_PASSWORD='"password"'
+build_src_filter = ${lora_e5_mini.build_src_filter}
+  +<../examples/simple_sensor>
+
+[env:wio-e5-mini_companion_radio_usb]
+extends = lora_e5_mini
+build_flags = ${lora_e5_mini.build_flags}
+  -I examples/companion_radio/ui-orig
+  -D LORA_TX_POWER=22
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8  
+  -D DISPLAY_CLASS=NullDisplayDriver
+build_src_filter = ${lora_e5_mini.build_src_filter}
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-orig/*.cpp>
+lib_deps = ${lora_e5_mini.lib_deps}
+  densaugeo/base64 @ ~1.4.0