Add LoRa sensor network support

- Design LoRa packet protocol with CRC16 validation - Add protocol header files (lora_protocol.h, lora_packet.h) - Create battery-powered remote node firmware template - Support for DHT22, BME680, DS18B20 sensors - Deep sleep for battery conservation - Automatic gateway registration - Add LoRa receive to gateway firmware - RadioLib SX1262 integration - Node registry for tracking up to 16 nodes - HTTP forwarding of received readings - ACK responses to remote nodes - Create comprehensive setup guide with wiring diagrams Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-24 17:50:53 -06:00
parent 265a53768e
commit 5554341b49
11 changed files with 3199 additions and 34 deletions
@@ -0,0 +1,120 @@
+; ZNET LoRa Remote Sensor Node
+; Battery-powered sensor nodes for temperature/humidity/VOC monitoring
+;
+; Supported boards:
+;   - Heltec WiFi LoRa 32 V3
+;   - TTGO LoRa32 (SX1276)
+;   - DIY ESP32 + SX1262/SX1276 modules
+
+[platformio]
+default_envs = heltec_v3
+
+[env]
+platform = espressif32
+framework = arduino
+monitor_speed = 115200
+upload_speed = 921600
+
+; Common libraries for all variants
+lib_deps =
+    sandeepmistry/LoRa@^0.8.0
+    adafruit/Adafruit Unified Sensor@^1.1.14
+    adafruit/DHT sensor library@^1.4.6
+    adafruit/Adafruit BME680 Library@^2.0.4
+    paulstoffregen/OneWire@^2.3.8
+    milesburton/DallasTemperature@^3.11.0
+
+build_flags =
+    -DCORE_DEBUG_LEVEL=1
+    -DARDUINO_USB_CDC_ON_BOOT=1
+
+; Common settings for battery optimization
+board_build.partitions = min_spiffs.csv
+
+; ============================================================================
+; Heltec WiFi LoRa 32 V3 (Recommended - built-in OLED + SX1262)
+; ============================================================================
+[env:heltec_v3]
+board = heltec_wifi_lora_32_V3
+build_flags =
+    ${env.build_flags}
+    -DLORA_BOARD_HELTEC_V3
+    -DLORA_FREQUENCY=915.0
+    ; SX1262 pins for Heltec V3
+    -DLORA_SCK=9
+    -DLORA_MISO=11
+    -DLORA_MOSI=10
+    -DLORA_SS=8
+    -DLORA_RST=12
+    -DLORA_DIO1=14
+    -DLORA_BUSY=13
+    ; OLED pins
+    -DOLED_SDA=17
+    -DOLED_SCL=18
+    -DOLED_RST=21
+    ; Battery ADC
+    -DBATTERY_ADC_PIN=1
+    -DBATTERY_ADC_EN_PIN=37
+
+lib_deps =
+    ${env.lib_deps}
+    thingpulse/ESP8266 and ESP32 OLED driver for SSD1306 displays@^4.4.0
+    jgromes/RadioLib@^6.4.0
+
+; ============================================================================
+; TTGO LoRa32 V2.1 (SX1276)
+; ============================================================================
+[env:ttgo_lora32_v21]
+board = ttgo-lora32-v21
+build_flags =
+    ${env.build_flags}
+    -DLORA_BOARD_TTGO_V21
+    -DLORA_FREQUENCY=915.0
+    ; SX1276 pins for TTGO
+    -DLORA_SCK=5
+    -DLORA_MISO=19
+    -DLORA_MOSI=27
+    -DLORA_SS=18
+    -DLORA_RST=23
+    -DLORA_DIO0=26
+    ; OLED pins
+    -DOLED_SDA=21
+    -DOLED_SCL=22
+    -DOLED_RST=16
+    ; Battery ADC
+    -DBATTERY_ADC_PIN=35
+
+lib_deps =
+    ${env.lib_deps}
+    thingpulse/ESP8266 and ESP32 OLED driver for SSD1306 displays@^4.4.0
+
+; ============================================================================
+; Generic ESP32 + SX1276 (DIY builds)
+; ============================================================================
+[env:esp32_sx1276]
+board = esp32dev
+build_flags =
+    ${env.build_flags}
+    -DLORA_BOARD_GENERIC
+    -DLORA_FREQUENCY=915.0
+    ; Define your own pins in config.h
+
+; ============================================================================
+; DHT22 sensor variant (ambient temp/humidity)
+; ============================================================================
+[env:heltec_v3_dht22]
+extends = env:heltec_v3
+build_flags =
+    ${env:heltec_v3.build_flags}
+    -DSENSOR_TYPE_DHT22
+    -DDHT_PIN=7
+
+; ============================================================================
+; BME680 sensor variant (temp/humidity/pressure/VOC)
+; ============================================================================
+[env:heltec_v3_bme680]
+extends = env:heltec_v3
+build_flags =
+    ${env:heltec_v3.build_flags}
+    -DSENSOR_TYPE_BME680
+    -DBME680_I2C_ADDR=0x76