my_sensor_app

my_sensor_app: Apache Mynewt Sensor Network Application for STM32 Blue Pill with ESP8266 and nRF24L01 (includes Geolocation)

The program runs in 4 modes:

1️⃣ Standalone Node (Blue Pill with ESP8266): The program polls the Blue Pill internal temperature sensor every 10 seconds and transmits the sensor data (JSON format) to a CoAP (UDP) Server, such as thethings.io.

Edit the settings in targets/bluepill_my_sensor/syscfg.yml as follows:

syscfg.vals:
    # TUTORIAL1: 1
    TUTORIAL2: 1
    # TUTORIAL3: 1
    ...

2️⃣ Sensor Node (Blue Pill with nRF24L01): The program polls the Blue Pill internal temperature sensor every 10 seconds and transmits the sensor data (CBOR format) to the Collector Node.

Edit the settings in targets/bluepill_my_sensor/syscfg.yml as follows:

syscfg.vals:
    # TUTORIAL1: 1
    # TUTORIAL2: 1
    TUTORIAL3: 1
    ...

Set SENSOR_NODE_HW_ID_1 to the Hardware ID of the Blue Pill.

3️⃣ Collector Node (Blue Pill with nRF24L01 and ESP8266): The program receives sensor data (CBOR format) from the Sensor Node, and transmits the sensor data (JSON format) to a CoAP (UDP) Server, such as thethings.io.

Edit the settings in targets/bluepill_my_sensor/syscfg.yml as follows:

syscfg.vals:
    # TUTORIAL1: 1
    # TUTORIAL2: 1
    TUTORIAL3: 1
    ...

Set COLLECTOR_NODE_HW_ID to the Hardware ID of the Blue Pill.

4️⃣ WiFi Geolocation (Blue Pill with ESP8266): The program sends WiFi Access Point MAC Addresses and Signal Strength scanned by ESP8266 to a CoAP (UDP) Server, such as thethings.io. See https://github.com/lupyuen/thethingsio-wifi-geolocation

thethings.io will call the Google Geolocation API to compute the latitude and longitude based on the WiFi data. For public display, the computed geolocation is pushed to a web application hosted on Google Cloud App Engine. See https://github.com/lupyuen/gcloud-wifi-geolocation

Edit the settings in targets/bluepill_my_sensor/syscfg.yml as follows:

syscfg.vals:
    # TUTORIAL1: 1
    TUTORIAL2: 1
    # TUTORIAL3: 1
    WIFI_GEOLOCATION: 1
    ...

Patch for vsscanf.c

Note that we are using a patched version of apps/my_sensor_app/src/vsscanf.c that fixes ESP8266 response parsing bugs. The patched file must be present in that location.