BL475-SensorHub

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A zephyr based project on stm32BL475 to collect onboard sensor data and transmit it over mqtt to a dashboard.

  • wifi connectivity.
  • configured static ip adress.
  • configured mqtt ipv4 sockets.
  • configured a thread that collects sensor data and stores it into a queue.
  • configured a thread that reads sensor data form queue and sends it over mqtt.
  • main loop for maintaining the connection to mqtt broker.

    This projects uses a local mqtt broker mosquitto

supported sensors:

  • hts221: Temperture sensor
  • lsm6dsl: Acceleromter and Gyroscope sensor
  • lis3mdl: Magnetometer sensor
  • lps22hb: Pressure sensor
  • vl53l0x: TOF(Time of Flight) sensor

Usage

  • Buidling
west -p always -b disco_l475_iot1
  • Flashing
west flash --runner openocd

TODO

  • FIX the accelerometer and gyroscope sensor readings (reading 0 )
  • Use the json module in zephy to package the data
  • Make the modules (.h/.c) kconfig
  • Move the mqtt main connection loop to a sperate thread
  • Make the system use low power reads data every 5 min them go to sleep
  • Store wifi credentials in FLASH mem (QSPI)
  • Make the wifi Reconnect upon disconnection
  • Add support for dhcp and connect to mosquitto broker online
  • Add support for mqtt TLS