BL475-SensorHub

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