Nanosatellite embedded workshop

Board's applications

Both applications are structured in the following way to allow you to follow the exercises:

• Application::init - initialise any peripheral that will be used for the Application
  • power_system::Application::init
  • onboard_computer::Application::init

• Application:run - spawns all tasks on the embassy executor needed for our Application.
  • power_system::Application::run
  • onboard_computer::Application::run
  • power_system::Application::init
• An embassy task fn run_*(..) for each exercise

Power System Application (power-system folder)

Battery and power sense

Onboard-computer (onboard-computer folder)

Peripherals

Exercises

Start with the power-system:

1. Flashing Onboard LED - a blinky example for IO - power_system::application::run_blinky
2. Battery measurement with ADC - measure and calculate the battery voltage and percentage - power_system::application::run_battery_measurement_adc
3. Send Battery percentage over UART to the onboard-computer - power_system::application::run_uart

Continue with the next exercises in the onboard-computer:

1. Receive battery percentage over UART from the power-system - onboard_computer::application::run_uart
2. GNSS receiver - parse NMEA 0183 sentences - onboard_computer::application::run_gnss

Future ideas you can develop

In no particular order:

• Power sense (power-system application)

  By soldering the jumper for GPIO 4 you can measure the voltage of the +5V Power in line. This allows you to know whether or not an external +5V has been provided (both from USB-C or other), that will charge the battery. Implement another status for the battery which is Charging/External power.

• IMU (onboard-computer application) Using the I2C peripheral and the included IMU sensor on the onboard-computer, take readings of the

• Humidity and Temperature sensor (onboard-computer application)