RTOS Task break down

[dpslwk]

I think we can break down the badge firmware into the following RTOS Tasks, I've tried to give a quick summary of what I think each task might cover

• TiLDA
  • Main application logic and director thread, takes input from everywhere and triggers everything else (might not be needed)
• GUI/Display
  • Responsible for managing the frame buffer, drawing the widgets, flipping it based on IMU and calling EPD to ask for a full or partial update
• IMU
  • Setup IMU on power up, manage IMU interrupts and updating global available orientation data. Configure IMU in and out of sleep states
• Radio
  • Handle all radio traffic and protocol exchanges, update state as required, (may trigger screen update)
• Buttons
  • React to user interaction, from joystick, A&B, left & right context, light buttons. (may trigger screen update, start IR, change RGB State, )
• RGB
  • manage PWM out put to RGB LED's including torch mode
• PMIC
  • Look after PMIC lines states, charging, monitor battery level and OTG voltage generation (if not don't by USB host drivers)
• Flash
  • deal with reading and writing to flash chip, work with config area, file system
• USB
  • handle USB serial and MSD tasks
• IR
  • send and receive IR data
• Sound
  • Sound play back from buffer or sound track
• Sleep
  • This is likely to be done via the IDLE hook, managed going into and out of the various levels of sleep states Sleep mode, Wait mode, Backup mode. Including saving config and state information, hibernation file before entering backup mode

Possible FreeRTOS compatible HAL drivers needed to support our firmware some of these we might be ok just to use the Arduino API versions

• Gpio
• ADC
• SPI
• I2C
• Serial
• PWM
• USB Device Stack
  • CDC Serial
  • MSD

[dpslwk]

Will need to work out priority levels for tasks, which can pre-empt which. Also IRQ priority levels