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Embarcados (Chapter 2 (Driver Interface (Ioctl (Control and Handle the…

- - - - Componentes e suas conexões, descrevendo o protocolo usado
    - - Componentes e onde cada protocolo e funcionalidade foram implementados
  - - - Read data from the device
    - - Send data to the device
    - - Cleans up the driver
      - Another subsystem can use it
    - - Control and Handle the features not covered by the others
      - Stands for I/O
      - Is not discourage by kernel programmers due to tits lack of structure
    - - Opens the driver for use
  - - - is the interface to the user, both input and output
      - the user may not be a person
    - - is the glue that works between the model and the view
      - it handles how to get the input to the model for processing, and data from the model for display or outside communication
    - - is the domain-specific data and logic
      - It is the part that takes raw data from the input and creates something useful
- - - - utilizados para evitar flutuação em pinos configurados como entradas
      - Pull-up
        
        Garante que a entrada seja um valor alto
      - Pull-down
        
        Garante que a entrada seja 0
  - - - Power on self-test
      - This test verifies that all of the hardware components are there to run your system safely.
    - - Verify if each functionality or component is working well
      - take too long to execute
      - verify the software and hardware are working together as expected.
  - - - a diagnostic code that is used only in testing