11.4. Writing Software Drivers Using CMSIS

Try these first

1. 1.

   What is the purpose of a software driver?

   Hint

   Think about how software communicates with hardware.

2. 2.

   What does GPIO stand for?

   Hint

   Recall the functionality of a GPIO pin.

3. 3.

   What does CMSIS stand for?

   • Computer Microcontroller Software Integration Standard
   • Cortex Microcontroller Software Interface Standard
   • Communication Microcontroller Software Interface Standard

   Hint

   Consider what CMSIS is used for in microcontroller development.

4. 4.

   True or False: The purpose of a GPIO driver is to manage serial communication.

   • True
   • False

   Hint

   Recall which type of driver facilitates serial communication.

5. 5.

   Create a complete GPIO driver for an LED that includes initialization, turn on, turn off, and toggle functions. Explain your design choices.

   Hint

   Remember the structure we discussed in our GPIO sessions.

6. 6.

   Develop a UART driver that receives a string and echoes it back to the sender. Outline the logic flow and coding considerations.

   Hint

   Consider how to read inputs while handling transmission without collisions.