Development steps of driving development

1. Analyze how hardware Works

2. View hardware connection schematic diagram

Basic initialization is done according to the schematic diagram: Configure the PIN function, and configure the relevant control register incrementally as required.

3. Try to write bare metal drive

Try to use the basic hardware functionality.

4. Check the kernel-related kernel driver framework

5. Achieve every specific level in the driving framework

Analyze the common level of implementation in the kernel, and the functions that need to be driven by the writer.

6. Porting drivers

Based on the above analysis of the information obtained to complete the simple driver modification and porting.

7. Write the driver

Development steps of driving development