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The first successful driver

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The first successful driver-general Linux technology-Linux programming and kernel information. The following is a detailed description. Author: zhangzhiyin88

In the last two weeks, I have to modify the driver for work reasons. Although I have been trying to do this, I always feel that this work is quite challenging, however, the ground is in a theoretical state until the last two weeks.

Now I will introduce my successful experiences and problems encountered in the development process.

I. development background of the Linux system driver for reading a GPIO pin:

1. MCU chip: FIC8120 (arm9-based kernel );

2. Operating System: Linux (2.4 kernel version );

Ii. program source code:

1. driver source code:
QUOTE:

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