linux driver development book

After two weeks of exploration, I finally had a preliminary understanding of the development of Linux device drivers. Next I will make a summary of the establishment of the development environment for Linux device drivers to facilitate future queries, it also helps beginners of the same path. When users are new to

After two weeks of exploration, I finally had a preliminary understanding of the development of Linux device drivers. Next I will make a summary of the establishment of the development environment for Linux device drivers to facilitate future queries, it also helps beginners of the same path. When users are new to

From:http://hi.baidu.com/hzxing1010/blog/item/efb6bf95c7ab756655fb96bb.html Just looking at O ' REILLY's "LINUX device Driver". The author has repeatedly emphasized the need to build a kernel tree when writing drivers. The so-called kernel tree, my understanding and online data said consistent is the kernel source of a logical form. Then how to build it. For this the internet "sex" up and the result is "fia

without having to go through the undo mapping, which provides the following call to the kernel:void dma_sync_single_for_cpu (struct device *dev, dma_handle_tbus_addr, size_t size, enum dma_data_directction direction );This function should be called before the processor accesses the streaming DMA buffer. Once the function is called, the processor "owns" the DMA buffer and can access it as needed. Then, before the device accesses the buffer, the following function should be called to return owner

This is the day we start the actual combat! Here by the way, ah, come out to do the basis of development is very important Ah, the foundation is not good, sooner or later is to be bad. Personal deep feeling like this embedded development of C language and microcomputer interface and principle is very dependent on, must have a deep foundation to hold the live, or really like some people say, learned a year e

};//version is double-byte, here is the high-byte, low -byteRET = gtp_i2c_read (client, buf,sizeof(BUF)); = U8 buf[8] = {Gtp_reg_version >>8, Gtp_reg_version 0xFF}; //The first 2 bytes have been stored in gtp_reg_version, starting from buf[2], where the data structure remains consistent for subsequent code BUF[8]RET =i2c_read0 (0x5c, Gtp_reg_version, buf[2],6) i2c_read0 (0x5c, gtp_reg_version)//U16 with Double byte.3, overwrite interrupt function processing,look at the

learn the interfaces that these three types of devices provide to us. (17) static compilation (re-download compiled Linux kernel) and dynamic compilation. The development phase is dominated by dynamic compilation (without restarting the kernel). Dynamically loaded in the same way as the module. (18) The main device number distinguishes device drivers. The secondary device number distinguishes between multi

a common interface for Linux applications to access video devices, and provides a unified V4L2 framework for device driver development in Linux. In Linux systems, V4L2-driven video devices (such as camera, image capture card) node paths are typically videox,v4l2 drives in/d

After debugging the pcduino led bare-board program, and then debugging the pcduino gpio driver development based on the Linux kernel, the previous problems can be solved. This article is based on the four simple driver development for Li