3BHB004027R0101 GVC700AE01 3BHB003152P201 3BHB003152P104 5SXE05-0155 | ABB

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3BHB004027R0101 GVC700AE01 3BHB003152P201 3BHB003152P104 5SXE05-0155 | ABB

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GVC700AE01 was not originally implemented. In higher versions of the kernel, such as the 2.6.26 kernel, this function is implemented. So you must be careful. When the platform function is not useful, it is necessary to investigate the cause or directly operate the hardware registers to achieve the goal.
2.6 The Impact of Kernel Device Models on Drivers

There is a significant difference between writing device drivers in the 2.6 kernel and in the 2.4 kernel. 3BHB003152P104 incorporates a device model that is more complex and difficult to understand than the device driver itself. When you first learn drivers, you can ignore the device model, but you will find that the driver code in the kernel is basically integrated into the device model. So many times you have to face reality and still need to understand it, and its registration method will also change with kernel upgrades. The best way to solve such problems is to refer to the target kernel driver code.
Summary of 3BHB004027R0101:

When starting to learn device drivers, choose a currently popular kernel version and hardware platform. Don’t rush to catch up with the latest trends. In this way, you can find more network resources and not feel like fighting alone. I think this process should not be less than one year. After this process, try to port the drivers you have written to various target platforms. The above suggestions and response methods are a summary of my experience and are for reference only.

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