MEN ME4, User Manual

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Getting Started
20ME04-00 E2

2020-02-25 Page 25
2.6 Using the ME4 under Linux
2.6.1 ME4 Linux BSP
MEN offers a Linux BSP supporting the ME4.
2.6.2 Accessing SMBus/I2C Devices using Standard Linux I2C Tools
For detailed information how to access SMBus/I2C devices using standard Linux I2C
tools:
2.6.3 Configuring Wireless Functions
You can configure the following by accessing a configuration register on the SMBus:

Enable/disable power for a wireless interface card

Control user LEDs related to wireless interfaces
The standard Linux I2C tools give access to SMB registers.
»
Find out the number of the SMBus where the configuration register is located on
ME4.
»
If you are unfamiliar with the standard Linux tools, please read the related applica-
tion note.
Usage Examples
Use the 7-bit SMB/I2C address to access a register.
The following examples assume that the SMBus number is 1.

More information and download:
www.men.de/products/me4/#downl

BSP documentation:
www.men.de/products/me4/#doc
See the MEN website for application note Using the Standard I2C Tools on
MEN CPUs under Linux .
More information on supported functions and hardware implementation

See Chapter 4.1 SMBus/I2C Devices on page 38 .
See Chapter 4.1.1 User LED and Wireless Card Enable Register on page 40 for the
register description.
See Chapter Accessing SMBus/I2C Devices using Standard Linux I2C Tools .