UM1535 datasheet(12/39 Pages) STMICROELECTRONICS

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UM1535

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Doc ID 023036 Rev 2

# cat /proc/cpuinfo

Displays information about the SPEAr CPU

# cat /proc/meminfo

Displays information about memory usage

# cat /proc/modules

Displays information about kernel extension modules

# cat /proc/mtd

Displays information about Flash partitions

# cat /proc/partitions

Displays other information about Flash partitions

# cat /proc/stat

Displays OS status information

# cat /proc/bus/usb/devices

Displays information about USB Host ports

# cat /proc/net/dev

Reports Ethernet information.

# cat /proc/net/tcp

Reports TCP sockets information.

# cat /proc/net/udp

Reports UDP sockets information.

# cat /proc/net/arp

Reports ARP table.

# cat /proc/net/route

Reports IP routing table.

# cat /proc/kallsyms

Lists all kernel symbols

The standard /proc/bus/usb subtree is also made available. This is used to access USB

Host controllers and plugged devices from user-space applications.

For more details about the functionality provided by pseudo file systems, please refer to

standard Linux documentation.

2.4

Using a USB pen drive

USB pen drives can be accessed in a standard Linux way, connecting them to a USB host

port and mounting their file system under root file system. An example of operational

sequence for a standard pen drive connected as "sda" device (only one pen drive present) is

the following:

Plug the pen drive in a USB port. and wait for the Linux kernel to autodetect it (you can

see active kernel messages on the terminal)

Mount the pen drive file system:

# mount /dev/sda1 /mnt

Now the pen drive file system can be accessed under /mnt directory.

Transfer files as usual (for example, cp command).

When finished, unmount the pen drive:

# umount /mnt

Now you can physically unplug the pen drive.

2.5

Using a MMC/SD card

Some evaluation boards (currently EVALSP1340CPU / EVALSP320SCPU /

EVALSPEAR300 / EVALSPEAR600) provide a MMC/SD card reader slot.

An example of operation sequence for a MMC/SD card is the following:

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