NAME¶

elbpcom - Communicate with Mesa ethernet cards

SYNOPSIS¶

Common options:

Reading data:

Writing data:

Read and decode memory space info area:

Sending arbitrary packets:

DESCRIPTION¶

Read or write data from a Mesa ethernet card that uses the LBP16 protocol, such as the 7I80. This can be useful for performing certain low-level tasks.

For more information about the meaning of each address space, see the card documentation. Incorrect use of this utility can have negative effects such as changing the board's IP address or even corrupting the FPGA bitfile in the eeprom. For some tasks, such as updating FPGA bitfiles and setting IP addresses, mesaflash(1) is a more appropriate tool.

If not specified, the default values are

If the --size argument TRANSFER_SIZE is 0, elbpcom will look up the preferred transfer size of the space in the space's info area.

This example demonstrates reading the HOSTMOT2 identifying string from the IDROM in space 0:

$ elbpcom --address 0x104 --read 8
> 82420401
< 484f53544d4f5432


      HOSTMOT2

$ ./mesaflash  --device 7i80 --rpo 0x104
54534F48
$ ./mesaflash  --device 7i80 --rpo 0x108
32544F4D

SEE ALSO¶

mesaflash(1), hostmot2(9), hm2_eth(9), Mesa's documentation for the Anything I/O boards.