How to specify 10Mbps and 100Mbps

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originally posted by slacker@Jun 28 2006, 10:28 AM

take a look at the existing code (which sets the phy to auto negotiate) and modify it. i&#39;ve already mentioned which file it&#39;s in... <components>/altera_avalon_lan91c111/ucosii/src/altera_avalon_lan91c111.c

there&#39;s a section which starts with the comment

/* start the auto negotiation process */
/* try to negotiate, we have a go at this five times if it fails */

you need to modify the code, in this section, to set the phy to 10/full. it appears that all of the masks that you&#39;ll need to do this are already provided...in the <components>/altera_avalon_lan91c111/inc/altera_avalon_lan91c111.h header file.

best of luck!

- slacker

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Thanks slacker.

I changed the register mask (PHY CONTROL register) in the header file altera_avalon_lan91c111_regs.h and set it for 10Mbps FDX mode. But it didn&#39;t work and gave an error &#39;Failure in initialiazing lwip_devices-init&#39; while running the rogram.

Can you give a detailed answer how I can set the speed?

Sincerely,