Thanks Dave. I2C-IO is now running.
----- Original Message -----
From: "Dave Hylands" <dhylands@...>
To: "General mailing list for gumstix users."
Sent: Wednesday, June 07, 2006 11:19 AM
Subject: Re: [Gumstix-users] I2C Load?
> I want to get 'i2c-io' working between Gumstix and Robostix but can't seem
> to get 'i2c-load' working first in order to download the 'i2c-io' hex
> I followed the instructions, set the fuses and loaded the precompiled
> 'i2c-bootloader' on the robostix using AVR Studio. In standalone mode the
> Robostix comes up with red LED flashing twice a second as expected.
> I unzipped and loaded the precompiled i2c-modules-2.6.11.tar.gz and
> through to get the expected output when running the modprobes.
> The next step is a little mysterious. I've looked through the mail archive
> and can't confirm that the symptom below is what I should expect.
> If I connect Gumstix, Robostix and modified Tweener, (cut daughter card
> trace on RxD…
> or just Gumstix and Robostix then upon power up, the light flashes once
> then goes out. When I try '# ./i2c-load --reset 0x0b info' then no
> device is found.
What's happening is that u-boot is setting up the GPIO lines in such a
way that the robostix is being held in reset. There are a few ways to
get the robostix running (only one of the following is required):
1 - Modify some u-boot stuff:
2 - Put the S10robotstix file in your /etc/init.d directory on the gumstix
3 - insmod the robostix_drv.ko file and use the command:
robostix reset pulse
P.S. When using the ISP connector on the robostix,, make sure that the
gumstix is NOT plugged in.
Vancouver, BC, Canada
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