Velleman K8000

[Kari Laine <klaine8-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Hi Jean

thank you very much for good information.

Hopefully you can answer these questions as well because I am totally lost.

On Sat, Sep 12, 2009 at 12:12 PM, Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org> wrote:
> You didn't tell which kernel you are using, but kernel 2.6.17 and later
> wouldn't let you load i2c-parport without a type parameter.
The kernel is 2.6.27

> It doesn't matter. i2c-core gets loaded automatically when any other
> module needs it.
it indeed is.

> You should install i2c-tools and use the command "i2cdetect -l". This
> will tell you what each i2c bus on your system is.
>
> Then you can try "i2cdetect <n>" where <n> is a bus number, to scan the
> bus in question. This is a good way to test whether the driver and
> device are working properly.
it gives this. So it seems to find all four chips on Velleman K8000 .

    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: 20 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- 38 39 -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

>
>> If these devices probably refer to Velleman - then how I can refer
>> different i2c-devices on the board.
>
> Depends on the device. In the case of the Philips PCF8591, which
> apparently you are using, sysfs attributes will be created somewhere
> under /sys/bus/i2c/drivers/pcf8591. Each device has a name of the form
> <bus number>-<device address>, for example "1-0048" for a PCF8591.
When I now do

modprobe pcf8591

In

linux-1fyv:/sys/bus/i2c/devices  directory

comes 1-0048

Now I have to figure out how to use this device. Any comments.

The Velleman K8000 card has three other chips which show up in
I2C-bus. Two PCF8574A which are I/O-chips and TDA8444-chip which is
DA-chip. I don't find any modules for them. Does it mean that they are
not supported as of yet or anymore?


>
> The sysfs attributes in question are described in
> Documentation/hwmon/pcf8591 (or Documentation/i2c/chips/pcf8591 on
> kernels older than 2.6.30.)
>


> Hope this helps,
It helped much!

All the best to you

Kari