Hi Kari, On Sat, 12 Sep 2009 19:39:25 +0300, Kari Laine wrote: > 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@xxxxxxxxxxxx> 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: -- -- -- -- -- -- -- -- Looks good. > >> 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. Have you read the driver's documentation? http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob_plain;f=Documentation/hwmon/pcf8591;hb=HEAD > 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 PCF8574A is supported by the pcf8574 driver (or pcf857x on recent kernels.) I am not aware of a driver for the TDA8444. -- Jean Delvare http://khali.linux-fr.org/wishlist.html -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
