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@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: -- -- -- -- -- -- -- -- > >> 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 -- 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
