Aike, 1* Don't drop the list from Cc. 2* Don't top-post. That being said... On Fri, 15 Mar 2013 13:32:21 +0100, Aike Kristian Terjung wrote: > thank you for your reply. I tried what you suggested: > > echo max6650 0x90 > /sys/bus/i2c/devices/i2c-0/new_device > > what i get is: > > bash: echo: Schreibfehler: Das Argument ist ungültig. > > dmesg: > > 2c i2c-0: Invalid 7-bit I2C address 0x90 > > why is the address 7-bit width? It seems common to me that i2c-devices have 8 bit addresses? I could change the address to 0011 111 to make it 7 bit compatible, but this solution seems strange to me. No, I2C addresses can be either 7-bit or 10-bit, never 8-bit. One common mistake encouraged by some datasheets is to refer to "read address" and "write address" for a chip as 8-bit values. What really goes on the wire is a 7-bit address followed by a direction bit. So if you think your chip uses address 0x90 then odds are that it actually uses 0x90 >> 1 == 0x48. As a matter of fact, the first possible address listed by the MAX6650 datasheet is 0x48. And all possible addresses are shown as 7-bit values. -- Jean Delvare http://khali.linux-fr.org/wishlist.html _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
