Hi Nils, > Linux-2.6.XXXX/Documentation/i2c is what i read. > the problem is that #include <linux/i2c-dev.h> causes > compiler errors because of the missing I2C_SMBUS_... macros in 2.6.x > (if you want i include the error output, my example program or > the linux/i2c-dev.h file i am using) > although all this is fixable, i am surprised that i couldn't find > any howto/tutorial/advice on that - or am i the only one having this > problem ? There are two i2c-dev.h files, one for kernel-space and one for user-space. If you are writing a user-space tool which will access /dev/i2c-*, you need the user-space version of i2c-dev.h, which is distributed with lm_sensors for historical reasons, although I believe the kernel-headers package has a copy as well. This version will work regardless of the version of the kernel you are using. Hope that helps, -- Jean Delvare
