Re: [Gumstix-users] compiling python extensions

[Andrei R. <po...@gm...>]

Dave,
isn't each i2c-io ioctl has slave address as a parameter ?
Why I2cSetSlaveAddress needed at all ?
-Andrei.

On 3/3/07, Dave Hylands <dhy...@gm...> wrote:
> HI Arnar,
>
> > If Dave sees this, I wanted to create a python binding for the
> > i2c-io-api.h functions - has that been done before?
> > I started with "I2C_IO_GetInfo" but I just got this:
> > ERROR: I2cTransfer: ioctl failed: Bad file descriptor (9)
> > ERROR: I2cReadBlock failed
>
> Did you do the open (of /dev/i2c-0) and call I2cSetSlaveAddress? You
> need to pass the file descriptor returned from open into
> I2cSetSlaveAddress. After calling SetSlaveAddress, then you can call
> I2C_IO_GetInfo.
>
> --
> Dave Hylands
> Vancouver, BC, Canada
> http://www.DaveHylands.com/