ok Thanks for pointing out my mistake. now it is giving a different error.
i did
unsigned long *funcs;
if(ioctl(fd, I2C_FUNCS, funcs)<0) {
perror("ioctl");
/* ERROR HANDLING: i2c transaction failed */
}
Now it says
ioctl: Bad address
i guess either the address is still incorrect or there is problem with I2C
interface of TVP5150.
thanks & regards
yuvraj
On Tue, Sep 22, 2009 at 11:41 AM, Deepika Makhija <
[email protected]> wrote:
> Hi,
>
> I2C driver accepts 7-bit address so,
>
> Instead of ioctl(fd, I2C_SLAVE, 0xB8) < 0)
> use
> ioctl(fd, I2C_SLAVE, (0xB8 >> 1)) < 0)
>
> Regards,
> Deepika
>
>
>
> Yuvraj Pasi wrote:
>
> Hi,
> I am trying to test tvp5150 with my board from userspace. i have written a
> small program using example given in I2C documentation.
> after opening file
> fd = open ("/dev/i2c/1", O_RDWR );
>
> when i do
> if (ioctl(fd, I2C_SLAVE, 0xB8) < 0)
>
> the system returns
> Failed to set slave address: Invalid argument
>
> the B8 is the I2C address given in the tvp5150 datasheet. is it correct or
> is there somthing i'm missing???
>
>
> thanks & regards
> yuvraj
>
>
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