Re: [Discuss-gnuradio] Devices containing 4937 tuner module

[Eric Blossom]

On Wed, Oct 08, 2003 at 02:51:12PM +1000, Alan Gray wrote:
> I can confirm that using bandpass sampling with the Microtune 4702 modules 
> (which have 8MHz of bandwidth at an IF of 36MHz) works perfectly. I've just 
> submitted the schematics and code required to use this tuner to 
> address@hidden   so that should be integrated into CVS soon
> 
> As a side note, is there any reason that the I2C communication functions 
> should return that the write operation has failed when in fact is has not? 
> (I know that the write has been successful, as the tuner is tuned to the 
> correct frequency, however I always get the message saying that it has 
> failed)

It would return failure if it thought the I2C low level write_byte
routine failed.  See i2c::write_byte.  You might want to put a scope
on the SCL and SDA lines and see if the peripheral is pulling it down
in the 9th bit slot.

Eric