[prev in list] [next in list] [prev in thread] [next in thread] 

List:       ipaq
Subject:    [iPAQ] iPaq h3900 i2c bus always busy
From:       Roland Riegel <roland.riegel.maillist () gmx ! de>
Date:       2006-12-07 16:47:31
Message-ID: 200612071747.31255.roland.riegel.maillist () gmx ! de
[Download RAW message or body]


Hi to all,

For a university project, I am in the process of implementing sound support 
for the H3900 iPAQ. To communicate with the Philips UDA1380 sound chip, I 
have to get the I2C controller going. And this is where my problems begin.

After initialization of the I2C interface on the PXA250, the SDA and SCL lines 
of the I2C interface stay on a logically low level, such that the I2C bus 
seems busy.

From the Linux code I see that the iPaq contains several ASICs, controlling 
power, clocks, SD card, buttons, LCD backlight and so on. But I couldn't find 
any signs that this also applies to the I2C bus.

Could you please give me some hints on this? I have been searching for a 
solution on this for weeks now, without any progress. My code works on a 
PXA270 based development board, though.

Thanks in advance,
Roland
_______________________________________________
Open Source Software for Compaq iPAQ Handhelds.
iPAQ mailing list
iPAQ@handhelds.org
https://handhelds.org/mailman/listinfo/ipaq
irc://irc.openprojects.net #ipaq

[prev in list] [next in list] [prev in thread] [next in thread]