RE: [Lcd4linux-devel] Hd44780 and I2C

[Luis.F.Correia <Lui...@se...>]

Hi Michael!

> 
> Hi Luis,
> 
> nice to hear from you again!
> 
> Sorry for the delay, but, as always, I'm too busy...

No problem, we all have our priorities...

> > From the driver side, it will be working in userspace, using the
> > /dev/i2c-(0|1) access.
> This looks interesting! How fast is the i2c bus? From what 
> I've heard, 
> it's quite slow...

Don't know yet, but even if it is slow, I'll refrain myself of using
bars...

> The current HD44780 driver is a bit of a mess, but that's because the 
> different wirings and modes and stuff are a mess. This won't 
> get better 
> with a new backend (which nobody had in mind when writing the 
> driver. So 
> nobody is to blame. Especially not me :-)
I'm not blaming anyone, but if a redesign comes to be, you'll have for sure 
a loot to take in account...

> There should be some more levels of abstraction inside, to 
> encapsulate 
> the parport driver a bit. This abstraction could be used for the i2c 
> backend.

Ok, I'll follow Martin's steps and report back any success.

> As soon as you got your i2c backend working, just check it 
> in, and let 
> me know about the interface. I'll have a look at this 
> internal cleanup.
> 
> 
> bye, Michael

Thanks!

Luis Correia   
Bering uClibc Team Member

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