lcd4linux-devel

[Lcd4linux-devel] new driver "usb to lcd" - libusb

[<st...@mo...>]

I'm just working on a little USB-LCD.

Because of "If it's a /real/ USB display, you want to use libusb, which 
makes things a bit more complex. Please drop us an email 
<mailto:lcd...@li...> in this case..." I wrote 
to you...

I'll start writing a new driver in the next days. Hardware is already 
working.

Is there something special what i need to look after? Please tell me. 
I'm using libusb.
The drv_USBHUB.c looks nice to be modified for my device. Thats the file 
i'll start working on.

About my LCD:
It's a HD44780 (2x16) behind a microcontroller. It's like the USB2LCD, 
but with a cheaper IC, and only 20pins :-) From it's 2kb memory there 
are already 2040 bytes in use, so it will be complicated to support 
larger lcd's with 2 controllers. But we'll see... ;-)

Stefan Mönch

Re: [Lcd4linux-devel] new driver "usb to lcd" - libusb

[Ernst B. <e.b...@xe...>]

On Monday 30 October 2006 00:41, Stefan M=F6nch wrote:
> I'm just working on a little USB-LCD.

> Is there something special what i need to look after? Please tell me.
> I'm using libusb.
> The drv_USBHUB.c looks nice to be modified for my device. Thats the file
> i'll start working on.

Thats a resonable starting point, I wrote that driver by starting with the=
=20
USB2LCD driver and ripping out unused stuff IIRC ;)

> About my LCD:
> It's a HD44780 (2x16) behind a microcontroller. It's like the USB2LCD,
> but with a cheaper IC, and only 20pins :-) From it's 2kb memory there
> are already 2040 bytes in use, so it will be complicated to support
> larger lcd's with 2 controllers. But we'll see... ;-)

Lemme guess, 20 Pins... ATTiny2313?

Maybe have a look at http://www.xs4all.nl/~dicks/avr/usbtiny/, scroll way=20
down.

Thats an LIRC-Compatible IR-Receiver and LCD controller for USB running on =
a=20
tiny2313, with GPL'ed Firmware.


> Stefan M=F6nch

Good luck with your project,
/Ernst

Re: [Lcd4linux-devel] new driver "usb to lcd" - libusb

[Till H. (Lists) <li...@ha...>]

Hi,

On Monday 30 October 2006 00:41, Stefan M=F6nch wrote:
> It's a HD44780 (2x16) behind a microcontroller. It's like the USB2LCD,
> but with a cheaper IC, and only 20pins :-) From it's 2kb memory there
Cheaper than EUR 1.65 ??? Cool, what's that?

Till

=2D-=20
Dr.Ing. Till Harbaum <ti...@ha...>
http://www.harbaum.org/till

Re: [Lcd4linux-devel] new driver "usb to lcd" - libusb

[Michael R. <re...@eu...>]

Hi Stefan,

> Is there something special what i need to look after? Please tell me. 
> I'm using libusb.
> The drv_USBHUB.c looks nice to be modified for my device. Thats the file 
> i'll start working on.

Well, USBHUB may be the simplest driver available, but there's a little
drawback: It doesn't support a (real) display :-)

I'd recommend drv_USB2LCD (or was ist drv_LCD2USB?)

> About my LCD:
> It's a HD44780 (2x16) behind a microcontroller. It's like the USB2LCD, 
> but with a cheaper IC, and only 20pins :-) From it's 2kb memory there 
> are already 2040 bytes in use, so it will be complicated to support 
> larger lcd's with 2 controllers. But we'll see... ;-)

any infos about your hardware?  (being a very curious hunter-gatherer :-)

bye, Michael

-- 
Michael Reinelt <re...@eu...>
http://home.pages.at/reinelt
GPG-Key 0xDF13BA50
ICQ #288386781