[ECOS] Lcd support

["Ramiro C. Carvalho" <ramiro dot carvalho at uol dot com dot br>]

Hi everybody.

I was thinking about the best way to have support for the lcd in my target 
and then i took a look at some implementations in the repository.

To my surprise, the implementations do not handle the lcd as a device, i 
mean, there is nothing like \ecos\packages\devs\lcd on the repository.

What i could see are modules that export lcd specific routines and, 
sometimes, even including implementations of printf in the form of 
"lcd_printf". This is the case of AAED2000 target.

My intention was to create a device, something like \dev\lcd0 and have the 
CHAR_DEVIO_TABLE and CHAR_DEVTAB_ENTRY structures for it filled with 
pointers to my lcd support routines. By doing so, i could set up the default 
console to this device and so everything the can print on stdout could 
automatically use the lcd (and so i would be taking credit of the ecos 
printf implementation).

Does it make sense in terms of ECOS architecture? Why it was not done like 
this for some targets?

Best regards.

Ramiro C. Carvalho
ramiro.carvalho@uol.com.br


--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss