STM CircleOS forum / Beyond prototyping: which LCD screen?

gremlinc5 · 2011-04-09 15:11:24

Hi everyone,
I'm currently using EVO Primer as a prototyping platform and it looks great: CircleOS is simple enough to look what's "inside the box", the hardware is really flexible, etc. etc.

AFAICT a good prototyping workflow would be:
- create extension boards including additional hardware
- make the software work with the Primer (and the additional hardware)
- re-engineer everything to fit into a (hopefully) profitable product.

My only concern is about the LCD Screen. It seems to me it's the most complex and costly piece of hardware in the box.
A would like to change the screen panel, in future, but I would like to know in advance what should I do in order to do so. Do I have to rewrite a new LCD driver from the ground up? Are there any compatible, lower cost alternatives?
E.g. something that requires a minimal change in CircleOS to be supported.

Any comment (of any kind) would be REALLY appreciated.

Thank you in advance

Alberto

yrt · 2011-04-11 07:45:18

Hi Alberto,

The driver depends on the controller embedded in the LCD (IL9325 for EvoPrimer). Manufacturers often use the same one.
Hardware specific functions have been separated in the CircleOS project (lcd_spe.c, IL9325.c...), and port to a new platform is not a big work.
Generally the manufacturer provides software examples, specially for the power on and the settings.

Yves

gremlinc5 · 2011-04-11 08:19:29

yrt :
Hi Alberto,

The driver depends on the controller embedded in the LCD (IL9325 for EvoPrimer). Manufacturers often use the same one.
Hardware specific functions have been separated in the CircleOS project (lcd_spe.c, IL9325.c...), and port to a new platform is not a big work.
Generally the manufacturer provides software examples, specially for the power on and the settings.

Yves

Thank you Yves!
I was hoping for something like that.

I will try and see if I can get something working.

A partial list of producers/models of LCD's using the same IL9325 ("hopefully compatible" or "easier to integrate" with CircleOS) would be really nice...
I know it could be a lot of work, so it's more a nice-to-have.

Thank you again.

# 1 2011-04-09 15:11:24 Beyond prototyping: which LCD screen?

Beyond prototyping: which LCD screen?

# 2 2011-04-11 07:45:18 Beyond prototyping: which LCD screen?

Re: Beyond prototyping: which LCD screen?

# 3 2011-04-11 08:19:29 Beyond prototyping: which LCD screen?

Re: Beyond prototyping: which LCD screen?

yrt :

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