Mapping pins to LCD.C

M0KHZ · Joined: 14 Feb 2008 Posts: 18 Location: Cumbria

Hi Real newby question ....

The hardware for my LCD has been wired as follows:

Pin_C0 = Enable
Pin_C1 = R/W
Pin_C2 = RS
Pin_D0 = D7
Pin_D1 = D6
Pin_D2 = D5
Pin_D3 = D4

The question is how do I map these pins in the LCD.C file? As you can see I really am on the start of my learning curve here!

Regards

Kevin – M0KHZ

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Use this driver instead. The pins are assigned with #define statements
at the top of the driver file. It's easy.
http://www.ccsinfo.com/forum/viewtopic.php?t=24661

M0KHZ · Joined: 14 Feb 2008 Posts: 18 Location: Cumbria

Hi Thanks for the quick reply, I've tried this and still no display, mind you I an using virgin hardware ! Homebrew at that, I'm running out of time tonight, so will have to wait till tomorrow evening before I can continue Smile

Thanks again, I'll keep you posted.

Regards
Kevin - M0KHZ

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

M0KHZ · Joined: 14 Feb 2008 Posts: 18 Location: Cumbria

Hi Guys

OK, after a few hours going round in circles and failing miserably to get my Osc firing, and after trying 3 different crystals and a whole range of loading capacitors, and changing the PIC (not easy as it was a TQFP pacage!) I’ve (temporarily) given up and have opted to use an external 10Mhz osc I have here in the shack!

The good news is my LCD display is fully functional using the ‘flex_LCD420.c” code.
My hardware pins mapped without any issues, and it just works. Thanks for getting me started on this new venture.

Kevin – M0KHZ

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

M0KHZ · Joined: 14 Feb 2008 Posts: 18 Location: Cumbria

Hi It was no problem, the link you posted had a link to the 4x20 anyway, the code works a treat, thanks again.

The next stage to to structure the code!

I'm thinking state machine, and have an idea to what it should look like, so onwards and upwards!

Regards

Kevin - M0KHZ