display problem

[Nasim_Khaliqhey]

Hi Dears
I am using four flowcodes ,flowcode :6,7,8,9, in last few year in my spare times .
I have not been able to get the programmed data to be display in deference displays
lcd 16x2 ,x4 & so on they are all with DH44780 drive chip,
the last project I using Device 16F877A ,with 20MHz crystal, 33 PF (2 ceramic capacitor)
lcd 16x2.
In test of 1 sec programming I get good result waveform in my oscilloscope & constant
led ON.
As I use logic gates ICs regarding to Boolean Algebra calculation they work .
I hope my mentioned flowcodes software are usable for my projects.
looking forward
hearing from an expert adviser.
wr
Nasim

Flowcode9 lcd pin connection try.fcfx

(11.76 KiB) Downloaded 331 times

[BenR]

Hi Nasim,

Looks like you're close, the only thing your program seems to be missing is a call to the lcd_start function which needs to happen before you call any of the other LCD macros.

Start.jpg (32.67 KiB) Viewed 2680 times

The only other thing you may have to do is set the contrast of the LCD using a potentiometer as shown here.

https://www.flowcode.co.uk/wiki/index.p ... onnections

[jgu1]

Hi

Seemed like you forgot the Start/initial in the beginning.


Br Jorgen

Edit:
Well, Benn and I reply same time