system
March 15, 2013, 5:33pm
1
Hi dudes,
I recently got my hands on one of the UTFT supported LCD Displays,
the Display itself is working pretty well, but I have one mayor problem:
Can I haz more I/O plz? D:
The Display is eating up exactly every possible pin on my UNO but the display for itself
isnt quite usefull.
There is one option that I think how it would work:
Is it possible to acces the controlling pins (as I hope they are not as timing critical as the data pins)
via an shift register to free up some pins?
Greetings from Germany
Ijon_Tichi
MAS3
March 15, 2013, 5:46pm
2
number Johnny 5:
Need...
More...
Input..
What display it is ?
How is it connected ?
What are you trying to display ?
Pure text ?
Graphics ?
Or both ?
How many more pins do you need ?
I would say go for a larger Arduino, but you'd have to give some more info.
system
March 15, 2013, 5:58pm
3
oh, sorry, my fault.
It is an
3,2" "Model HY32D"
320x240 pixel
SSD1289 controller
with 16bit parallel interface
Its connected with
RST; CS; WR; RS to analog in 2 to 5
and
Data 0 to 15 at the Digital pins 0 to 13 and analog in 0 and 1
Actually I am displaying the demo of the UTFT library, which uses
text and graphics as I would like to use too later
greetings
Ijon_Tichi
Need...
More...
Input..
-_- Short Circuit is my favorite movie, and he says "Malfunction, need input."
Wow, I just sounded like a nerd.
Have you used up all your analog input pins? They can also be used as digital input or output pins.
Lefty
You can supply the Data pins via shift register - might require a libary change to use say SPI pins D10-11-13 to load the shift register (2 of them daisy chained) before the control lines are manipulated.
system
March 15, 2013, 6:46pm
7
Im a bit afraight of the timing, but I will take a look into the
library for using shift register, thankfully I have some shift registers lying
arround.
I'll keep you updated whats happened then
thanks for the infos.
greetings
Ijon_Tichi