Teensy 3.2 with 12864 Full Graphic Smart Controller

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duncabar

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Has anyone been able to get a RepRap style Full Graphics Smart Controller working on a Teensy? I am currently using this with good success on an ATMega 2560 but i just need more power and more memory so I bought a Teensy. Love it... just need to figure out the pins. The issue i have is that the ATMega 2560 is using pins 34, 36, 40, 42, 50, 51, 52 and 53... and those don't exist on the Teensy. Am i just out of luck? Any thoughts? Oh.. using u8lib for graphics... maybe there is a diff pin combo on the lower digital pins someone can recommend?

Barry
 
Xenoamor said:
Can you elaborate on this RepRap style Full Graphics Smart Controller?

What's the actual hardware?
Click to expand...

Sure Xenoamor, it is a OSOYOO LCD 12864 Graphic Smart Display Controller. Here is a link on Amazon:
http://www.amazon.com/OSOYOO-Graphi...&redirect=true&ref_=oh_aui_detailpage_o06_s01

This is an Osoyoo design based on the open source spec here:
http://reprap.org/wiki/RepRapDiscount_Full_Graphic_Smart_Controller

If i can't get this to work.. i'm looking for a good replacement display (between 2.8 and 3.4 inch) for my project. I am probably leaning toward a TFT Touch panel (color good but not required) so that I won't have to deal with the rotary encoder. I DO need an SD card reader.. if it doesn't have one i can use a standalone version i am sure.

Very happy to get your thoughts!
 
It would help to know the chipset but something like this?

Hard to say, they dont specify what chipset is used on the display.
 
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This 2.8" TOUCH enabled screen can be had on Ebay and other places - but is also sold by PJRC: display_ili9341_touch

It is a FAST TFT color and well supported in software on the T_3.2 with resolution of 320x240. It has an SD card that can be edited to work - notes on connection on the PJRC linked site above.
 
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Donziboy2 said:
I think he has a screen already defragster, I believe he is looking for a library to drive it.
Click to expand...

Indeed he does - I was offering input on PLAN_B that meets the spec [ 2.8", Color TFT, Touch with No Encoder, SD Card ] - for a probably better/faster supported 'native' device with higher screen resolution::

duncabar said:
If i can't get this to work.. i'm looking for a good replacement display (between 2.8 and 3.4 inch) for my project. I am probably leaning toward a TFT Touch panel (color good but not required) so that I won't have to deal with the rotary encoder. I DO need an SD card reader.. if it doesn't have one i can use a standalone version i am sure.

Very happy to get your thoughts!
Click to expand...
 
Yes, i do have the screen linked above with that includes rotary encoder and SD that I've been using (and works quite well) with mega2560. So Plan A is to get that to work with Teensy 3.2... i haven't quite figured it out yet - i think it's going to be some trial and error on my part. I'm still learning on the hardware end. But, my plan B was to perhaps replace that with a TFT touch screen and SD. I did see the one on this site that Donziboy2 linked to.. but I appeared to only work (library or the display - not sure which) with Teensy 2.0 (unless i misunderstood). I didn't want to assume it would work with Teensy 3.2... but maybe it will? I could just buy it and give it a try i guess.
 
RE - Plan_B:: If you mean the one I linked in post #5 - that is specifically T_3 and LC capable - more so on the T_3. It has super fast SPI code optimized for great performance (T_LC can't do faster SPI) and anything that doesn't work will likely be fixed - and it has a super variety of FONTS in various sizes!

I've worked with the ILI9341 and found it nice and usable - I added touch interrupt to stop polling and support more timely touch response and also worked out a way to make a structure to define 'buttons' and respond to them - I made a thread about that I haven't followed up on in a while.
 
Oh my mistake! I thought that was the same display that i had found earlier... I will definitely buy this one... not sure how i missed it on the site. It is smaller than i wanted but maybe i can find a larger one somewhere. Thanks much! If this works out.. i'd be very interested in your mods for the touch interrupt. This display will be going on a loom and will be taking readings while at the same time being "touched" to make adjustments or select menu items so i think i'd like that too if you'd be willing to share. Thanks again for the help guys!
 
Indeed 2.8 is much nicer than .96, or 1.44 or 2.2 - but still small.

opps - it looks like I linked the non touch above:: display_ili9341_touch.html

My edit to avoid SPI polling was incorporated in the PJRC XPT2046_Touchscreen library. Just specify the interrupt pin ( the "purple test board" has it coming out on pin 2 ) on the begin and all the calls made for a touch point return with no other overhead when no Touch interrupt preceded it. My other code is out there on github: XPT2046_Touch_Examples - and has the forum thread link there.
 
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