Help with TFT Breakout and Mega 2560

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ManOnCloud9
 
Posts: 4
Joined: Mon Sep 26, 2011 4:48 pm

Help with TFT Breakout and Mega 2560

Post by ManOnCloud9 »

I've read all the relevant posts and double checked the wiring of the 2.8" TFT Touchscreen Breakout to a Mega 2560 and can't seem to get it to work. Currently the back lit screen works but the serial interface reports "Unknown driver chip 9228". The tutorial document claims this indicates D0 is wired incorrectly. I've checked the wiring several times using this scheme:

TFT PIN => FNC => Mega 2560 PIN
1 => GND => GND
2 => 5v => 5v
3 => CS => A3
4 => C/D => A2
5 => RW => A1
6 => RD => A0
7 => RST => A4
8 => BKLT=> 5v
9 => X+ => Not connected at this time
10 => Y+ => Not connected at this time
11 => X- => Not connected at this time
12 => Y- => Not connected at this time
13 => D0 => D22
14 => D1 => D23
15 => D2 => D24
16 => D3 => D25
17 => D4 => D26
18 => D5 => D27
19 => D6 => D28
20 => D7 => D29

Is there anything I may be overlooking? Any help would be appreciated.

PS: The TFT Touchscreen "Shield" works fine with the same Mega 2560 with the TFTLCD.h
//#define USE_ADAFRUIT_SHIELD_PINOUT line commented out. It remains commented in
working with the "Breakout".

Thanks so much for any assistance.

adafruit
 
Posts: 12151
Joined: Thu Apr 06, 2006 4:21 pm

Re: Help with TFT Breakout and Mega 2560

Post by adafruit »

can you try it with a non-Mega just in case? we do test each one so its odd it wouldn't work.

ManOnCloud9
 
Posts: 4
Joined: Mon Sep 26, 2011 4:48 pm

Re: Help with TFT Breakout and Mega 2560

Post by ManOnCloud9 »

The Mega 2560 is all that I have at this time...

adafruit
 
Posts: 12151
Joined: Thu Apr 06, 2006 4:21 pm

Re: Help with TFT Breakout and Mega 2560

Post by adafruit »

no friends with an UNO? :)

ManOnCloud9
 
Posts: 4
Joined: Mon Sep 26, 2011 4:48 pm

Re: Help with TFT Breakout and Mega 2560

Post by ManOnCloud9 »

I wish I did... Would it be possible for me to send it in for testing? I'm not in a big hurry to get it up and running. I've tried both connection types on the unit with the same result. Otherwise I guess I could invest in an Uno.

adafruit
 
Posts: 12151
Joined: Thu Apr 06, 2006 4:21 pm

Re: Help with TFT Breakout and Mega 2560

Post by adafruit »

worth asking :)
email support@adafruit for a replacement and ask for a return postage. package the old one carefully!

ManOnCloud9
 
Posts: 4
Joined: Mon Sep 26, 2011 4:48 pm

Re: Help with TFT Breakout and Mega 2560

Post by ManOnCloud9 »

Thanks, I'll give it a shot...

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