Fixing issue with read8 not reading in the proper low value

[adam-singer]

I dont think the read8() functions properly on the touch shield. This solution fixes readID() to identify the display correctly.

[PaintYourDragon]

I've been doing some heavy datasheet reading and making some adjustments to the code that might fix both the ID issue and the pixel-reading issues (still possibly a bum shield though, esp. with the SD card thing going, so let's keep that ball rolling regardless). If you'd be willing to give it a trial run, that code is currently located here:

https://github.com/PaintYourDragon/TFTLCD-Library-testing

[adam-singer]

I'll take this for a spin tomorrow

[adam-singer]

readID() seems to be working now. readPixel still does not work.

The following arduino code

void loop(void) {
  Serial.println(RED, HEX);
  tft.fillScreen(RED);
  delay(2000);
  Serial.println(tft.readPixel(10, 10), HEX);
  Serial.println("---");
}

prints out

TFT LCD test
Using Adafruit 2.8" TFT Arduino Shield Pinout
Found ILI9328 LCD driver
Done!
F800
1F
---
F800
1F
---
F800
1F
---

[adam-singer]

Check out what this person is doing to read the value, looks like a hack :+1: https://code.google.com/p/lpc1343codebase/source/browse/trunk/drivers/lcd/tft/hw/ILI9328.c?r=178#493

[adam-singer]

nm that comment, I noticed your doing that also

[PaintYourDragon]

Frustrating. I don't have exactly the same hardware here, but it's working with two different displays: one shield (7575 driver), one breakout (9325 driver). Could try adding a few extra RJMPs to DELAY7 in pin_magic.h, but that really strikes me as just shotgun debugging...the code is already following the datasheet spec. Still think it's worth swapping the shield. I might also need to pick up one of the current 9328 shields for testing this. Blargh.

[adam-singer]

Tried adding the extra RJMPs, same results as before. Must say I do enjoy this comment the last line is a radioactive mutant emoticon.

[PaintYourDragon]

Bugger. Did you make that request for a replacement? Because I'm stumped at the moment and can't think of any other games to try in the code.

[adam-singer]

Yep, Thanks! Looks like the request has been shipped.

[tdicola]

Cleaning up issues in this library and it looks like this one isn't active anymore--closing the issue for now.