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1. 

   mikep
   Member

   @sei

   It would be great if you get the ITead display to work, I have one of them laying around there too somewhere :). Would be nice to put it to use.
   Let us know how it goes.

   Mike

   Posted 3 years ago #
2. 

   sei
   Member

   @gbulmer

   It's been a while since the last time I coded in C, also I think i never really used defines, so thanks for your remark! I definitly learned something :)

   @mikep

   I'll put up a new thread in the next minutes ;)

   Posted 3 years ago #
3. 

   gbulmer
   Moderator

   sei - thank you for taking the comments as constructive. I'm glad they were helpful.

   Posted 3 years ago #
4. 

   mbolivar
   LeafLabs

   sei:

   @mbolivar
   I've just made an entry to the supported Shields page.

   thanks!

   Posted 3 years ago #
5. 

   manitou
   Member

   I have added touchscreen support to sei's library. I didn't modify sei's lib, but the github files below are organized to be added to your maple sketchbook libraries/ folder. Touchscreen support is modification of Arduino version, mainly changing from 10-bit to 12-bit ADC. Besides the graphicstest example, I added rotationtest, tftpaint, touchscreendemo. I used sei's pin assignments, and like the Arduino, the touchscreen shares pins with the display. library files are here

   https://github.com/manitou48/maple-touchscreen-libs

   sei's implementation is faster (graphicstest) than Arduino.

   test            Arduino    Maple   (time in ms)
   testttext           843      323
   testlines         15090     8994
   testfastlines       979      340

   Posted 3 years ago #
6. 

   sei
   Member

   Hi manitou,

   That's great ! Thank you very much :)
   Would you mind if i put a link to your github in the wiki instead of the link to the gist ?
   Sadly I could not try your stuff yet, but i'm definitly looking forward to it !

   @mbolivar & gbulmer: you are welcome :)

   Posted 3 years ago #
7. 

   manitou
   Member

   Would you mind if i put a link to your github in the wiki instead of the link to the gist ?

   No problem, but give it a test flight first ...

   Posted 3 years ago #
8. 

   sei
   Member

   That's nice :)

   Sadly I can't get it running. I suspect my Touchshield is defect, as I don't get any sane readings from the Touchscreen. So the next thing I'll do is to organize an arduino and test if the shield ist ok.

   Posted 3 years ago #
9. 

   sei
   Member

   I checked my Touchshield with an arduino and it works flawlessly.
   But with the maple it just doesn't work. The readings don't change if I touch the screen or not and p.z is always 0.
   Do you have a special version of the touchshield or is it just the standard one ?

   Posted 3 years ago #
10. 

    manitou
    Member

    just standard device. ran it with both arduino and maple.
    on maple, touchscreen pins
    #define YP 18 // must be an analog pin
    #define XM 17 // must be an analog pin
    #define YM 9 // can be a digital pin
    #define XP 8 // can be a digital pin

    I also measured resistance as suggested

    // For better pressure precision, we need to know the resistance
    // between X+ and X- Use any multimeter to read it
    // For the one we're using, its 300 ohms across the X plate
    and used 361
    TouchScreen ts = TouchScreen(XP, YP, XM, YM, 361);

    you also might also try NUMSAMPLES 1 in TouchScreen.cpp
    one sketch liked it at 1 another at 2 ...

    Posted 3 years ago #

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