Hello,

I'm getting the Teensy "error compiling" message when trying to use any of the example sketches for the ILI9341 touchscreen. I'm not sure if there is something in the code that is specific for an arduino nano, or if something is wrong with my libraries. I am getting error messages about a "KINETISK_SPIO" that I don't understand. Any help would be greatly appreciated!

Here is the error message:

Arduino: 1.8.9 (Mac OS X), TD: 1.46, Board: "Teensy LC, Serial + MIDI, 48 MHz, Smallest Code, US English"

In file included from /Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/examples/touchpaint/touchpaint.ino:19:0:
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::waitFifoNotFull()':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:178:9: error: 'KINETISK_SPI0' was not declared in this scope
sr = KINETISK_SPI0.SR;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::waitFifoEmpty()':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:187:9: error: 'KINETISK_SPI0' was not declared in this scope
sr = KINETISK_SPI0.SR;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::waitTransmitComplete()':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:193:12: error: 'KINETISK_SPI0' was not declared in this scope
while (!(KINETISK_SPI0.SR & SPI_SR_TCF)) ; // wait until final output done
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:193:31: error: 'SPI_SR_TCF' was not declared in this scope
while (!(KINETISK_SPI0.SR & SPI_SR_TCF)) ; // wait until final output done
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:194:9: error: 'KINETISK_SPI0' was not declared in this scope
tmp = KINETISK_SPI0.POPR; // drain the final RX FIFO word
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::writecommand_cont(uint8_t)':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:197:3: error: 'KINETISK_SPI0' was not declared in this scope
KINETISK_SPI0.PUSHR = c | (pcs_command << 16) | SPI_PUSHR_CTAS(0) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:197:67: error: 'SPI_PUSHR_CTAS' was not declared in this scope
KINETISK_SPI0.PUSHR = c | (pcs_command << 16) | SPI_PUSHR_CTAS(0) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:197:71: error: 'SPI_PUSHR_CONT' was not declared in this scope
KINETISK_SPI0.PUSHR = c | (pcs_command << 16) | SPI_PUSHR_CTAS(0) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::writedata8_cont(uint8_t)':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:201:3: error: 'KINETISK_SPI0' was not declared in this scope
KINETISK_SPI0.PUSHR = c | (pcs_data << 16) | SPI_PUSHR_CTAS(0) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:201:64: error: 'SPI_PUSHR_CTAS' was not declared in this scope
KINETISK_SPI0.PUSHR = c | (pcs_data << 16) | SPI_PUSHR_CTAS(0) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:201:68: error: 'SPI_PUSHR_CONT' was not declared in this scope
KINETISK_SPI0.PUSHR = c | (pcs_data << 16) | SPI_PUSHR_CTAS(0) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::writedata16_cont(uint16_t)':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:205:3: error: 'KINETISK_SPI0' was not declared in this scope
KINETISK_SPI0.PUSHR = d | (pcs_data << 16) | SPI_PUSHR_CTAS(1) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:205:64: error: 'SPI_PUSHR_CTAS' was not declared in this scope
KINETISK_SPI0.PUSHR = d | (pcs_data << 16) | SPI_PUSHR_CTAS(1) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:205:68: error: 'SPI_PUSHR_CONT' was not declared in this scope
KINETISK_SPI0.PUSHR = d | (pcs_data << 16) | SPI_PUSHR_CTAS(1) | SPI_PUSHR_CONT;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::writecommand_last(uint8_t)':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:210:3: error: 'KINETISK_SPI0' was not declared in this scope
KINETISK_SPI0.SR = SPI_SR_TCF;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:210:22: error: 'SPI_SR_TCF' was not declared in this scope
KINETISK_SPI0.SR = SPI_SR_TCF;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:211:67: error: 'SPI_PUSHR_CTAS' was not declared in this scope
KINETISK_SPI0.PUSHR = c | (pcs_command << 16) | SPI_PUSHR_CTAS(0);
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::writedata8_last(uint8_t)':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:216:3: error: 'KINETISK_SPI0' was not declared in this scope
KINETISK_SPI0.SR = SPI_SR_TCF;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:216:22: error: 'SPI_SR_TCF' was not declared in this scope
KINETISK_SPI0.SR = SPI_SR_TCF;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:217:64: error: 'SPI_PUSHR_CTAS' was not declared in this scope
KINETISK_SPI0.PUSHR = c | (pcs_data << 16) | SPI_PUSHR_CTAS(0);
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h: In member function 'void ILI9341_t3::writedata16_last(uint16_t)':
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:222:3: error: 'KINETISK_SPI0' was not declared in this scope
KINETISK_SPI0.SR = SPI_SR_TCF;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:222:22: error: 'SPI_SR_TCF' was not declared in this scope
KINETISK_SPI0.SR = SPI_SR_TCF;
^
/Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3/ILI9341_t3.h:223:64: error: 'SPI_PUSHR_CTAS' was not declared in this scope
KINETISK_SPI0.PUSHR = d | (pcs_data << 16) | SPI_PUSHR_CTAS(1);
^
Multiple libraries were found for "Adafruit_STMPE610.h"
Used: /Users/DrEcho/Documents/Arduino/libraries/Adafruit_STMPE610
Not used: /Applications/Arduino.app/Contents/Java/hardware/teensy/avr/libraries/Adafruit_STMPE610
Multiple libraries were found for "ILI9341_t3.h"
Used: /Users/DrEcho/Documents/Arduino/libraries/ILI9341_t3
Not used: /Applications/Arduino.app/Contents/Java/hardware/teensy/avr/libraries/ILI9341_t3
Error compiling for board Teensy LC.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

And here is the code
Code:
/***************************************************
  This is our touchscreen painting example for the Adafruit ILI9341 Shield
  ----> http://www.adafruit.com/products/1651

  Check out the links above for our tutorials and wiring diagrams
  These displays use SPI to communicate, 4 or 5 pins are required to
  interface (RST is optional)
  Adafruit invests time and resources providing this open source code,
  please support Adafruit and open-source hardware by purchasing
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.
  MIT license, all text above must be included in any redistribution
 ****************************************************/


#include <SPI.h>
#include <Wire.h>      // this is needed even tho we aren't using it
#include <ILI9341_t3.h>
#include <Adafruit_STMPE610.h>

// This is calibration data for the raw touch data to the screen coordinates
#define TS_MINX 150
#define TS_MINY 130
#define TS_MAXX 3800
#define TS_MAXY 4000

// The STMPE610 uses hardware SPI on the shield, and #8
#define STMPE_CS 8
Adafruit_STMPE610 ts = Adafruit_STMPE610(STMPE_CS);

// The display also uses hardware SPI, plus #9 & #10
#define TFT_CS 10
#define TFT_DC  9
ILI9341_t3 tft = ILI9341_t3(TFT_CS, TFT_DC);

// Size of the color selection boxes and the paintbrush size
#define BOXSIZE 40
#define PENRADIUS 3
int oldcolor, currentcolor;

void setup(void) {
 // while (!Serial);     // used for leonardo debugging
 
  Serial.begin(9600);
  Serial.println(F("Touch Paint!"));
  
  tft.begin();

  if (!ts.begin()) {
    Serial.println("Couldn't start touchscreen controller");
    while (1);
  }
  Serial.println("Touchscreen started");
  
  tft.fillScreen(ILI9341_BLACK);
  
  // make the color selection boxes
  tft.fillRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_RED);
  tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
  tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_GREEN);
  tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_CYAN);
  tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_BLUE);
  tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_MAGENTA);
 
  // select the current color 'red'
  tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  currentcolor = ILI9341_RED;
}


void loop()
{
  // See if there's any  touch data for us
  if (ts.bufferEmpty()) {
    return;
  }
  /*
  // You can also wait for a touch
  if (! ts.touched()) {
    return;
  }
  */

  // Retrieve a point  
  TS_Point p = ts.getPoint();
  
 /*
  Serial.print("X = "); Serial.print(p.x);
  Serial.print("\tY = "); Serial.print(p.y);
  Serial.print("\tPressure = "); Serial.println(p.z);  
 */
 
  // Scale from ~0->4000 to tft.width using the calibration #'s
  p.x = map(p.x, TS_MINX, TS_MAXX, 0, tft.width());
  p.y = map(p.y, TS_MINY, TS_MAXY, 0, tft.height());

  /*
  Serial.print("("); Serial.print(p.x);
  Serial.print(", "); Serial.print(p.y);
  Serial.println(")");
  */

  if (p.y < BOXSIZE) {
     oldcolor = currentcolor;

     if (p.x < BOXSIZE) { 
       currentcolor = ILI9341_RED; 
       tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*2) {
       currentcolor = ILI9341_YELLOW;
       tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*3) {
       currentcolor = ILI9341_GREEN;
       tft.drawRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*4) {
       currentcolor = ILI9341_CYAN;
       tft.drawRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*5) {
       currentcolor = ILI9341_BLUE;
       tft.drawRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*6) {
       currentcolor = ILI9341_MAGENTA;
       tft.drawRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     }

     if (oldcolor != currentcolor) {
        if (oldcolor == ILI9341_RED) 
          tft.fillRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_RED);
        if (oldcolor == ILI9341_YELLOW) 
          tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
        if (oldcolor == ILI9341_GREEN) 
          tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_GREEN);
        if (oldcolor == ILI9341_CYAN) 
          tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_CYAN);
        if (oldcolor == ILI9341_BLUE) 
          tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_BLUE);
        if (oldcolor == ILI9341_MAGENTA) 
          tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_MAGENTA);
     }
  }
  if (((p.y-PENRADIUS) > BOXSIZE) && ((p.y+PENRADIUS) < tft.height())) {
    tft.fillCircle(p.x, p.y, PENRADIUS, currentcolor);
  }
}