Adding example code for TFT FeatherWing V2

arduino and CircuitPython examples for the TFT FeatherWing V2 guide update

TFT_FeatherWing_TSC2007_Demos/Arduino_TouchPaint_TSC2007/Arduino_TouchPaint_TSC2007.ino

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+// SPDX-FileCopyrightText: 2023 Limor Fried/Ladyada for Adafruit Industries
+// SPDX-License-Identifier: MIT
+
+/***************************************************
+  This is our touchscreen painting example for the updated Adafruit
+  TFT FeatherWing V2 with TSC2007
+  ----> http://www.adafruit.com/products/3315
+
+  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 <Adafruit_GFX.h>
+#include <SPI.h>
+#include <Wire.h>
+#include <Adafruit_ILI9341.h>
+#include <Adafruit_TSC2007.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
+#define TS_MIN_PRESSURE 200
+
+Adafruit_TSC2007 ts;
+
+// The display also uses hardware SPI, plus #9 & #10
+#define TFT_CS 9
+#define TFT_DC 10
+Adafruit_ILI9341 tft = Adafruit_ILI9341(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) {
+
+  Serial.begin(115200);
+  // while (!Serial) delay(10);
+  
+  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(){
+  uint16_t x, y, z1, z2;
+  if (ts.read_touch(&x, &y, &z1, &z2) && (z1 > TS_MIN_PRESSURE)) {
+
+    Serial.print("Touch point: (");
+    Serial.print(x); Serial.print(", ");
+    Serial.print(y); Serial.print(", ");
+    Serial.print(z1); Serial.print(" / ");
+    Serial.print(z2); Serial.println(")");  
+   
+    // Scale from ~0->4000 to tft.width using the calibration #'s
+    x = map(x, TS_MINX, TS_MAXX, 0, tft.width());
+    y = map(y, TS_MINY, TS_MAXY, 0, tft.height());
+
+    if (y < BOXSIZE) {
+       oldcolor = currentcolor;
+  
+       if (x < BOXSIZE) { 
+         currentcolor = ILI9341_RED; 
+         tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
+       } else if (x < BOXSIZE*2) {
+         currentcolor = ILI9341_YELLOW;
+         tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
+       } else if (x < BOXSIZE*3) {
+         currentcolor = ILI9341_GREEN;
+         tft.drawRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
+       } else if (x < BOXSIZE*4) {
+         currentcolor = ILI9341_CYAN;
+         tft.drawRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
+       } else if (x < BOXSIZE*5) {
+         currentcolor = ILI9341_BLUE;
+         tft.drawRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
+       } else if (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 (((y-PENRADIUS) > BOXSIZE) && ((y+PENRADIUS) < tft.height())) {
+      tft.fillCircle(x, y, PENRADIUS, currentcolor);
+    }
+  }
+}

TFT_FeatherWing_TSC2007_Demos/CircuitPython/code.py

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+# SPDX-FileCopyrightText: 2023 Liz Clark for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+"""
+This test will initialize the display using displayio and display
+a bitmap image. The image advances when the touch screen is touched.
+
+Pinouts are for the 2.4" TFT FeatherWing V2
+"""
+import os
+import board
+import displayio
+import adafruit_ili9341
+import adafruit_tsc2007
+
+# Release any resources currently in use for the displays
+displayio.release_displays()
+
+# Use Hardware SPI
+spi = board.SPI()
+
+tft_cs = board.D9
+tft_dc = board.D10
+
+display_width = 320
+display_height = 240
+
+display_bus = displayio.FourWire(spi, command=tft_dc, chip_select=tft_cs)
+display = adafruit_ili9341.ILI9341(display_bus, width=display_width, height=display_height)
+
+i2c = board.STEMMA_I2C()
+
+irq_dio = None
+tsc = adafruit_tsc2007.TSC2007(i2c, irq=irq_dio)
+
+groups = []
+images = []
+for filename in os.listdir('/'):
+    if filename.lower().endswith('.bmp') and not filename.startswith('.'):
+        images.append("/"+filename)
+print(images)
+
+for i in range(len(images)):
+    splash = displayio.Group()
+    bitmap = displayio.OnDiskBitmap(images[i])
+    tile_grid = displayio.TileGrid(bitmap, pixel_shader=bitmap.pixel_shader)
+    splash.append(tile_grid)
+    groups.append(splash)
+
+index = 0
+touch_state = False
+
+display.show(groups[index])
+
+while True:
+    if tsc.touched and not touch_state:
+        point = tsc.touch
+        print("Touchpoint: (%d, %d, %d)" % (point["x"], point["y"], point["pressure"]))
+        # left side of the screen
+        if point["y"] < 2000:
+            index = (index - 1) % len(images)
+            display.show(groups[index])
+        # right side of the screen
+        else:
+            index = (index + 1) % len(images)
+            display.show(groups[index])
+        touch_state = True
+    if not tsc.touched and touch_state:
+        touch_state = False