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Tasmota/lib/Adafruit_ILI9341-1.2.0-Tasm.../examples/fulltest_featherwing/fulltest_featherwing.ino

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/***************************************************
This is our touchscreen painting example for the Adafruit TFT FeatherWing
----> http://www.adafruit.com/products/3315
Check out the links above for our tutorials and wiring diagrams
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 <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_ILI9341.h> // Hardware-specific library
#include <SD.h>
#include <Adafruit_STMPE610.h>
#ifdef ESP8266
#define STMPE_CS 16
#define TFT_CS 0
#define TFT_DC 15
#define SD_CS 2
#endif
#ifdef ESP32
#define STMPE_CS 32
#define TFT_CS 15
#define TFT_DC 33
#define SD_CS 14
#endif
#ifdef TEENSYDUINO
#define TFT_DC 10
#define TFT_CS 4
#define STMPE_CS 3
#define SD_CS 8
#endif
#ifdef ARDUINO_STM32_FEATHER
#define TFT_DC PB4
#define TFT_CS PA15
#define STMPE_CS PC7
#define SD_CS PC5
#endif
#ifdef ARDUINO_NRF52_FEATHER /* BSP 0.6.5 and higher! */
#define TFT_DC 11
#define TFT_CS 31
#define STMPE_CS 30
#define SD_CS 27
#endif
#if defined(ARDUINO_MAX32620FTHR) || defined(ARDUINO_MAX32630FTHR)
#define TFT_DC P5_4
#define TFT_CS P5_3
#define STMPE_CS P3_3
#define SD_CS P3_2
#endif
// Anything else!
#if defined (__AVR_ATmega32U4__) || defined(ARDUINO_SAMD_FEATHER_M0) || defined (__AVR_ATmega328P__) || defined(ARDUINO_SAMD_ZERO) || defined(__SAMD51__) || defined(__SAM3X8E__)
#define STMPE_CS 6
#define TFT_CS 9
#define TFT_DC 10
#define SD_CS 5
#endif
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
Adafruit_STMPE610 ts = Adafruit_STMPE610(STMPE_CS);
// This is calibration data for the raw touch data to the screen coordinates
#define TS_MINX 3800
#define TS_MAXX 100
#define TS_MINY 100
#define TS_MAXY 3750
#define PENRADIUS 3
void setup(void) {
Serial.begin(115200);
delay(10);
Serial.println("FeatherWing TFT");
if (!ts.begin()) {
Serial.println("Couldn't start touchscreen controller");
while (1);
}
Serial.println("Touchscreen started");
tft.begin();
tft.fillScreen(ILI9341_BLUE);
yield();
Serial.print("Initializing SD card...");
if (!SD.begin(SD_CS)) {
Serial.println("failed!");
}
Serial.println("OK!");
bmpDraw("purple.bmp", 0, 0);
}
void loop() {
// 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());
if (((p.y-PENRADIUS) > 0) && ((p.y+PENRADIUS) < tft.height())) {
tft.fillCircle(p.x, p.y, PENRADIUS, ILI9341_RED);
}
}
// This function opens a Windows Bitmap (BMP) file and
// displays it at the given coordinates. It's sped up
// by reading many pixels worth of data at a time
// (rather than pixel by pixel). Increasing the buffer
// size takes more of the Arduino's precious RAM but
// makes loading a little faster. 20 pixels seems a
// good balance.
#define BUFFPIXEL 20
void bmpDraw(char *filename, int16_t x, int16_t y) {
File bmpFile;
int bmpWidth, bmpHeight; // W+H in pixels
uint8_t bmpDepth; // Bit depth (currently must be 24)
uint32_t bmpImageoffset; // Start of image data in file
uint32_t rowSize; // Not always = bmpWidth; may have padding
uint8_t sdbuffer[3*BUFFPIXEL]; // pixel buffer (R+G+B per pixel)
uint8_t buffidx = sizeof(sdbuffer); // Current position in sdbuffer
boolean goodBmp = false; // Set to true on valid header parse
boolean flip = true; // BMP is stored bottom-to-top
int w, h, row, col;
uint8_t r, g, b;
uint32_t pos = 0, startTime = millis();
if((x >= tft.width()) || (y >= tft.height())) return;
Serial.println();
Serial.print(F("Loading image '"));
Serial.print(filename);
Serial.println('\'');
// Open requested file on SD card
if ((bmpFile = SD.open(filename)) == NULL) {
Serial.print(F("File not found"));
return;
}
// Parse BMP header
if(read16(bmpFile) == 0x4D42) { // BMP signature
Serial.print(F("File size: ")); Serial.println(read32(bmpFile));
(void)read32(bmpFile); // Read & ignore creator bytes
bmpImageoffset = read32(bmpFile); // Start of image data
Serial.print(F("Image Offset: ")); Serial.println(bmpImageoffset, DEC);
// Read DIB header
Serial.print(F("Header size: ")); Serial.println(read32(bmpFile));
bmpWidth = read32(bmpFile);
bmpHeight = read32(bmpFile);
if(read16(bmpFile) == 1) { // # planes -- must be '1'
bmpDepth = read16(bmpFile); // bits per pixel
Serial.print(F("Bit Depth: ")); Serial.println(bmpDepth);
if((bmpDepth == 24) && (read32(bmpFile) == 0)) { // 0 = uncompressed
goodBmp = true; // Supported BMP format -- proceed!
Serial.print(F("Image size: "));
Serial.print(bmpWidth);
Serial.print('x');
Serial.println(bmpHeight);
// BMP rows are padded (if needed) to 4-byte boundary
rowSize = (bmpWidth * 3 + 3) & ~3;
// If bmpHeight is negative, image is in top-down order.
// This is not canon but has been observed in the wild.
if(bmpHeight < 0) {
bmpHeight = -bmpHeight;
flip = false;
}
// Crop area to be loaded
w = bmpWidth;
h = bmpHeight;
if((x+w-1) >= tft.width()) w = tft.width() - x;
if((y+h-1) >= tft.height()) h = tft.height() - y;
// Set TFT address window to clipped image bounds
tft.startWrite();
tft.setAddrWindow(x, y, w, h);
for (row=0; row<h; row++) { // For each scanline...
// Seek to start of scan line. It might seem labor-
// intensive to be doing this on every line, but this
// method covers a lot of gritty details like cropping
// and scanline padding. Also, the seek only takes
// place if the file position actually needs to change
// (avoids a lot of cluster math in SD library).
if(flip) // Bitmap is stored bottom-to-top order (normal BMP)
pos = bmpImageoffset + (bmpHeight - 1 - row) * rowSize;
else // Bitmap is stored top-to-bottom
pos = bmpImageoffset + row * rowSize;
if(bmpFile.position() != pos) { // Need seek?
tft.endWrite();
bmpFile.seek(pos);
buffidx = sizeof(sdbuffer); // Force buffer reload
}
for (col=0; col<w; col++) { // For each pixel...
// Time to read more pixel data?
if (buffidx >= sizeof(sdbuffer)) { // Indeed
tft.endWrite();
bmpFile.read(sdbuffer, sizeof(sdbuffer));
tft.startWrite();
buffidx = 0; // Set index to beginning
}
// Convert pixel from BMP to TFT format, push to display
b = sdbuffer[buffidx++];
g = sdbuffer[buffidx++];
r = sdbuffer[buffidx++];
tft.pushColor(tft.color565(r,g,b));
} // end pixel
tft.endWrite();
} // end scanline
Serial.print(F("Loaded in "));
Serial.print(millis() - startTime);
Serial.println(" ms");
} // end goodBmp
}
}
bmpFile.close();
if(!goodBmp) Serial.println(F("BMP format not recognized."));
}
// These read 16- and 32-bit types from the SD card file.
// BMP data is stored little-endian, Arduino is little-endian too.
// May need to reverse subscript order if porting elsewhere.
uint16_t read16(File &f) {
uint16_t result;
((uint8_t *)&result)[0] = f.read(); // LSB
((uint8_t *)&result)[1] = f.read(); // MSB
return result;
}
uint32_t read32(File &f) {
uint32_t result;
((uint8_t *)&result)[0] = f.read(); // LSB
((uint8_t *)&result)[1] = f.read();
((uint8_t *)&result)[2] = f.read();
((uint8_t *)&result)[3] = f.read(); // MSB
return result;
}
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