525 lines
17 KiB
Plaintext
525 lines
17 KiB
Plaintext
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// This is a Processing sketch, see https://processing.org/ to download the IDE
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// The sketch is a client that requests TFT screenshots from an Arduino board.
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// The Arduino must call a screenshot server function to respond with pixels.
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// It has been created to work with the TFT_eSPI library here:
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// https://github.com/Bodmer/TFT_eSPI
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// The sketch must only be run when the designated serial port is available and enumerated
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// otherwise the screenshot window may freeze and that process will need to be terminated
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// This is a limitation of the Processing environment and not the sketch.
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// If anyone knows how to determine if a serial port is available at start up the PM me
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// on (Bodmer) the Arduino forum.
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// The block below contains variables that the user may need to change for a particular setup
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// As a minimum set the serial port and baud rate must be defined. The capture window is
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// automatically resized for landscape, portrait and different TFT resolutions.
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// Captured images are stored in the sketch folder, use the Processing IDE "Sketch" menu
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// option "Show Sketch Folder" or press Ctrl+K
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// Created by: Bodmer 5/3/17
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// Updated by: Bodmer 12/3/17
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// Version: 0.07
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// MIT licence applies, all text above must be included in derivative works
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// ###########################################################################################
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// # These are the values to change for a particular setup #
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// #
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int serial_port = 0; // Use enumerated value from list provided when sketch is run #
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// #
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// On an Arduino Due Programming Port use a baud rate of:115200) #
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// On an Arduino Due Native USB Port use a baud rate of any value #
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int serial_baud_rate = 921600; // #
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// #
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// Change the image file type saved here, comment out all but one #
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//String image_type = ".jpg"; // #
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String image_type = ".png"; // Lossless compression #
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//String image_type = ".bmp"; // #
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//String image_type = ".tif"; // #
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// #
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boolean save_border = true; // Save the image with a border #
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int border = 5; // Border pixel width #
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boolean fade = false; // Fade out image after saving #
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// #
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int max_images = 100; // Maximum of numbered file images before over-writing files #
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// #
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int max_allowed = 1000; // Maximum number of save images allowed before a restart #
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// #
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// # End of the values to change for a particular setup #
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// ###########################################################################################
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// These are default values, this sketch obtains the actual values from the Arduino board
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int tft_width = 480; // default TFT width (automatic - sent by Arduino)
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int tft_height = 480; // default TFT height (automatic - sent by Arduino)
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int color_bytes = 2; // 2 for 16 bit, 3 for three RGB bytes (automatic - sent by Arduino)
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import processing.serial.*;
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Serial serial; // Create an instance called serial
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int serialCount = 0; // Count of colour bytes arriving
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// Stage window graded background colours
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color bgcolor1 = color(0, 100, 104); // Arduino IDE style background color 1
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color bgcolor2 = color(77, 183, 187); // Arduino IDE style background color 2
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//color bgcolor2 = color(255, 255, 255); // White
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// TFT image frame greyscale value (dark grey)
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color frameColor = 42;
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color buttonStopped = color(255, 0, 0);
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color buttonRunning = color(128, 204, 206);
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color buttonDimmed = color(180, 0, 0);
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boolean dimmed = false;
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boolean running = true;
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boolean mouseClick = false;
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int[] rgb = new int[3]; // Buffer for the colour bytes
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int indexRed = 0; // Colour byte index in the array
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int indexGreen = 1;
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int indexBlue = 2;
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int n = 0;
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int x_offset = (500 - tft_width) /2; // Image offsets in the window
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int y_offset = 20;
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int xpos = 0, ypos = 0; // Current pixel position
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int beginTime = 0;
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int pixelWaitTime = 1000; // Maximum 1000ms wait for image pixels to arrive
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int lastPixelTime = 0; // Time that "image send" command was sent
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int requestTime = 0;
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int requestCount = 0;
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int state = 0; // State machine current state
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int progress_bar = 0; // Console progress bar dot count
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int pixel_count = 0; // Number of pixels read for 1 screen
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float percentage = 0; // Percentage of pixels received
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int saved_image_count = 0; // Stats - number of images processed
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int bad_image_count = 0; // Stats - number of images that had lost pixels
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String filename = "";
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int drawLoopCount = 0; // Used for the fade out
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void setup() {
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size(500, 540); // Stage size, can handle 480 pixels wide screen
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noStroke(); // No border on the next thing drawn
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noSmooth(); // No anti-aliasing to avoid adjacent pixel colour merging
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// Graded background and title
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drawWindow();
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frameRate(2000); // High frame rate so draw() loops fast
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// Print a list of the available serial ports
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println("-----------------------");
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println("Available Serial Ports:");
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println("-----------------------");
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printArray(Serial.list());
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println("-----------------------");
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print("Port currently used: [");
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print(serial_port);
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println("]");
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String portName = Serial.list()[serial_port];
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serial = new Serial(this, portName, serial_baud_rate);
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state = 99;
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}
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void draw() {
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if (mouseClick) buttonClicked();
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switch(state) {
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case 0: // Init varaibles, send start request
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if (running) {
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tint(0, 0, 0, 255);
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flushBuffer();
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println("");
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print("Ready: ");
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xpos = 0;
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ypos = 0;
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serialCount = 0;
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progress_bar = 0;
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pixel_count = 0;
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percentage = 0;
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drawLoopCount = frameCount;
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lastPixelTime = millis() + 1000;
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state = 1;
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} else {
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if (millis() > beginTime) {
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beginTime = millis() + 500;
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dimmed = !dimmed;
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if (dimmed) drawButton(buttonDimmed);
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else drawButton(buttonStopped);
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}
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}
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break;
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case 1: // Console message, give server some time
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print("requesting image ");
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serial.write("S");
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delay(10);
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beginTime = millis();
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requestTime = millis() + 1000;
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requestCount = 1;
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state = 2;
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break;
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case 2: // Get size and set start time for rendering duration report
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if (millis() > requestTime) {
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requestCount++;
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print("*");
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serial.clear();
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serial.write("S");
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if (requestCount > 32) {
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requestCount = 0;
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System.err.println(" - no response!");
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state = 0;
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}
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requestTime = millis() + 1000;
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}
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if ( getSize() == true ) { // Go to next state when we have the size and bits per pixel
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getFilename();
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flushBuffer(); // Precaution in case image header size increases in later versions
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lastPixelTime = millis() + 1000;
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beginTime = millis();
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state = 3;
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}
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break;
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case 3: // Request pixels and render returned RGB values
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state = renderPixels(); // State will change when all pixels are rendered
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// Request more pixels, changing the number requested allows the average transfer rate to be controlled
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// The pixel transfer rate is dependant on four things:
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// 1. The frame rate defined in this Processing sketch in setup()
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// 2. The baud rate of the serial link (~10 bit periods per byte)
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// 3. The number of request bytes 'R' sent in the lines below
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// 4. The number of pixels sent in a burst by the server sketch (defined via NPIXELS)
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//serial.write("RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR"); // 32 x NPIXELS more
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serial.write("RRRRRRRRRRRRRRRR"); // 16 x NPIXELS more
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//serial.write("RRRRRRRR"); // 8 x NPIXELS more
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//serial.write("RRRR"); // 4 x NPIXELS more
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//serial.write("RR"); // 2 x NPIXELS more
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//serial.write("R"); // 1 x NPIXELS more
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if (!running) state = 4;
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break;
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case 4: // Pixel receive time-out, flush serial buffer
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flushBuffer();
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state = 6;
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break;
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case 5: // Save the image to the sketch folder (Ctrl+K to access)
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saveScreenshot();
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saved_image_count++;
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println("Saved image count = " + saved_image_count);
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if (bad_image_count > 0) System.err.println(" Bad image count = " + bad_image_count);
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drawLoopCount = frameCount; // Reset value ready for counting in step 6
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state = 6;
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break;
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case 6: // Fade the old image if enabled
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if ( fadedImage() == true ) state = 0; // Go to next state when image has faded
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break;
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case 99: // Draw image viewer window
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drawWindow();
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delay(50); // Delay here seems to be required for the IDE console to get ready
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state = 0;
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break;
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default:
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println("");
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System.err.println("Error state reached - check sketch!");
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break;
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}
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}
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void drawWindow()
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{
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// Graded background in Arduino colours
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for (int i = 0; i < height - 25; i++) {
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float inter = map(i, 0, height - 25, 0, 1);
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color c = lerpColor(bgcolor1, bgcolor2, inter);
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stroke(c);
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line(0, i, 500, i);
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}
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fill(bgcolor2);
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rect( 0, height-25, width-1, 24);
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textAlign(CENTER);
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textSize(20);
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fill(0);
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text("Bodmer's TFT image viewer", width/2, height-6);
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if (running) drawButton(buttonRunning);
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else drawButton(buttonStopped);
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}
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void flushBuffer()
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{
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//println("Clearing serial pipe after a time-out");
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int clearTime = millis() + 50;
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while ( millis() < clearTime ) serial.clear();
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}
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boolean getSize()
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{
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if ( serial.available() > 6 ) {
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println();
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char code = (char)serial.read();
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if (code == 'W') {
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tft_width = serial.read()<<8 | serial.read();
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}
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code = (char)serial.read();
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if (code == 'H') {
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tft_height = serial.read()<<8 | serial.read();
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}
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code = (char)serial.read();
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if (code == 'Y') {
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int bits_per_pixel = (char)serial.read();
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if (bits_per_pixel == 24) color_bytes = 3;
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else color_bytes = 2;
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}
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code = (char)serial.read();
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if (code == '?') {
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drawWindow();
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x_offset = (500 - tft_width) /2;
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tint(0, 0, 0, 255);
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noStroke();
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fill(frameColor);
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rect((width - tft_width)/2 - border, y_offset - border, tft_width + 2 * border, tft_height + 2 * border);
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return true;
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}
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}
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return false;
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}
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void saveScreenshot()
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{
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println();
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if (saved_image_count < max_allowed)
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{
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if (filename == "") filename = "tft_screen_" + (n++);
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filename = filename + image_type;
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println("Saving image as \"" + filename + "\"");
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if (save_border)
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{
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PImage partialSave = get(x_offset - border, y_offset - border, tft_width + 2*border, tft_height + 2*border);
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partialSave.save(filename);
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} else {
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PImage partialSave = get(x_offset, y_offset, tft_width, tft_height);
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partialSave.save(filename);
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}
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if (n>=max_images) n = 0;
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}
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else
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{
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System.err.println(max_allowed + " saved image count exceeded, restart the sketch");
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}
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}
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void getFilename()
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{
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int readTime = millis() + 20;
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int inByte = 0;
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filename = "";
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while ( serial.available() > 0 && millis() < readTime && inByte != '.')
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{
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inByte = serial.read();
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if (inByte == ' ') inByte = '_';
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if ( unicodeCheck(inByte) ) filename += (char)inByte;
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}
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inByte = serial.read();
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if (inByte == '@') filename += "_" + timeCode();
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else if (inByte == '#') filename += "_" + saved_image_count%100;
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else if (inByte == '%') filename += "_" + millis();
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else if (inByte != '*') filename = "";
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inByte = serial.read();
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if (inByte == 'j') image_type =".jpg";
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else if (inByte == 'b') image_type =".bmp";
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else if (inByte == 'p') image_type =".png";
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else if (inByte == 't') image_type =".tif";
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}
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boolean unicodeCheck(int unicode)
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{
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if ( unicode >= '0' && unicode <= '9' ) return true;
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if ( (unicode >= 'A' && unicode <= 'Z' ) || (unicode >= 'a' && unicode <= 'z')) return true;
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if ( unicode == '_' || unicode == '/' ) return true;
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return false;
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}
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String timeCode()
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{
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String timeCode = (int)year() + "_" + (int)month() + "_" + (int)day() + "_";
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timeCode += (int)hour() + "_" + (int)minute() + "_" + (int)second();
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return timeCode;
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|
|
}
|
||
|
|
|
||
|
|
int renderPixels()
|
||
|
|
{
|
||
|
|
if ( serial.available() > 0 ) {
|
||
|
|
|
||
|
|
// Add the latest byte from the serial port to array:
|
||
|
|
while (serial.available()>0)
|
||
|
|
{
|
||
|
|
rgb[serialCount++] = serial.read();
|
||
|
|
|
||
|
|
// If we have 3 colour bytes:
|
||
|
|
if ( serialCount >= color_bytes ) {
|
||
|
|
serialCount = 0;
|
||
|
|
pixel_count++;
|
||
|
|
if (color_bytes == 3)
|
||
|
|
{
|
||
|
|
stroke(rgb[indexRed], rgb[indexGreen], rgb[indexBlue], 1000);
|
||
|
|
} else
|
||
|
|
{ // Can cater for various byte orders
|
||
|
|
//stroke( (rgb[0] & 0x1F)<<3, (rgb[0] & 0xE0)>>3 | (rgb[1] & 0x07)<<5, (rgb[1] & 0xF8));
|
||
|
|
//stroke( (rgb[1] & 0x1F)<<3, (rgb[1] & 0xE0)>>3 | (rgb[0] & 0x07)<<5, (rgb[0] & 0xF8));
|
||
|
|
stroke( (rgb[0] & 0xF8), (rgb[1] & 0xE0)>>3 | (rgb[0] & 0x07)<<5, (rgb[1] & 0x1F)<<3);
|
||
|
|
//stroke( (rgb[1] & 0xF8), (rgb[0] & 0xE0)>>3 | (rgb[1] & 0x07)<<5, (rgb[0] & 0x1F)<<3);
|
||
|
|
}
|
||
|
|
// We get some pixel merge aliasing if smooth() is defined, so draw pixel twice
|
||
|
|
point(xpos + x_offset, ypos + y_offset);
|
||
|
|
//point(xpos + x_offset, ypos + y_offset);
|
||
|
|
|
||
|
|
lastPixelTime = millis();
|
||
|
|
xpos++;
|
||
|
|
if (xpos >= tft_width) {
|
||
|
|
xpos = 0;
|
||
|
|
progressBar();
|
||
|
|
ypos++;
|
||
|
|
if (ypos>=tft_height) {
|
||
|
|
ypos = 0;
|
||
|
|
if ((int)percentage <100) {
|
||
|
|
while (progress_bar++ < 64) print(" ");
|
||
|
|
percent(100);
|
||
|
|
}
|
||
|
|
println("Image fetch time = " + (millis()-beginTime)/1000.0 + " s");
|
||
|
|
return 5;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else
|
||
|
|
{
|
||
|
|
if (millis() > (lastPixelTime + pixelWaitTime))
|
||
|
|
{
|
||
|
|
println("");
|
||
|
|
System.err.println(pixelWaitTime + "ms time-out for pixels exceeded...");
|
||
|
|
if (pixel_count > 0) {
|
||
|
|
bad_image_count++;
|
||
|
|
System.err.print("Pixels missing = " + (tft_width * tft_height - pixel_count));
|
||
|
|
System.err.println(", corrupted image not saved");
|
||
|
|
System.err.println("Good image count = " + saved_image_count);
|
||
|
|
System.err.println(" Bad image count = " + bad_image_count);
|
||
|
|
}
|
||
|
|
return 4;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 3;
|
||
|
|
}
|
||
|
|
|
||
|
|
void progressBar()
|
||
|
|
{
|
||
|
|
progress_bar++;
|
||
|
|
print(".");
|
||
|
|
if (progress_bar >63)
|
||
|
|
{
|
||
|
|
progress_bar = 0;
|
||
|
|
percentage = 0.5 + 100 * pixel_count/(0.001 + tft_width * tft_height);
|
||
|
|
percent(percentage);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void percent(float percentage)
|
||
|
|
{
|
||
|
|
if (percentage > 100) percentage = 100;
|
||
|
|
println(" [ " + (int)percentage + "% ]");
|
||
|
|
textAlign(LEFT);
|
||
|
|
textSize(16);
|
||
|
|
noStroke();
|
||
|
|
fill(bgcolor2);
|
||
|
|
rect(10, height - 25, 70, 20);
|
||
|
|
fill(0);
|
||
|
|
text(" [ " + (int)percentage + "% ]", 10, height-8);
|
||
|
|
}
|
||
|
|
|
||
|
|
boolean fadedImage()
|
||
|
|
{
|
||
|
|
int opacity = frameCount - drawLoopCount; // So we get increasing fade
|
||
|
|
if (fade)
|
||
|
|
{
|
||
|
|
tint(255, opacity);
|
||
|
|
//image(tft_img, x_offset, y_offset);
|
||
|
|
noStroke();
|
||
|
|
fill(50, 50, 50, opacity);
|
||
|
|
rect( (width - tft_width)/2, y_offset, tft_width, tft_height);
|
||
|
|
delay(10);
|
||
|
|
}
|
||
|
|
if (opacity > 50) // End fade after 50 cycles
|
||
|
|
{
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
void drawButton(color buttonColor)
|
||
|
|
{
|
||
|
|
stroke(0);
|
||
|
|
fill(buttonColor);
|
||
|
|
rect(500 - 100, 540 - 26, 80, 24);
|
||
|
|
textAlign(CENTER);
|
||
|
|
textSize(20);
|
||
|
|
fill(0);
|
||
|
|
if (running) text(" Pause ", 500 - 60, height-7);
|
||
|
|
else text(" Run ", 500 - 60, height-7);
|
||
|
|
}
|
||
|
|
|
||
|
|
void buttonClicked()
|
||
|
|
{
|
||
|
|
mouseClick = false;
|
||
|
|
if (running) {
|
||
|
|
running = false;
|
||
|
|
drawButton(buttonStopped);
|
||
|
|
System.err.println("");
|
||
|
|
System.err.println("Stopped - click 'Run' button: ");
|
||
|
|
//noStroke();
|
||
|
|
//fill(50);
|
||
|
|
//rect( (width - tft_width)/2, y_offset, tft_width, tft_height);
|
||
|
|
beginTime = millis() + 500;
|
||
|
|
dimmed = false;
|
||
|
|
state = 4;
|
||
|
|
} else {
|
||
|
|
running = true;
|
||
|
|
drawButton(buttonRunning);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void mousePressed() {
|
||
|
|
if (mouseX > (500 - 100) && mouseX < (500 - 20) && mouseY > (540 - 26) && mouseY < (540 - 2)) {
|
||
|
|
mouseClick = true;
|
||
|
|
}
|
||
|
|
}
|