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90
libraries/LovyanGFX/examples/Standard/Graph/Graph.ino
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90
libraries/LovyanGFX/examples/Standard/Graph/Graph.ino
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#include <LovyanGFX.hpp>
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#include <vector>
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#define LINE_COUNT 6
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static LGFX lcd;
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static std::vector<int> points[LINE_COUNT];
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static int colors[] = { TFT_RED, TFT_GREEN, TFT_BLUE, TFT_CYAN, TFT_MAGENTA, TFT_YELLOW };
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static int xoffset, yoffset, point_count;
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int getBaseColor(int x, int y)
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{
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return ((x^y)&3 || ((x-xoffset)&31 && y&31) ? TFT_BLACK : ((!y || x == xoffset) ? TFT_WHITE : TFT_DARKGREEN));
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}
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void setup(void)
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{
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lcd.init();
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if (lcd.width() < lcd.height()) lcd.setRotation(lcd.getRotation() ^ 1);
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yoffset = lcd.height() >> 1;
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xoffset = lcd.width() >> 1;
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point_count = lcd.width() + 1;
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for (int i = 0; i < LINE_COUNT; i++)
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{
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points[i].resize(point_count);
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}
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lcd.startWrite();
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lcd.setAddrWindow(0, 0, lcd.width(), lcd.height());
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for (int y = 0; y < lcd.height(); y++)
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{
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for (int x = 0; x < lcd.width(); x++)
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{
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lcd.writeColor(getBaseColor(x, y - yoffset), 1);
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}
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}
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lcd.endWrite();
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}
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void loop(void)
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{
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static int prev_sec;
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static int fps;
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++fps;
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int sec = millis() / 1000;
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if (prev_sec != sec)
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{
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prev_sec = sec;
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lcd.setCursor(0,0);
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lcd.printf("fps:%03d", fps);
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fps = 0;
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}
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static int count;
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for (int i = 0; i < LINE_COUNT; i++)
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{
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points[i][count % point_count] = (sinf((float)count / (10 + 30 * i))+sinf((float)count / (13 + 37 * i))) * (lcd.height() >> 2);
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}
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++count;
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lcd.startWrite();
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int index1 = count % point_count;
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for (int x = 0; x < point_count-1; x++)
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{
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int index0 = index1;
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index1 = (index0 +1) % point_count;
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for (int i = 0; i < LINE_COUNT; i++)
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{
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int y = points[i][index0];
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if (y != points[i][index1])
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{
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lcd.writePixel(x, y + yoffset, getBaseColor(x, y));
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}
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}
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for (int i = 0; i < LINE_COUNT; i++)
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{
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int y = points[i][index1];
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lcd.writePixel(x, y + yoffset, colors[i]);
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}
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}
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lcd.endWrite();
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}
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#define LGFX_AUTODETECT
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#include <LovyanGFX.hpp>
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LGFX lcd;
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LGFX_Sprite canvas;
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static constexpr char text[] = "Hello world ! こんにちは世界！ this is long long string sample. 寿限無、寿限無、五劫の擦り切れ、海砂利水魚の、水行末・雲来末・風来末、喰う寝る処に住む処、藪ら柑子の藪柑子、パイポ・パイポ・パイポのシューリンガン、シューリンガンのグーリンダイ、グーリンダイのポンポコピーのポンポコナの、長久命の長助";
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static constexpr size_t textlen = sizeof(text) / sizeof(text[0]);
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size_t textpos = 0;
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void setup(void)
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{
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lcd.init();
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// 画面が横長になるように回転
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if (lcd.width() < lcd.height()) lcd.setRotation(lcd.getRotation() ^ 1);
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canvas.setColorDepth(8);
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canvas.setFont(&fonts::lgfxJapanMinchoP_32);
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canvas.setTextWrap(false); // 右端到達時のカーソル折り返しを禁止
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canvas.createSprite(lcd.width() + 36, 36); // 画面幅+１文字分の横幅を用意
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}
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void loop(void)
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{
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int32_t cursor_x = canvas.getCursorX() - 1; // 現在のカーソル位置を取得し、1ドット左に移動
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if (cursor_x <= 0) // カーソル位置が左端に到達している場合は一周したと判断
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{
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textpos = 0; // 文字列の読取り位置をリセット
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cursor_x = lcd.width(); // 新たな文字が画面右端に描画されるようにカーソル位置を変更
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}
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canvas.setCursor(cursor_x, 0); // カーソル位置を更新
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canvas.scroll(-1, 0); // キャンバスの内容を1ドット左にスクロール
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while (textpos < textlen && cursor_x <= lcd.width()) // 画面右端に文字が書けるか判定
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{
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canvas.print(text[textpos++]); // 1バイトずつ出力 (マルチバイト文字でもこの処理で動作します)
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cursor_x = canvas.getCursorX(); // 出力後のカーソル位置を取得
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}
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canvas.pushSprite(&lcd, 0, 0);
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}
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144
libraries/LovyanGFX/examples/Standard/SaveBMP/SaveBMP.ino
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144
libraries/LovyanGFX/examples/Standard/SaveBMP/SaveBMP.ino
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#if defined (ARDUINO_WIO_TERMINAL)
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#include <Seeed_FS.h>
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#include <SD/Seeed_SD.h>
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#else
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#include <SD.h>
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#include <SPIFFS.h>
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#endif
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#include <LovyanGFX.hpp>
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static LGFX lcd;
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static constexpr char filename[] = "/lovyangfx_test.bmp";
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#ifndef SDCARD_SS_PIN
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#define SDCARD_SS_PIN 4
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#endif
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#ifndef SDCARD_SPI
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#define SDCARD_SPI SPI
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#endif
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bool saveToSD_16bit(void)
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{
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bool result = false;
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File file = SD.open(filename, "w");
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if (file)
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{
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int width = lcd.width();
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int height = lcd.height();
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int rowSize = (2 * width + 3) & ~ 3;
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lgfx::bitmap_header_t bmpheader;
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bmpheader.bfType = 0x4D42;
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bmpheader.bfSize = rowSize * height + sizeof(bmpheader);
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bmpheader.bfOffBits = sizeof(bmpheader);
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bmpheader.biSize = 40;
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bmpheader.biWidth = width;
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bmpheader.biHeight = height;
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bmpheader.biPlanes = 1;
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bmpheader.biBitCount = 16;
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bmpheader.biCompression = 3;
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file.write((std::uint8_t*)&bmpheader, sizeof(bmpheader));
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std::uint8_t buffer[rowSize];
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memset(&buffer[rowSize - 4], 0, 4);
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for (int y = lcd.height() - 1; y >= 0; y--)
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{
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lcd.readRect(0, y, lcd.width(), 1, (lgfx::rgb565_t*)buffer);
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file.write(buffer, rowSize);
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}
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file.close();
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result = true;
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}
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else
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{
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Serial.print("error:file open failure\n");
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}
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return result;
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}
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bool saveToSD_24bit(void)
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{
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bool result = false;
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File file = SD.open(filename, "w");
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if (file)
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{
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int width = lcd.width();
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int height = lcd.height();
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int rowSize = (3 * width + 3) & ~ 3;
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lgfx::bitmap_header_t bmpheader;
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bmpheader.bfType = 0x4D42;
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bmpheader.bfSize = rowSize * height + sizeof(bmpheader);
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bmpheader.bfOffBits = sizeof(bmpheader);
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bmpheader.biSize = 40;
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bmpheader.biWidth = width;
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bmpheader.biHeight = height;
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bmpheader.biPlanes = 1;
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bmpheader.biBitCount = 24;
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bmpheader.biCompression = 0;
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file.write((std::uint8_t*)&bmpheader, sizeof(bmpheader));
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std::uint8_t buffer[rowSize];
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memset(&buffer[rowSize - 4], 0, 4);
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for (int y = lcd.height() - 1; y >= 0; y--)
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{
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lcd.readRect(0, y, lcd.width(), 1, (lgfx::rgb888_t*)buffer);
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file.write(buffer, rowSize);
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}
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file.close();
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result = true;
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}
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else
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{
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Serial.print("error:file open failure\n");
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}
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return result;
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}
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void setup(void)
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{
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lcd.init();
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Serial.begin(115200);
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lcd.setColorDepth(16);
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lcd.setColor(TFT_WHITE);
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lcd.startWrite();
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lcd.setAddrWindow(0, 0, lcd.width(), lcd.height());
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for (int y = 0; y < lcd.height(); ++y)
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{
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for (int x = 0; x < lcd.width(); ++x)
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{
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lcd.writeColor( lcd.color888(x << 1, x + y, y << 1), 1);
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}
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}
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lcd.print("BMP save test\n");
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lcd.endWrite();
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do {
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SD.end();
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delay(1000);
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SD.begin(SDCARD_SS_PIN, SDCARD_SPI, 25000000);
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} while (!saveToSD_16bit());
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lcd.print("BMP save success.");
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}
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void loop(void)
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{
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lcd.drawBmpFile(SD, filename, random(-20,20), random(-20, 20));
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}
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94
libraries/LovyanGFX/examples/Standard/SavePNG/SavePNG.ino
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94
libraries/LovyanGFX/examples/Standard/SavePNG/SavePNG.ino
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#if defined (ARDUINO_WIO_TERMINAL)
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#include <Seeed_FS.h>
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#include <SD/Seeed_SD.h>
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#else
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#include <SD.h>
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#include <SPIFFS.h>
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#endif
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#include <LovyanGFX.hpp>
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static LGFX lcd;
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static constexpr char filename[] = "/lovyangfx_test.png";
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#ifndef SDCARD_SS_PIN
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#define SDCARD_SS_PIN 4
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#endif
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#ifndef SDCARD_SPI
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#define SDCARD_SPI SPI
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#endif
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bool saveToSD(void)
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{
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// createPng関数で指定範囲の画像からPNG形式のデータを生成します。
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// SAMD51の場合 172x172程度が上限です。
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// ESP32の場合 192x192程度が上限です。
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// メモリ使用状況によってさらに縮みます。
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// ESP32でPSRAMが有効な場合は大きなサイズでも保存できる可能性があります。
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std::size_t dlen;
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std::uint8_t* png = (std::uint8_t*)lcd.createPng(&dlen, 0, 0, 128, 128);
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if (!png)
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{
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Serial.print("error:createPng\n");
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return false;
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}
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Serial.print("success:createPng\n");
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bool result = false;
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File file = SD.open(filename, "w");
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if (file)
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{
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file.write((std::uint8_t*)png, dlen);
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file.close();
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result = true;
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}
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else
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{
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Serial.print("error:file open failure\n");
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}
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free(png);
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return result;
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}
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void setup(void)
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{
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lcd.init();
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Serial.begin(115200);
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lcd.setColorDepth(24);
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lcd.setColor(TFT_WHITE);
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lcd.startWrite();
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lcd.setAddrWindow(0, 0, lcd.width(), lcd.height());
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for (int y = 0; y < lcd.height(); ++y)
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{
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for (int x = 0; x < lcd.width(); ++x)
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{
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lcd.writeColor( lcd.color888(x << 1, x + y, y << 1), 1);
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}
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}
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lcd.print("PNG save test\n");
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lcd.endWrite();
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do {
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SD.end();
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delay(1000);
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SD.begin(SDCARD_SS_PIN, SDCARD_SPI, 25000000);
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} while (!saveToSD());
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lcd.print("PNG save success.");
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}
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void loop(void)
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{
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lcd.drawPngFile(SD, filename, random(-20,20), random(-20, 20));
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}
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