| 【Arduino】168种传感器模块系列实验(资料代码+仿真编程+图形编程)   实验一百六十五:2.4寸TFT液晶触摸屏 彩屏模块 TFT-LCD 高清真彩显示屏   项目之四:KBV图形与字符串显示的综合测试   实验开源代码: 
 复制代码/*
  【Arduino】168种传感器模块系列实验(资料代码+仿真编程+图形编程)
  实验一百六十五:2.4寸TFT液晶触摸屏 彩屏模块 TFT-LCD 高清真彩显示屏
  项目之四:KBV图形与字符串显示的综合测试
  模块直插,引脚用法如下:
  LCD_CS LCD_CD LCD_WR LCD_RD LCD_RST SD_SS SD_DI SD_DO SD_SCK
  Arduino Uno A3 A2 A1 A0 A4 10 11 12 13
  LCD_D0 LCD_D1 LCD_D2 LCD_D3 LCD_D4 LCD_D5 LCD_D6 LCD_D7
  Arduino Uno 8 9 2 3 4 5 6 7
*/
#define LCD_CS A3 // 片选进入模拟A3
#define LCD_CD A2 // 命令/数据进入模拟A2
#define LCD_WR A1 // LCD 写入到模拟A1
#define LCD_RD A0 // LCD 读取进入模拟A0
#define LCD_RESET A4 //也可以只连接到 Arduino 的复位引脚
#include <SPI.h>
#include "Adafruit_GFX.h"// 导入特定硬件的库
#include <MCUFRIEND_kbv.h>
MCUFRIEND_kbv tft;
//#include <Adafruit_TFTLCD.h>
//Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
// 为一些常见的 16 位颜色值分配人类可读的名称
#define        BLACK   0x0000
#define        BLUE    0x001F
#define        RED     0xF800
#define        GREEN   0x07E0
#define CYAN    0x07FF
#define MAGENTA 0xF81F
#define YELLOW  0xFFE0
#define WHITE   0xFFFF
#ifndef min
#define min(a, b) (((a) < (b)) ? (a) : (b))
#endif
void setup(void);
void loop(void);
unsigned long testFillScreen();
unsigned long testText();
unsigned long testLines(uint16_t color);
unsigned long testFastLines(uint16_t color1, uint16_t color2);
unsigned long testRects(uint16_t color);
unsigned long testFilledRects(uint16_t color1, uint16_t color2);
unsigned long testFilledCircles(uint8_t radius, uint16_t color);
unsigned long testCircles(uint8_t radius, uint16_t color);
unsigned long testTriangles();
unsigned long testFilledTriangles();
unsigned long testRoundRects();
unsigned long testFilledRoundRects();
void progmemPrint(const char *str);
void progmemPrintln(const char *str);
void runtests(void);
uint16_t g_identifier;
extern const uint8_t hanzi[];
void showhanzi(unsigned int x, unsigned int y, unsigned char index)
{
  uint8_t i, j, c, first = 1;
  uint8_t *temp = (uint8_t*)hanzi;
  uint16_t color;
  tft.setAddrWindow(x, y, x + 31, y + 31); //设置区域
  temp += index * 128;
  for (j = 0; j < 128; j++)
  {
    c = pgm_read_byte(temp);
    for (i = 0; i < 8; i++)
    {
      if ((c & (1 << i)) != 0)
      {
        color = RED;
      }
      else
      {
        color = BLACK;
      }
      tft.pushColors(&color, 1, first);
      first = 0;
    }
    temp++;
  }
}
void setup(void) {
  Serial.begin(9600);
  uint32_t when = millis();
  //    while (!Serial) ;   // 挂起Leonardo,直到您连接串行
  if (!Serial) delay(5000);           //给Leonardo一些时间
  Serial.println("Serial took " + String((millis() - when)) + "ms to start");
  //    tft.reset();                 //硬件复位
  uint16_t ID = tft.readID();
  Serial.print("ID = 0x");
  Serial.println(ID, HEX);
  Serial.print("Ready ok!");
  if (ID == 0xD3D3) ID = 0x9481; //只写扩展
  //    ID = 0x9329;                             // 强制标识
  tft.begin(ID);
}
#if defined(MCUFRIEND_KBV_H_)
uint16_t scrollbuf[320];    // 我最大的屏幕是 320x480
#define READGRAM(x, y, buf, w, h)  tft.readGRAM(x, y, buf, w, h)
#else
uint16_t scrollbuf[320];    // Adafruit 只能处理 240x320
// Adafruit 可以一次读取一个像素块
int16_t  READGRAM(int16_t x, int16_t y, uint16_t *block, int16_t w, int16_t h)
{
  uint16_t *p;
  for (int row = 0; row < h; row++) {
    p = block + row * w;
    for (int col = 0; col < w; col++) {
      *p++ = tft.readPixel(x + col, y + row);
    }
  }
}
#endif
void windowScroll(int16_t x, int16_t y, int16_t wid, int16_t ht, int16_t dx, int16_t dy, uint16_t *buf)
{
  if (dx) for (int16_t row = 0; row < ht; row++) {
      READGRAM(x, y + row, buf, wid, 1);
      tft.setAddrWindow(x, y + row, x + wid - 1, y + row);
      tft.pushColors(buf + dx, wid - dx, 1);
      tft.pushColors(buf + 0, dx, 0);
    }
  if (dy) for (int16_t col = 0; col < wid; col++) {
      READGRAM(x + col, y, buf, 1, ht);
      tft.setAddrWindow(x + col, y, x + col, y + ht - 1);
      tft.pushColors(buf + dy, ht - dy, 1);
      tft.pushColors(buf + 0, dy, 0);
    }
}
void printmsg(int row, const char *msg)
{
  tft.setTextColor(YELLOW, BLACK);
  tft.setCursor(0, row);
  tft.println(msg);
}
void loop(void) {
  uint8_t aspect;
  uint16_t pixel;
  const char *aspectname[] = {
    "PORTRAIT", "LANDSCAPE", "PORTRAIT_REV", "LANDSCAPE_REV"
  };
  const char *colorname[] = { "BLUE", "GREEN", "RED", "GRAY" };
  uint16_t colormask[] = { 0x001F, 0x07E0, 0xF800, 0xFFFF };
  uint16_t dx, rgb, n, wid, ht, msglin;
  tft.setRotation(0);
  runtests();
  delay(2000);
  if (tft.height() > 64) {
    for (uint8_t cnt = 0; cnt < 4; cnt++) {
      aspect = (cnt + 0) & 3;
      tft.setRotation(aspect);
      wid = tft.width();
      ht = tft.height();
      msglin = (ht > 160) ? 200 : 112;
      testText();
      dx = wid / 32;
      for (n = 0; n < 32; n++) {
        rgb = n * 8;
        rgb = tft.color565(rgb, rgb, rgb);
        tft.fillRect(n * dx, 48, dx, 63, rgb & colormask[aspect]);
      }
      tft.drawRect(0, 48 + 63, wid, 1, WHITE);
      tft.setTextSize(2);
      tft.setTextColor(colormask[aspect], BLACK);
      tft.setCursor(0, 72);
      tft.print(colorname[aspect]);
      tft.setTextColor(WHITE);
      tft.println(" COLOR GRADES");
      tft.setTextColor(WHITE, BLACK);
      printmsg(184, aspectname[aspect]);
      delay(1000);
      tft.drawPixel(0, 0, YELLOW);
      pixel = tft.readPixel(0, 0);
      tft.setTextSize((ht > 160) ? 2 : 1); //对于消息
#if defined(MCUFRIEND_KBV_H_)
#if 1
      extern const uint8_t penguin[];
      tft.setAddrWindow(wid - 40 - 40, 20 + 0, wid - 1 - 40, 20 + 39);
      tft.pushColors(penguin, 1600, 1);
#elif 1
      extern const uint8_t wifi_full[];
      tft.setAddrWindow(wid - 40 - 40, 20 + 0, wid - 40 - 40 + 31, 20 + 31);
      tft.pushColors(wifi_full, 1024, 1, true);
#elif 1
      extern const uint8_t icon_40x40[];
      tft.setAddrWindow(wid - 40 - 40, 20 + 0, wid - 1 - 40, 20 + 39);
      tft.pushColors(icon_40x40, 1600, 1);
#endif
      tft.setAddrWindow(0, 0, wid - 1, ht - 1);
      if (aspect & 1) tft.drawRect(wid - 1, 0, 1, ht, WHITE);
      else tft.drawRect(0, ht - 1, wid, 1, WHITE);
      printmsg(msglin, "VERTICAL SCROLL UP");
      uint16_t maxscroll;
      if (tft.getRotation() & 1) maxscroll = wid;
      else maxscroll = ht;
      for (uint16_t i = 1; i <= maxscroll; i++) {
        tft.vertScroll(0, maxscroll, i);
        delay(10);
      }
      delay(1000);
      printmsg(msglin, "VERTICAL SCROLL DN");
      for (uint16_t i = 1; i <= maxscroll; i++) {
        tft.vertScroll(0, maxscroll, 0 - (int16_t)i);
        delay(10);
      }
      tft.vertScroll(0, maxscroll, 0);
      printmsg(msglin, "SCROLL DISABLED   ");
      delay(1000);
      if ((aspect & 1) == 0) { //Portrait
        tft.setTextColor(BLUE, BLACK);
        printmsg(msglin, "ONLY THE COLOR BAND");
        for (uint16_t i = 1; i <= 64; i++) {
          tft.vertScroll(48, 64, i);
          delay(20);
        }
        delay(1000);
      }
#endif
      tft.setTextColor(YELLOW, BLACK);
      if (pixel == YELLOW) {
        printmsg(msglin, "SOFTWARE SCROLL    ");
#if 0
        // 块的对角线卷轴
        for (int16_t i = 45, dx = 2, dy = 1; i > 0; i -= dx) {
          windowScroll(24, 8, 90, 40, dx, dy, scrollbuf);
        }
#else
        // 块的普通水平滚动
        n = (wid > 320) ? 320 : wid;
        for (int16_t i = n, dx = 4, dy = 0; i > 0; i -= dx) {
          windowScroll(0, 200, n, 16, dx, dy, scrollbuf);
        }
#endif
      }
      else if (pixel == CYAN)
        tft.println("readPixel() reads as BGR");
      else if ((pixel & 0xF8F8) == 0xF8F8)
        tft.println("readPixel() should be 24-bit");
      else {
        tft.print("readPixel() reads 0x");
        tft.println(pixel, HEX);
      }
      delay(2000);
    }
  }
  printmsg(msglin, "INVERT DISPLAY ");
  tft.invertDisplay(true);
  delay(1000);
  tft.invertDisplay(false);
}
typedef struct {
  PGM_P msg;
  uint32_t ms;
} TEST;
TEST result[12];
#define RUNTEST(n, str, test) { result[n].msg = PSTR(str); result[n].ms = test; delay(500); }
void runtests(void)
{
  uint8_t i, len = 24, cnt;
  uint32_t total;
  RUNTEST(0, "FillScreen               ", testFillScreen());
  RUNTEST(1, "Text                     ", testText());
  RUNTEST(2, "Lines                    ", testLines(CYAN));
  RUNTEST(3, "Horiz/Vert Lines         ", testFastLines(RED, BLUE));
  RUNTEST(4, "Rectangles (outline)     ", testRects(GREEN));
  RUNTEST(5, "Rectangles (filled)      ", testFilledRects(YELLOW, MAGENTA));
  RUNTEST(6, "Circles (filled)         ", testFilledCircles(10, MAGENTA));
  RUNTEST(7, "Circles (outline)        ", testCircles(10, WHITE));
  RUNTEST(8, "Triangles (outline)      ", testTriangles());
  RUNTEST(9, "Triangles (filled)       ", testFilledTriangles());
  RUNTEST(10, "Rounded rects (outline)  ", testRoundRects());
  RUNTEST(11, "Rounded rects (filled)   ", testFilledRoundRects());
  tft.fillScreen(BLACK);
  tft.setTextColor(GREEN);
  tft.setCursor(0, 0);
  uint16_t wid = tft.width();
  if (wid > 176) {
    tft.setTextSize(2);
#if defined(MCUFRIEND_KBV_H_)
    tft.print("MCUFRIEND ");
#if MCUFRIEND_KBV_H_ != 0
    tft.print(0.01 * MCUFRIEND_KBV_H_, 2);
#else
    tft.print("for");
#endif
    tft.println(" UNO");
#else
    tft.println("Adafruit-Style Tests");
#endif
  } else len = wid / 6 - 8;
  tft.setTextSize(1);
  total = 0;
  for (i = 0; i < 12; i++) {
    PGM_P str = result[i].msg;
    char c;
    if (len > 24) {
      if (i < 10) tft.print(" ");
      tft.print(i);
      tft.print(": ");
    }
    uint8_t cnt = len;
    while ((c = pgm_read_byte(str++)) && cnt--) tft.print(c);
    tft.print(" ");
    tft.println(result[i].ms);
    total += result[i].ms;
  }
  tft.setTextSize(2);
  tft.print("Total:");
  tft.print(0.000001 * total);
  tft.println("sec");
  g_identifier = tft.readID();
  tft.print("ID: 0x");
  tft.println(tft.readID(), HEX);
  //    tft.print("Reg(00):0x");
  //    tft.println(tft.readReg(0x00), HEX);
  tft.print("F_CPU:");
  tft.print(0.000001 * F_CPU);
#if defined(__OPTIMIZE_SIZE__)
  tft.println("MHz -Os");
#else
  tft.println("MHz");
#endif
  delay(1000);
}
//标准 Adafruit 测试。 将调整到屏幕大小
unsigned long testFillScreen() {
  unsigned long start = micros();
  tft.fillScreen(BLACK);
  tft.fillScreen(RED);
  tft.fillScreen(GREEN);
  tft.fillScreen(BLUE);
  tft.fillScreen(BLACK);
  return micros() - start;
}
unsigned long testText() {
  unsigned long start;
  tft.fillScreen(BLACK);
  start = micros();
  tft.setCursor(0, 0);
  tft.setTextColor(WHITE);  tft.setTextSize(1);
  tft.println("Hello World!");
  tft.setTextColor(YELLOW); tft.setTextSize(2);
  tft.println(123.45);
  tft.setTextColor(RED);    tft.setTextSize(3);
  tft.println(0xDEADBEEF, HEX);
  tft.println();
  tft.setTextColor(GREEN);
  tft.setTextSize(5);
  tft.println("Groop");
  tft.setTextSize(2);
  tft.println("I implore thee,");
  tft.setTextSize(1);
  tft.println("my foonting turlingdromes.");
  tft.println("And hooptiously drangle me");
  tft.println("with crinkly bindlewurdles,");
  tft.println("Or I will rend thee");
  tft.println("in the gobberwarts");
  tft.println("with my blurglecruncheon,");
  tft.println("see if I don't!");
  return micros() - start;
}
unsigned long testLines(uint16_t color) {
  unsigned long start, t;
  int           x1, y1, x2, y2,
                w = tft.width(),
                h = tft.height();
  tft.fillScreen(BLACK);
  x1 = y1 = 0;
  y2    = h - 1;
  start = micros();
  for (x2 = 0; x2 < w; x2 += 6) tft.drawLine(x1, y1, x2, y2, color);
  x2    = w - 1;
  for (y2 = 0; y2 < h; y2 += 6) tft.drawLine(x1, y1, x2, y2, color);
  t     = micros() - start; // fillScreen doesn't count against timing
  tft.fillScreen(BLACK);
  x1    = w - 1;
  y1    = 0;
  y2    = h - 1;
  start = micros();
  for (x2 = 0; x2 < w; x2 += 6) tft.drawLine(x1, y1, x2, y2, color);
  x2    = 0;
  for (y2 = 0; y2 < h; y2 += 6) tft.drawLine(x1, y1, x2, y2, color);
  t    += micros() - start;
  tft.fillScreen(BLACK);
  x1    = 0;
  y1    = h - 1;
  y2    = 0;
  start = micros();
  for (x2 = 0; x2 < w; x2 += 6) tft.drawLine(x1, y1, x2, y2, color);
  x2    = w - 1;
  for (y2 = 0; y2 < h; y2 += 6) tft.drawLine(x1, y1, x2, y2, color);
  t    += micros() - start;
  tft.fillScreen(BLACK);
  x1    = w - 1;
  y1    = h - 1;
  y2    = 0;
  start = micros();
  for (x2 = 0; x2 < w; x2 += 6) tft.drawLine(x1, y1, x2, y2, color);
  x2    = 0;
  for (y2 = 0; y2 < h; y2 += 6) tft.drawLine(x1, y1, x2, y2, color);
  return micros() - start;
}
unsigned long testFastLines(uint16_t color1, uint16_t color2) {
  unsigned long start;
  int           x, y, w = tft.width(), h = tft.height();
  tft.fillScreen(BLACK);
  start = micros();
  for (y = 0; y < h; y += 5) tft.drawFastHLine(0, y, w, color1);
  for (x = 0; x < w; x += 5) tft.drawFastVLine(x, 0, h, color2);
  return micros() - start;
}
unsigned long testRects(uint16_t color) {
  unsigned long start;
  int           n, i, i2,
                cx = tft.width()  / 2,
                cy = tft.height() / 2;
  tft.fillScreen(BLACK);
  n     = min(tft.width(), tft.height());
  start = micros();
  for (i = 2; i < n; i += 6) {
    i2 = i / 2;
    tft.drawRect(cx - i2, cy - i2, i, i, color);
  }
  return micros() - start;
}
unsigned long testFilledRects(uint16_t color1, uint16_t color2) {
  unsigned long start, t = 0;
  int           n, i, i2,
                cx = tft.width()  / 2 - 1,
                cy = tft.height() / 2 - 1;
  tft.fillScreen(BLACK);
  n = min(tft.width(), tft.height());
  for (i = n; i > 0; i -= 6) {
    i2    = i / 2;
    start = micros();
    tft.fillRect(cx - i2, cy - i2, i, i, color1);
    t    += micros() - start;
    // Outlines are not included in timing results
    tft.drawRect(cx - i2, cy - i2, i, i, color2);
  }
  return t;
}
unsigned long testFilledCircles(uint8_t radius, uint16_t color) {
  unsigned long start;
  int x, y, w = tft.width(), h = tft.height(), r2 = radius * 2;
  tft.fillScreen(BLACK);
  start = micros();
  for (x = radius; x < w; x += r2) {
    for (y = radius; y < h; y += r2) {
      tft.fillCircle(x, y, radius, color);
    }
  }
  return micros() - start;
}
unsigned long testCircles(uint8_t radius, uint16_t color) {
  unsigned long start;
  int           x, y, r2 = radius * 2,
                      w = tft.width()  + radius,
                      h = tft.height() + radius;
  // 这个屏幕没有被清除——这是
  // 有意且不影响报告时间。
  start = micros();
  for (x = 0; x < w; x += r2) {
    for (y = 0; y < h; y += r2) {
      tft.drawCircle(x, y, radius, color);
    }
  }
  return micros() - start;
}
unsigned long testTriangles() {
  unsigned long start;
  int           n, i, cx = tft.width()  / 2 - 1,
                      cy = tft.height() / 2 - 1;
  tft.fillScreen(BLACK);
  n     = min(cx, cy);
  start = micros();
  for (i = 0; i < n; i += 5) {
    tft.drawTriangle(
      cx    , cy - i, // 峰值
      cx - i, cy + i, // 左下方
      cx + i, cy + i, // 右下角
      tft.color565(0, 0, i));
  }
  return micros() - start;
}
unsigned long testFilledTriangles() {
  unsigned long start, t = 0;
  int           i, cx = tft.width()  / 2 - 1,
                   cy = tft.height() / 2 - 1;
  tft.fillScreen(BLACK);
  start = micros();
  for (i = min(cx, cy); i > 10; i -= 5) {
    start = micros();
    tft.fillTriangle(cx, cy - i, cx - i, cy + i, cx + i, cy + i,
                     tft.color565(0, i, i));
    t += micros() - start;
    tft.drawTriangle(cx, cy - i, cx - i, cy + i, cx + i, cy + i,
                     tft.color565(i, i, 0));
  }
  return t;
}
unsigned long testRoundRects() {
  unsigned long start;
  int           w, i, i2, red, step,
                cx = tft.width()  / 2 - 1,
                cy = tft.height() / 2 - 1;
  tft.fillScreen(BLACK);
  w     = min(tft.width(), tft.height());
  start = micros();
  red = 0;
  step = (256 * 6) / w;
  for (i = 0; i < w; i += 6) {
    i2 = i / 2;
    red += step;
    tft.drawRoundRect(cx - i2, cy - i2, i, i, i / 8, tft.color565(red, 0, 0));
  }
  return micros() - start;
}
unsigned long testFilledRoundRects() {
  unsigned long start;
  int           i, i2, green, step,
                cx = tft.width()  / 2 - 1,
                cy = tft.height() / 2 - 1;
  tft.fillScreen(BLACK);
  start = micros();
  green = 256;
  step = (256 * 6) / min(tft.width(), tft.height());
  for (i = min(tft.width(), tft.height()); i > 20; i -= 6) {
    i2 = i / 2;
    green -= step;
    tft.fillRoundRect(cx - i2, cy - i2, i, i, i / 8, tft.color565(0, green, 0));
  }
  return micros() - start;
}
 
 
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