Tiny ML微型机器学习开发板 + 显示字符例程

TLLED · 发表于 2021-7-15 11:00:38

通过开发板的例程，来了解显示屏。
通过上篇开发环境的搭建https://www.cirmall.com/bbs/thread-207473-1-1.html，开发工具包含开发板一些例程，下面通过一些例程来学习。

一、打开例程

1.1、打开示例，选择开发板下LCD的例程，选择字体的例程。

1.2、项目文件

1.3、程序源码

/*
Example for TFT_eSPI library
Created by Bodmer 31/12/16
This example draws all fonts (as used by the Adafruit_GFX library) onto the
screen. These fonts are called the GFX Free Fonts (GFXFF) in this library.
The fonts are referenced by a short name, see the Free_Fonts.h file
attached to this sketch.
Other True Type fonts could be converted using the utility within the
"fontconvert" folder inside the library. This converted has also been
copied from the Adafruit_GFX library.
Since these fonts are a recent addition Adafruit do not have a tutorial
available yet on how to use the fontconvert utility. Linux users will
no doubt figure it out! In the meantime there are 48 font files to use
in sizes from 9 point to 24 point, and in normal, bold, and italic or
oblique styles.
This example sketch uses both the print class and drawString() functions
to plot text to the screen.
Make sure LOAD_GFXFF is defined in the User_Setup.h file within the
library folder.
--------------------------- NOTE ----------------------------------------
The free font encoding format does not lend itself easily to plotting
the background without flicker. For values that changes on screen it is
better to use Fonts 1- 8 which are encoded specifically for rapid
drawing with background.
-------------------------------------------------------------------------
#########################################################################
###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
###### TO SELECT YOUR DISPLAY TYPE AND ENABLE FONTS ######
#########################################################################
*/
#define TEXT "aA MWyz~12" // Text that will be printed on screen in any font
#include "Free_Fonts.h" // Include the header file attached to this sketch
#include "SPI.h"
#include "TFT_eSPI.h"
// Use hardware SPI
TFT_eSPI tft = TFT_eSPI();
unsigned long drawTime = 0;
void setup(void) {
tft.begin();
tft.setRotation(1);
}
void loop() {
// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Show all 48 fonts in centre of screen ( x,y coordinate 160,120)
// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Where font sizes increase the screen is not cleared as the larger fonts overwrite
// the smaller one with the background colour.
// Set text datum to middle centre
tft.setTextDatum(MC_DATUM);
// Set text colour to orange with black background
tft.setTextColor(TFT_WHITE, TFT_BLACK);
tft.fillScreen(TFT_BLACK); // Clear screen
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF1, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF1); // Select the font
tft.drawString(TEXT, 160, 120, GFXFF);// Print the string name of the font
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF2, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF2);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF3, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF3);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF4, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF4);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF5, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF5);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF6, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF6);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF7, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF7);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF8, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF8);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF9, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF9);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF10, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF10);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF11, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF11);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF12, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF12);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF13, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF13);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF14, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF14);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF15, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF15);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF16, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF16);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF17, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF17);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF18, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF18);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF19, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF19);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF20, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF20);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF21, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF21);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF22, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF22);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF23, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF23);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF24, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF24);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF25, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF25);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF26, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF26);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF27, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF27);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF28, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF28);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF29, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF29);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF30, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF30);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF31, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF31);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF32, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF32);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF33, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF33);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF34, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF34);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF35, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF35);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF36, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF36);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF37, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF37);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF38, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF38);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF39, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF39);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF40, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF40);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF41, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF41);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF42, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF42);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF43, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF43);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF44, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF44);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF45, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF45);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF46, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF46);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF47, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF47);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
//tft.fillScreen(TFT_BLACK);
tft.setFreeFont(FF18); // Select the font
tft.drawString(sFF48, 160, 60, GFXFF);// Print the string name of the font
tft.setFreeFont(FF48);
tft.drawString(TEXT, 160, 120, GFXFF);
delay(1000);
}
// There follows a crude way of flagging that this example sketch needs fonts which
// have not been enbabled in the User_Setup.h file inside the TFT_HX8357 library.
//
// These lines produce errors during compile time if settings in User_Setup are not correct
//
// The error will be "does not name a type" but ignore this and read the text between ''
// it will indicate which font or feature needs to be enabled
//
// Either delete all the following lines if you do not want warnings, or change the lines
// to suit your sketch modifications.
#ifndef LOAD_GLCD
//ERROR_Please_enable_LOAD_GLCD_in_User_Setup
#endif
#ifndef LOAD_GFXFF
ERROR_Please_enable_LOAD_GFXFF_in_User_Setup!
#endif

复制代码

二、编译上传程序

三、运行结果

Tiny ML微型机器学习开发板 + 显示字符例程

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