FabGL
ESP32 Display Controller and Graphics Library
VGA/SimpleTextTerminalOut/SimpleTextTerminalOut.ino

Simple terminal text-only mode - output only

/*
Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - www.fabgl.com
Copyright (c) 2019-2020 Fabrizio Di Vittorio.
All rights reserved.
This file is part of FabGL Library.
FabGL is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
FabGL is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FabGL. If not, see <http://www.gnu.org/licenses/>.
*/
#include "fabgl.h"
#include "vtanimations.h"
fabgl::VGATextController DisplayController;
fabgl::Terminal Terminal;
void setup()
{
//Serial.begin(115200); delay(500); Serial.write("\n\n\n"); // DEBUG ONLY
DisplayController.begin();
DisplayController.setResolution();
Terminal.begin(&DisplayController);
//Terminal.setLogStream(Serial); // DEBUG ONLY
Terminal.enableCursor(true);
}
void slowPrintf(const char * format, ...)
{
va_list ap;
va_start(ap, format);
int size = vsnprintf(nullptr, 0, format, ap) + 1;
if (size > 0) {
va_end(ap);
va_start(ap, format);
char buf[size + 1];
vsnprintf(buf, size, format, ap);
for (int i = 0; i < size; ++i) {
Terminal.write(buf[i]);
delay(25);
}
}
va_end(ap);
}
void demo1()
{
Terminal.write("\e[40;92m"); // background: black, foreground: green
Terminal.write("\e[2J"); // clear screen
Terminal.write("\e[1;1H"); // move cursor to 1,1
slowPrintf("* * * * W E L C O M E T O F a b G L * * * *\r\n");
slowPrintf("2019-2020 by Fabrizio Di Vittorio - www.fabgl.com\r\n");
slowPrintf("===============================================\r\n\n");
slowPrintf("Text only VGA display controller demo\r\n\n");
slowPrintf("Current settings\r\n");
slowPrintf("Screen Size : %d x %d\r\n", DisplayController.getScreenWidth(), DisplayController.getScreenHeight());
slowPrintf("Terminal Size : %d x %d\r\n", Terminal.getColumns(), Terminal.getRows());
slowPrintf("Free Memory : %d bytes\r\n\n", heap_caps_get_free_size(MALLOC_CAP_32BIT));
}
void demo2()
{
Terminal.write("\e[40;92m"); // background: black, foreground: green
slowPrintf("16 colors supported\r\n");
slowPrintf("ANSI colors:\r\n");
// foregrounds
Terminal.write("\e[31mRED\t"); delay(500);
Terminal.write("\e[32mGREEN\t"); delay(500);
Terminal.write("\e[33mYELLOW\t"); delay(500);
Terminal.write("\e[34mBLUE\t"); delay(500);
Terminal.write("\e[35mMAGENTA\t"); delay(500);
Terminal.write("\e[36mCYAN\t"); delay(500);
Terminal.write("\e[37mWHITE\r\n"); delay(500);
Terminal.write("\e[90mHBLACK\t"); delay(500);
Terminal.write("\e[91mHRED\t"); delay(500);
Terminal.write("\e[92mHGREEN\t"); delay(500);
Terminal.write("\e[93mHYELLOW\t"); delay(500);
Terminal.write("\e[94mHBLUE\t"); delay(500);
Terminal.write("\e[95mHMAGENTA\t"); delay(500);
Terminal.write("\e[96mHCYAN\t"); delay(500);
Terminal.write("\e[97mHWHITE\r\n"); delay(500);
// backgrounds
Terminal.write("\e[40mBLACK\t"); delay(500);
Terminal.write("\e[41mRED\e[40m\t"); delay(500);
Terminal.write("\e[42mGREEN\e[40m\t"); delay(500);
Terminal.write("\e[43mYELLOW\e[40m\t"); delay(500);
Terminal.write("\e[44mBLUE\e[40m\t"); delay(500);
Terminal.write("\e[45mMAGENTA\e[40m\t"); delay(500);
Terminal.write("\e[46mCYAN\e[40m\t"); delay(500);
Terminal.write("\e[47mWHITE\e[40m\r\n"); delay(500);
Terminal.write("\e[100mHBLACK\e[40m\t"); delay(500);
Terminal.write("\e[101mHRED\e[40m\t"); delay(500);
Terminal.write("\e[102mHGREEN\e[40m\t"); delay(500);
Terminal.write("\e[103mHYELLOW\e[40m\t"); delay(500);
Terminal.write("\e[104mHBLUE\e[40m\t"); delay(500);
Terminal.write("\e[105mHMAGENTA\e[40m\t"); delay(500);
Terminal.write("\e[106mHCYAN\e[40m\r\n"); delay(500);
}
void demo3()
{
Terminal.write("\e[40;92m"); // background: black, foreground: green
slowPrintf("\nSupported styles:\r\n");
slowPrintf("\e[0mNormal\r\n");
slowPrintf("\e[1mBold\e[0m\r\n");
slowPrintf("\e[4mUnderlined\e[0m\r\n");
slowPrintf("\e[5mBlink\e[0m\r\n");
slowPrintf("\e[7mInverse\e[0m\r\n");
slowPrintf("\e[1;4mBoldUnderlined\e[0m\r\n");
slowPrintf("\e[1;4;5mBoldUnderlinedBlinking\e[0m\r\n");
slowPrintf("\e[1;4;5;7mBoldUnderlinedBlinkingInverse\e[0m\r\n");
}
void demo5()
{
Terminal.write("\e[40;93m"); // background: black, foreground: yellow
Terminal.write("\e[2J"); // clear screen
slowPrintf("\e[10;56HFast Rendering");
slowPrintf("\e[12;50HThis is a VT/ANSI animation");
Terminal.write("\e[20h"); // automatic new line on
Terminal.write("\e[92m"); // light-green
Terminal.enableCursor(false);
for (int j = 0; j < 4; ++j) {
for (int i = 0; i < sizeof(vt_animation); ++i) {
Terminal.write(vt_animation[i]);
if (vt_animation[i] == 0x1B && vt_animation[i + 1] == 0x5B && vt_animation[i + 2] == 0x48)
delay(120); // pause 100ms every frame
}
}
Terminal.enableCursor(true);
Terminal.write("\e[20l"); // automatic new line off
}
void loop()
{
delay(1000);
demo1();
delay(4000);
demo2();
delay(4000);
demo3();
delay(4000);
demo5();
delay(4000);
}