FabGL
ESP32 VGA Controller and Graphics Library
SimpleTerminalOut/SimpleTerminalOut.ino

Simple terminal - output only

/*
Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - www.fabgl.com
Copyright (c) 2019 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"
void setup()
{
Serial.begin(115200); delay(500); Serial.write("\n\n\n"); // DEBUG ONLY
// 8 colors
//VGAController.begin(GPIO_NUM_22, GPIO_NUM_21, GPIO_NUM_19, GPIO_NUM_18, GPIO_NUM_5);
// 64 colors
VGAController.begin(GPIO_NUM_22, GPIO_NUM_21, GPIO_NUM_19, GPIO_NUM_18, GPIO_NUM_5, GPIO_NUM_4, GPIO_NUM_23, GPIO_NUM_15);
VGAController.setResolution(VGA_640x350_70HzAlt1, 640, 350);
//VGAController.setResolution(VGA_640x240_60Hz); // select to have more free memory
// this speed-up display but may generate flickering
VGAController.enableBackgroundPrimitiveExecution(false);
Terminal.begin();
Terminal.setLogStream(Serial); // DEBUG ONLY
Terminal.enableCursor(true);
}
void slowPrintf(const char * format, ...)
{
va_list ap;
va_start(ap, format);
int size = vsnprintf(NULL, 0, format, ap) + 1;
if (size > 0) {
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;32m"); // 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 by Fabrizio Di Vittorio - www.fabgl.com\r\n");
slowPrintf("===============================================\r\n\n");
slowPrintf("This is a VGA Controller, PS2 Keyboard Controller, Graphics Library, Game Engine and ANSI/VT Terminal for the ESP32\r\n\n");
slowPrintf("Current settings\r\n");
slowPrintf("Screen Size : %d x %d\r\n", VGAController.getScreenWidth(), VGAController.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_8BIT));
}
void demo2()
{
Terminal.write("\e[40;32m"); // background: black, foreground: green
slowPrintf("8 or 64 colors supported (depends by GPIOs used)\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;32m"); // background: black, foreground: green
slowPrintf("\nSupported styles:\r\n");
slowPrintf("\e[0mNormal\r\n");
slowPrintf("\e[1mBold\e[0m\r\n");
slowPrintf("\e[3mItalic\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;3mBoldItalic\e[0m\r\n");
slowPrintf("\e[1;3;4mBoldItalicUnderlined\e[0m\r\n");
slowPrintf("\e[1;3;4;5mBoldItalicUnderlinedBlinking\e[0m\r\n");
slowPrintf("\e[1;3;4;5;7mBoldItalicUnderlinedBlinkingInverse\e[0m\r\n");
slowPrintf("\e#6Double Width Line\r\n");
slowPrintf("\e#6\e#3Double Height Line\r\n"); // top half
slowPrintf("\e#6\e#4Double Height Line\r\n"); // bottom half
}
void demo4()
{
Terminal.write("\e[40;32m"); // background: black, foreground: green
slowPrintf("\nMixed text and graphics:\r\n");
slowPrintf("Points...\r\n");
for (int i = 0; i < 500; ++i) {
Canvas.setPenColor(random(4), random(4), random(4));
Canvas.setPixel(random(640), random(350));
delay(15);
}
delay(500);
slowPrintf("\e[40;32mLines...\r\n");
for (int i = 0; i < 50; ++i) {
Canvas.setPenColor(random(4), random(4), random(4));
Canvas.drawLine(random(640), random(350), random(640), random(350));
delay(50);
}
delay(500);
slowPrintf("\e[40;32mRectangles...\r\n");
for (int i = 0; i < 50; ++i) {
Canvas.setPenColor(random(4), random(4), random(4));
Canvas.drawRectangle(random(640), random(350), random(640), random(350));
delay(50);
}
delay(500);
slowPrintf("\e[40;32mEllipses...\r\n");
for (int i = 0; i < 50; ++i) {
Canvas.setPenColor(random(4), random(4), random(4));
Canvas.drawEllipse(random(640), random(350), random(640), random(350));
delay(50);
}
for (int i = 0; i < 30; ++i) {
Terminal.write("\e[40;32mScrolling...\r\n");
delay(250);
}
}
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);
demo4();
delay(4000);
demo5();
delay(4000);
}