FabGL
ESP32 Display Controller and Graphics Library
Others/KeyboardVirtualKeys/KeyboardVirtualKeys.ino

PS/2 keyboard virtual keys

/*
Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - <http://www.fabgl.com>
Copyright (c) 2019-2021 Fabrizio Di Vittorio.
All rights reserved.
* Please contact fdivitto2013@gmail.com if you need a commercial license.
* This library and related software is available under GPL v3.
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"
fabgl::VGA16Controller DisplayController;
fabgl::Terminal Terminal;
fabgl::PS2Controller PS2Controller;
void xprintf(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);
Serial.write(buf);
Terminal.write(buf);
}
va_end(ap);
}
void printHelp()
{
xprintf("\e[93m\n\nPS/2 Keyboard Virtual Keys\r\n");
xprintf("Chip Revision: %d Chip Frequency: %d MHz\r\n", ESP.getChipRevision(), ESP.getCpuFreqMHz());
printInfo();
xprintf("Commands:\r\n");
xprintf(" 1 = US Layout 2 = UK Layout 3 = DE Layout\r\n");
xprintf(" 4 = IT Layout 5 = ES Layout 6 = FR Layout\r\n");
xprintf(" 7 = BE Layout\r\n");
xprintf(" r = Reset\r\n");
xprintf(" q = Scancode set 1 w = Scancode set 2\r\n");
xprintf(" l = Test LEDs\r\n");
xprintf("Various:\r\n");
xprintf(" h = Print This help\r\n\n");
xprintf("Use Serial Monitor to issue commands\r\n\n");
}
void printInfo()
{
auto keyboard = PS2Controller.keyboard();
if (keyboard->isKeyboardAvailable()) {
xprintf("Device Id = ");
switch (keyboard->identify()) {
case PS2DeviceType::OldATKeyboard:
xprintf("\"Old AT Keyboard\"");
break;
case PS2DeviceType::MouseStandard:
xprintf("\"Standard Mouse\"");
break;
case PS2DeviceType::MouseWithScrollWheel:
xprintf("\"Mouse with scroll wheel\"");
break;
case PS2DeviceType::Mouse5Buttons:
xprintf("\"5 Buttons Mouse\"");
break;
case PS2DeviceType::MF2KeyboardWithTranslation:
xprintf("\"MF2 Keyboard with translation\"");
break;
case PS2DeviceType::M2Keyboard:
xprintf("\"MF2 keyboard\"");
break;
default:
xprintf("\"Unknown\"");
break;
}
xprintf(" Keyboard Layout: \"%s\"\r\n", keyboard->getLayout()->name);
} else
xprintf("Keyboard Error!\r\n");
}
void setup()
{
Serial.begin(115200);
delay(500); // avoid garbage into the UART
Serial.write("\r\n\nReset\r\n");
PS2Controller.begin(PS2Preset::KeyboardPort0);
DisplayController.begin();
DisplayController.setResolution(VGA_640x480_60Hz);
Terminal.begin(&DisplayController);
Terminal.enableCursor(true);
//PS2Controller.keyboard()->setTypematicRateAndDelay(33, 500);
printHelp();
}
void loop()
{
auto keyboard = PS2Controller.keyboard();
//static fabgl::VirtualKey lastvk = fabgl::VK_NONE; // avoid to repeat last vk
if (Serial.available() > 0) {
char c = Serial.read();
switch (c) {
case 'h':
printHelp();
break;
case '1':
keyboard->setLayout(&fabgl::USLayout);
printInfo();
break;
case '2':
keyboard->setLayout(&fabgl::UKLayout);
printInfo();
break;
case '3':
keyboard->setLayout(&fabgl::GermanLayout);
printInfo();
break;
case '4':
keyboard->setLayout(&fabgl::ItalianLayout);
printInfo();
break;
case '5':
keyboard->setLayout(&fabgl::SpanishLayout);
printInfo();
break;
case '6':
keyboard->setLayout(&fabgl::FrenchLayout);
printInfo();
break;
case '7':
keyboard->setLayout(&fabgl::BelgianLayout);
printInfo();
break;
case 'r':
keyboard->reset();
printInfo();
break;
case 'l':
for (int i = 0; i < 8; ++i) {
keyboard->setLEDs(i & 1, i & 2, i & 4);
delay(1000);
}
delay(2000);
if (keyboard->setLEDs(0, 0, 0))
xprintf("OK\r\n");
break;
case 'q':
keyboard->setScancodeSet(1);
xprintf("Scancode Set = %d\r\n", keyboard->scancodeSet());
break;
case 'w':
keyboard->setScancodeSet(2);
xprintf("Scancode Set = %d\r\n", keyboard->scancodeSet());
break;
}
}
if (keyboard->virtualKeyAvailable()) {
// ascii mode (show ASCIIl, VirtualKeys and scancodes)
VirtualKeyItem item;
if (keyboard->getNextVirtualKey(&item)) {
xprintf("%s: ", keyboard->virtualKeyToString(item.vk));
xprintf("\tASCII = 0x%02X\t", item.ASCII);
if (item.ASCII >= ' ')
xprintf("'%c'", item.ASCII);
xprintf("\t%s", item.down ? "DN" : "UP");
xprintf("\t[");
for (int i = 0; i < 8 && item.scancode[i] != 0; ++i)
xprintf("%02X ", item.scancode[i]);
xprintf("]");
xprintf("\r\n");
}
}
}