initial commit
This commit is contained in:
Sascha Nitsch
parent
1f065d2375
commit
30e3d7652f
2 changed files with 311 additions and 1 deletions
2
LICENSE
2
LICENSE
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@ -1,6 +1,6 @@
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MIT License
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Copyright (c) <year> <copyright holders>
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Copyright (c) 2021 GrumyDeveloper https://contentnation.net/en/grumpydevelop/
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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310
ps2keyboardfilter.ino
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310
ps2keyboardfilter.ino
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#include <EEPROM.h>
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#include "ps2_Keyboard.h"
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#include "ps2_NullDiagnostics.h"
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#include "ps2_UsbTranslator.h"
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#include "HID-Project.h"
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#define DEBUG 1
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// with serial.print...
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#ifdef DEBUG
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#define SP(a) Serial.print(a);
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#define SPLN(a) Serial.println(a);
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#else
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#define SP(a) ;
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#define SPLN(a) ;
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#endif
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static ps2::NullDiagnostics nd;
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static ps2::UsbTranslator<ps2::NullDiagnostics> keyMapping(nd);
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static ps2::Keyboard<4, 2, 16, ps2::NullDiagnostics> ps2Keyboard(nd);
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static ps2::UsbKeyboardLeds ledValueLastSentToPs2 = ps2::UsbKeyboardLeds::none;
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uint8_t activeFilter = 255;
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class Filter {
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private:
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uint8_t m_keys[8] = {0};
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uint8_t m_number;
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uint8_t m_numKeys;
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public:
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Filter(uint8_t number) {
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m_number = number;
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m_numKeys = 0;
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}
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bool loadFromEEPROM() {
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uint8_t offset = m_number * 10; // 10 bytes per filter config
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m_numKeys = EEPROM.read(offset); // number of keys
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if (m_numKeys > 8 || m_numKeys == 0) {
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m_numKeys = 0;
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return false;
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}
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uint8_t chksum = 0;
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for (uint8_t i = 0; i < m_numKeys; ++i) {
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uint8_t key = EEPROM.read(offset + i + 1);
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m_keys[i] = key;
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chksum += key;
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}
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// validate checksum
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if (chksum != EEPROM.read(offset + m_numKeys + 1)) {
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SP(m_number);
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SPLN(F(" checksum failed"));
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m_numKeys = 0;
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return false;
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}
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SP(m_number);
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SP(F(" loaded "));
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SP(m_numKeys);
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SPLN(F(" keys"));
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return true;
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}
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void clear() {
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for (uint8_t i = 0; i < m_numKeys; ++i) {
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m_keys[i] = 0;
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}
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m_numKeys = 0;
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}
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void addKey(uint8_t key) {
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for (uint8_t i = 0; i < m_numKeys; ++i) {
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if (m_keys[i] == key) {
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return;
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}
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}
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if (m_numKeys < 7) {
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m_keys[m_numKeys++] = key;
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}
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}
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bool writeToEEPROM() {
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uint8_t offset = m_number * 10; // 10 bytes per filter config
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EEPROM.write(offset, m_numKeys); // number of keys
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uint8_t chksum = 0;
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for (uint8_t i = 0; i < m_numKeys; ++i) {
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EEPROM.write(offset + i + 1, m_keys[i]);
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chksum += m_keys[i];
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}
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// save checksum
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EEPROM.write(offset + m_numKeys + 1, chksum);
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SP(m_number);
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SP(F(" saved "));
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SP(m_numKeys);
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SPLN(F(" keys"));
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return true;
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}
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bool isFiltered(uint8_t key) {
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for (uint8_t i = 0; i < m_numKeys; ++i) {
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if (m_keys[i] == key) {
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return true;
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}
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}
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return false;
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}
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};
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#define NUM_FILTERS 12
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Filter* filters[NUM_FILTERS] = {0};
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enum States {
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NONE = 0,
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PROGRAMMING_SHIFT,
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PROGRAMMING_SCROLL,
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PROGRAMMING_SELECT,
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PROGRAMMING_ADD,
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PROGRAMMING_DONE,
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APPLY_SHIFT,
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APPLY_SCROLL,
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APPLY_SELECT,
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APPLY_DONE
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} currentState = NONE;
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uint32_t pressedTime = 0;
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uint8_t programFilter = 255;
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// the setup function runs once when you press reset or power the board
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void setup() {
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ps2Keyboard.begin();
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BootKeyboard.begin();
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#ifdef DEBUG
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delay(2000);
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Serial.begin(115200);
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SPLN(F("ready"));
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#endif
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for (uint8_t i = 0; i < NUM_FILTERS; ++i) {
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filters[i] = new Filter(i);
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filters[i]->loadFromEEPROM();
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}
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filters[11]->clear();
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filters[11]->addKey(KEY_E);
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activeFilter = 11;
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}
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#define BLINK_OFF 0
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#define BLINK_VERY_SLOW 2000
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#define BLINK_SLOW 1000
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#define BLINK_MEDIUM 500
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#define BLINK_FAST 250
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uint16_t blinkTimer = 0;
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void loop() {
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uint32_t now = millis();
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ps2::UsbKeyboardLeds newLedState = (ps2::UsbKeyboardLeds)BootKeyboard.getLeds();
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if (blinkTimer != BLINK_OFF) {
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uint8_t diff = (now - pressedTime) / blinkTimer;
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if (diff & 1) newLedState = (ps2::UsbKeyboardLeds)((uint8_t)newLedState ^ (uint8_t)ps2::UsbKeyboardLeds::scrollLock);
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}
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if (newLedState != ledValueLastSentToPs2)
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{
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ps2Keyboard.sendLedStatus(keyMapping.translateLeds(newLedState));
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ledValueLastSentToPs2 = newLedState;
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}
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ps2::KeyboardOutput scanCode = ps2Keyboard.readScanCode();
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if (scanCode != ps2::KeyboardOutput::none && scanCode != ps2::KeyboardOutput::garbled) {
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ps2::UsbKeyAction action = keyMapping.translatePs2Keycode(scanCode);
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KeyboardKeycode hidCode = (KeyboardKeycode)action.hidCode;
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switch(currentState) {
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case NONE:
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if (action.gesture == ps2::UsbKeyAction::KeyDown) {
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if (hidCode == KeyboardKeycode::KEY_LEFT_SHIFT) {
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currentState = PROGRAMMING_SHIFT;
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SPLN(F("to PROGRAMMING_SHIFT"));
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} else if (hidCode == KeyboardKeycode::KEY_RIGHT_SHIFT) {
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currentState = APPLY_SHIFT;
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SPLN(F("to APPLY_SHIFT"));
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}
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}
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break;
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case PROGRAMMING_SHIFT:
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if (action.gesture == ps2::UsbKeyAction::KeyDown && hidCode == KeyboardKeycode::KEY_SCROLL_LOCK) {
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currentState = PROGRAMMING_SCROLL;
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blinkTimer = BLINK_SLOW;
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pressedTime = now;
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SPLN(F("to PROGRAMMING_SCROLL"));
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} else if (action.gesture != ps2::UsbKeyAction::KeyDown || hidCode != KeyboardKeycode::KEY_LEFT_SHIFT) {
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currentState = NONE;
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SPLN(F("PROGRAMMING_SHIFT_to NONE"));
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}
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break;
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case PROGRAMMING_SCROLL:
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// to work around a library quirk insted of
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// if (action.gesture == ps2::UsbKeyAction::KeyUp && hidCode == KeyboardKeycode::KEY_SCROLL_LOCK && (now - pressedTime) > 5000) {
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if (action.gesture == ps2::UsbKeyAction::None && hidCode == 0 && (now - pressedTime) > 5000) {
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blinkTimer = BLINK_MEDIUM;
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currentState = PROGRAMMING_SELECT;
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pressedTime = now;
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SPLN(F("to PROGRAMMING_SELECT"));
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} else if (action.gesture == ps2::UsbKeyAction::KeyUp || (hidCode != KEY_LEFT_SHIFT && hidCode != KEY_SCROLL_LOCK)) {
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currentState = NONE;
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blinkTimer = BLINK_OFF;
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SPLN(F("PROGRAMMING_SCROLL to NONE"));
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}
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break;
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case PROGRAMMING_SELECT:
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if (action.gesture == ps2::UsbKeyAction::KeyDown) {
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if(hidCode >= KeyboardKeycode::KEY_F1 && hidCode <= KeyboardKeycode::KEY_F12) {
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programFilter = hidCode - KeyboardKeycode::KEY_F1;
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filters[programFilter]->clear();
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blinkTimer = BLINK_FAST;
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SP(F("set filter to "));
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SPLN(programFilter);
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currentState = PROGRAMMING_ADD;
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SPLN(F("to PROGRAMMING_ADD"));
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return; // do not send
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} else {
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currentState = NONE;
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programFilter = 255;
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blinkTimer = BLINK_OFF;
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SP(F("PROGRAMMING_SELECT != F to NONE"));
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SPLN(hidCode);
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}
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return;
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}
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break;
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case PROGRAMMING_ADD:
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if (action.gesture == ps2::UsbKeyAction::KeyDown && hidCode == KeyboardKeycode::KEY_SCROLL_LOCK) {
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SPLN(F("to PROGRAMMING_DONE"));
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currentState = PROGRAMMING_DONE;
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}
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if (action.gesture == ps2::UsbKeyAction::KeyUp && hidCode != (KeyboardKeycode::KEY_F1 + programFilter)) {
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SP(F("add key "));
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SPLN(hidCode);
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filters[programFilter]->addKey(hidCode);
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}
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return;
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case PROGRAMMING_DONE:
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if (action.gesture == ps2::UsbKeyAction::KeyUp && hidCode == KeyboardKeycode::KEY_SCROLL_LOCK) {
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SPLN(F("to NONE"));
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filters[programFilter]->writeToEEPROM();
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currentState = NONE;
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blinkTimer = BLINK_OFF;
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}
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return;
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case APPLY_SHIFT:
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if (action.gesture == ps2::UsbKeyAction::KeyDown && hidCode == KeyboardKeycode::KEY_SCROLL_LOCK) {
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currentState = APPLY_SCROLL;
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blinkTimer = BLINK_SLOW;
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pressedTime = now;
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SPLN(F("to APPLY_SCROLL"));
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} else if (action.gesture != ps2::UsbKeyAction::KeyDown || hidCode != KeyboardKeycode::KEY_RIGHT_SHIFT) {
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currentState = NONE;
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SPLN(F("APPLY_SHIFT_to NONE"));
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}
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break;
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case APPLY_SCROLL:
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// to work around a library quirk insted of
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// if (action.gesture == ps2::UsbKeyAction::KeyUp && hidCode == KeyboardKeycode::KEY_SCROLL_LOCK && (now - pressedTime) > 1000) {
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if (action.gesture == ps2::UsbKeyAction::None && hidCode == 0 && (now - pressedTime) > 1000) {
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blinkTimer = BLINK_MEDIUM;
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currentState = APPLY_SELECT;
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pressedTime = now;
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SPLN(F("to APPLY_SELECT"));
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} else if (action.gesture == ps2::UsbKeyAction::KeyUp || (hidCode != KEY_RIGHT_SHIFT && hidCode != KEY_SCROLL_LOCK)) {
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currentState = NONE;
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blinkTimer = BLINK_OFF;
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SPLN(F("APPLY_SCROLL to NONE"));
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}
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break;
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case APPLY_SELECT:
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if (action.gesture == ps2::UsbKeyAction::KeyDown) {
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if(hidCode == KeyboardKeycode::KEY_ESC || (hidCode >= KeyboardKeycode::KEY_F1 && hidCode <= KeyboardKeycode::KEY_F12)) {
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activeFilter = hidCode == KeyboardKeycode::KEY_ESC ? 255 : hidCode - KeyboardKeycode::KEY_F1;
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SP(F("set filter to "));
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SPLN(activeFilter);
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currentState = APPLY_DONE;
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SPLN(F("to APPLY_DONE"));
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return; // do not send
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} else {
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currentState = NONE;
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blinkTimer = BLINK_OFF;
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SP(F("APPLY_SELECT != F to NONE"));
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SPLN(hidCode);
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}
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return;
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}
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break;
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case APPLY_DONE:
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if (action.gesture == ps2::UsbKeyAction::KeyUp) {
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if(hidCode == KeyboardKeycode::KEY_ESC) {
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blinkTimer = BLINK_OFF;
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currentState = NONE;
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SPLN(F("to NONE"));
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}
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if (hidCode >= KeyboardKeycode::KEY_F1 && hidCode <= KeyboardKeycode::KEY_F12) {
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blinkTimer = BLINK_VERY_SLOW;
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currentState = NONE;
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SPLN(F("to NONE"));
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}
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}
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return;
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}
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if (activeFilter != 255) {
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if (filters[activeFilter]->isFiltered(hidCode)) {
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action.gesture = ps2::UsbKeyAction::None;
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}
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}
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switch (action.gesture) {
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case ps2::UsbKeyAction::KeyDown:
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BootKeyboard.press(hidCode);
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break;
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case ps2::UsbKeyAction::KeyUp:
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BootKeyboard.release(hidCode);
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break;
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}
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}
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}
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