476 lines
9.7 KiB
C++
476 lines
9.7 KiB
C++
// Resources:
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// [Consul 262.4 Converter] https://deskthority.net/viewtopic.php?t=26908
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// [Consul 262.5 manual in CS] http://www.sapi.cz/prislusenstvi/c262-5.php#odkazp4
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#include <TimerOne.h>
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// pinout config
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const int pinLedOffline = 10; // out
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const int pinLedOnline = 9; // out
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const int pinSpeaker = 8; // out
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const int pinData = 6; // out, host data
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const int pinStatus = 7; // in, host status
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const int clockPin = 5; // out, kbd clock
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const int dataPin = 3; // in, kbd data
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const int outPin = 4; // out, kbd led
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// constant config
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const int slaveClockDivider = 8;
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const int timerDelay = 520 / slaveClockDivider;
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// variables
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volatile int slaveClockStep = 0;
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char m[255];
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volatile int data = 0;
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int test = 0;
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volatile int counter = 0;
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int numbits = 10;
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volatile int typedKey = -1;
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bool hostOnline = false;
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// MODS >>>
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// [1] send debug scancode information to serial port
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bool modConsoleLog = true;
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// <<< MODS
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// ----------
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// KBD Output
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// ----------
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volatile long lastChange = -100000;
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volatile int x = 0;
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volatile int dataWord = 0;
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volatile int dataState = 0;
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volatile int dataDelay = 0;
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volatile int packetDelay = 0;
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volatile int packetTail = 0;
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volatile bool nextKeyReady = false;
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volatile byte nextKey = 0;
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void typeKey(byte key) {
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nextKey = key;
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nextKeyReady = true;
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//Serial.print("Typing key "); Serial.println((int) key);
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}
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void sendKey(byte key) {
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dataWord = key;
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dataState = 8;
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dataDelay = 0;
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packetDelay = 0;
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packetTail = 15;
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typedKey = key;
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//Serial.print("Sending key "); Serial.println((int) key);
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}
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void onHostStatusChange() {
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long timeNow = millis();
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long changeDiff = timeNow - lastChange;
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lastChange = timeNow;
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if (changeDiff >= 10 && nextKeyReady) {
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nextKeyReady = false;
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sendKey(nextKey);
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Timer1.start(); // synchronize with the host
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slaveClockStep = 0;
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}
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}
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void onHostClockCycle(void)
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{
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int dataBit = HIGH;
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if (packetDelay > 0) {
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packetDelay--;
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} else if (dataDelay > 0) {
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dataDelay--;
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dataBit = LOW;
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} else if (dataState > 0) {
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int bitToSend = (dataWord >> (dataState - 1)) & 1;
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dataBit = !bitToSend ? LOW : HIGH;
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dataState--;
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} else if (packetTail > 0) {
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packetTail--;
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dataBit = LOW;
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} else {
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}
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digitalWrite(pinData, dataBit);
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}
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// ---------
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// KBD Input
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// ---------
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const int receivingSteps = 16;
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volatile int clockStep = 0;
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volatile int receivingStep = 0;
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volatile int receivingData = 0;
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volatile int receivingBit = 0;
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void onSlaveClockInterrupt() {
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clockStep = (clockStep + 1) % 2;
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int clockValue = (clockStep % 2) ? HIGH : LOW;
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digitalWrite(clockPin, clockValue);
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int dataBit = digitalRead(dataPin);
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if (clockValue == LOW) {
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if (receivingData == 0 && dataBit == LOW) {
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receivingData = 1;
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receivingStep = 0;
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receivingBit = 0;
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test = 0;
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} else if (receivingData == 1) {
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receivingStep++;
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}
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if (receivingData == 1 && test == 0) {
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test = 1;
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receivingBit += dataBit == HIGH ? 1 : 0;
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if (receivingStep >= receivingSteps) {
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if (counter <= 8) {
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data = data >> 1;
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if (receivingBit > receivingSteps / 2) {
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bitSet(data, 7);
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}
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}
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counter++;
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receivingStep = 0;
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receivingBit = 0;
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if (counter >= numbits) {
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receivingData = 0;
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}
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}
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}
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}
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if (clockValue == HIGH && test == 1) {
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test = 0;
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}
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}
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void setupKeyMapping() {
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m[0] = 0;
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// top row special
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m[63] = 0x12; // ?? Setup
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m[62] = 'j'; // up
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m[61] = 'k'; // down
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m[59] = 'h'; // left
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m[60] = 'l'; // right
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// top numbers row
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m[228] = 0x1B; // ESC
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m[206] = '1';
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m[205] = '2';
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m[204] = '3';
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m[203] = '4';
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m[202] = '5';
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m[201] = '6';
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m[200] = '7';
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m[199] = '8';
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m[198] = '9';
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m[207] = '0';
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m[210] = '-';
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m[161] = '^';
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m[0] = ' '; // Empty cap
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m[247] = 0x08; // Backspace
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m[56] = 0x10; // Break
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// top letter row
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m[246] = '\t';
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m[142] = 'q';
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m[142+32] = 'Q';
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m[136] = 'w';
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m[136+32] = 'W';
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m[154] = 'e';
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m[154+32] = 'E';
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m[141] = 'r';
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m[141+32] = 'R';
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m[139] = 't';
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m[139+32] = 'T';
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m[134] = 'y';
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m[134+32] = 'Y';
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m[138] = 'u';
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m[138+32] = 'U';
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m[150] = 'i';
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m[150+32] = 'I';
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m[144] = 'o';
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m[144+32] = 'O';
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m[143] = 'p';
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m[143+32] = 'P';
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m[191] = '@';
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m[164] = '[';
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m[245] = 0x0A;
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m[128] = 0x7F;
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// middle letter row
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m[158] = 'a';
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m[158+32] = 'A';
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m[140] = 's';
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m[140+32] = 'S';
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m[155] = 'd';
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m[155+32] = 'D';
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m[153] = 'f';
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m[153+32] = 'F';
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m[152] = 'g';
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m[152+32] = 'G';
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m[151] = 'h';
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m[151+32] = 'H';
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m[149] = 'j';
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m[149+32] = 'J';
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m[148] = 'k';
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m[148+32] = 'K';
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m[147] = 'l';
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m[147+32] = 'L';
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m[196] = ';';
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m[196+32] = '+';
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m[197] = ':';
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m[197+32] = '*';
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m[162] = ']';
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m[162+32] = '}';
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m[242] = 0x0D;
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// bottom letter row
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m[58] = 0x11; // No Scroll
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m[133] = 'z';
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m[133+32] = 'Z';
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m[135] = 'x';
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m[135+32] = 'X';
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m[156] = 'c';
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m[156+32] = 'C';
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m[137] = 'v';
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m[137+32] = 'V';
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m[157] = 'b';
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m[157+32] = 'B';
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m[145] = 'n';
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m[145+32] = 'N';
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m[146] = 'm';
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m[146+32] = 'M';
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m[211] = ',';
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m[211+32] = '<';
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m[209] = '.';
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m[209+32] = '>';
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m[208] = '/';
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m[208+32] = '?';
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m[163] = '\\';
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m[163+32] = '|';
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m[78] = 'x'; // Blank cap
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m[77] = 'X'; // Blank cap + shift
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// spacebar
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m[223] = ' '; // Spacebar
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/*/ numpad
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m[] = '';
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m[+32] = '';
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m[] = '';
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m[+32] = '';
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m[] = '';
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m[+32] = '';
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m[] = '';
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m[+32] = '';
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m[] = '';
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m[+32] = '';
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/*
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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m[] = '';
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/**/
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//
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// 208 local ON
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// 209 leave local
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// 210 half/full duplex
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// 211 go home?
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// 212 print Ps junk
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// 213 mem protect
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// 214 disable NAT
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// 217 clear line?
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// 218 shows cursor
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// 219 hides cursor
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// 221 mem prot
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// 223 reset prompt
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// 241 random junk symbols
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// 243 random junk symbols
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// 244 stop junk
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// 248 hides cursor
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// 251 Hard copy
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// 250 Keyb. Inh.
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}
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char translateKeyToChar(int key) {
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if (sizeof(m) <= key) {
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return 0;
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}
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return m[key];
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}
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void printChar(char keyChar) {
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Serial.print("'"); Serial.print(keyChar); Serial.print("' ("); Serial.print(int(keyChar)); Serial.println(")");
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}
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void processKbdByte(int data) {
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int key = data;
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char keyChar = translateKeyToChar(key);
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if (modConsoleLog) {
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Serial.print("Key: <"); Serial.print(int(key)); Serial.print("> ");
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Serial.print("Char: "); printChar(keyChar);
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}
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#ifdef KEYBOARD
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Keyboard.press(keyChar);
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delay(10);
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Keyboard.release(keyChar);
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#endif
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typeKey(keyChar);
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}
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// ----------------------
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// Input and Output Merge
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// ----------------------
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void onTimerInterrupt()
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{
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onSlaveClockInterrupt();
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if (slaveClockStep == 0) {
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onHostClockCycle();
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}
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slaveClockStep = (slaveClockStep + 1) % slaveClockDivider;
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}
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// --------------
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// User Interface
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// --------------
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void updateOnlineStatus()
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{
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long timeNow = millis();
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hostOnline = (lastChange > timeNow) || ((timeNow - lastChange) < 10000);
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digitalWrite(pinLedOffline, hostOnline ? LOW : HIGH);
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digitalWrite(pinLedOnline, hostOnline ? HIGH : LOW);
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}
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// ----
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// Main
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// ----
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void setup(void)
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{
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Serial.begin(9600);
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setupKeyMapping();
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pinMode(pinLedOffline, OUTPUT);
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pinMode(pinLedOnline, OUTPUT);
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pinMode(pinSpeaker, OUTPUT);
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pinMode(pinData, OUTPUT);
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pinMode(dataPin, INPUT);
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pinMode(outPin, OUTPUT);
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pinMode(clockPin, OUTPUT);
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pinMode(pinStatus, INPUT_PULLUP);
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digitalWrite(pinLedOffline, HIGH);
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digitalWrite(pinLedOnline, HIGH);
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digitalWrite(pinData, HIGH);
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digitalWrite(outPin, LOW);
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attachInterrupt(digitalPinToInterrupt(pinStatus), onHostStatusChange, CHANGE);
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Timer1.initialize(timerDelay);
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Timer1.attachInterrupt(onTimerInterrupt);
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delay(500);
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tone(pinSpeaker, 650, 200);
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digitalWrite(pinLedOffline, LOW);
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digitalWrite(pinLedOnline, HIGH);
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delay(200);
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tone(pinSpeaker, 500, 200);
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digitalWrite(pinLedOffline, HIGH);
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digitalWrite(pinLedOnline, LOW);
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delay(200);
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digitalWrite(pinLedOffline, LOW);
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digitalWrite(pinLedOnline, LOW);
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delay(500);
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updateOnlineStatus();
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tone(pinSpeaker, 440, 200);
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delay(200);
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Serial.println("Keyboard ready");
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}
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int qwe = 0;
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void loop(void)
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{
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// type key from serial
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if (!nextKeyReady && Serial.available() > 0) {
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long key = Serial.parseInt(SKIP_ALL);
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if (key != 0) {
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typeKey(key);
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}
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}
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/**/
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// type key from keyboard
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if (counter >= numbits) {
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processKbdByte(data);
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data = B0;
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counter = 0;
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}
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/**/
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/*/ auto-type test
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delay(2000);
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int k = 128 + qwe;
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typeKey(k);
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qwe = (qwe + 1) % 128;
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Serial.print("QWE "); Serial.println((int)k);
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if (qwe % 5 == 0) delay(2000);
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/**/
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updateOnlineStatus();
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if (nextKeyReady && !hostOnline) { // skip sending key without a host (used for USB)
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nextKeyReady = false;
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typedKey = nextKey;
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}
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if (!nextKeyReady && typedKey != -1) {
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tone(pinSpeaker, 200 + typedKey, 100);
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typedKey = -1;
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}
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delay(5);
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}
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