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186 lines (167 loc) · 6.96 KB
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#include "SerialKeyboard.h"
#include "configuration.h"
#include <Throttle.h>
SerialKeyboard *globalSerialKeyboard = nullptr;
#ifdef INPUTBROKER_SERIAL_TYPE
#if INPUTBROKER_SERIAL_TYPE == 1 // It's a Chatter
// 3 SHIFT level (lower case, upper case, numbers), up to 4 repeated presses, button number
unsigned char KeyMap[3][4][10] = {{{'.', 'a', 'd', 'g', 'j', 'm', 'p', 't', 'w', ' '},
{',', 'b', 'e', 'h', 'k', 'n', 'q', 'u', 'x', ' '},
{'?', 'c', 'f', 'i', 'l', 'o', 'r', 'v', 'y', ' '},
{'1', '2', '3', '4', '5', '6', 's', '8', 'z', ' '}}, // low case
{{'!', 'A', 'D', 'G', 'J', 'M', 'P', 'T', 'W', ' '},
{'+', 'B', 'E', 'H', 'K', 'N', 'Q', 'U', 'X', ' '},
{'-', 'C', 'F', 'I', 'L', 'O', 'R', 'V', 'Y', ' '},
{'1', '2', '3', '4', '5', '6', 'S', '8', 'Z', ' '}}, // upper case
{{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'},
{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'},
{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'},
{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'}}}; // numbers
#endif
SerialKeyboard::SerialKeyboard(const char *name) : concurrency::OSThread(name)
{
this->_originName = name;
globalSerialKeyboard = this;
}
void SerialKeyboard::erase()
{
InputEvent e = {};
e.inputEvent = INPUT_BROKER_BACK;
e.kbchar = 0x08;
e.source = this->_originName;
this->notifyObservers(&e);
}
int32_t SerialKeyboard::runOnce()
{
if (!INPUTBROKER_SERIAL_TYPE) {
// Input device is not requested.
return disable();
}
if (firstTime) {
// This is the first time the OSThread library has called this function, so do port setup
firstTime = 0;
pinMode(KB_LOAD, OUTPUT);
pinMode(KB_CLK, OUTPUT);
pinMode(KB_DATA, INPUT);
digitalWrite(KB_LOAD, HIGH);
digitalWrite(KB_CLK, LOW);
prevKeys = 0b1111111111111111;
LOG_DEBUG("Serial Keyboard setup");
}
if (INPUTBROKER_SERIAL_TYPE == 1) { // Chatter V1.0 & V2.0 keypads
// scan for keypresses
// Write pulse to load pin
digitalWrite(KB_LOAD, LOW);
delayMicroseconds(5);
digitalWrite(KB_LOAD, HIGH);
delayMicroseconds(5);
// Get data from 74HC165
byte shiftRegister1 = shiftIn(KB_DATA, KB_CLK, LSBFIRST);
byte shiftRegister2 = shiftIn(KB_DATA, KB_CLK, LSBFIRST);
keys = (shiftRegister1 << 8) + shiftRegister2;
// Print to serial monitor
// Serial.print (shiftRegister1, BIN);
// Serial.print ("X");
// Serial.println (shiftRegister2, BIN);
if (!Throttle::isWithinTimespanMs(lastPressTime, 500)) {
quickPress = 0;
}
if (keys < prevKeys) { // a new key has been pressed (and not released), doesn't works for multiple presses at once but
// shouldn't be a limitation
InputEvent e = {};
e.inputEvent = INPUT_BROKER_NONE;
e.source = this->_originName;
// SELECT OR SEND OR CANCEL EVENT
if (!(shiftRegister2 & (1 << 3))) {
if (shift > 0) {
e.inputEvent = INPUT_BROKER_ANYKEY; // REQUIRED
e.kbchar = 0x09; // TAB
shift = 0; // reset shift after TAB
} else {
e.inputEvent = INPUT_BROKER_LEFT;
}
} else if (!(shiftRegister2 & (1 << 2))) {
if (shift > 0) {
e.inputEvent = INPUT_BROKER_ANYKEY; // REQUIRED
e.kbchar = 0x09; // TAB
shift = 0; // reset shift after TAB
} else {
e.inputEvent = INPUT_BROKER_RIGHT;
}
e.kbchar = 0;
} else if (!(shiftRegister2 & (1 << 1))) {
e.inputEvent = INPUT_BROKER_SELECT;
} else if (!(shiftRegister2 & (1 << 0))) {
e.inputEvent = INPUT_BROKER_CANCEL;
}
// TEXT INPUT EVENT
else if (!(shiftRegister1 & (1 << 4))) {
keyPressed = 0;
} else if (!(shiftRegister1 & (1 << 3))) {
keyPressed = 1;
} else if (!(shiftRegister2 & (1 << 4))) {
keyPressed = 2;
} else if (!(shiftRegister1 & (1 << 5))) {
keyPressed = 3;
} else if (!(shiftRegister1 & (1 << 2))) {
keyPressed = 4;
} else if (!(shiftRegister2 & (1 << 5))) {
keyPressed = 5;
} else if (!(shiftRegister1 & (1 << 6))) {
keyPressed = 6;
} else if (!(shiftRegister1 & (1 << 1))) {
keyPressed = 7;
} else if (!(shiftRegister2 & (1 << 6))) {
keyPressed = 8;
} else if (!(shiftRegister1 & (1 << 0))) {
keyPressed = 9;
}
// BACKSPACE or TAB
else if (!(shiftRegister1 & (1 << 7))) {
if (shift == 0 || shift == 2) { // BACKSPACE
e.inputEvent = INPUT_BROKER_BACK;
e.kbchar = 0x08;
} else { // shift = 1 => TAB
e.inputEvent = INPUT_BROKER_ANYKEY;
e.kbchar = 0x09;
}
}
// SHIFT
else if (!(shiftRegister2 & (1 << 7))) {
keyPressed = 10;
}
if (keyPressed < 11) {
if (keyPressed == lastKeyPressed && millis() - lastPressTime < 500) {
quickPress += 1;
if (quickPress > 3) {
quickPress = 0;
}
}
if (keyPressed != lastKeyPressed) {
quickPress = 0;
}
if (keyPressed < 10) { // if it's a letter
if (keyPressed == lastKeyPressed && millis() - lastPressTime < 500) {
erase();
}
e.inputEvent = INPUT_BROKER_ANYKEY;
e.kbchar = char(KeyMap[shift][quickPress][keyPressed]);
} else { // then it's shift
shift += 1;
if (shift > 2) {
shift = 0;
}
}
lastPressTime = millis();
lastKeyPressed = keyPressed;
keyPressed = 13;
}
if (e.inputEvent != INPUT_BROKER_NONE) {
this->notifyObservers(&e);
}
}
prevKeys = keys;
}
return 50;
}
#endif // INPUTBROKER_SERIAL_TYPE