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Kaleidoscope/ArduinoKeyboard.ino

369 lines
12 KiB

// Do not remove the include below
#include "ArduinoKeyboard.h"
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// Copyright 2013 Jesse Vincent <jesse@fsck.com>
// All Rights Reserved. (To be licensed under an opensource license
// before the release of the keyboard.io model 01
/**
* TODO:
add mouse acceleration/deceleration
add mouse inertia
add series-of-character macros
add series of keystroke macros
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use a lower-level USB API
*
**/
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#include <stdio.h>
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#include <math.h>
#include <EEPROM.h>
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//#define DEBUG_SERIAL false
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#define COLS 14
#define ROWS 5
#define LAYERS 6
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static const byte colPins[COLS] = { 16, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
static const byte rowPins[ROWS] = { A2, A3, A4, A5, 15 };
byte matrixState[ROWS][COLS];
// if we're sticking to boot protocol, these could all be 6 + mods
// but *mumble*
//
#define KEYS_HELD_BUFFER 12
byte charsBeingReported[KEYS_HELD_BUFFER]; // A bit vector for the 256 keys we might conceivably be holding down
byte charsReportedLastTime[KEYS_HELD_BUFFER]; // A bit vector for the 256 keys we might conceivably be holding down
long reporting_counter = 0;
byte current_layer = 0;
double mouseActiveForCycles = 0;
float carriedOverX =0;
float carriedOverY =0;
#include "keymaps.h"
#define EEPROM_LAYER_LOCATION 0
void save_current_layer(byte layer) {
Serial.print("telling eeprom thinks we're on layer ");
Serial.println(layer);
EEPROM.write(EEPROM_LAYER_LOCATION, layer);
}
byte load_current_layer() {
byte layer = EEPROM.read(EEPROM_LAYER_LOCATION);
Serial.print("eeprom thinks we're on layer ");
Serial.println(layer);
if (layer >= LAYERS ) {
return 0; // undefined positions get saved as 255
}
return layer;
}
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void release_keys_not_being_pressed()
{
// we use charsReportedLastTime to figure out what we might not be holding anymore and can now release. this is destructive to charsReportedLastTime
for (byte i=0; i<KEYS_HELD_BUFFER; i++) {
// for each key we were holding as of the end of the last cycle
// see if we're still holding it
// if we're not, call an explicit Release
if (charsReportedLastTime[i] != 0x00) {
// if there _was_ a character in this slot, go check the
// currently held characters
for (byte j=0; j<KEYS_HELD_BUFFER; j++) {
if (charsReportedLastTime[i] == charsBeingReported[j]) {
// if's still held, we don't need to do anything.
charsReportedLastTime[i] = 0x00;
break;
}
}
}
}
for (byte i=0; i<KEYS_HELD_BUFFER; i++) {
if (charsReportedLastTime[i] != 0x00) {
Keyboard.release(charsReportedLastTime[i]);
}
}
}
void record_key_being_pressed(byte character)
{
for (byte i=0; i<KEYS_HELD_BUFFER; i++) {
// todo - deal with overflowing the 12 key buffer here
if (charsBeingReported[i] == 0x00) {
charsBeingReported[i] = character;
break;
}
}
}
void reset_matrix()
{
for (byte col = 0; col < COLS; col++) {
for (byte row = 0; row < ROWS; row++) {
matrixState[row][col] <<= 1;
}
}
for (byte i=0; i<KEYS_HELD_BUFFER; i++) {
charsReportedLastTime[i] = charsBeingReported[i];
charsBeingReported[i] = 0x00;
}
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}
double mouse_accel (double cycles)
{
double accel = atan((cycles/50)-5);
accel += 1.5707963267944; // we want the whole s curve, not just the bit that's usually above the x and y axes;
accel = accel *0.85;
if (accel<0.25) {
accel =0.25;
}
return accel;
}
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void handle_mouse_movement( char x, char y)
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{
if (x!=0 || y!=0) {
mouseActiveForCycles++;
double accel = (double) mouse_accel(mouseActiveForCycles);
float moveX=0;
float moveY=0;
if (x>0) {
moveX = (x*accel) + carriedOverX;
carriedOverX = moveX - floor(moveX);
} else if(x<0) {
moveX = (x*accel) - carriedOverX;
carriedOverX = ceil(moveX) - moveX;
}
if (y >0) {
moveY = (y*accel) + carriedOverY;
carriedOverY = moveY - floor(moveY);
} else if (y<0) {
moveY = (y*accel) - carriedOverY;
carriedOverY = ceil(moveY) - moveY;
}
#ifdef DEBUG_SERIAL
Serial.println();
Serial.print("cycles: ");
Serial.println(mouseActiveForCycles);
Serial.print("Accel: ");
Serial.print(accel);
Serial.print(" moveX is ");
Serial.print(moveX);
Serial.print(" moveY is ");
Serial.print(moveY);
Serial.print(" carriedoverx is ");
Serial.print(carriedOverX);
Serial.print(" carriedOverY is ");
Serial.println(carriedOverY);
#endif
Mouse.move(moveX,moveY, 0);
} else {
mouseActiveForCycles=0;
}
}
void send_key_events(byte layer)
{
//for every newly pressed button, figure out what logical key it is and send a key down event
// for every newly released button, figure out what logical key it is and send a key up event
// TODO:switch to sending raw HID packets
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// really, these are signed small ints
char x = 0;
char y = 0;
for (byte row = 0; row < ROWS; row++) {
for (byte col = 0; col < COLS; col++) {
byte switchState = matrixState[row][col];
Key mappedKey = keymaps[layer][row][col];
if (mappedKey.flags & MOUSE_KEY ) {
if (key_is_pressed(switchState)) {
if (mappedKey.rawKey & MOUSE_UP) {
y-=1;
}
if (mappedKey.rawKey & MOUSE_DN) {
y+= 1;
}
if (mappedKey.rawKey & MOUSE_L) {
x-= 1;
}
if (mappedKey.rawKey & MOUSE_R) {
x+= 1 ;
}
}
} else if (mappedKey.flags & SYNTHETIC_KEY) {
if(mappedKey.flags & IS_MACRO) {
if (key_toggled_on (switchState)) {
if (mappedKey.rawKey == 1) {
Keyboard.print("Keyboard.IO keyboard driver v0.00");
}
}
}
else if (mappedKey.rawKey == KEY_MOUSE_BTN_L || mappedKey.rawKey == KEY_MOUSE_BTN_M|| mappedKey.rawKey == KEY_MOUSE_BTN_R) {
if (key_toggled_on (switchState)) {
Mouse.press(mappedKey.rawKey);
} else if (key_is_pressed(switchState)) {
} else if (Mouse.isPressed(mappedKey.rawKey) ) {
Mouse.release(mappedKey.rawKey);
}
}
} else {
if (key_is_pressed(switchState)) {
record_key_being_pressed(mappedKey.rawKey);
if (key_toggled_on (switchState)) {
Keyboard.press(mappedKey.rawKey);
}
} else if (key_toggled_off (switchState)) {
Keyboard.release(mappedKey.rawKey);
}
}
}
}
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handle_mouse_movement(x,y);
release_keys_not_being_pressed();
}
void setup_matrix()
{
//set up the row pins as outputs
for (byte row = 0; row < ROWS; row++) {
pinMode(rowPins[row], OUTPUT);
digitalWrite(rowPins[row], HIGH);
}
for (byte col = 0; col < COLS; col++) {
pinMode(colPins[col], INPUT);
digitalWrite(colPins[col], HIGH);
//drive em high by default s it seems to be more reliable than driving em low
}
//blank out the matrix.
for (byte col = 0; col < COLS; col++) {
for (byte row = 0; row < ROWS; row++) {
matrixState[row][col] = 0;
}
}
}
void scan_matrix()
{
byte active_layer = current_layer;
//scan the Keyboard matrix looking for connections
for (byte row = 0; row < ROWS; row++) {
digitalWrite(rowPins[row], LOW);
for (byte col = 0; col < COLS; col++) {
//If we see an electrical connection on I->J,
if (digitalRead(colPins[col])) {
matrixState[row][col] |= 0; // noop. just here for clarity
} else {
matrixState[row][col] |= 1; // noop. just here for clarity
}
// while we're inspecting the electrical matrix, we look
// to see if the Key being held is a firmware level
// metakey, so we can act on it, lest we only discover
// that we should be looking at a seconary Keymap halfway through the matrix scan
if (! (keymaps[active_layer][row][col].flags ^ ( MOMENTARY | SWITCH_TO_LAYER))) { // this logic sucks. there is a better way TODO this
if (key_is_pressed(matrixState[row][col])) {
active_layer = keymaps[current_layer][row][col].rawKey;
} }
else if (! (keymaps[active_layer][row][col].flags ^ ( SWITCH_TO_LAYER))) { // switch layer and stay there
if (key_toggled_on(matrixState[row][col])) {
current_layer = active_layer = keymaps[current_layer][row][col].rawKey;
save_current_layer(current_layer);
}
}
}
digitalWrite(rowPins[row], HIGH);
}
send_key_events(active_layer);
}
void report_matrix()
{
#ifdef DEBUG_SERIAL
if (reporting_counter++ %100 == 0 ) {
for (byte row = 0; row < ROWS; row++) {
for (byte col = 0; col < COLS; col++) {
Serial.print(matrixState[row][col],HEX);
Serial.print(", ");
}
Serial.println("");
}
Serial.println("");
}
#endif
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}
void report(byte row, byte col, boolean value)
{
#ifdef DEBUG_SERIAL
Serial.print("Detected a change on ");
Serial.print(col);
Serial.print(" ");
Serial.print(row);
Serial.print(" to ");
Serial.print(value);
Serial.println(".");
#endif
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}
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void setup()
{
Keyboard.begin();
Mouse.begin();
#ifdef DEBUG_SERIAL
Serial.begin(115200);
#endif
setup_matrix();
current_layer = load_current_layer();
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}
void loop()
{
scan_matrix();
// report_matrix();
reset_matrix();
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}