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CIRKJOY.ino
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CIRKJOY.ino
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/*
C64keyboard - Commodore Keyboard library
Copyright (c) 2019 Hartland PC LLC
Written by Robert VanHazinga
Modified by Jarkko Sonninen 2020,2022
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <avr/wdt.h>
#include "C64keyboard.hpp"
#include "mapping.h"
#include "irkey.h"
// IR Receiver (TSOP4838)
//const int IR_RECEIVE_PIN = A5;
const int JOY_UP_PIN = A0;
const int JOY_DOWN_PIN = A1;
const int JOY_LEFT_PIN = A2;
const int JOY_RIGHT_PIN = A3;
const int JOY_BUTTON_PIN = A4;
// C64 Restore key
const int NMI_PIN = 2;
//PS2 communication pins
//const int PS2_DATA_PIN= A0; // Data pin for PS2 keyboard
//const int PS2_IRQ_PIN = 2; // Interrupt (clk) pin for PS2 keyboard
//IRrecv irrecv(IR_RECEIVE_PIN);
C64keyboard ckey;
static uint16_t mapKey(uint32_t irData);
static void handleButtons(uint32_t k);
static uint8_t handleJoyMode(uint32_t k);
static void handleJoystick(uint32_t k);
static void debugIRCode(uint32_t data);
static uint32_t joyTimeout;
static uint8_t joyStatus;
static uint8_t joyMoveLimit = 16;
static uint8_t keyboardJoyMode;
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
pinMode(JOY_UP_PIN, INPUT_PULLUP);
pinMode(JOY_DOWN_PIN, INPUT_PULLUP);
pinMode(JOY_LEFT_PIN, INPUT_PULLUP);
pinMode(JOY_RIGHT_PIN, INPUT_PULLUP);
pinMode(JOY_BUTTON_PIN, INPUT_PULLUP);
digitalWrite (JOY_RIGHT_PIN, HIGH);
digitalWrite (JOY_LEFT_PIN, HIGH);
digitalWrite (JOY_UP_PIN, HIGH);
digitalWrite (JOY_DOWN_PIN, HIGH);
digitalWrite (JOY_BUTTON_PIN, HIGH);
IR_setup();
ckey.debug = false;
ckey.begin(NMI_PIN);
Serial.begin( 115200 );
if (ckey.debug) {
Serial.println("C64 IR keyboard");
Serial.println(F("Build date " __DATE__));
}
}
void loop() {
wdt_enable(WDTO_1S); // enable the watchdog
uint32_t irData = read_IR();
if (irData) {
digitalWrite(LED_BUILTIN, HIGH);
if (ckey.debug) {
debugIRCode(irData);
}
if (IR_GET_KEYBOARD(irData)) {
if (!IR_GET_RELEASE(irData)) {
switch (IR_GET_CODE(irData)) {
case IR_KC_VOL_DN:
joyMoveLimit = 8;
break;
case IR_KC_VOL_UP:
joyMoveLimit = 16;
break;
case IR_KC_MUTE:
joyMoveLimit = 24;
break;
case IR_KC_SLEEP:
keyboardJoyMode = 1;
break;
case IR_KC_HELP:
ckey.debug = 1;
Serial.println("C64 IR keyboard");
Serial.println(F("Build date " __DATE__));
break;
case IR_KC_CLOSE:
case IR_KC_POWER:
//if ((ck & 0xff) == CK_RESET) {
handleButtons(0);
handleJoystick(0);
keyboardJoyMode = 0;
ckey.debug = false;
break;
}
}
if (!keyboardJoyMode || !handleJoyMode(irData)) {
// Normal key processing
uint16_t ck = mapKey(irData);
ckey.c64key(ck);
}
} else {
handleButtons(irData);
handleJoystick(irData);
}
if (ckey.debug) {
for (uint32_t t = 0x10; t; t >>= 1) {
Serial.write(joyStatus & t ? '1' : '0');
}
Serial.println();
}
}
if (joyTimeout && (long)(joyTimeout - millis()) < 0) {
handleJoystick(0);
}
int c = Serial.read();
if (c >= 32) {
// FIXME. needs mapping
Serial.print("Serial: 0x");
Serial.println(c, HEX);
ckey.c64key(c | FLAG_KEYDOWN);
delay(200);
ckey.c64key(c);
}
digitalWrite(LED_BUILTIN, LOW);
wdt_reset();
}
#define SET_TIMEOUT() joyTimeout= millis() + 200
#define CLEAR_TIMEOUT() joyTimeout= 0;
// value==1 means button pushed
static inline void setPin_(int pin, int value) {
if (value) {
pinMode(pin, OUTPUT);
digitalWrite(pin, LOW);
} else {
#define EXTENAL_PULLUP 1
#if EXTENAL_PULLUP
pinMode(pin, INPUT_PULLUP);
#else
pinMode(pin, OUTPUT);
digitalWrite(pin, HIGH);
#endif
}
}
static uint8_t handleJoyMode(uint32_t irData) {
uint8_t kc = IR_GET_CODE(irData);
uint8_t keyDown = !IR_GET_RELEASE(irData);
switch (kc) {
case IR_KC_UP_ARROW:
case IR_KC_W:
setPin_(JOY_UP_PIN, keyDown);
joyStatus &= ~1;
joyStatus |= keyDown << 0;
return 1;
case IR_KC_DN_ARROW:
case IR_KC_S:
setPin_(JOY_DOWN_PIN, keyDown);
joyStatus &= ~2;
joyStatus |= keyDown << 1;
return 1;
case IR_KC_L_ARROW:
case IR_KC_A:
setPin_(JOY_LEFT_PIN, keyDown);
joyStatus &= ~4;
joyStatus |= keyDown << 2;
return 1;
case IR_KC_R_ARROW:
case IR_KC_D:
setPin_(JOY_RIGHT_PIN, keyDown);
joyStatus &= ~8;
joyStatus |= keyDown << 3;
return 1;
case IR_KC_SPACE:
case IR_KC_L_SHIFT:
case IR_KC_R_SHIFT:
case IR_KC_L_CTRL:
setPin_(JOY_BUTTON_PIN, keyDown);
joyStatus &= ~0x10;
joyStatus |= keyDown << 4;
return 1;
}
return 0;
}
static void handleButtons(uint32_t k) {
int button = !!(IR_GET_BUTTON1(k) || IR_GET_BUTTON2(k));
setPin_(JOY_BUTTON_PIN, button);
joyStatus &= 0xf;
joyStatus |= button << 4;
}
static void handleJoystick(uint32_t k) {
int8_t x = IR_GET_JOY_X(k);
int8_t y = IR_GET_JOY_Y(k);
CLEAR_TIMEOUT();
joyStatus &= 0xf0;
if (y >= joyMoveLimit) {
setPin_(JOY_UP_PIN, 1);
setPin_(JOY_DOWN_PIN, 0);
SET_TIMEOUT();
joyStatus |= 1;
joyStatus &= ~2;
} else if (y <= -joyMoveLimit) {
setPin_(JOY_UP_PIN, 0);
setPin_(JOY_DOWN_PIN, 1);
joyStatus |= 2;
joyStatus &= ~1;
SET_TIMEOUT();
} else {
setPin_(JOY_UP_PIN, 0);
setPin_(JOY_DOWN_PIN, 0);
joyStatus &= ~3;
}
if (x <= -joyMoveLimit) {
setPin_(JOY_LEFT_PIN, 1);
setPin_(JOY_RIGHT_PIN, 0);
joyStatus |= 4;
joyStatus &= ~8;
SET_TIMEOUT();
} else if (x >= joyMoveLimit) {
setPin_(JOY_LEFT_PIN, 0);
setPin_(JOY_RIGHT_PIN, 1);
joyStatus |= 8;
joyStatus &= ~4;
SET_TIMEOUT();
} else {
setPin_(JOY_LEFT_PIN, 0);
setPin_(JOY_RIGHT_PIN, 0);
joyStatus &= ~0x0c;
}
}
static uint16_t mapKey(uint32_t irData) {
uint8_t kc = IR_GET_CODE(irData);
uint16_t c = CK_IGNORE_KEYCODE;
int len = sizeof(C64Keymap_main) / sizeof(C64Keymap_main[0]);
for (int i = 0; i < len; i++) {
uint8_t irKey = pgm_read_byte(&C64Keymap_main[i].irKey);
uint8_t ckmKey = pgm_read_byte(&C64Keymap_main[i].ckmKey);
uint8_t flags = pgm_read_byte(&C64Keymap_main[i].flags);
if (irKey == kc) {
if (IR_GET_SHIFT(irData) && (flags & IR_SHIFT)) {
c = ckmKey;
if (flags & CKM_SHIFT) {
c |= FLAG_AUTOSHIFT;
}
break;
} else if (!IR_GET_SHIFT(irData) && (flags & IR_NO_SHIFT)) {
c = ckmKey;
if (flags & CKM_NO_SHIFT) {
c |= FLAG_AUTOSHIFT;
}
break;
}
}
}
if (!IR_GET_RELEASE(irData)) {
c |= FLAG_KEYDOWN;
}
return c;
}
static void debugIRCode(uint32_t data) {
Serial.print("IR: 0x");
Serial.print(data, HEX);
if (IR_GET_KEYBOARD(data)) {
Serial.print(" key: 0x");
Serial.print(IR_GET_CODE(data), HEX);
Serial.print(" '");
Serial.print(key2sym(IR_GET_CODE(data)));
Serial.print("' ");
Serial.print("+KEY");
if (IR_GET_RELEASE(data)) {
Serial.print("+RELEASE");
}
if (IR_GET_REPEAT(data)) {
Serial.print("+REPEAT");
}
if (IR_GET_SHIFT(data)) {
Serial.print("+SHIFT");
}
if (IR_GET_ALT(data)) {
Serial.print("+ALT");
}
if (IR_GET_CTRL(data)) {
Serial.print("+CTRL");
}
if (IR_GET_GUI(data)) {
Serial.print("+GUI");
}
} else {
Serial.print(" joy ");
Serial.print("x:");
Serial.print(IR_GET_JOY_X(data), DEC);
Serial.print(" y:");
Serial.print(IR_GET_JOY_Y(data), DEC);
Serial.print(" ");
if (IR_GET_BUTTON1(data)) {
Serial.print("+BUTTON1");
}
if (IR_GET_BUTTON2(data)) {
Serial.print("+BUTTON2");
}
}
Serial.println();
}