1
0
mirror of https://github.com/mcgurk/Arduino-USB-HID-RetroJoystickAdapter synced 2024-12-22 15:38:49 -05:00
Arduino-USB-HID-RetroJoysti.../C64_1351_Mouse/c64_usb_mouse-debug.ino
2017-08-09 00:55:14 +03:00

269 lines
6.7 KiB
C++

#define USBHOST
#ifdef USBHOST
#include <hidboot.h>
#include <usbhub.h>
#endif
#define POTSENSE 4 //ICP1 (Arduino Pro Micro: pin4, Arduino Uno: pin8)
#define POTX 9 ///< X-line, also OC1A
#define POTY 10 ///< Y-line, also OC1B
#define LBTN 5 ///< Joystick FIRE switch
#define RBTN 6 ///< Joystick UP switch
//#define DEBUG
int16_t dx=0;
int16_t dy=0;
uint8_t buttons=0;
uint8_t update = 0;
#ifdef USBHOST
class MouseRptParser : public MouseReportParser {
protected:
void OnMouseMove(MOUSEINFO *mi);
void OnLeftButtonUp(MOUSEINFO *mi);
void OnLeftButtonDown(MOUSEINFO *mi);
void OnRightButtonUp(MOUSEINFO *mi);
void OnRightButtonDown(MOUSEINFO *mi);
void OnMiddleButtonUp(MOUSEINFO *mi);
void OnMiddleButtonDown(MOUSEINFO *mi);
};
void MouseRptParser::OnMouseMove(MOUSEINFO *mi) {
#ifdef DEBUG
Serial.print("dx=");
Serial.print(mi->dX, DEC);
Serial.print(" dy=");
Serial.println(mi->dY, DEC);
#endif
dx=mi->dX;
dy=mi->dY;
update = 1;
};
void MouseRptParser::OnLeftButtonUp(MOUSEINFO *mi) {
#ifdef DEBUG
Serial.println("L Butt Up");
#endif
buttons &= ~1;
update = 1;
};
void MouseRptParser::OnLeftButtonDown(MOUSEINFO *mi) {
#ifdef DEBUG
Serial.println("L Butt Dn");
#endif
buttons |= 1;
update = 1;
};
void MouseRptParser::OnRightButtonUp(MOUSEINFO *mi) {
#ifdef DEBUG
Serial.println("R Butt Up");
#endif
buttons &= ~2;
update = 1;
};
void MouseRptParser::OnRightButtonDown(MOUSEINFO *mi) {
#ifdef DEBUG
Serial.println("R Butt Dn");
#endif
buttons |= 2;
update = 1;
};
void MouseRptParser::OnMiddleButtonUp(MOUSEINFO *mi) {
#ifdef DEBUG
Serial.println("M Butt Up");
#endif
};
void MouseRptParser::OnMiddleButtonDown(MOUSEINFO *mi) {
#ifdef DEBUG
Serial.println("M Butt Dn");
#endif
};
USB Usb;
USBHub Hub(&Usb);
HIDBoot<USB_HID_PROTOCOL_MOUSE> HidMouse(&Usb);
MouseRptParser Prs;
#endif
static uint8_t potmouse_xcounter; ///< x axis counter
static uint8_t potmouse_ycounter; ///< y axis counter
static volatile uint16_t ocr1a_load; ///< precalculated OCR1A value (YPOT)
static volatile uint16_t ocr1b_load; ///< precalculated OCR1B value (XPOT)
void setup() {
#ifdef DEBUG
Serial.begin(115200);
delay(200);
Serial.println("Start");
Serial.flush();
#endif
#ifdef USBHOST
if (Usb.Init() == -1) {
#ifdef DEBUG
Serial.println("OSC did not start.");
#endif
}
delay(200);
HidMouse.SetReportParser(0, &Prs);
#endif
#ifdef DEBUG
Serial.flush();
delay(200);
#endif
pinMode(LBTN, INPUT); pinMode(RBTN, INPUT);
pinMode(POTX, OUTPUT); pinMode(POTY, OUTPUT);
digitalWrite(POTX, HIGH); digitalWrite(POTY, HIGH);
pinMode(POTSENSE, INPUT); // pullup off, hi-biased by OC1A
potmouse_movt(0,0,0);
startTimers();
#ifndef USBHOST
TIMSK0 = 0;
#endif
}
void loop() {
#ifdef USBHOST
Usb.Task();
if (update) {
potmouse_movt(dx, dy, buttons);
update = 0;
}
delayMicroseconds(200);
#endif
#ifndef USBHOST
potmouse_movt(0, 0, buttons);
#endif
}
volatile uint8_t counter = 0;
volatile uint8_t upd = 0;
void potmouse_movt(int16_t dx, int16_t dy, uint8_t button) {
uint16_t a, b;
#ifndef USBHOST
if (upd) {
potmouse_xcounter++;
potmouse_ycounter++;
upd = 0;
}
#endif
potmouse_xcounter = (potmouse_xcounter + (dx/2)) & 0177; // modulo 128
potmouse_ycounter = (potmouse_ycounter - (dy/2)) & 0177;
//for testing
//potmouse_xcounter = (millis()>>6) & 077; // modulo 64
//potmouse_ycounter = (millis()>>6) & 077;
(button & 001) ? pinMode(LBTN, OUTPUT) : pinMode(LBTN, INPUT);
(button & 002) ? pinMode(RBTN, OUTPUT) : pinMode(RBTN, INPUT);
// scale should be 2x here, but for this particular chip, 66 counts work better where
// 64 counds should be. so 66/64=100/96 and times two
//a = 320*2 + ((uint32_t)potmouse_xcounter)*200/fix;
//b = 320*2 + ((uint32_t)potmouse_ycounter)*200/fix;
//a = 320*200/fix + potmouse_xcounter*2;
//b = 320*200/fix + potmouse_ycounter*2;
a = 320*2 + potmouse_xcounter*2;
b = 320*2 + potmouse_ycounter*2;
ocr1a_load = a;
ocr1b_load = b;
}
inline void startTimers() {
#ifdef DEBUG
Serial.println("startTimers"); Serial.flush();
#endif
cli();
// Prepare TIMER1
//TCCR1A = 0;
// ICIE1: Timer/Counter Input Capture Interrupt Enable, ISR(TIMER1_CAPT_vect)
// TOIE1: Timer/Counter Overflow Interrupt Enable
TIMSK1 = _BV(ICIE1); // ICIE1: Timer/Counter1, Input Capture Interrupt Enable
// Start timer1, Input Capture setup
// ICNC1: Input Capture Noise Canceller (Bit 7 of register TCCR1B)
// ICES1: Input Capture Edge Select (Bit 6 of register TCCR1B) 0 = FALLING, 1 = RISING
// CS12, CS11, CS10: Set prescaler (CS11 TIMER1: F_CPU/8)
TCCR1B = _BV(ICNC1) | _BV(CS11);
//TCCR1B = _BV(CS11);
TIFR1 = 0xff; // Clear all pending TIMER1 interrupt flags
sei();
}
ISR(TIMER1_CAPT_vect) {
// Now we little after start of SID reading process
// SID trigger pulse timer value is in ICR1
uint16_t a = ICR1;
#ifdef DEBUG
Serial.println("TIMER1_CAPT_vect:");
#endif
#ifndef USBHOST
counter++;
counter &= 63;
if (counter == 0) upd = 1;
#endif
// clear OC1A/OC1B (9 and 10 to LOW):
// 1. set output compare to clear OC1A/OC1B ("10" in table 37 on page 97)
TCCR1A = _BV(COM1A1) | _BV(COM1B1); // Clear OC1A / OC1B on Compare Match (Set output to low level).
// 2. force output compare to make it happen (doesn't raise interrupts)
TCCR1C |= _BV(FOC1A) | _BV(FOC1B); // FOC1A / FOC1B Force Output Compare A and B (that are in register TCCR1C)
// OCIE1A: Timer/Counter Output Compare Match Interrupt Enable A, ISR(TIMER1_COMPA_vect) // disable ICIE1, Input Capture Interrupt
TIMSK1 = _BV(OCIE1A);
// init the output compare values
OCR1A = ocr1a_load + a;
OCR1B = ocr1b_load + a;
// Set OC1A/OC1B on Compare Match (Set output to high level)
// WGM13:0 = 00, normal mode: count from BOTTOM to MAX
TCCR1A = _BV(COM1A1) | _BV(COM1A0) | _BV(COM1B1) | _BV(COM1B0); // Set OC1A / OC1B on Compare Match (Set output to high level).
#ifdef DEBUG
Serial.print(c); Serial.print(" "); Serial.print(a); Serial.print(" "); Serial.println(b);
Serial.flush();
#endif
TIFR1 = 0xff; //clear all timer1 interrupt flags
}
ISR(TIMER1_COMPA_vect) {
// now potx are sent. we don't know if poty is still in progress.
// POTX is HIGH from OC1A TIMER1 compare match. POTY is ?.
#ifdef DEBUG
Serial.println("TIMER1_COMPA_vect"); Serial.flush();
#endif
TIMSK1 = _BV(ICIE1); // ICIE1: Timer/Counter1, Input Capture Interrupt Enable // disable TIMER1 interrupts (Compare Match Interrupt A)
TIFR1 = 0xff; //clear all timer1 interrupt flags
}