Create c64_usb_mouse.ino
This commit is contained in:
Jarno Lehtinen
GitHub
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commit
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#include <hidboot.h>
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#include <usbhub.h>
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/*#define SENSEPORT PORTD ///< SID sense port
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#define SENSEDDR DDRD ///< SID sense data direction
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#define SENSEPIN PIND ///< SID sense input*/
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#define POTSENSE 3 ///< INT1 attached to PORTD.3,
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/*#define POTPORT PORTB ///< POT-controlling outputs X and Y
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#define POTDDR DDRB ///< POT outputs data direction
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#define POTPIN PINB ///< POT outputs input ;)*/
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#define POTX 9 ///< X-line, also OC1A
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#define POTY 10 ///< Y-line, also OC1B
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#define LBTN 4 ///< Joystick FIRE switch
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#define RBTN 5 ///< Joystick UP switch
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/*#define JOYPORT PORTC ///< Joystick pins
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#define JOYDDR DDRC ///< Joystick pins data direction (out = switch closed to gnd)
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#define JOYPIN PINC ///< Joystick in*/
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/*#define JOYUP 5 ///< Joystick UP switch
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#define JOYDOWN 6 ///< Joystick DOWN switch
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#define JOYLEFT 7 ///< Joystick LEFT switch
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#define JOYRIGHT 8 ///< Joystick RIGHT switch
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#define JOYFIRE 9 ///< Joystick FIRE switch*/
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//#define DEBUG
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int16_t dx=0;
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int16_t dy=0;
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uint8_t buttons=0;
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uint8_t update = 0;
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#define FIX_START 90
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int16_t fix = FIX_START;
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class MouseRptParser : public MouseReportParser {
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protected:
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void OnMouseMove(MOUSEINFO *mi);
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void OnLeftButtonUp(MOUSEINFO *mi);
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void OnLeftButtonDown(MOUSEINFO *mi);
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void OnRightButtonUp(MOUSEINFO *mi);
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void OnRightButtonDown(MOUSEINFO *mi);
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void OnMiddleButtonUp(MOUSEINFO *mi);
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void OnMiddleButtonDown(MOUSEINFO *mi);
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};
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void MouseRptParser::OnMouseMove(MOUSEINFO *mi) {
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#ifdef DEBUG
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Serial.print("dx=");
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Serial.print(mi->dX, DEC);
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Serial.print(" dy=");
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Serial.println(mi->dY, DEC);
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#endif
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dx=mi->dX;
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dy=mi->dY;
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update = 1;
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};
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void MouseRptParser::OnLeftButtonUp(MOUSEINFO *mi) {
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#ifdef DEBUG
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Serial.println("L Butt Up");
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#endif
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buttons &= ~1;
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update = 1;
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};
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void MouseRptParser::OnLeftButtonDown(MOUSEINFO *mi) {
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#ifdef DEBUG
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Serial.println("L Butt Dn");
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#endif
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buttons |= 1;
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update = 1;
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fix++;
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};
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void MouseRptParser::OnRightButtonUp(MOUSEINFO *mi) {
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#ifdef DEBUG
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Serial.println("R Butt Up");
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#endif
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buttons &= ~2;
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update = 1;
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};
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void MouseRptParser::OnRightButtonDown(MOUSEINFO *mi) {
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#ifdef DEBUG
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Serial.println("R Butt Dn");
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#endif
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buttons |= 2;
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update = 1;
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fix--;
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};
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void MouseRptParser::OnMiddleButtonUp(MOUSEINFO *mi) {
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#ifdef DEBUG
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Serial.println("M Butt Up");
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#endif
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};
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void MouseRptParser::OnMiddleButtonDown(MOUSEINFO *mi) {
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#ifdef DEBUG
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Serial.println("M Butt Dn");
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#endif
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fix = FIX_START;
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};
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USB Usb;
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USBHub Hub(&Usb);
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HIDBoot<USB_HID_PROTOCOL_MOUSE> HidMouse(&Usb);
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MouseRptParser Prs;
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enum _potmode {
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POTMOUSE_C1351 = 0, //<! proportional mode
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POTMOUSE_JOYSTICK //<! joystick mode
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};
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static uint8_t potmouse_xcounter; ///< x axis counter
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static uint8_t potmouse_ycounter; ///< y axis counter
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static volatile uint16_t ocr1a_load; ///< precalculated OCR1A value (YPOT)
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static volatile uint16_t ocr1b_load; ///< precalculated OCR1B value (XPOT)
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#define OCR_ZERO 320 ///< zero point (320us)
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//static volatile uint8_t mode; ///< mouse mode
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uint8_t mode; ///< mouse mode
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void setup() {
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#ifdef DEBUG
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Serial.begin(115200);
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Serial.println("Start");
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Serial.flush();
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delay(200);
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#endif
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if (Usb.Init() == -1) {
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#ifdef DEBUG
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Serial.println("OSC did not start.");
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#endif
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}
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delay(200);
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HidMouse.SetReportParser(0, &Prs);
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#ifdef DEBUG
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Serial.flush();
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delay(200);
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#endif
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mode = POTMOUSE_C1351;
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pinMode(LBTN, INPUT); pinMode(RBTN, INPUT);
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pinMode(POTX, OUTPUT); pinMode(POTY, OUTPUT);
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digitalWrite(POTX, HIGH); digitalWrite(POTY, HIGH);
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pinMode(POTSENSE, INPUT); // pullup off, hi-biased by OC1A
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attachInterrupt(digitalPinToInterrupt(POTSENSE), potSenseInt, FALLING);
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potmouse_movt(0,0,0);
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// prepare INT1
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//GICR &= ~_BV(INT1); // disable INT1
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//MCUCR &= ~(_BV(ISC11)|_BV(ISC10));
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//MCUCR |= _BV(ISC11); // ISC11:ISC10 == 10, @negedge
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}
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void loop() {
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Usb.Task();
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if (update) {
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potmouse_movt(dx, dy, buttons);
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update = 0;
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}
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delayMicroseconds(200);
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//potmouse_movt(dx, dy, buttons);
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/*noInterrupts();
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if(digitalRead(POTSENSE
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interrupts();*/
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}
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void potmouse_movt(int16_t dx, int16_t dy, uint8_t button) {
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uint16_t a, b;
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switch (mode) {
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case POTMOUSE_C1351:
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/*potmouse_xcounter = (potmouse_xcounter + dx) & 077; // modulo 64
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//potmouse_ycounter = (potmouse_ycounter + dy) & 077;
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potmouse_ycounter = (potmouse_ycounter - dy) & 077;*/
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//potmouse_xcounter = (potmouse_xcounter + (dx/2)) & 077; // modulo 64
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//potmouse_ycounter = (potmouse_ycounter - (dy/2)) & 077;
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potmouse_xcounter = (potmouse_xcounter + (dx/4)) & 077; // modulo 64
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potmouse_ycounter = (potmouse_ycounter - (dy/4)) & 077;
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//potmouse_xcounter = (millis()>>6) & 077; // modulo 64
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//potmouse_ycounter = (millis()>>6) & 077;
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/*(button & 001) ? (JOYDDR |= _BV(JOYFIRE)) : (JOYDDR &= ~_BV(JOYFIRE));
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(button & 002) ? (JOYDDR |= _BV(JOYUP)) : (JOYDDR &= ~_BV(JOYUP));
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(button & 004) ? (JOYDDR |= _BV(JOYDOWN)) : (JOYDDR &= ~_BV(JOYDOWN));*/
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(button & 001) ? pinMode(LBTN, OUTPUT) : pinMode(LBTN, INPUT);
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(button & 002) ? pinMode(RBTN, OUTPUT) : pinMode(RBTN, INPUT);
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// scale should be 2x here, but for this particular chip, 66 counts work better where
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// 64 counds should be. so 66/64=100/96 and times two
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//a = (OCR_ZERO + potmouse_xcounter*200/96)*2; // "*2" because 16MHz, not 8MHz //yli
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//b = (OCR_ZERO + potmouse_ycounter*200/96)*2; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO + potmouse_xcounter*2; // "*2" because 16MHz, not 8MHz
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//b = OCR_ZERO + potmouse_ycounter*2; // "*2" because 16MHz, not 8MHz
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//a = (OCR_ZERO + potmouse_xcounter*200/90)*2; // "*2" because 16MHz, not 8MHz
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//b = (OCR_ZERO + potmouse_ycounter*200/90)*2; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2 + potmouse_xcounter*400/85; // "*2" because 16MHz, not 8MHz
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//b = OCR_ZERO*2 + potmouse_ycounter*400/85; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2 + potmouse_xcounter*400/80; // "*2" because 16MHz, not 8MHz //ali
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//b = OCR_ZERO*2 + potmouse_ycounter*400/80; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2 + potmouse_xcounter*400/93; // "*2" because 16MHz, not 8MHz //vois olla lähellä
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//b = OCR_ZERO*2 + potmouse_ycounter*400/93; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2 + potmouse_xcounter*400/91; // "*2" because 16MHz, not 8MHz //vois olla lähellä
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//b = OCR_ZERO*2 + potmouse_ycounter*400/91; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2-1 + potmouse_xcounter*400/94; // "*2" because 16MHz, not 8MHz
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//b = OCR_ZERO*2-1 + potmouse_ycounter*400/94; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2-2 + potmouse_xcounter*400/92; // "*2" because 16MHz, not 8MHz
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//b = OCR_ZERO*2-2 + potmouse_ycounter*400/92; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2+2 + potmouse_xcounter*400/92; // "*2" because 16MHz, not 8MHz //valuu vasemmalle alas
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//b = OCR_ZERO*2+2 + potmouse_ycounter*400/92; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2 + potmouse_xcounter*400/fix; // "*2" because 16MHz, not 8MHz
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//b = OCR_ZERO*2 + potmouse_ycounter*400/fix; // "*2" because 16MHz, not 8MHz
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//a = OCR_ZERO*2-20 + potmouse_xcounter*400/fix; // "*2" because 16MHz, not 8MHz
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//b = OCR_ZERO*2-20 + potmouse_ycounter*400/fix; // "*2" because 16MHz, not 8MHz
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a = OCR_ZERO*2 + potmouse_xcounter*400/92; // "*2" because 16MHz, not 8MHz
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b = OCR_ZERO*2 + potmouse_ycounter*400/92; // "*2" because 16MHz, not 8MHz
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ocr1a_load = a;
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ocr1b_load = b;
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break;
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case POTMOUSE_JOYSTICK:
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/*JOYDDR &= ~(_BV(JOYFIRE) | _BV(JOYUP) | _BV(JOYDOWN) | _BV(JOYLEFT) | _BV(JOYRIGHT));
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(dx < 0) ? (JOYDDR |= _BV(JOYLEFT)) : (JOYDDR &= ~_BV(JOYLEFT));
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(dx > 0) ? (JOYDDR |= _BV(JOYRIGHT)): (JOYDDR &= ~_BV(JOYRIGHT));
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(dy < 0) ? (JOYDDR |= _BV(JOYDOWN)) : (JOYDDR &= ~_BV(JOYDOWN));
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(dy > 0) ? (JOYDDR |= _BV(JOYUP)) : (JOYDDR &= ~_BV(JOYUP));
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(button & 001) ? (JOYDDR |= _BV(JOYFIRE)) : (JOYDDR &= ~_BV(JOYFIRE));
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(button & 002) ? (POTDDR |= _BV(POTX)) : (POTDDR &= ~_BV(POTX));
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TCNT1 = 65535-256;
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TCCR1A = 0;
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TCCR1B = _BV(CS12)|_BV(CS10);
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TIFR |= _BV(TOV1);
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TIMSK |= _BV(TOIE1);*/
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break;
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}
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}
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/// SID measuring cycle detected.
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///
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/// 1. SID pulls POTX low\n
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/// 2. SID waits 256 cycles us\n
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/// 3. SID releases POTX\n
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/// 4. 0 to 255 cycles until the cap is charged\n
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///
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/// This handler stops the Timer1, clears OC1A/OC1B outputs,
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/// loads the timer with values precalculated in potmouse_movt()
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/// and starts the timer.
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///
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/// OC1A/OC1B (YPOT/XPOT) lines will go up by hardware.
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/// Normal SID cycle is 512us. Timer will overflow not before 65535us.
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/// Next cycle will begin before that so there's no need to stop the timer.
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/// Output compare match interrupts are thus not used.
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void potSenseInt() {
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#ifdef DEBUG
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Serial.println("PotSenseInt"); Serial.flush();
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#endif
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// SID started to measure the pots, uuu
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// disable INT1 until the measurement cycle is complete
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// stop the timer
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TCCR1B = 0;
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// clear OC1A/OC1B:
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// 1. set output compare to clear OC1A/OC1B ("10" in table 37 on page 97)
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TCCR1A = _BV(COM1A1) | _BV(COM1B1);
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// 2. force output compare to make it happen
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TCCR1C |= _BV(FOC1A) | _BV(FOC1B);
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// Set OC1A/OC1B on Compare Match (Set output to high level)
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// WGM13:0 = 00, normal mode: count from BOTTOM to MAX
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TCCR1A = _BV(COM1A1) | _BV(COM1A0) | _BV(COM1B1) | _BV(COM1B0);
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// load the timer
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TCNT1 = 0;
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// init the output compare values
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OCR1A = ocr1a_load;
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OCR1B = ocr1b_load;
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// start timer with prescaler clk/8 (1 count = 1us) // (with 16MHz, 1 count = 0.5us)
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TCCR1B = _BV(CS11);
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// TEST!!!
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//TCCR1B = _BV(CS12) | _BV(CS10); // Prescaler clock/1024
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//TEST!!!:
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/*OCR1A = 15625*2; // 16 000 000 / 1024 / 15625 = 1s
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OCR1B = 15625/2;
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TCCR1B = _BV(CS12) | _BV(CS10); // Prescaler clock/1024*/
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}
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/*
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/// TIMER1 Overflow vector
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///
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/// Ends joystick emulator pulse.
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ISR(TIMER1_OVF_vect) {
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//JOYDDR &= ~(_BV(JOYFIRE) | _BV(JOYUP) | _BV(JOYDOWN) | _BV(JOYLEFT) | _BV(JOYRIGHT));
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//POTDDR &= ~_BV(POTX);
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TIMSK1 &= ~_BV(TOIE1);
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}*/
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