170 lines
3.6 KiB
C++
170 lines
3.6 KiB
C++
/*
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Thanks to Dagen Brock:
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BASIC program to test joystick in Apple II emulators:
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5 DP = .10: REM Deadzone Percentage
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10 XLEFT = 0:YUP = 0:XRIGHT = 279:YBOT = 159: REM Screen Bounds
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15 REM Set target box coordinates
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20 HALF = XRIGHT / 2:D1 = INT (HALF - (HALF * DP)):D2 = INT (HALF + (HALF * DP))
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25 HALF = YBOT / 2:D3 = INT (HALF - (HALF * DP)):D4 = INT (HALF + (HALF * DP))
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30 HGR : HCOLOR= 3
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35 REM Draw edge box
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40 X1 = XLEFT:Y1 = YUP:X2 = XRIGHT:Y2 = YBOT: GOSUB 2000:X1 = X1 + 1:X2 = X2 - 1:Y1 = Y1 + 1:Y2 = Y2 - 1: GOSUB 2000
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50 P0 = PDL (0):P1 = PDL (1): GOSUB 3000
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55 PRINT P0,P1
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60 GOTO 50
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2000 HPLOT X1,Y1 TO X1,Y2: HPLOT X1,Y2 TO X2,Y2: HPLOT X2,Y2 TO X2,Y1: HPLOT X2,Y1 TO X1,Y1
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2002 RETURN
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3000 X = INT (P0 * 274 / 255 + 2):Y = INT (P1 * 154 / 255 + 2)
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3010 X1 = X:X2 = X + 1:Y1 = Y:Y2 = Y1 + 1: GOSUB 2000
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3020 GOSUB 4000: HCOLOR= 0: GOSUB 2000: HCOLOR= 3
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3050 RETURN
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4000 HPLOT D1,D3 TO D1,D4: HPLOT D1,D4 TO D2,D4: HPLOT D2,D4 TO D2,D3: HPLOT D2,D3 TO D1,D3
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4010 RETURN : REM End Draw Target Box
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*/
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/* Read Joystick
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*/
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int XPin = A8;
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int YPin = A7;
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int Button0Pin = 9;
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int Button1Pin = 10;
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int JoystickX;
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int JoystickY;
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int XMax = 0;
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int YMax = 0;
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int XMin = 1023;
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int YMin = 1023;
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/*
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adjust CalibrationMax up if the range on your joystick is too restricted to calibrate
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adjust down if your joystick "jumps" around a lot. 800 seems to be a pretty good spot for the sticks i've tested.
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*/
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// int CalibrationMax = 800; // allows for weird "jumpy" joystick potentiometers. these things are 30 years old, after all.
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int CalibrationMax = 9999; // no limit.
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void setup() {
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// Serial.begin(9600);
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pinMode(Button0Pin, INPUT);
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pinMode(Button1Pin, INPUT);
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Joystick.useManualSend(true);
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}
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void loop() {
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/* auto calibrate:
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save X, Y.
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compare them to historical high/low values.
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if higher/lower, reset highest/lowest variable
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highest == 1023
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lowest == 0
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midway between now == 512
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*/
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JoystickX = 1023 - analogRead(XPin); // needs to be inverted!
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JoystickY = 1023 - analogRead(YPin);
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/* auto calibrate:
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save X, Y.
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compare them to historical high/low values.
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if higher/lower, reset highest/lowest variable
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highest == 1023
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lowest == 0
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midway between now == 512
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*/
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// record the maximum sensor value
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// if ((JoystickX < CalibrationMax) && (JoystickX > XMax)) {
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if (JoystickX > XMax) {
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XMax = JoystickX;
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}
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// record the minimum sensor value
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if (JoystickX < XMin) {
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XMin = JoystickX;
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}
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// record the maximum sensor value
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// if ((JoystickY < CalibrationMax) && (JoystickY > YMax)) {
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if (JoystickY > YMax) {
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YMax = JoystickY;
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}
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// record the minimum sensor value
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if (JoystickY < YMin) {
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YMin = JoystickY;
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}
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JoystickX = map(JoystickX, XMin, XMax, 0, 1023);
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JoystickY = map(JoystickY, YMin, YMax, 0, 1023);
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Joystick.X(JoystickX);
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Joystick.Y(JoystickY);
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Joystick.button(1, digitalRead(Button0Pin));
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Joystick.button(2, digitalRead(Button1Pin));
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Joystick.send_now();
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/*
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Serial.print(XMin);
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Serial.print(" -- ");
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Serial.print(JoystickX);
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Serial.print(" -- ");
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Serial.print(XMax);
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Serial.print(" -- || -- ");
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Serial.print(YMin);
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Serial.print(" -- ");
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Serial.print(JoystickY);
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Serial.print(" -- ");
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Serial.println(YMax);
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delay(100);
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*/
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/*
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Serial.print(JoystickX);
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Serial.print(" -- ");
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Serial.print(JoystickY);
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Serial.print(" -- ");
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Serial.print(digitalRead(Button0Pin));
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Serial.print(" -- ");
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Serial.print(digitalRead(Button1Pin));
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Serial.println();
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delay(100);
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*/
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}
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