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Create RetroJoystickAdapter_Atari.ino

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Jarno Lehtinen 2018-02-27 22:37:44 +02:00 committed by GitHub
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//DB9 (8=GND): 1 2 3 4 5 6 7 8 9
const uint8_t inputPinsPort1[] = { 5, 6, 7, 8, A2, 0, 0, 0, 4};
const uint8_t inputPinsPort2[] = {10, 16, 14, 15, A1, 0, 0, 0, 3};
//#define DEBUG
inline void translateState(uint8_t *data, uint8_t *state) {
state[0] = !bitRead(data[0], 4);
state[1] = 127;
state[2] = 127;
if (!bitRead(data[0], 0)) state[2] = 0; /* up */
if (!bitRead(data[0], 1)) state[2] = 255; /* down */
if (!bitRead(data[0], 2)) state[1] = 0; /* left */
if (!bitRead(data[0], 3)) state[1] = 255; /* right */
}
#include "HID.h"
#if ARDUINO < 10606
#error The Joystick2 library requires Arduino IDE 1.6.6 or greater. Please update your IDE.
#endif
#if !defined(USBCON)
#error The Joystick2 library can only be used with a USB MCU (e.g. Arduino Leonardo, Arduino Micro, etc.).
#endif
#if !defined(_USING_HID)
#error "legacy HID core (non pluggable)"
#endif
#define JOYSTICK_REPORT_ID 0x04
#define JOYSTICK2_REPORT_ID 0x05
#define JOYSTICK_DATA_SIZE 1
#define JOYSTICK_STATE_SIZE 3
//================================================================================
//================================================================================
// Joystick (Gamepad)
#define HIDDESC_MACRO(REPORT_ID) \
/* Joystick # */ \
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ \
0x09, 0x04, /* USAGE (Joystick) */ \
0xa1, 0x01, /* COLLECTION (Application) */ \
0x85, REPORT_ID, /* REPORT_ID */ \
/* 8 Buttons */ \
0x05, 0x09, /* USAGE_PAGE (Button) */ \
0x19, 0x01, /* USAGE_MINIMUM (Button 1) */ \
0x29, 0x01, /* USAGE_MAXIMUM (Button 1) */ \
0x15, 0x00, /* LOGICAL_MINIMUM (0) */ \
0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ \
0x75, 0x01, /* REPORT_SIZE (1) */ \
0x95, 0x08, /* REPORT_COUNT (8) */ \
0x81, 0x02, /* INPUT (Data,Var,Abs) */ \
/* X and Y Axis */ \
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ \
0x09, 0x01, /* USAGE (Pointer) */ \
0xA1, 0x00, /* COLLECTION (Physical) */ \
0x09, 0x30, /* USAGE (x) */ \
0x09, 0x31, /* USAGE (y) */ \
0x15, 0x00, /* LOGICAL_MINIMUM (0) */ \
0x26, 0xff, 0x00, /* LOGICAL_MAXIMUM (255) */ \
0x75, 0x08, /* REPORT_SIZE (8) */ \
0x95, 0x02, /* REPORT_COUNT (2) */ \
0x81, 0x02, /* INPUT (Data,Var,Abs) */ \
0xc0, /* END_COLLECTION */ \
0xc0 /* END_COLLECTION */
static const uint8_t hidReportDescriptor[] PROGMEM = {
HIDDESC_MACRO(JOYSTICK_REPORT_ID),
HIDDESC_MACRO(JOYSTICK2_REPORT_ID)
};
class Joystick_ {
private:
uint8_t joystickId;
uint8_t reportId;
uint8_t olddata[JOYSTICK_DATA_SIZE];
uint8_t state[JOYSTICK_STATE_SIZE];
uint8_t flag;
public:
uint8_t type;
uint8_t data[JOYSTICK_DATA_SIZE];
Joystick_(uint8_t initJoystickId, uint8_t initReportId) {
// Setup HID report structure
static bool usbSetup = false;
if (!usbSetup) {
static HIDSubDescriptor node(hidReportDescriptor, sizeof(hidReportDescriptor));
HID().AppendDescriptor(&node);
usbSetup = true;
}
// Initalize State
joystickId = initJoystickId;
reportId = initReportId;
data[0] = 0;
data[1] = 0;
memcpy(olddata, data, JOYSTICK_DATA_SIZE);
translateState(data, state);
sendState(1);
}
void updateState() {
if (memcmp(olddata, data, JOYSTICK_DATA_SIZE)) {
memcpy(olddata, data, JOYSTICK_DATA_SIZE);
translateState(data, state);
flag = 1;
}
}
void sendState(uint8_t force = 0) {
if (flag || force) {
// HID().SendReport(Report number, array of values in same order as HID descriptor, length)
HID().SendReport(reportId, state, JOYSTICK_STATE_SIZE);
flag = 0;
}
}
};
Joystick_ Joystick[2] =
{
Joystick_(0, JOYSTICK_REPORT_ID),
Joystick_(1, JOYSTICK2_REPORT_ID)
};
//================================================================================
//================================================================================
void setup() {
for (uint8_t i = 0; i < 9; i++) {
if (inputPinsPort1[i] != 0)
pinMode(inputPinsPort1[i], INPUT_PULLUP);
if (inputPinsPort2[i] != 0)
pinMode(inputPinsPort2[i], INPUT_PULLUP);
} //without PULLUP every button are read as pressed down if controller is not connected.
#ifdef DEBUG
Serial.begin(115200);
#endif
}
void loop() {
Joystick[0].data[0] = 0xff;
Joystick[1].data[0] = 0xff;
for (uint8_t i = 0; i < 4; i++) {
bitWrite(Joystick[0].data[0], i, digitalRead(inputPinsPort1[i])); //AXES1
bitWrite(Joystick[1].data[0], i, digitalRead(inputPinsPort2[i])); //AXES2
}
bitWrite(Joystick[0].data[0], 4, digitalRead(inputPinsPort1[8]));
bitWrite(Joystick[1].data[0], 4, digitalRead(inputPinsPort2[8]));
#ifdef DEBUG
Serial.print(" data0 j1: 0x"); Serial.print(Joystick[0].data[0], HEX);
Serial.print(" data0 j2: 0x"); Serial.print(Joystick[1].data[0], HEX);
Serial.println();
delay(50);
Serial.flush();
#endif
Joystick[0].updateState();
Joystick[1].updateState();
Joystick[0].sendState();
Joystick[1].sendState();
delayMicroseconds(500);
}