USB_Host_Shield_2.0/PS4Parser.cpp
2014-01-19 16:58:29 +01:00

116 lines
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3.8 KiB
C++

/* Copyright (C) 2014 Kristian Lauszus, TKJ Electronics. All rights reserved.
This software may be distributed and modified under the terms of the GNU
General Public License version 2 (GPL2) as published by the Free Software
Foundation and appearing in the file GPL2.TXT included in the packaging of
this file. Please note that GPL2 Section 2[b] requires that all works based
on this software must also be made publicly available under the terms of
the GPL2 ("Copyleft").
Contact information
-------------------
Kristian Lauszus, TKJ Electronics
Web : http://www.tkjelectronics.com
e-mail : kristianl@tkjelectronics.com
*/
#include "PS4Parser.h"
// To enable serial debugging see "settings.h"
//#define PRINTREPORT // Uncomment to print the report send by the PS4 Controller
bool PS4Parser::checkDpad(ButtonEnum b) {
switch (b) {
case UP:
return ps4Data.btn.dpad == DPAD_LEFT_UP || ps4Data.btn.dpad == DPAD_UP || ps4Data.btn.dpad == DPAD_UP_RIGHT;
case RIGHT:
return ps4Data.btn.dpad == DPAD_UP_RIGHT || ps4Data.btn.dpad == DPAD_RIGHT || ps4Data.btn.dpad == DPAD_RIGHT_DOWN;
case DOWN:
return ps4Data.btn.dpad == DPAD_RIGHT_DOWN || ps4Data.btn.dpad == DPAD_DOWN || ps4Data.btn.dpad == DPAD_DOWN_LEFT;
case LEFT:
return ps4Data.btn.dpad == DPAD_DOWN_LEFT || ps4Data.btn.dpad == DPAD_LEFT || ps4Data.btn.dpad == DPAD_LEFT_UP;
default:
return false;
}
}
bool PS4Parser::getButtonPress(ButtonEnum b) {
if (b <= LEFT) // Dpad
return checkDpad(b);
else {
uint8_t button = pgm_read_byte(&PS4_BUTTONS[(uint8_t)b]);
uint8_t index = button < 8 ? 0 : button < 16 ? 1 : 2;
uint8_t mask = 1 << (button - 8 * index);
return ps4Data.btn.val[index] & mask;
}
}
bool PS4Parser::getButtonClick(ButtonEnum b) {
uint8_t mask, index = 0;
if (b <= LEFT) // Dpad
mask = 1 << b;
else {
uint8_t button = pgm_read_byte(&PS4_BUTTONS[(uint8_t)b]);
index = button < 8 ? 0 : button < 16 ? 1 : 2;
mask = 1 << (button - 8 * index);
}
bool click = buttonClickState.val[index] & mask;
buttonClickState.val[index] &= ~mask; // Clear "click" event
return click;
}
uint8_t PS4Parser::getAnalogButton(ButtonEnum b) {
if (b == L2) // These are the only analog buttons on the controller
return ps4Data.trigger[0];
else if (b == R2)
return ps4Data.trigger[1];
return 0;
}
uint8_t PS4Parser::getAnalogHat(AnalogHatEnum a) {
return ps4Data.hatValue[(uint8_t)a];
}
void PS4Parser::Parse(uint8_t len, uint8_t *buf) {
if (len > 0 && buf) {
#ifdef PRINTREPORT
for (uint8_t i = 0; i < len; i++) {
D_PrintHex<uint8_t > (buf[i], 0x80);
Notify(PSTR(" "), 0x80);
}
Notify(PSTR("\r\n"), 0x80);
#endif
memcpy(&ps4Data, buf, min(len, sizeof(ps4Data)));
if (ps4Data.reportId != 0x01) {
#ifdef DEBUG_USB_HOST
Notify(PSTR("\r\nUnknown report id"), 0x80);
#endif
return;
}
for (uint8_t i = 0; i < sizeof(ps4Data.btn); i++) {
if (ps4Data.btn.val[i] != oldButtonState.val[i]) { // Check if anything has changed
buttonClickState.val[i] = ps4Data.btn.val[i] & ~oldButtonState.val[i]; // Update click state variable
oldButtonState.val[i] = ps4Data.btn.val[i];
if (i == 0) { // The DPAD buttons does not set the different bits, but set a value corresponding to the buttons pressed, we will simply set the bits ourself
uint8_t newDpad = 0;
if (checkDpad(UP))
newDpad |= 1 << UP;
if (checkDpad(RIGHT))
newDpad |= 1 << RIGHT;
if (checkDpad(DOWN))
newDpad |= 1 << DOWN;
if (checkDpad(LEFT))
newDpad |= 1 << LEFT;
if (newDpad != oldDpad) {
buttonClickState.dpad = newDpad & ~oldDpad; // Override values
oldDpad = newDpad;
}
}
}
}
}
}