1 files changed, 116 insertions, 0 deletions

diff --git a/lib/usbhost/USB_Host_Shield_2.0/PS4Parser.cpp b/lib/usbhost/USB_Host_Shield_2.0/PS4Parser.cpp
new file mode 100644
index 000000000..ca6adce40
--- /dev/null
+++ b/lib/usbhost/USB_Host_Shield_2.0/PS4Parser.cpp
@@ -0,0 +1,116 @@
+/* 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
+                return ps4Data.btn.val & (1UL << pgm_read_byte(&PS4_BUTTONS[(uint8_t)b]));
+}
+
+bool PS4Parser::getButtonClick(ButtonEnum b) {
+        uint32_t mask = 1UL << pgm_read_byte(&PS4_BUTTONS[(uint8_t)b]);
+        bool click = buttonClickState.val & mask;
+        buttonClickState.val &= ~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 > 1 && buf)  {
+#ifdef PRINTREPORT
+                Notify(PSTR("\r\n"), 0x80);
+                for (uint8_t i = 0; i < len; i++) {
+                        D_PrintHex<uint8_t > (buf[i], 0x80);
+                        Notify(PSTR(" "), 0x80);
+                }
+#endif
+
+                if (buf[0] == 0x01) // Check report ID
+                        memcpy(&ps4Data, buf + 1, min((uint8_t)(len - 1), sizeof(ps4Data)));
+                else if (buf[0] == 0x11) { // This report is send via Bluetooth, it has an offset of 2 compared to the USB data
+                        if (len < 4) {
+#ifdef DEBUG_USB_HOST
+                                Notify(PSTR("\r\nReport is too short: "), 0x80);
+                                D_PrintHex<uint8_t > (len, 0x80);
+#endif
+                                return;
+                        }
+                        memcpy(&ps4Data, buf + 3, min((uint8_t)(len - 3), sizeof(ps4Data)));
+                } else {
+#ifdef DEBUG_USB_HOST
+                        Notify(PSTR("\r\nUnknown report id: "), 0x80);
+                        D_PrintHex<uint8_t > (buf[0], 0x80);
+#endif
+                        return;
+                }
+
+                if (ps4Data.btn.val != oldButtonState.val) { // Check if anything has changed
+                        buttonClickState.val = ps4Data.btn.val & ~oldButtonState.val; // Update click state variable
+                        oldButtonState.val = ps4Data.btn.val;
+
+                        // 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;
+                        }
+                }
+        }
+
+        if (ps4Output.reportChanged)
+                sendOutputReport(&ps4Output); // Send output report
+}