USB_Host_Shield_2.0/examples/HID/USBHIDJoystick/hidjoystickrptparser.cpp
2013-06-17 15:37:09 -04:00

95 lines
2 KiB
C++

#include "hidjoystickrptparser.h"
JoystickReportParser::JoystickReportParser(JoystickEvents *evt) :
joyEvents(evt),
oldHat(0xDE),
oldButtons(0)
{
for (uint8_t i=0; i<RPT_GEMEPAD_LEN; i++)
oldPad[i] = 0xD;
}
void JoystickReportParser::Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf)
{
bool match = true;
// Checking if there are changes in report since the method was last called
for (uint8_t i=0; i<RPT_GEMEPAD_LEN; i++)
if (buf[i] != oldPad[i])
{
match = false;
break;
}
// Calling Game Pad event handler
if (!match && joyEvents)
{
joyEvents->OnGamePadChanged((const GamePadEventData*)buf);
for (uint8_t i=0; i<RPT_GEMEPAD_LEN; i++) oldPad[i] = buf[i];
}
uint8_t hat = (buf[5] & 0xF);
// Calling Hat Switch event handler
if (hat != oldHat && joyEvents)
{
joyEvents->OnHatSwitch(hat);
oldHat = hat;
}
uint16_t buttons = (0x0000 | buf[6]);
buttons <<= 4;
buttons |= (buf[5] >> 4);
uint16_t changes = (buttons ^ oldButtons);
// Calling Button Event Handler for every button changed
if (changes)
{
for (uint8_t i=0; i<0x0C; i++)
{
uint16_t mask = (0x0001 << i);
if (((mask & changes) > 0) && joyEvents)
if ((buttons & mask) > 0)
joyEvents->OnButtonDn(i+1);
else
joyEvents->OnButtonUp(i+1);
}
oldButtons = buttons;
}
}
void JoystickEvents::OnGamePadChanged(const GamePadEventData *evt)
{
Serial.print("X: ");
D_PrintHex<uint8_t>(evt->X, 0x80);
Serial.print("\tY: ");
D_PrintHex<uint8_t>(evt->Y, 0x80);
Serial.print("\tZ: ");
D_PrintHex<uint8_t>(evt->Z1, 0x80);
Serial.print("\tZ: ");
D_PrintHex<uint8_t>(evt->Z2, 0x80);
Serial.print("\tRz: ");
D_PrintHex<uint8_t>(evt->Rz, 0x80);
Serial.println("");
}
void JoystickEvents::OnHatSwitch(uint8_t hat)
{
Serial.print("Hat Switch: ");
D_PrintHex<uint8_t>(hat, 0x80);
Serial.println("");
}
void JoystickEvents::OnButtonUp(uint8_t but_id)
{
Serial.print("Up: ");
Serial.println(but_id, DEC);
}
void JoystickEvents::OnButtonDn(uint8_t but_id)
{
Serial.print("Dn: ");
Serial.println(but_id, DEC);
}