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/*
* WiiChuck
* Flamingo EDA http://www.flamingoeda.com
*
*/
#include "WiiChuck.h"
void WiiChuck::init()
{
Wire.begin();
Wire.beginTransmission(WII_I2C_ADDR);
Wire.send(0x40);
Wire.send(0x00);
Wire.endTransmission();
}
void WiiChuck::initWithPower()
{
initWithPowerPins(PORTC3, PORTC2);
}
void WiiChuck::initWithPowerPins(byte powerPin, byte gndPin)
{
DDRC |= _BV(powerPin) | _BV(gndPin);
PORTC &= ~_BV(gndPin);
PORTC |= _BV(powerPin);
delay(100);
init();
}
boolean WiiChuck::read()
{
int count = 0;
Wire.requestFrom(WII_I2C_ADDR, PACKAGE_LENGTH);
while(Wire.available()) {
buffer[count++] = decodeByte(Wire.receive());
}
// send request for next bytes
sendNullRequest();
if (count < 5) {
return false;
}
// update data
joyAxisX = buffer[0];
joyAxisY = buffer[1];
accelAxisX = buffer[2];
accelAxisY = buffer[3];
accelAxisZ = buffer[4];
buttonZ = 0;
buttonC = 0;
if ((buffer[5] >> 0) & 1) {
buttonZ = 1;
}
if ((buffer[5] >> 1) & 1) {
buttonC = 1;
}
if ((buffer[5] >> 2) & 1) {
accelAxisX += 2;
}
if ((buffer[5] >> 3) & 1) {
accelAxisX += 1;
}
if ((buffer[5] >> 4) & 1) {
accelAxisY += 2;
}
if ((buffer[5] >> 5) & 1) {
accelAxisY += 1;
}
if ((buffer[5] >> 2) & 1) {
accelAxisZ += 2;
}
if ((buffer[5] >> 3) & 1) {
accelAxisZ += 1;
}
return true;
}
int WiiChuck::getJoyAxisX()
{
return joyAxisX;
}
int WiiChuck::getJoyAxisY()
{
return joyAxisY;
}
int WiiChuck::getAccelAxisX()
{
return accelAxisX;
}
int WiiChuck::getAccelAxisY()
{
return accelAxisY;
}
int WiiChuck::getAccelAxisZ()
{
return accelAxisZ;
}
int WiiChuck::getButtonZ()
{
return buttonZ;
}
int WiiChuck::getButtonC()
{
return buttonC;
}
/*****************************************************************************
* PRIVATE METHODS
****************************************************************************/
byte WiiChuck::decodeByte(byte x)
{
x = (x ^ 0x17) + 0x17;
return x;
}
void WiiChuck::sendNullRequest()
{
Wire.beginTransmission(WII_I2C_ADDR);
Wire.send(0x00);
Wire.endTransmission();
}
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