Wii Nunchuk module with nasty hacks from debugging on a FRDM-KL25Z
Fork of WiiChuk_compat by
WiiChuk_compat.cpp
- Committer:
- eisd
- Date:
- 2017-01-04
- Revision:
- 4:bf058247fb2f
- Parent:
- 2:566662f892b1
File content as of revision 4:bf058247fb2f:
#include "WiiChuk_compat.hpp" WiiChuck::WiiChuck(PinName data, PinName clk, Stream &_pc):_i2c(data, clk), pc(_pc) { _i2c.frequency(50000); // should work at 100000 too Error = true; // initialize Wii extension (nunchuk) based on "new way" initialization // http://wiibrew.org/wiki/Wiimote#The_New_Way // also disables need for decryption unsigned char cmd[] = {0xF0, 0x55}; if (_i2c.write(NUNCHUCK_ADDR, (const char*)cmd, sizeof(cmd), true) == I2C_ACK) { Error = false; } cmd[0] = 0xfb; cmd[1]= 0x00; //pc.printf("%i\r\n", _i2c.write(NUNCHUCK_ADDR, (const char*)cmd, sizeof(cmd), true)); _oldC = 0; _oldZ = 0; } bool WiiChuck::Read(uint8_t* joyX, uint8_t* joyY, uint16_t* accX, uint16_t* accY, uint16_t* accZ, uint8_t* buttonC, uint8_t* buttonZ) { //int i; char readBuf[NUNCHUCK_READLEN]; if (Error) { return false; } const unsigned char cmd[] = {0x00}; if (_i2c.write(NUNCHUCK_ADDR, (const char*)cmd, sizeof(cmd)) == I2C_ACK) { wait(I2C_READ_DELAY); if (_i2c.read(NUNCHUCK_ADDR, readBuf, sizeof(readBuf)) == I2C_ACK) { //init values //n->X = 0; n->Y = 0; n->aX = 0; n->aY = 0; n->aZ = 0; n->C = 0; n->Z = 0; *joyX = 0; *joyY = 0; *accX = 0; *accY = 0; *accZ = 0; *buttonC = 0; *buttonZ = 0; /* pc.printf("\r\n"); // Decrypting not required with new initialization for (int i = 0; i < NUNCHUCK_READLEN; ++i) { // readBuf[i] = (readBuf[i] ^ 0x17) + 0x17; pc.printf("%i ", readBuf[i]); } pc.printf("\r\n"); */ *joyX = readBuf[Joy_X]; *joyY = readBuf[Joy_Y]; *accX = readBuf[Acc_X] << 2; *accY = readBuf[Acc_Y] << 2; *accZ = readBuf[Acc_Z] << 2; if (readBuf[Button] & 0x01) { *buttonZ = 0; } else { *buttonZ = 1; } if (readBuf[Button] & 0x02) { *buttonC = 0; } else { *buttonC = 1; } if (readBuf[Button] & 0x04) accX += 2; if (readBuf[Button] & 0x08) accX += 1; if (readBuf[Button] & 0x10) accY += 2; if (readBuf[Button] & 0x20) accY += 1; if (readBuf[Button] & 0x40) accZ += 2; if (readBuf[Button] & 0x80) accZ += 1; return true; } else { pc.printf("no read ack\r\n"); return false; } } else { pc.printf("no write ack\r\n"); return false; } } void WiiChuck::start() { _getValues.attach(this, &WiiChuck::getValues,0.2); } void WiiChuck::stop() { _getValues.detach(); } void WiiChuck::getValues() { uint8_t joyX = 0, joyY = 0; uint16_t accX = 0, accY = 0, accZ = 0; uint8_t buttonC = 0, buttonZ = 0; bool read = Read(&joyX,&joyY,&accX,&accY,&accZ,&buttonC,&buttonZ); if(read) { //analyse if(_oldC == 0 && buttonC == 1) { _oldC = 1; _callback_input(BUTTON_CANCEL_VALUE); return; } else { _oldC = buttonC; } //analyse if(_oldZ == 0 && buttonZ == 1) { _oldZ = 1; _callback_input(BUTTON_OK_VALUE); return; } else { _oldZ = buttonZ; } if(joyY>160) { _callback_input(BUTTON_VOLUME_PLUS); return; } if(joyY<80) { _callback_input(BUTTON_VOLUME_MINUS); return; } if(joyX>160) { _callback_input(BUTTON_NEXT_VALUE); return; } if(joyX<80) { _callback_input(BUTTON_PREV_VALUE); return; } } } void WiiChuck::attach(pt2Func function) { _callback_input = function; }