Diff: WiiChuk_compat.cpp

Revision:

1:7ff30607465f

Parent:

0:e84a5ccbac19

Child:

2:566662f892b1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WiiChuk_compat.cpp	Mon Jun 08 15:31:50 2015 +0000
@@ -0,0 +1,159 @@
+#include "WiiChuk_compat.hpp"
+
+
+
+WiiChuck::WiiChuck(PinName data, PinName clk, Stream &_pc):_i2c(data, clk), pc(_pc) {
+    _i2c.frequency(400000); // 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("WiiChuck init nack %i\r\n", _i2c.write(NUNCHUCK_ADDR, (const char*)cmd, sizeof(cmd), true));
+  
+    _oldC = 0;
+    _oldZ = 0;
+}
+
+bool WiiChuck::Read(int* joyX,int* joyY,int* accX,int* accY,int* accZ,int* buttonC,int* 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
+            *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()
+{
+    int joyX = 0;int joyY = 0;
+    int accX = 0;int accY = 0;int accZ = 0;
+    int buttonC = 0;int 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;
+}
+
+