Diff: main.cpp

Revision:

0:87a84e072ec7

Child:

1:d4624c8ba9f5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Nov 09 13:42:34 2015 +0000
@@ -0,0 +1,71 @@
+#include "mbed.h"
+//SDA , SCL
+I2C i2cBus(PB_9, PB_8);
+
+Serial pc(SERIAL_TX, SERIAL_RX);
+
+#define NUNCHUK_8BIT_ADDR 0x52<<1  //   8-bit I2C slave address  = (  ( 7bit i2c address) <<  1  |  (read/write) bit 
+
+typedef struct {
+    int xStick;
+    int yStick;
+    int xAcc;
+    int yAcc;
+    int zAcc;
+    bool bButtonC;
+    bool bButtonZ;
+} NunchukData;
+
+void initNunchuk()
+{
+    i2cBus.frequency(100000);
+
+    wait(0.5);
+
+    char cmd[2];
+    cmd[0] = 0x40;
+    cmd[1] = 0x00;
+    i2cBus.write(NUNCHUK_8BIT_ADDR, cmd, 2) ;
+
+    cmd[0] = 0xF0;
+    cmd[1] = 0x55;
+    i2cBus.write(NUNCHUK_8BIT_ADDR, cmd, 2) ;
+
+    cmd[0] = 0xFB;
+    cmd[1] = 0x00;
+    i2cBus.write(NUNCHUK_8BIT_ADDR, cmd, 2) ;
+}
+
+void GetNunchukData(NunchukData &data)
+{
+    char buffer[6];
+
+    char cmd[1];
+    cmd[0] = 0x00;
+    i2cBus.write(NUNCHUK_8BIT_ADDR, cmd, 1) ;
+
+    wait(.01);
+
+    i2cBus.read(NUNCHUK_8BIT_ADDR, buffer, 6) ;
+
+    data.xStick   = buffer[0];
+    data.yStick   = buffer[1];
+    data.xAcc     = (buffer[2] << 2) + ((buffer[5] & 0x0C) >> 2);
+    data.yAcc     = (buffer[3] << 2) + ((buffer[5] & 0x30) >> 4);
+    data.zAcc     = (buffer[4] << 2) + ((buffer[5] & 0xC0) >> 6);
+    data.bButtonZ = (buffer[5] & 1) == 0;
+    data.bButtonC = (buffer[5] & 2) == 0;
+}
+
+int main()
+{
+    NunchukData nunchukData;
+
+    initNunchuk();
+    while(true) {
+        GetNunchukData(nunchukData);
+        printf("x-yoy %3d,y-yoy %3d ",nunchukData.xStick,nunchukData.yStick );
+        printf("\r\n")
+    }
+}
+