int main()
{
CyGlobalIntEnable; /* Uncomment this line to enable global interrupts. */
isr_1_StartEx(nunchuck_isr);
VDAC_Start();
I2C_1_Start();
SendHandshake();
for(;;)
{
GetDataFromNunChuck();
CyDelay(1);
int test = GetJoystickY();
VDAC_SetValue(test + 126);
}
}
/*******************************************************************************
* Function Name: void processDAC( void )
********************************************************************************
*
* Summary:
* This function sets the DAC output voltage based on the value copied from the I2C register.
*******************************************************************************/
void processDAC(void)
{
static int32 dacValPrev = 0;
float32 dacVal;
int32 dacCode;
/* Set VDAC value if it has changed */
dacVal = LocData.dacVal;
if(dacValPrev != dacVal)
{
dacValPrev = dacVal;
// DAC range is 2.4V, Valid inputs are -4096 to 4094
dacCode = (int32)(((dacVal * 8192.0)/2.4) - 4096.0);
if (dacCode < -4096)
{
dacCode = -4096;
}
VDAC_SetValue(VDAC_SaturateTwosComp(dacCode));
}
}