ADuC360 - Button rotary encoder

Hi,

A rotary encoder might not be the best option for you if you are just starting with the microcontroller. I will recommend using two push buttons for now and using the interrupt functions of the ADuCM360 to record each press on the push buttons 

regards,

Mark

Hi Mark,

in the end i used the button logic, because the rotary encoder is somehow forming a sequence of switches being pushed or not.

Using the external interupts available on ADuC360 i came up with this code, maybe it wil be usefull for others aswell

void Ext_Int6_Handler ()
{
AB= (DioRd(pADI_GP1) & 0x60);
AB=AB>>5;

if((eflag==0)&&(AB==0x02)) //1st time and 10 pattern?
{
eflag=1;
AB=0; // reset value
}
else if((eflag==0) && ( AB==0x3))
{

eflag=1;

}

if((eflag==1)&&(AB==0x01)) //2nd time 01 pattern - dir CW
{
eflag=0;
eDir=1; //cw flagv
}
else if((eflag==1) && ( AB==0x3))//2nd time, pattern 00 - dir CCW
{
eDir=2; // ccw flag
eflag=0;

}

if((eflag==0)&&(AB==0))
{
eflag=0; // keep flag 0 until a valid pattern is read from gpio
eDir=0; // keep direction in reset
}

EiClr(EXTINT6);
}

// Function to be called where you need
int Encoder_Get_Status(void) {

if (eDir ==1 ) {
eDir=0;
return 1;
}
else if(eDir==2)
{
eDir=0;
return -1;
}
else
{
eDir=0;
return 0;
}


}