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Checking encoder port inputs by Riley Porter

This is our TinyG Stepper Controller Board. I tossed some code up on the xmega to test inputs from these "encoder ports" All I am doing is putting 3v onto each pin and it turns off the led that corresponds to the port.

===========CODE===============

#include

#define F_CPU 32000000UL

#include

void Config32MHzClock(void);

int main(void)

{

int data;

Config32MHzClock();

CLK.PSCTRL = 0x00; // no division on peripheral clock

PORTCFG.CLKEVOUT = PORTCFG_CLKOUT_PE7_gc;

PORTA.DIR = (1 << 5);

PORTD.DIR = (1 << 5); //Sets Pin5 as an output

PORTD.DIR = (1 << 5);

PORTE.DIR = (1 << 5);

PORTF.DIR = (1 << 5);

//011 PULLUP Totempole Pull-up (on input) is what is set

//PORT A F D E 6 & 7 ENCODER PORTS

PORTA.PIN6CTRL = (0x30); //Sets Pullup on Input on pin 6

PORTA.PIN7CTRL = (0x30); //Sets Pullup on Input on pin 7

PORTF.PIN6CTRL = (0x30); //Sets Pullup on Input on pin 6

PORTF.PIN7CTRL = (0x30); //Sets Pullup on Input on pin 7

PORTD.PIN6CTRL = (0x30); //Sets Pullup on Input on pin 6

PORTD.PIN7CTRL = (0x30); //Sets Pullup on Input on pin 7

PORTE.PIN6CTRL = (0x30); //Sets Pullup on Input on pin 6

PORTE.PIN7CTRL = (0x30); //Sets Pullup on Input on pin 7

PORTA.OUT = (1<<5);

while(1){

if (PORTA.IN & (1<<6))

PORTA.OUT = (0x00);

else if (PORTD.IN & (1<<6))

PORTD.OUT = (0x00);

else if (PORTE.IN & (1<<6))

PORTE.OUT = (0x00);

else if (PORTF.IN & (1<<6))

PORTF.OUT = (0x00);

_delay_ms(10); //Cleans up the light coming back on

PORTA.OUT = (1 << 5);

PORTD.OUT = (1 << 5);

PORTE.OUT = (1 << 5);

PORTF.OUT = (1 << 5);

//_delay_ms(100);

//PORTA.OUT ^= PORTA.OUT;

//PORTD.OUT ^= PORTD.OUT;

//PORTE.OUT ^= PORTE.OUT;

//PORTF.OUT ^= PORTF.OUT;

//_delay_ms(100);

}

void Config32MHzClock(void)

{

CCP = CCP_IOREG_gc; //Security Signature to modify clock

// initialize clock source to be 32MHz internal oscillator (no PLL)

OSC.CTRL = OSC_RC32MEN_bm; // enable internal 32MHz oscillator

while(!(OSC.STATUS & OSC_RC32MRDY_bm)); // wait for oscillator ready

CCP = CCP_IOREG_gc; //Security Signature to modify clock

CLK.CTRL = 0x01; //select sysclock 32MHz osc

};

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