#include <stdio.h>
#include <avr\io.h>
#define F_CPU 32000000
#include <util\delay.h>
void Config32MHzClock(void);
void UsartWriteChar(unsigned char data);
unsigned char UsartReadChar(void);
int main(void)
{
int data;
Config32MHzClock();
CLK.PSCTRL = 0x00;
PORTCFG.CLKEVOUT = PORTCFG_CLKOUT_PE7_gc;
PORTE.DIR = (1<<7);
PORTF.DIR |= (1<<3) | (1<<0);
PORTF.OUT |= (1<<3);
USARTF0.BAUDCTRLA = 207;
USARTF0.CTRLB = USART_TXEN_bm | USART_RXEN_bm;
PORTA.DIRSET=0b10000000;
while(1)
{
// data=UsartReadChar();
UsartWriteChar(data);
_delay_ms(100);
PORTA_OUTTGL=0b10000000;
};
};
void UsartWriteChar(unsigned char data)
{
USARTF0.DATA = 'a' ;
if(!(USARTF0.STATUS&USART_DREIF_bm))
while(!(USARTF0.STATUS & USART_TXCIF_bm));
USARTF0.STATUS |= USART_TXCIF_bm;
};
unsigned char UsartReadChar(void)
{
unsigned char ret;
while(!(USARTF0.STATUS&USART_RXCIF_bm));
return USARTF0.DATA;
};
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
};
دیدگاه