app.c

AVR单片机C语言程序设计实例精粹

//***************************************************************
// File Name : Gpio.c
// Author    : Steaven
// Created   : 2008-06-09
// Modified  : 
// Revision  : V0.0
//***************************************************************

#include "iom16v.h" 
#include "DataType.h"
#include "app.h"

//***************************************************************
// Function    : Hardware_Init
// Input       : none
// Output      : none
// Description : ATmega16 Hardware Initialization
//***************************************************************
void Hardware_Init(void)
{
    Gpio_Init();
    Timer0_Init();
    Timer1_Init();
}

//***************************************************************
// Function    : Gpio_Init
// Input       : none
// Output      : none
// Description : ATmega16 GPIO Initialization
//***************************************************************
void Gpio_Init(void)
{
    DDRA  = 0xFF; //端口A设置为输出
    PORTA = 0xFF; //初始化输出0
    DDRB  = 0xFF; //端口B设置为输出
    PORTB = 0x00; //初始化输出0
    DDRC  = 0xFF; //端口C设置为输出
    PORTC = 0x00; //初始化输出0
    DDRD  = 0xFF; //端口D设置为输出
    PORTD = 0x00; //初始化输出0
}

//***************************************************************
// Function    : Timer0_Init
// Input       : none
// Output      : none
// Description : ATmega16 Timer0 Initialization,10ms Interval
//***************************************************************
void Timer0_Init(void)
{
	TCCR0 = 0x0D;   //1024 division,8M/1024,CTC Mode
	TCNT0 = 0x00;   //Clear Counter
	OCR0  = 8;      //8 * 1024/8M = 1ms 
	TIMSK |= 0x02;  //Enable OCIE0
	TIFR  |= 0x02;  //Clear OCIF0
}

//***************************************************************
// Function    : Timer1_Init
// Input       : none
// Output      : none
// Description : ATmega16 Timer1 Initialization,1s Interval
//***************************************************************
void Timer1_Init(void)
{
	TCCR1A = 0x00;  //WGM1[3:0]=0100,OCR1A
    TCCR1B = 0x0D;  //1024 division,8M/1024,CTC Mode	
    TCNT1  = 0x00;  //Clear Counter
	OCR1A  = 7813;  //7813 * 1024/8M = 1s 
	TIMSK |= 0x10;  //Enable OCIE1A
	TIFR  |= 0x10;  //Clear OCIF1A
}

//***************************************************************
// Function    : Interrupt_Init
// Input       : none
// Output      : none
// Description : ATmega16 Interrupt Initialization
//***************************************************************
void Interrupt_Init(void)
{
	SREG |= 0x80;   //Enable Global Interrupt
}

//=========================END OF FILE=========================//