复件 init_8515.c

国内某测温系统信号处理处理板的代码

//ICC-AVR application builder : 2006-12-8 14:54:31
// Target : M8515
// Crystal: 7.3728Mhz

#include "config.h"

void port_init(void)
{
 PORTA = 0x00;
 DDRA  = 0xFF;
 PORTB = 0x00;
 DDRB  = 0x40;
 PORTC = 0x38;
 DDRC  = 0xFF;
 PORTD = 0x03;
 DDRD  = 0x00; 
 PORTE = 0x07;
 DDRE  = 0x00; 
}

//TIMER1 initialize - prescale:1024
// WGM: 0) Normal, TOP=0xFFFF
// desired value: 2Sec
// actual value:  2.000Sec (0.0%)
void timer1_init(void)
{
 TCCR1B = 0x00; //stop
 TCNT1H = 0xC7; //setup
 TCNT1L = 0xC1;
 OCR1AH = 0x38;
 OCR1AL = 0x3F;
 OCR1BH = 0x38;
 OCR1BL = 0x3F;
 TCCR1A = 0x00;
 //TCCR1B = 0x05; //start Timer
}


//UART0 initialize
// desired baud rate: 19200
// actual: baud rate:19200 (0.0%)
void uart0_init(void)
{
 UCSRB = 0x00; //disable while setting baud rate
 UCSRA = 0x00;
 UCSRC = BIT(URSEL) | 0x36;
 UBRRL = 0x17; //set baud rate lo
 UBRRH = 0x00; //set baud rate hi
 UCSRB = 0xD8;
}



//Comparator initialize
// trigger on: Rising output edge
void comparator_init(void)
{
 ACSR = ACSR & 0xF7; //ensure interrupt is off before changing
 ACSR = 0x0B;
}


//Watchdog initialize
// prescale: 2048K
//void watchdog_init(void)
//{
// WDR(); //this prevents a timout on enabling
// WDTCR = 0x18;
// WDTCR = 0x0F; //WATCHDOG ENABLED - dont forget WDR
//}