//?--------------------------------------
//?Function:?H4001?64位RFID只讀卡讀頭
//?MCU:???ATmega32
//?Crystal:?7.3728Mhz
//?Date:??2005/01/16
//?--------------------------------------
//?Compiler:
//?ICCAVR?6.28C6.31A
//?RFID基站芯片：U2270B?
//?--------------------------------------

#include?
#include?
//variable?definition
unsigned?char?timer_counterror=0post=0data1rxdatarun=0;
unsigned?char?decode[192]head=0rfiddata[54];
unsigned?int??tcomp=0;
unsigned?char?lastbit=0half=0;?
const?unsigned?char?ascii[16]=“0123456789ABCDEF“;
//pin?definition
#define?led（）?（PORTD^=0x80）
#define?RFW?（1<<6）????????????????????????
//RFW?RFID輸出載波控制
#define?RFW_1（）?（PORTC?|=RFW）??????????
#define?RFW_0（）?（PORTC?&=~RFW）
#define?beep?（1<<4）????????????????????????
#define?beep_1（）?（PORTC?|=beep）
#define?beep_0（）?（PORTC?&=~beep）
#define?okled?（1<<0）
#define?okled1（）?（PORTC?|=okled）
#define?okled0（）?（PORTC?&=~okled）
//RFID_IN?U2270B返回卡的未解調碼
#define?RFID_IN??（PINC&0x80）

void?port_init（void）
{
?PORTA?=?0xFF;
?DDRA??=?0x00;
?PORTB?=?0xFF;
?DDRB??=?0x00;
?PORTC?=?0xFF;?
?DDRC??=?0x51;
?PORTD?=?0x7F;
?DDRD??=?0x80;
}

//TIMER0?initialisation?-?prescale:1024
//?WGM:?Normal
//?desired?value:?10mSec
//?actual?value:??9.861mSec?（1.4%）
void?timer0_init（void）
{
?TCCR0?=?0x00;?//stop
?TCNT0?=?0xB9;?//set?count
?OCR0??=?0x47;??//set?compare
?TCCR0?=?0x05;?//start?timer
}

#pragma?interrupt_handler?timer0_ovf_isr:12
void?timer0_ovf_isr（void）
{
?????TCNT0?=?0xB9;?//reload?counter?value
?????timer_count++;
	?if?（timer_count>50）?{?????//?0.01*50=0.5sec每0.5秒掃描一次是否有ID卡
//??????led（）;
	????timer_count=0;
????????run=1;
????????}
}

//TIMER1?initialisation?-?prescale:1
//?WGM:?0）?Normal?TOP=0xFFFF
//?desired?value:?1Hz
//?actual?value:?Out?of?range
void?timer1_init（void）
{
?TCCR1B?=?0x00;?//stop
?TCNT1H?=?0x00?/*INVALID?SETTING*/;?//setup
?TCNT1L?=?0x00?/*INVALID?SETTING*/;
?OCR1AH?=?0x00?/*INVALID?SETTING*/;
?OCR1AL?=?0x00?/*INVALID?SETTING*/;
?OCR1BH?=?0x00?/*INVALID?SETTING*/;
?OCR1BL?=?0x00?/*INVALID?SETTING*/;
?ICR1H??=?0x00?/*INVALID?SETTING*/;
?ICR1L??=?0x00?/*INVALID?SETTING*/;
?TCCR1A?=?0x00;
?TCCR1B?=?0x01;?//start?Timer
}

//UART0?initialisation
//?desired?baud?rate:?9600
//?actual:?baud?rate:57600?（0.0%）
//?char?size:?8?bit
//?parity:?Disabled
void?uart0_init（void）?????????//Uart初始化???
{
?UCSRB?=?0x00;?//disable?while?setting?baud?rate
?UCSRA?=?0x00;
?UCSRC?=?0x06;
?UBRRL?=?0x07;?//set?baud?rate?lo9600=0x2F57600=0x07
?UBRRH?=?0x00;?//set?baud?rate?hi
?UCSRB?=?0x98;?
}

#pragma?interrupt_handler?uart0_rx_isr:14??
void?uart0_rx_isr（void）????????//接收中斷處理???????????
{
?//uart?has?received?a?character?in?UDR
???rxdata=UDR;
}


//call?this?routine?to?initialise?all?peripherals
void?init_devices（void）??????????????//初始化
{
?//stop?errant?interrupts?until?set?up
?CLI（）;?//disable?all?interrupts
?port_init（）;
?timer0_init（）;
?timer1_init（）;
?uart

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-03-10?16:38??U2270B?c語言開發解調源碼\
?????文件????????7328??2006-09-10?21:06??U2270B?c語言開發解調源碼\H4001.c
?????文件????????6852??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.cof
?????文件????????4405??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.dbg
?????文件??????????58??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.dp2
?????文件????????5662??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.hex
?????文件???????66975??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.lis
?????文件??????????10??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.lk
?????文件???????38712??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.lst
?????文件?????????502??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.mak
?????文件????????3434??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.mp
?????文件???????17924??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.o
?????文件?????????894??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.prj
?????文件???????27722??2006-09-10?21:07??U2270B?c語言開發解調源碼\H4001.s
?????文件??????????42??2006-09-10?21:05??U2270B?c語言開發解調源碼\H4001.src