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本帖最后由 HelloWii 于 2015-9-21 08:51 编辑
实验一：流水灯 程序都是在AVR Studio上完成的
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实验二：键盘扫描
//----------------------------------------------------------------------- //说明;键盘扫描,,矩阵键盘 // // //------------------------------------------------------------------------ #define F_CPU 8000000 #include"avr/io.h" #include"util/delay.h" #include"avr/pgmspace.h" #define uchar unsigned char #define uint unsigned int #define DDRx_KEY DDRD #define PINx_KEY PIND #define PORTx_KEY PORTD uchar Get_Key()//有返回值的函数 { uchar temp=0,temp1,temp2; uchar KEY_Number; unsigned char i; DDRx_KEY =0x0F;//定义PD0-PD3为输入，PD4-PD7为输出 PORTx_KEY =0xF0;// asm("nop");// if((PINx_KEY&0xF0)!=0xF0) { _delay_ms(5); if((PINx_KEY&0xF0)!=0xF0) { for(i=0;i<4;i++) { temp1 =~(1< asm("nop");//一定得加!也可加小延时。 if((PINx_KEY & 0xF0)!=0xF0) { temp2=PINx_KEY; temp=(temp1 & 0x0F)+(temp2 & 0xF0); } } } } switch(temp) { case 0xEE: KEY_Number=0; break; case 0xDE: KEY_Number=1; break; case 0xBE: KEY_Number=2; break; case 0x7E: KEY_Number=3; break; case 0xED: KEY_Number=4; break; case 0xDD: KEY_Number=5; break; case 0xBD: KEY_Number=6; break; case 0x7D: KEY_Number=7; break; case 0xEB: KEY_Number=8; break; case 0xDB: KEY_Number=9; break; case 0xBB: KEY_Number=10; break; case 0x7B: KEY_Number=11; break; case 0xE7: KEY_Number=12; break; case 0xD7: KEY_Number=13; break; case 0xB7: KEY_Number=14; break; case 0x77: KEY_Number=15; break; default: KEY_Number=255; break; } return KEY_Number; } const prog_char SegCode[16]={ /* Cathode common Smg display code*/ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; uchar DisBuffer[8]={0,0,0,0,0,0,0,0}; void Scanf(void) { unsigned char i=0; for(i=0;i<8;i++) { PORTB = pgm_read_byte(&SegCode[DisBuffer[i]]); PORTA|= (1< PORTB = ~(1< _delay_ms(2); } } int main(void) { uchar KeyNumber=0; /* Set LED and Smg LE pin and USB-pull-up pin as output , databus as output */ DDRA |=(1< /* Off the LED display */ PORTB = 0xFF; PORTA|= (1< { KeyNumber=Get_Key();//Get_Key()是一个值 if(KeyNumber!=255) DisBuffer[7]=KeyNumber; Scanf(); } return 0; } |
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实验三：外部中断
#define F_CPU 8000000 #include "avr/io.h" #include "util/delay.h" #include "avr/pgmspace.h" #include "avr/interrupt.h" const prog_char SegCode[16]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; unsigned char DisBuffer[8]; volatile unsigned int Count=0; void delay_ms(unsigned int ms) { while(ms--) _delay_ms(1); } void Scanf(void) { unsigned char i=0; for(i=0;i<8;i++) { PORTB = pgm_read_byte(&SegCode[DisBuffer[i]]); PORTA|= (1< PORTB = ~(1< PORTA|= (1< _delay_ms(2); } } void IntInit(void) { PORTD|= (1< } int main(void) { /* Set LED and Smg LE pin as output , databus as output */ DDRA |=(1< /* Off the LED display */ PORTB = 0xFF; PORTA|= (1< IntInit(); while(1) { DisBuffer[0]=0; DisBuffer[1]=0; DisBuffer[2]=0; DisBuffer[3]=Count/10000%10; DisBuffer[4]=Count/1000%10; DisBuffer[5]=Count/100%10; DisBuffer[6]=Count/10%10; DisBuffer[7]=Count/1%10; Scanf(); } return 0; } SIGNAL(INT0_vect) { GIFR&=~(1< Count++; } } SIGNAL(INT1_vect) { GIFR&=~(1< Count--; } } |
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#include <ioavr.h>这个头文件我应该下什么编译器
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