DSP設(shè)計(jì)科學(xué)計(jì)算器實(shí)驗(yàn)報(bào)告(共7頁)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上基于DSP的科學(xué)型計(jì)算器設(shè)計(jì)一、題目要求：基于DSP F2812利用實(shí)驗(yàn)箱及軟件編程設(shè)計(jì)一款科學(xué)型計(jì)算器使其滿足如下功能：（1） 能夠?qū)崿F(xiàn)按鍵數(shù)值的識(shí)別，并在數(shù)碼管上顯示（2） 能夠進(jìn)行簡(jiǎn)單的加減運(yùn)算（3） 能夠進(jìn)行小數(shù)運(yùn)算二、思路設(shè)計(jì) 1、TMS320X2812實(shí)驗(yàn)箱資源功能簡(jiǎn)介：采用TMS320X2812片上的GPIOA及GPIOB作為IO口接受實(shí)驗(yàn)箱上的按鍵值進(jìn)行判斷。同時(shí)設(shè)置兩個(gè)IO口進(jìn)行循環(huán)0，1發(fā)送給row1,row2實(shí)現(xiàn)鍵盤掃描，從而實(shí)現(xiàn)識(shí)別k11k23的值。將箱上的k1k8，k11k23作為計(jì)算器鍵盤。k1k8為07，k11為8,k12為9，k13為清

2、零鍵，k21為“=”鍵，k22為+，k23為-。三、綜合設(shè)計(jì)的程序分析LED顯示過程循環(huán)掃描進(jìn)入模塊鍵值輸入 程序框圖#include "DSP28_Device.h"引腳定義：#define Key1GpioDataRegs.GPADAT.bit.GPIOA0 / 0#define Key2 GpioDataRegs.GPADAT.bit.GPIOA1 / 1#define Key3 GpioDataRegs.GPADAT.bit.GPIOA2 / 2#define Key4 GpioDataRegs.GPADAT.bit.GPIOA3 / 3 #define Key5

3、GpioDataRegs.GPADAT.bit.GPIOA4 / 4#define Key6 GpioDataRegs.GPADAT.bit.GPIOA5 / 5#define Key7 GpioDataRegs.GPADAT.bit.GPIOA8 / 6#define Key8 GpioDataRegs.GPADAT.bit.GPIOA9 / 7*/#define row1 GpioDataRegs.GPBDAT.bit.GPIOB0 /PWM7 #define col1 GpioDataRegs.GPBDAT.bit.GPIOB1 /PWM8 #define row2 GpioDataRe

4、gs.GPBDAT.bit.GPIOB2 /PWM9 #define col2 GpioDataRegs.GPBDAT.bit.GPIOB3 /PWM10#define col3 GpioDataRegs.GPBDAT.bit.GPIOB4 /PWM11 /*k1k8，k11k23作為計(jì)算器鍵盤。k1k8為07，k11為8,k12為9，k13為清零鍵，k21為“=”鍵，k22為+，k23為-#define Add 0x0A#define Sub 0x0B#define Clear 0x0C#define multi 0x04#define divi 0x08#define dot 0x0Dun

5、signed char ScanKey(void);int num(void);unsigned int Enter(void);int ifdot(void);/Relative to spi_receive,not use rightnowunsigned int Spi_VarRx100;unsigned int i,j,key;extern unsigned int Int_Flag;主函數(shù)如下：void main(void) unsigned int countnum,shownum, countnum1, countnum2,count=0,co,step=1,math=0;int

6、 noun=-1,dot1=0; countnum = 0;countnum1 = 0;countnum2 = 0;co=0; while(1) noun=num();/鍵值 key=ScanKey(); dot1=ifdot(); if(key!=0)noun=key; /輸入第一個(gè)數(shù) if(noun>=0&&noun<=9) if(dot1=0) if(step=1) if(count<4) count+; countnum1= noun+countnum1*10; else count=0;countnum1=0; countnum=countnum1;

7、 shownum = BIN2BCD(countnum); ShowBCD(shownum); else if(step=2) if(count<4) count+; countnum2= noun+countnum2*10; else count=0;countnum2=0; shownum = BIN2BCD(countnum2); ShowBCD(shownum); if(dot1=1) if(step=1) if(count<4) count+; countnum1= noun+countnum1*10; else count=0;countnum1=0; countnum

8、=countnum1; shownum = BIN2BCD(countnum); ShowBCD1(shownum); else if(step=2) if(count<4) count+; countnum2= noun+countnum2*10; else count=0;countnum2=0; shownum = BIN2BCD(countnum2); ShowBCD1(shownum); if(noun=Add) step=2;count=0; math=1; else if(noun=Sub) step=2;count=0; math=2; else if(noun=Clea

9、r) countnum=0;step=1; countnum1=0; countnum2=0; math=0; count=0; noun=-1; shownum = BIN2BCD(countnum); ShowBCD(shownum); else if(Enter()=1) switch (math) case 1:countnum=countnum1+countnum2;break; case 2:countnum=countnum1-countnum2;break; default:break; shownum = BIN2BCD(countnum); ShowBCD(shownum)

10、; math=0; countnum1=0;countnum2=0; step=1; /K11至K23的按鍵原理圖如下（鍵盤掃描）： "等于"按鍵分配函數(shù)如下：unsigned int Enter(void) unsigned int k11,k12,k13,k21,k22,k23; unsigned int c10,c20,c30,c21,c11,c31; k11=0;k12=0;k13=0;k21=0;k22=0;k23=0; GpioDataRegs.GPBDAT.bit.GPIOB2=1;/row2 GpioDataRegs.GPBDAT.bit.GPIOB0=0;

11、/row1 c10=col1; c20=col2;c30=col3; GpioDataRegs.GPBDAT.bit.GPIOB2=0;/row2 GpioDataRegs.GPBDAT.bit.GPIOB0=1;/row1 c11=col1; c21=col2;c31=col3; if(c11=0 & c10=1)k21=1; if(k21)return 1; else return 0; 分配加、減、清零及小數(shù)點(diǎn)的按鍵 ：unsigned char ScanKey(void) unsigned int k11,k12,k13,k21,k22,k23; unsigned int c1

12、0,c20,c30,c21,c11,c31; k11=0;k21=0;k12=0;k22=0;k21=0;k23=0;k13=0; GpioDataRegs.GPBDAT.bit.GPIOB2=1;/row2 GpioDataRegs.GPBDAT.bit.GPIOB0=0;/row1 c10=col1; c20=col2;c30=col3; GpioDataRegs.GPBDAT.bit.GPIOB2=0;/row2 GpioDataRegs.GPBDAT.bit.GPIOB0=1;/row1 c11=col1; c21=col2;c31=col3; if(c21=0 & c20=1

13、)k22 =1; if(c21=1 & c20=0)k12 =1; if(c31=0 & c30=1)k23 =1; if(c31=1 & c30=0)k13 =1; if(k22=1)KeyData=Add; else if(k23=1)KeyData=Sub; else if(k13=1)KeyData=Clear; else if(k12=1)KeyData=dot; else KeyData=0; return(KeyData); 分配07數(shù)字按鍵：int num(void) int x; unsigned int c10,c20,c30,k; unsigned

14、 int c11,c21,c31; unsigned int k11,k12,k13,k21,k22,k23; k11=0;k12=0;k13=0;k21=0;k22=0;k23=0; GpioDataRegs.GPBDAT.bit.GPIOB2=1;/row2 GpioDataRegs.GPBDAT.bit.GPIOB0=0;/row1 c10=col1; c20=col2;c30=col3; GpioDataRegs.GPBDAT.bit.GPIOB2=0;/row2 GpioDataRegs.GPBDAT.bit.GPIOB0=1;/row1 c11=col1; c21=col2;c31

15、=col3; if(c11=1 & c10=0)k11=1; if(Key1=0)x=0; else if(Key2=0)x=1; else if(Key3=0)x= 2; else if(Key4=0)x= 3; else if(Key5=0)x=4; else if(Key6=0)x=5; else if(Key7=0)x=6; else if(Key8=0)x=7; else if(k11)x=8; else x=-1; return x; 分配小數(shù)點(diǎn)按鍵：int ifdot(void) int x; unsigned int c10,c20,c30,k; unsigned int c11,c21,c31; unsigned int k11,k12,k13,k21,k22,k23; k11=0;k12=0;k13=0;k21=0;k22=0;k23=0; for(k=0;k<2;k+) GpioDataRegs.GPBDAT.bit.GPIOB2=1;/row2 Gpio