过滤噪声 MATLAB实验报告.docx

DSP硬件实验报告 姓名 刘晓松 学号 08210929 班内序号 04 班级 2008211202 专业 电子信息科学与技术一. 简介 DSP芯片是比较复杂的高速微处理器。要开发基于DSP芯片的应用系统，从系统方案设计到具体的工程实现，是一个比较困难的工作，周期长，工作量大，成本高。为了深入学习DSP基础理论，掌握采用DSP进行系统设计的一般知识，提高开发DSP应用系统的能力，对DSP有一个深入全面的了解。我们采用理工达盛开发的EL-DSP-II实验教学系统。二 ，各部分实验程序代码的注释Exp1;File Name:exp01.asm;the program is compiled at no autoinitialization mode.mmregs.global _main_main: stm#3000h,sp;为sp堆栈指针寄存器赋予初值ssbxxf ;重新置位为xf，灯call delay ;调用延迟函数rsbxxf ;重置call delay ;调用延迟函数b _main nopnop ;delay .5 second延迟函数delay: stm 270fh,ar3 指定ar3寄存器地址loop1: stm 0f9h,ar4 指定矮人寄存器地址loop2:banz loop2,*ar4- 条件转移，每次转移ar4地址减一banz loop1,*ar3- 条件转移，每次转移ar3地址减一retnopnop;stm2 cycles;banzwhen TRUE 4 cycles; FALSE 2 cycles;0f9h=249d;270fh=9999d.endEXP2*File Name:exp02.asm;get some knowledge of the cmd file;the program is compiled at no autoinitialization mode.mmregs.global _main _main: ;store datastm 1000h,ar1 ;address of internal memory 指定内部寄存器ar1的地址为1000h;stm 5000h,ar1 ;address of exterior memory 指定外部寄存器ar1的地址为5000hrpt#07h ;循环执行下一条指令，循环次数07hst0aaaah,*ar1+ ;将ar1所指的内存赋予0aaaah,然后ar1所指地址加1 ;read data then re-store stm 7h,ar3 指定ar3地址7h;stm 5000h,ar1 ;address of exterior memory 指定外部存储地址为5000h;stm 5008h,ar2 ;address of exterior memory 指定外部存储地址为5008hstm1000h,ar1 寻址找到要读取的数据地址1000h1008hstm 1008h,ar2loop:ld*ar1+,t 循环读取1000h1008hstt,*ar2+ 赋予5000h5008hbanzloop,*ar3-here: b here.endEXP3;File Name :exp03.asm;learn how to operate the I/O ports;get some knowledge of the rts.lib file;in the I/O space 0x0000=8 switches; 0x0001=8 LEDs.mmregs.global_main.text_main: stm3100h,sp ; 将3100h赋予spstm1000h,ar1 ;define the addressportr00h,*ar1 ；将0x0000的值赋予*ar1，即8个开关状态nop nopportw*ar1,01h ；将*ar1的值赋予0x0001的值。即8个led的状态nopnop b _main nop nop .endEXP4#include interrupt void timer();/*extern void time();*/extern void initial();extern void porta();extern void portb();int flag=0;interrupt void timer() 定时器中断函数*(int *)0x300=*(int *)0x300+1; 定时不断加1if(*(int *)0x300=0x3e8) ;当定时器数值达到0x3e8，开始定时器中断*(int *)0x300=0; 为定时器重新赋予初值*(int *)0x302=*(int *)0x302+1; if(flag=0) ;如果flag为0，则将其变为1，执行porta（）flag=1;porta();else ;如果flag为1，则将其变为1，执行portb（）flag=0;portb(); return; main() 主函数initial(); 初始化while(1); ; 无限循环INITIAL.ASM.mmregs.global _initial_initial:stm 300h,ar1 ;initial 300h data addressst #00h,*ar1 ;为内存300h的内容赋予00hstm 302h,ar1 ;initial 302h data addressst #00h,*ar1 ;为内存302h的内容赋予00hstm200h,ar1st#5555h,*ar1 ;为内存200h的内容赋予5555h（0101010101010101）stm201h,ar1st#0aaaah,*ar1 为内存201h的内容赋予0aaaah（1010101010101010）stm202h,ar1st#400h,*ar1 为内存202h的内容赋予400h（0000010000000000）ssbx1,11 ;set ST1.INTM=1,stop all interrrupt 停止所有的中断stm 0ffffh,ifr;clear all interrupt indicate 清除所有中断的标志位 ，中断标志寄存器（IFR）用来指明各个中断的目前状态。stm 00h,imr ;set imr=0,stop all interrrupt 停止所有的中断 中断屏蔽寄存器（IMR）在需要的时候独立地屏蔽特定的中断stm 410h,tcr;stop timer 停止定时器stm 4e1fh,prd;set prd=4e1fh 设置定时器， 定时器周期计数器stm 420h,tcr;start timer 打开定时器 定时器控制寄存器stm 08h,imr ;allow timer interrupt 允许定时器中断rsbx 1,11 ;set ST1.INTM=0,start all interrrupt 打开所有中断retPORT.ASM.mmregs.global_porta.global_portb_porta:stm304h,ar1 st5555h,*ar1 ; 将内存304h的内容赋予5555h（0101010101010101）portw*ar1,01h ;将内存304h的值写入01h端口ret_portb:stm304h,ar1st0aaaah,*ar1;将内存304h的内容赋予0aaaah（1010101010101010）portw*ar1,01h;将内存304h的值写入01端口retVECTOR.ASM 中断向量函数 .sect .vectors .ref _c_int00 ; C entry point .ref _timer ;time interrupt point .align 0x80 ; must be aligned on page boundaryRESET: ; reset vector BD _c_int00 ; branch to C entry point STM #200,SP ; stack size of 200nmi: RETE ; enable interrupts and return from one NOP NOP NOP ;NMI ; software interruptssint17 .space 4*16sint18 .space 4*16 中断向量表sint19 .space 4*16sint20 .space 4*16sint21 .space 4*16sint22 .space 4*16sint23 .space 4*16sint24 .space 4*16sint25 .space 4*16sint26 .space 4*16sint27 .space 4*16sint28 .space 4*16sint29 .space 4*16sint30 .space 4*16int0: RETE NOP NOP NOPint1: RETE NOP NOP NOPint2: RETE NOP NOP NOPtint: b _timer 启动定时器中断 NOP NOPrint0: RETE NOP NOP NOPxint0: RETE NOP NOP NOPrint1: RETE NOP NOP NOPxint1: RETE NOP NOP NOPint3: RETE NOP NOP NOP .end EXP5interrupt void int2c(); extern void initial();extern voidporta();extern void portb();int flag=0;main()initial(); 初始化while(1); 无限循环 interrupt void int2c() 外部中断函数 asm(nop); 不采取任何函数*(int *)0x300=*(int *)0x300+2;/*break here to show if interrupt happened*/这是一个记录外部中断的标志，通过记录0x300h中的值来记录if(flag=0)flag=1; 如果flag为0，则将其变为1，执行porta（）porta();elseflag=0; 如果flag为1，则将其变为1，执行portb（）portb();INITIAL.ASM.mmregs.global _initial .text _initial:stm 300h,ar3 ;initial data 300hst #00h,*ar3 为内存300h赋予00hstm 302h,ar4st #00h,*ar4 为内存302h赋予00hssbx1,11 ; set m=1 stop all interrupt 启动st1，停止所有中断stm 00h,imr;stop all interrupt 为imr寄存器赋予00h，停止所有中断stm 0ffffh,ifr;clear all interrupt sign 为ifr寄存器赋予0ffffh，清除所有中断stm 04h,imr;allow int2 interrupt 开启int2的外部中断rsbx 1,11 ;allow all interrupt 打开所有中断总开关ret .endPORT.ASM 端口函数.mmregs.global_porta.global_portb_porta:stm304h,ar1st5555h,*ar1 为内存304h赋予5555h（0101010101010101）portw*ar1,01h 将5555h赋予端口01hret_portb:stm304h,ar1st0aaaah,*ar1 为内存304h赋予0aaaah（1010101010101010）portw*ar1,01h 将aaaah赋予端口01hretVECTOR.ASM 中断向量表 .sect .vectors .ref _c_int00 ; C entry point .ref _int2c .align 0x80 ; must be aligned on page boundaryRESET: ; reset vector BD _c_int00 ; branch to C entry point STM #200,SP ; stack size of 200nmi: RETE ; enable interrupts and return from one NOP NOP NOP ;NMI ; software interruptssint17 .space 4*16sint18 .space 4*16sint19 .space 4*16 中断向量表sint20 .space 4*16sint21 .space 4*16sint22 .space 4*16sint23 .space 4*16sint24 .space 4*16sint25 .space 4*16sint26 .space 4*16sint27 .space 4*16sint28 .space 4*16sint29 .space 4*16sint30 .space 4*16int0: RETE NOP NOP NOPint1: RETE NOP NOP NOPint2: 启动int2 外部中断b _int2c NOP NOPtint: RETE NOP NOP NOPrint0: RETE NOP NOP NOPxint0: RETE NOP NOP NOPrint1: RETE NOP NOP NOPxint1: RETE NOP NOP NOPint3: RETE NOP NOP NOP EXP6 AD采样实验extern void InitC5402(void);extern void OpenMcBSP(void);extern void CloseMcBSP(void);extern void READAD50(void);/* Main Function Program*/void main(void)主函数InitC5402(); /* initialize C5402 DSP */ 初始化c5402OpenMcBSP(); 打开McBSP（）while (1) 无限循环READAD50(); /*mainloop */ 采样读取函数 /* End of File exp06.c*/.global _InitC5402 .global _OpenMcBSP.global _CloseMcBSP .global _READAD50 .global _WRITEAD50.include MMRegs.h_InitC5402:NOPLD #0, DP ; reset datapage pointeSTM #0, CLKMD ; software setting of DSP clock 软件设置DSP时钟STM #0, CLKMD ; (to divider mode before setting)STM #0x4007, CLKMD ; set C5402 DSP clock to 40MHz* STM #0x4007, CLKMD ; set C5402 DSP clock to 100MHz 设置时钟频率; (based on DSK crystal at 20MHz)* Configure C5402 System Registers *STM #0x2000, SWWSR ; 2 wait cycle for IO space &; 0 wait cycle for data&prog spaces (swwsr 外部总线S/W等待状态寄存器)STM #0x0000,BSCR ; set wait states for bank switch:; 64k mem bank, extra 0 cycle between ( bscr 外部总线块转换控制寄存器); consecutive prog/data readSTM #0x1800,ST0 ; ST0 at default setting 设置状态寄存器ST0,ST1STM #0x2900,ST1 ; ST1 at default setting(note:INTX=1)STM #0x00A0,PMST ; MC mode & OVLY=1, vectors at 0080h (PMST包括了存储器配置状态和控制信息)* Set up Timer Control Registers *STM #0x0010, TCR ; stop onchip timer0 设置timer0为主要的时钟寄存器;STM #0x0010, TCR1 ; stop onchip timer1; Timer0 is used as main loop timer;STM #2499, PRD ; timer0 rate=CPUCLK/1/(PRD+1) 定时器周期计数器; =40M/2500=16KHz* STM #6249, PRD ; if CPU at 100M/6250=16KHz * Initialize McBSP2 Registers *STM SPCR1, McBSP2_SPSA ; register subaddr of SPCR1 串口控制寄存器1置位0000hSTM #0000h, McBSP2_SPSD ; McBSP2 recv = leftjustify; RINT generated by frame syncSTM SPCR2, McBSP2_SPSA ; register subaddr for SPCR2 串口控制寄存器2置位0000h; XINT generated by frame syncSTM #0000h, McBSP2_SPSD ; McBSP2 Tx = FREE(clock stops; to run after SW breakpointSTM RCR1, McBSP2_SPSA ; register subaddr of RCR1 接收控制寄存器1置位0040hSTM #0040h, McBSP2_SPSD ; recv frame1 Dlength = 16 bitsSTM RCR2, McBSP2_SPSA ; register subaddr of RCR2 接收控制寄存器2置位0040hSTM #0040h, McBSP2_SPSD ; recv Phase = 1; ret frame2 Dlength = 16bitsSTM XCR1, McBSP2_SPSA ; register subaddr of XCR1 发送控制寄存器1置位0040hSTM #0040h, McBSP2_SPSD ; set the same as recvSTM XCR2, McBSP2_SPSA ; register subaddr of XCR2 发送控制寄存器2置位0040hSTM #0040h, McBSP2_SPSD ; set the same as recvSTM PCR, McBSP2_SPSA ; register subaddress of PCR 引脚控制寄存器置位000ehSTM #000eh, McBSP2_SPSD ; clk and frame from external (slave); FS at pulsemode(00)* Finish DSP Initialization * 完成初始化dspSTM #0x0000, IMR ; disable peripheral interrupts 禁止外部中断STM #0xFFFF, IFR ; clear the intrupts flags 重置中断标志位RET ; return to main 返回主函数NOPNOP * Waiting for McBSP0 RX Finished * 等待mcbsp0 接收采样数据完成IfRxRDY1:NOPSTM SPCR1, McBSP2_SPSA ; enable McBSP2 Rx 使能MCBSP2的接收LDM McBSP2_SPSD, AAND #0002h, A ; mask RRDY bit 标明RRDY的接收器的准备状态 复位BC IfRxRDY1, AEQ ; keep checking 如果RRDY为1，接收器准备就绪，可以采样接收数据NOPNOPRET ; returnNOPNOP* Waiting for McBSP0 TX Finished * 等待MCDSP0的TX完成IfTxRDY1:NOPSTM SPCR2, McBSP2_SPSA ; enable McBSP2 Tx 使能MCBSP2的发送LDM McBSP2_SPSD, AAND #0002h, A ; mask TRDY bit 标明TXDY，发送器的准备状态BC IfTxRDY1, AEQ ; keep checking 如果TXDY为1，发送器准备就绪，可以发送NOPNOPRET ; returnNOPNOP*_OpenMcBSP:rsbx xf ;状态寄存器重置call wait ; 转移到waitNOPSTM SPCR1, McBSP2_SPSA ; enable McBSP0 RX for ADC data in 使McBSP0 RX 接收AD采样数据LDM McBSP2_SPSD,AOR #0x0001, A ;接收控制寄存器 准备就绪STLM A, McBSP2_SPSD ;STM SPCR2, McBSP2_SPSA ; enable McBSP0 TX for DTMF out 允许McBSP0 发送DTMF到pcLDM McBSP2_SPSD,AOR #0x0001, A ;发送控制寄存器 准备就绪STLM A, McBSP2_SPSD ;LD #0h, DP ; load data page 0rpt #23 ;循环下一条指令 23次NOP ssbx xf;状态寄存器置位NOPNOP;CALL IfTxRDY1;STM #0x0101, McBSP2_DXR1;CALL IfTxRDY1;STM #0x0208, McBSP2_DXR1;rsbxxf; NOP;NOP CALL IfTxRDY1 ;转移到 IfTxRDY1STM #0x0001, McBSP2_DXR1;request secondary communication 要求第二次通信NOPCALL IfTxRDY1 STM #0100h, McBSP2_DXR1;write 00h to register 1 将00h写入mcbsp2的寄存器1CALL IfTxRDY1 ;发送数据STM #0000h, McBSP2_DXR1 ; 重置寄存器的数值NOPNOPrpt #20hnop CALL IfTxRDY1STM #0x0001, McBSP2_DXR1;request secondary communicationCALL IfTxRDY1 STM #0200h, McBSP2_DXR1;write 00h to register 2 将00h写入寄存器2CALL IfTxRDY1STM #0000h, McBSP2_DXR1 ;重置寄存器的数值 CALL IfTxRDY1STM #0x0001, McBSP2_DXR1;request secondary communicationCALL IfTxRDY1 STM #0300h, McBSP2_DXR1;write 00h to register 3 将00h写入寄存器3CALL IfTxRDY1STM #0000h, McBSP2_DXR1 ;重置寄存器的数值 CALL IfTxRDY1STM #0x0001, McBSP2_DXR1;request secondary communicationCALL IfTxRDY1 STM #0490h, McBSP2_DXR1;write 00h to register 4 将00h写入寄存器4 决定采样频率;bypass internal DPLL;and select the Sample Frequency CALL IfTxRDY1STM #0000h, McBSP2_DXR1 ;CALL IfTxRDY1;STM #0x0001, McBSP2_DXR1;CALL IfTxRDY1;STM #0102h, McBSP2_DXR1 ;enable digital loopback ;CALL IfTxRDY1;STM #0x0001, McBSP2_DXR1;CALL IfTxRDY1;STM #0208h, McBSP2_DXR1 ;enable analog loopbackRETNOPNOP *_CloseMcBSP:STM SPCR1, McBSP2_SPSA ; disable McBSP0 RXLDM McBSP2_SPSD,A; 把存储器映射寄存器值装入到累加器中AND #0xFFFE, ASTLM A, McBSP2_SPSD ;把累加器的低端存放到存储器中 即把mcbsp2_SPSD置为00000001STM SPCR2, McBSP2_SPSA ; disable McBSP0 TXLDM McBSP2_SPSD,AAND #0xFFFE, ASTLM A, McBSP2_SPSDRPT #5 ;循环执行下一条语句，循环次数为5次RETNOP ;不做任何操作NOP_READAD50: ;AD采样数据stm0x00ff,ar3 ;指定循环次数，即采样数据的长度 所存放的地址stm0x1000,ar2 ;指定所采样数据的存放地址loopa:CALL IfRxRDY1ldm McBSP2_DRR1,b ;将采样数据赋予bstl b,*ar2+ ;将b传送到*ar中，ar地址加一 banz loopa,*ar3- ;循环直到采样结束 nopnop retnopnop_WRITEAD50: ;写入数据 stm0x037b,ar3 ;指定循环次数，即采样数据的长度 所存放的地址stm0x38a3,ar2 ;指定所采样数据的存放地址loopb:CALL IfTxRDY1 ;判断是否可以与pc通信ldu*ar2+,B ;把B存储到累加器中，ar2地址自动加1and #0fffeh,b ;mask the LSBstlm B, McBSP2_DXR1 ;把B存入存储器映射寄存器中banzloopb,*ar3- ;（ar3中的地址，每循环一次减1，不为0时）的转移到loopbnopnopretnopnop wait: ;等待延迟函数stm 20h,ar3loop1: stm 020h,ar4loop2:banz loop2,*ar4-banz loop1,*ar3-ret nopnopnopnop.end* End of File InitC5402.asm*EXP7/*you must load the data file wave.dat before your running the program!*/extern void InitC5402(void);extern void OpenMcBSP(void);extern void CloseMcBSP(void);extern void WRITEAD50(void);/* Main Function Program*/void main(void) InitC5402(); /* initialize C5402 DSP */ 初始化C5402OpenMcBSP(); 打开McBSPwhile (1) 无限循环WRITEAD50(); /* mainloop */ DA转换过程函数 /* End of File exp07.c*/.global _InitC5402 .global _OpenMcBSP.global _CloseMcBSP .global _READAD50 .global _WRITEAD50.include MMRegs.h_InitC5402:NOPLD #0, DP ; reset datapage pointeSTM #0, CLKMD ; software setting of DSP clock 软件设置DSP时钟STM #0, CLKMD ; (to divider mode before setting)STM #0x4007, CLKMD ; set C5402 DSP clock to 40MHz* STM #0x4007, CLKMD ; set C5402 DSP clock to 100MHz 设置时钟频率; (based on DSK crystal at 20MHz)* Configure C5402 System Registers *STM #0x2000, SWWSR ; 2 wait cycle for IO space &; 0 wait cycle for data&prog spaces (swwsr 外部总线S/W等待状态寄存器)STM #0x0000,BSCR ; set wait states for bank switch:; 64k mem bank, extra 0 cycle between ( bscr 外部总线块转换控制寄存器); consecutive prog/data readSTM #0x1800,ST0 ; ST0 at default setting 设置状态寄存器ST0,ST1STM #0x2900,ST1 ; ST1 at default setting(note:INTX=1)STM #0x00A0,PMST ; MC mode & OVLY=1, vectors at 0080h (PMST包括了存储器配置状态和控制信息)* Set up Timer Control Registers *STM #0x0010, TCR ; stop onchip timer0 设置timer0为主要的时钟寄存器;STM #0x0010, TCR1 ; stop onchip timer1; Timer0 is used as main loop timer;STM #2499, PRD ; timer0 rate=CPUCLK/1/(PRD+1) 定时器周期计数器; =40M/2500=16KHz* STM #6249, PRD ; if CPU at 100M/6250=16KHz * Initialize McBSP2 Registers *STM SPCR1, McBSP2_SPSA ; register subaddr of SPCR1 串口控制寄存器1置位0000hSTM #0000h, McBSP2_SPSD ; McBSP2 recv = leftjustify; RINT generated by frame syncSTM SPCR2, McBSP2_SPSA ; register subaddr for SPCR2 串口控制寄存器2置位0000h; XINT generated by frame syncSTM #0000h, McBSP2_SPSD ; McBSP2 Tx = FREE(clock stops; to run after SW breakpointSTM RCR1, McBSP2_SPSA ; registe