实验报告集合（程序）心得体会

1、三、实验原理浮点数的表达和计算是进行数字信号处理的基本知识；产生正弦信号是数字信号处理中经常用到的运算；C语言是现代数字信号处理表达的基础语言和通用语言。写实现程序时需要注意两点：（1）浮点数的范围及存储格式；（2）DSP的C语言与ANSI C语言的区别。四、实验步骤1.打开CCS 并熟悉其界面；2.在CCS环境中打开本实验的工程（Example_base.pjt），编译并重建 .out 输出文件，然后通过仿真器把执行代码下载到DSP芯片中；3 把X0 , Y0 和Z0添加到Watch窗口中作为观察对象（选中变量名，单击鼠标右键，在弹出菜单中选择“Add Watch Window”命令）；4

2、选择view-graph-time/frequency。 设置对话框中的参数: 其中“Start Address”设为“sin_value”，“Acquisition buffer size”和“Display Data size”都设为“100”，并且把“DSP Data Type”设为“32-bit floating point”， 设置好后观察信号序列的波形（sin函数，如图）；5 单击运行；6 观察三个变量从初始化到运算结束整个过程中的变化；观察正弦波形从初始化到运算结束整个过程中的变化；7 修改输入序列的长度或初始值，重复上述过程。五、实验心得体会通过本次实验，加深了我对DSP的认识

3、，使我对DSP实验的操作有了更进一步的理解。基本掌握了CCS实验环境的使用，并能够使用C语言进行简单的DSP程序设计。从软件的安装到使用软件进行程序设计与仿真，锻炼了自己的动手能力，也遇到了不少的坎坷，例如芯片的选择，不能因为麻烦而省略该步骤，否则将会运行出错。附录实验程序：#include math.h#include stdio.h#define N 100#define pi 3.14159float sin_value100;float X0,Y0,Z0;void main(void) int i; for(i=0;iN;i+) sin_valuei=0; X0=0.5; /* 0.1

4、00 0000 0000 0000 */ Y0=0.5; /* 0.100 0000 0000 0000 */ Z0=X0*Y0; /* 00.01 0000 0000 0000 0000 0000 0000 0000 */ for(i=0;iN;i+) sin_valuei=100*(sin(2*pi*i/N);龙 岩 学 院实 验 报 告班 级 07电本(1)班 学号 姓 名 杨宝辉 同组人 独立 实验日期 2010-5-20 室温 大气压 成 绩 数码管控制实验一、实验目的1. 熟悉2812的指令系统；2.熟悉74HC573的使用方法。3.熟悉DSP的IO操作使用方法。二、实验设备1.一

5、台装有CCS2000软件的计算机；2.插上2812主控板的DSP实验箱；3.DSP硬件仿真器。三、实验原理此模块由数码管和四个锁存器组成 。数码管为共阴极型的。数据由2812模块的低八位输入，锁存器的控制信号由2812模块输出，但经由CPLD模块译码后再控制对应的八个四、实验步骤1.把2812模块小板插到大板上；2. 在CCS2000环境中打开本实验的工程编译Example_7segled.prj，生成输出文件，通过仿真器把执行代码下载到DSP芯片；3. 运行程序;数码管会显示18的数字。 4. 参考源代码自行修改程序改变显示样式。 五、实验心得体会通过本次实验中，基本掌握了2812的指令系统

6、的特点，并能够了解并熟悉74HC573的使用方法，进一步加深了对DSP的认识。同时，通过实验操作DSP的IO操作使用方法，对于DSP的IO操作可以熟悉的运用，学到更多的知识。程序见附录：#include include/DSP281x_Device.h / DSP281x Headerfile Include File#include include/DSP281x_Examples.h / DSP281x Examples Include File/ Prototype statements for functions found within this file.void delay_lo

7、op(void);void Gpio_select(void);/ Global variable for this exampleshort codetab17=0x4020,0x6cc0,0x5800,0x4840,0x6440,0xC040,0xC000,0x4cc0,0x4000,0x4040,0x4400,0xE000,0xD080,0xE800,0xD000,0xD400,0xffff;main() short i; / Step 1. Initialize System Control:/ PLL, WatchDog, enable Peripheral Clocks/ This

8、 example function is found in the DSP281x_SysCtrl.c file. InitSysCtrl(); / Specific clock setting for this example: EALLOW; EDIS;/ Step 2. Initalize GPIO: / This example function is found in the DSP281x_Gpio.c file and/ illustrates how to set the GPIO to its default state./ InitGpio(); / Skipped for

9、 this example/ For this example use the following configuration: Gpio_select();/ Step 3. Clear all interrupts and initialize PIE vector table:/ Disable CPU interrupts DINT;/ Initialize the PIE control registers to their default state./ The default state is all PIE interrupts disabled and flags/ are

10、cleared. / This function is found in the DSP281x_PieCtrl.c file. InitPieCtrl();/ Disable CPU interrupts and clear all CPU interrupt flags: IER = 0x0000; IFR = 0x0000;/ Initialize the PIE vector table with pointers to the shell Interrupt / Service Routines (ISR). / This will populate the entire table

11、, even if the interrupt/ is not used in this example. This is useful for debug purposes./ The shell ISR routines are found in DSP281x_DefaultIsr.c./ This function is found in DSP281x_PieVect.c. InitPieVectTable();/ Step 4. Initialize all the Device Peripherals:/ This function is found in DSP281x_Ini

12、tPeripherals.c/ InitPeripherals(); / Not required for this example InitXintf(); / For this example, init the Xintf/ Step 5. User specific code, enable interrupts: GpioDataRegs.GPADAT.all=0; Reg01=0x00; GpioDataRegs.GPADAT.all=0; Reg02=0x00; GpioDataRegs.GPADAT.all=0; Reg03=0x00; GpioDataRegs.GPADAT.

13、all=0; Reg04=0x00; while(1) for(i=0;i17;i+) GpioDataRegs.GPADAT.all =codetabi; Reg01=0x00; delay_loop(); for(i=0;i17;i+) GpioDataRegs.GPADAT.all =codetabi; Reg02=0x00; delay_loop(); for(i=0;i17;i+) GpioDataRegs.GPADAT.all =codetabi; Reg03=0x00; delay_loop(); for(i=0;i17;i+) GpioDataRegs.GPADAT.all =

14、codetabi; Reg04=0x00; delay_loop(); void delay_loop() short i,j; for (i = 0; i 32767; i+) for (j = 0; j 10; j+);void Gpio_select(void) Uint16 var1; Uint16 var2; Uint16 var3; var1= 0x0000;/ sets GPIO Muxs as I/Os var2= 0xFFFF;/ sets GPIO DIR as outputs var3= 0x0000;/ sets the Input qualifier values E

15、ALLOW;GpioMuxRegs.GPAMUX.all=var1; GpioMuxRegs.GPBMUX.all=var1; GpioMuxRegs.GPDMUX.all=var1; GpioMuxRegs.GPFMUX.all=var1; GpioMuxRegs.GPEMUX.all=var1; GpioMuxRegs.GPGMUX.all=var1; GpioMuxRegs.GPADIR.all=var2;/ GPIO PORTs as output GpioMuxRegs.GPBDIR.all=var2; / GPIO DIR select GPIOs as output GpioMu

16、xRegs.GPDDIR.all=var2; GpioMuxRegs.GPEDIR.all=var2; GpioMuxRegs.GPFDIR.all=var2; GpioMuxRegs.GPGDIR.all=var2; GpioMuxRegs.GPAQUAL.all=var3; / Set GPIO input qualifier values GpioMuxRegs.GPBQUAL.all=var3; GpioMuxRegs.GPDQUAL.all=var3; GpioMuxRegs.GPEQUAL.all=var3; EDIS; / No more. 交通灯控制实验一、实验目的1.熟悉28

17、12的指令系统；2.熟悉74HC573的使用方法。3.熟悉DSP的IO操作使用方法。二、实验设备1.一台装有CCS2000软件的计算机；2.插上2812主控板的DSP实验箱；3.DSP硬件仿真器。三、实验原理此模块由发光二极管和一个锁存器组成。数据由2812模块的低八位输入，锁存器的控制信号由2812模块输出，但经由CPLD模块译码后再控制锁存器。四、实验步骤1. 把2812模块小板插到大板上；2. 在CCS2000环境中打开本实验的工程编译Example_crossled.prj，生成输出文件，通过仿真器把执行代码下载到DSP芯片；3. 运行程序，发光二极管按交通灯方式点亮熄灭。 4. 参考

18、源代码，自行修改程序，实现不同的交通灯控制方式。 五、实验心得体会通过次实验中，使我掌握了 2812的指令系统和74HC573的使用方法。同时，使我掌握了DSP的IO操作使用方法。实验程序见附录：附录： #include include/DSP281x_Device.h / DSP281x Headerfile Include File#include include/DSP281x_Examples.h / DSP281x Examples Include File/ Prototype statements for functions found within this file.void

19、 delay_loop(void);void Gpio_select(void);/ Global variable for this examplemain() / Step 1. Initialize System Control:/ PLL, WatchDog, enable Peripheral Clocks/ This example function is found in the DSP281x_SysCtrl.c file. InitSysCtrl(); / Specific clock setting for this example: EALLOW; EDIS;/ Step

20、 2. Initalize GPIO: / This example function is found in the DSP281x_Gpio.c file and/ illustrates how to set the GPIO to its default state./ InitGpio(); / Skipped for this example / For this example use the following configuration: Gpio_select(); / Step 3. Clear all interrupts and initialize PIE vect

21、or table:/ Disable CPU interrupts DINT;/ Initialize the PIE control registers to their default state./ The default state is all PIE interrupts disabled and flags/ are cleared. / This function is found in the DSP281x_PieCtrl.c file. InitPieCtrl();/ Disable CPU interrupts and clear all CPU interrupt f

22、lags: IER = 0x0000; IFR = 0x0000;/ Initialize the PIE vector table with pointers to the shell Interrupt / Service Routines (ISR). / This will populate the entire table, even if the interrupt/ is not used in this example. This is useful for debug purposes./ The shell ISR routines are found in DSP281x

23、_DefaultIsr.c./ This function is found in DSP281x_PieVect.c. InitPieVectTable();/ Step 4. Initialize all the Device Peripherals:/ This function is found in DSP281x_InitPeripherals.c/ InitPeripherals(); / Not required for this example InitXintf(); / For this example, init the Xintf/ Step 5. User spec

24、ific code, enable interrupts: while(1) GpioDataRegs.GPADAT.all =0xdc80; Reg00=0x00; delay_loop(); GpioDataRegs.GPADAT.all =0xec40; Reg00=0x00; delay_loop(); GpioDataRegs.GPADAT.all =0xf0c0; Reg00=0x00; delay_loop(); GpioDataRegs.GPADAT.all =0xec40; Reg00=0x00; delay_loop(); void delay_loop() short i

25、,j; for (i = 0; i 32767; i+) for (j = 0; j 50; j+);void Gpio_select(void) Uint16 var1; Uint16 var2; Uint16 var3; var1= 0x0000;/ sets GPIO Muxs as I/Os var2= 0xFFFF;/ sets GPIO DIR as outputs var3= 0x0000;/ sets the Input qualifier values EALLOW; GpioMuxRegs.GPAMUX.all=var1; GpioMuxRegs.GPBMUX.all=va

26、r1; GpioMuxRegs.GPDMUX.all=var1; GpioMuxRegs.GPFMUX.all=var1; GpioMuxRegs.GPEMUX.all=var1; GpioMuxRegs.GPGMUX.all=var1; GpioMuxRegs.GPADIR.all=var2;/ GPIO PORTs as output GpioMuxRegs.GPBDIR.all=var2; / GPIO DIR select GPIOs as output GpioMuxRegs.GPDDIR.all=var2; GpioMuxRegs.GPEDIR.all=var2; GpioMuxR

27、egs.GPFDIR.all=var2; GpioMuxRegs.GPGDIR.all=var2; GpioMuxRegs.GPAQUAL.all=var3; / Set GPIO input qualifier values GpioMuxRegs.GPBQUAL.all=var3; GpioMuxRegs.GPDQUAL.all=var3; GpioMuxRegs.GPEQUAL.all=var3; EDIS; /=/ No more./=步进电机控制实验一、实验目的1. 掌握2812通用IO口的使用方法；2. 掌握2812对步进电机的控制。二、实验设备.一台装有CCS软件的计算机；.DS

28、P实验箱（插上电机模块）；.DSP硬件仿真器；.示波器。三、实验原理步进电机工作原理，给步进脉冲电机就转，不给脉冲电机就不转，步进脉冲的频率越高，步进控制电机就转的越快；改变各相的通电方式可以改变电机的运行方式；改变通电顺序可以控制步进电机的运行方式；改变通电顺序可以控制步进电机的正反转。步进电机的控制问题可以总结为两点：1. 产生工作方式需要的时序脉冲；2. 控制步进电机的速度使它始终遵循加速-匀速-减速的规律工作。对于I/O口有二类寄存器：1. 控制寄存器和数据方向寄存器，使用方法如下：首先确定引脚的功能，即IO控制器寄存器，为1表示引脚功能是原模块的功能，否则为IO功能。2. 如果引脚被

29、配置为IO功能，就需要确定它的方向：输入还是输出，。为1表示是输出引脚，否则是输入引脚。对于IO功能的输入或输出是通过读写相应的数据方向寄存器来实现。输入引脚对应读操作；输出引脚对应写操作。四、实验步骤1. 连接好DSP开发系统；2. 本实验工程文件（Example_stepmotor.pjt），编译，下载程序到DSP；运行程序，用观察步进电机运行方向和速度的变化；五、实验心得体会通过本次实验对于2812通用的IO口进一步熟悉实验，使我基本掌握了2812通用的IO口的使用方法，加深了对IO口的认识。本次实验的主要目的是通过2812对步进机的的控制，开始对于程序的设计没有头绪，通过查阅步进机控制

30、的原理，结合有关资料才正式设计出程序，基本掌握了2812对步进机的控制，也更加熟悉了对DSP程序的设计，受益匪浅。程序：#include include/DSP281x_Device.h / DSP281x Headerfile Include File#include include/DSP281x_Examples.h / DSP281x Examples Include File/ Prototype statements for functions found within this file.void delay_loop(void);void Gpio_select(void);/

31、 Global variable for this exampleshort codetab17=0x0001,0x0002,0x0004,0x0008,0x0008,0x0004,0x0002,0x0001,0x0001,0x0002,0x0004,0x0008,0x0001,0x0002,0x0004,0x0008,0x0000;main() short i,j; / Step 1. Initialize System Control:/ PLL, WatchDog, enable Peripheral Clocks/ This example function is found in t

32、he DSP281x_SysCtrl.c file. InitSysCtrl();/ Specific clock setting for this example: EALLOW; EDIS;/ Step 2. Initalize GPIO: / This example function is found in the DSP281x_Gpio.c file and/ illustrates how to set the GPIO to its default state./ InitGpio(); / Skipped for this example/ For this example

33、use the following configuration: Gpio_select();/ Step 3. Clear all interrupts and initialize PIE vector table:/ Disable CPU interrupts DINT;/ Initialize the PIE control registers to their default state./ The default state is all PIE interrupts disabled and flags/ are cleared. / This function is foun

34、d in the DSP281x_PieCtrl.c file. InitPieCtrl();/ Disable CPU interrupts and clear all CPU interrupt flags: IER = 0x0000; IFR = 0x0000;/ Initialize the PIE vector table with pointers to the shell Interrupt / Service Routines (ISR). / This will populate the entire table, even if the interrupt/ is not

35、used in this example. This is useful for debug purposes./ The shell ISR routines are found in DSP281x_DefaultIsr.c./ This function is found in DSP281x_PieVect.c. InitPieVectTable();/ Step 4. Initialize all the Device Peripherals:/ This function is found in DSP281x_InitPeripherals.c/ InitPeripherals(

36、); / Not required for this example InitXintf(); / For this example, init the Xintf/ Step 5. User specific code, enable interrupts: GpioDataRegs.GPADAT.all=0; Reg06=0x00; while(1) for(j=0;j400;j+) for(i=0;i4;i+) GpioDataRegs.GPADAT.all =codetabi; Reg06=0x00; delay_loop(); for(j=0;j400;j+) for(i=4;i8;

37、i+) GpioDataRegs.GPADAT.all =codetabi; Reg06=0x00; delay_loop(); void delay_loop() short i,j; for (i = 0; i 1000; i+) for (j = 0; j 10; j+);void Gpio_select(void) Uint16 var1; Uint16 var2; Uint16 var3; var1= 0x0000;/ sets GPIO Muxs as I/Os var2= 0xFFFF;/ sets GPIO DIR as outputs var3= 0x0000;/ sets

38、the Input qualifier values EALLOW; GpioMuxRegs.GPAMUX.all=var1; GpioMuxRegs.GPBMUX.all=var1; GpioMuxRegs.GPDMUX.all=var1; GpioMuxRegs.GPFMUX.all=var1; GpioMuxRegs.GPEMUX.all=var1; GpioMuxRegs.GPGMUX.all=var1;GpioMuxRegs.GPADIR.all=var2;/ GPIO PORTs as output GpioMuxRegs.GPBDIR.all=var2; / GPIO DIR s

39、elect GPIOs as output GpioMuxRegs.GPDDIR.all=var2; GpioMuxRegs.GPEDIR.all=var2; GpioMuxRegs.GPFDIR.all=var2; GpioMuxRegs.GPGDIR.all=var2; GpioMuxRegs.GPAQUAL.all=var3; / Set GPIO input qualifier values GpioMuxRegs.GPBQUAL.all=var3; GpioMuxRegs.GPDQUAL.all=var3; GpioMuxRegs.GPEQUAL.all=var3; EDIS; /=

40、/ No more./=一、实验目的1. 要求学生掌握2812 PWM的使用方法；2. 掌握2812对直流电机的控制。二、实验设备.一台装有CCS软件的计算机；.DSP实验箱；.DSP硬件仿真器；.示波器。三、实验原理电机模块的原理图如下四、实验步骤3. 连接好DSP开发系统；4. 本实验工程文件（Example_dcmotor.pjt），编译，下载程序到DSP；5. 运行程序，用观察直流电机运行方向和速度的变化；五、实验心得体会通过本次实验，认识了PWM的使用方法，通过亲身体验，初步掌握了2812对PWM的控制使用方法，加深了对PWM的认识。本次实验的主要目的是通过2812对直流电机的控制，

41、开始对于程序的设计没有头绪，通过查阅直流电机的原理，结合有关资料才正式设计出程序，基本掌握了2812对直流电机的控制，也更加熟悉了对DSP程序的设计，受益匪浅。附：实验程序：#include include/DSP281x_Device.h / DSP281x Headerfile Include File#include include/DSP281x_Examples.h / DSP281x Examples Include File/ Prototype statements for functions found within this file.void init_eva(void)

42、;void init_evb(void);void delay_loop();/ Global variable for this examplemain() unsigned short i;/ Step 1. Initialize System Control:/ PLL, WatchDog, enable Peripheral Clocks/ This example function is found in the DSP281x_SysCtrl.c file. InitSysCtrl();/ Specific clock setting for this example: EALLO

43、W; EDIS;/ Step 2. Initalize GPIO: / This example function is found in the DSP281x_Gpio.c file and/ illustrates how to set the GPIO to its default state./ InitGpio(); / Skipped for this example/ Initialize only GPAMUX and GPBMUX for this test EALLOW; / Enable PWM pins GpioMuxRegs.GPAMUX.all = 0x00FF;

44、 / EVA PWM 1-6 pins GpioMuxRegs.GPBMUX.all = 0x00FF; / EVB PWM 7-12 pins EDIS;/ Step 3. Clear all interrupts and initialize PIE vector table:/ Disable CPU interrupts DINT;/ Initialize the PIE control registers to their default state./ The default state is all PIE interrupts disabled and flags/ are c

45、leared. / This function is found in the DSP281x_PieCtrl.c file. InitPieCtrl();/ Disable CPU interrupts and clear all CPU interrupt flags: IER = 0x0000; IFR = 0x0000;/ Initialize the PIE vector table with pointers to the shell Interrupt / Service Routines (ISR). / This will populate the entire table,

46、 even if the interrupt/ is not used in this example. This is useful for debug purposes./ The shell ISR routines are found in DSP281x_DefaultIsr.c./ This function is found in DSP281x_PieVect.c. InitPieVectTable();/ Step 4. Initialize all the Device Peripherals:/ This function is found in DSP281x_Init

47、Peripherals.c/ InitPeripherals(); / Not required for this example InitXintf(); / For this example, init the Xintf/ Step 5. User specific code, enable interrupts: init_eva(); /init_evb(); while(1) for(i=0;i65535;i+=1000) Reg06=0; EvbRegs.CMPR6 = i; delay_loop(); void delay_loop() short i,j; for (i =

48、0; i 1000; i+) for (j = 0; j 10; j+);void init_eva()/ EVA Configure T1PWM, T2PWM, PWM1-PWM6 / Initalize the timers / Initalize EVA Timer1 EvaRegs.T1PR = 0xFFFF; / Timer1 period EvaRegs.T1CMPR = 0x3C00; / Timer1 compare EvaRegs.T1CNT = 0x0000; / Timer1 counter / TMODE = continuous up/down / Timer ena

49、ble / Timer compare enable EvaRegs.T1CON.all = 0x1042; / Initalize EVA Timer2 EvaRegs.T2PR = 0x0FFF; / Timer2 period EvaRegs.T2CMPR = 0x03C0; / Timer2 compare EvaRegs.T2CNT = 0x0000; / Timer2 counter / TMODE = continuous up/down / Timer enable / Timer compare enable EvaRegs.T2CON.all = 0x1042; / Set

50、up T1PWM and T2PWM / Drive T1/T2 PWM by compare logic EvaRegs.GPTCONA.bit.TCMPOE = 1; / Polarity of GP Timer 1 Compare = Active low EvaRegs.GPTCONA.bit.T1PIN = 1; / Polarity of GP Timer 2 Compare = Active high EvaRegs.GPTCONA.bit.T2PIN = 2; / Enable compare for PWM1-PWM6 /EvaRegs.CMPR1 = 0x0C00; /Eva