DSP實驗報告集合(程序)+心得體會 2.doc

三、實驗原理浮點數(shù)的表達和計算是進行數(shù)字信號處理的基本知識；產(chǎn)生正弦信號是數(shù)字信號處理中經(jīng)常用到的運算；C語言是現(xiàn)代數(shù)字信號處理表達的基礎語言和通用語言。寫實現(xiàn)程序時需要注意兩點：（1）浮點數(shù)的范圍及存儲格式；（2）DSP的C語言與ANSI C語言的區(qū)別。四、實驗步驟1.打開CCS 并熟悉其界面；2.在CCS環(huán)境中打開本實驗的工程（Example_base.pjt），編譯并重建 .out 輸出文件，然后通過仿真器把執(zhí)行代碼下載到DSP芯片中；3 把X0 , Y0 和Z0添加到Watch窗口中作為觀察對象（選中變量名，單擊鼠標右鍵，在彈出菜單中選擇“Add Watch Window”命令）；4 選擇view-graph-time/frequency。 設置對話框中的參數(shù): 其中“Start Address”設為“sin_value”，“Acquisition buffer size”和“Display Data size”都設為“100”，并且把“DSP Data Type”設為“32-bit floating point”， 設置好后觀察信號序列的波形（sin函數(shù)，如圖）；5 單擊運行；6 觀察三個變量從初始化到運算結(jié)束整個過程中的變化；觀察正弦波形從初始化到運算結(jié)束整個過程中的變化；7 修改輸入序列的長度或初始值，重復上述過程。五、實驗心得體會通過本次實驗，加深了我對DSP的認識，使我對DSP實驗的操作有了更進一步的理解?；菊莆樟薈CS實驗環(huán)境的使用，并能夠使用C語言進行簡單的DSP程序設計。從軟件的安裝到使用軟件進行程序設計與仿真，鍛煉了自己的動手能力，也遇到了不少的坎坷，例如芯片的選擇，不能因為麻煩而省略該步驟，否則將會運行出錯。附錄實驗程序：#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; /* 0.100 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);龍 巖 學 院實 驗 報 告班 級 07電本(1)班 學號 2007050344姓 名 楊寶輝 同組人 獨立 實驗日期 2010-5-20 室溫 大氣壓 成 績 數(shù)碼管控制實驗一、實驗目的1. 熟悉2812的指令系統(tǒng)；2.熟悉74HC573的使用方法。3.熟悉DSP的IO操作使用方法。二、實驗設備1.一臺裝有CCS2000軟件的計算機；2.插上2812主控板的DSP實驗箱；3.DSP硬件仿真器。三、實驗原理此模塊由數(shù)碼管和四個鎖存器組成 。數(shù)碼管為共陰極型的。數(shù)據(jù)由2812模塊的低八位輸入，鎖存器的控制信號由2812模塊輸出，但經(jīng)由CPLD模塊譯碼后再控制對應的八個四、實驗步驟1.把2812模塊小板插到大板上；2. 在CCS2000環(huán)境中打開本實驗的工程編譯Example_7segled.prj，生成輸出文件，通過仿真器把執(zhí)行代碼下載到DSP芯片；3. 運行程序;數(shù)碼管會顯示18的數(shù)字。 4. 參考源代碼自行修改程序改變顯示樣式。 五、實驗心得體會通過本次實驗中，基本掌握了2812的指令系統(tǒng)的特點，并能夠了解并熟悉74HC573的使用方法，進一步加深了對DSP的認識。同時，通過實驗操作DSP的IO操作使用方法，對于DSP的IO操作可以熟悉的運用，學到更多的知識。程序見附錄：#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);/ 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 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 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 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, 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_InitPeripherals.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.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 =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 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 select 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; / No more. 交通燈控制實驗一、實驗目的1.熟悉2812的指令系統(tǒng)；2.熟悉74HC573的使用方法。3.熟悉DSP的IO操作使用方法。二、實驗設備1.一臺裝有CCS2000軟件的計算機；2.插上2812主控板的DSP實驗箱；3.DSP硬件仿真器。三、實驗原理此模塊由發(fā)光二極管和一個鎖存器組成。數(shù)據(jù)由2812模塊的低八位輸入，鎖存器的控制信號由2812模塊輸出，但經(jīng)由CPLD模塊譯碼后再控制鎖存器。四、實驗步驟1. 把2812模塊小板插到大板上；2. 在CCS2000環(huán)境中打開本實驗的工程編譯Example_crossled.prj，生成輸出文件，通過仿真器把執(zhí)行代碼下載到DSP芯片；3. 運行程序，發(fā)光二極管按交通燈方式點亮熄滅。 4. 參考源代碼，自行修改程序，實現(xiàn)不同的交通燈控制方式。 五、實驗心得體會通過次實驗中，使我掌握了 2812的指令系統(tǒng)和74HC573的使用方法。同時，使我掌握了DSP的IO操作使用方法。實驗程序見附錄：附錄： #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);/ 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 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 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 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, 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_InitPeripherals.c/ InitPeripherals(); / Not required for this example InitXintf(); / For this example, init the Xintf/ Step 5. User specific 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,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=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 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; /=/ No more./=步進電機控制實驗一、實驗目的1. 掌握2812通用IO口的使用方法；2. 掌握2812對步進電機的控制。二、實驗設備.一臺裝有CCS軟件的計算機；.DSP實驗箱（插上電機模塊）；.DSP硬件仿真器；.示波器。三、實驗原理步進電機工作原理，給步進脈沖電機就轉(zhuǎn)，不給脈沖電機就不轉(zhuǎn)，步進脈沖的頻率越高，步進控制電機就轉(zhuǎn)的越快；改變各相的通電方式可以改變電機的運行方式；改變通電順序可以控制步進電機的運行方式；改變通電順序可以控制步進電機的正反轉(zhuǎn)。步進電機的控制問題可以總結(jié)為兩點：1. 產(chǎn)生工作方式需要的時序脈沖；2. 控制步進電機的速度使它始終遵循加速-勻速-減速的規(guī)律工作。對于I/O口有二類寄存器：1. 控制寄存器和數(shù)據(jù)方向寄存器，使用方法如下：首先確定引腳的功能，即IO控制器寄存器，為1表示引腳功能是原模塊的功能，否則為IO功能。2. 如果引腳被配置為IO功能，就需要確定它的方向：輸入還是輸出，。為1表示是輸出引腳，否則是輸入引腳。對于IO功能的輸入或輸出是通過讀寫相應的數(shù)據(jù)方向寄存器來實現(xiàn)。輸入引腳對應讀操作；輸出引腳對應寫操作。四、實驗步驟1. 連接好DSP開發(fā)系統(tǒng)；2. 本實驗工程文件（Example_stepmotor.pjt），編譯，下載程序到DSP；運行程序，用觀察步進電機運行方向和速度的變化；五、實驗心得體會通過本次實驗對于2812通用的IO口進一步熟悉實驗，使我基本掌握了2812通用的IO口的使用方法，加深了對IO口的認識。本次實驗的主要目的是通過2812對步進機的的控制，開始對于程序的設計沒有頭緒，通過查閱步進機控制的原理，結(jié)合有關資料才正式設計出程序，基本掌握了2812對步進機的控制，也更加熟悉了對DSP程序的設計，受益匪淺。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);/ 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 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 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 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, 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_InitPeripherals.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; 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;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 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 select 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; /=/ No more./=一、實驗目的1. 要求學生掌握2812 PWM的使用方法；2. 掌握2812對直流電機的控制。二、實驗設備.一臺裝有CCS軟件的計算機；.DSP實驗箱；.DSP硬件仿真器；.示波器。三、實驗原理電機模塊的原理圖如下四、實驗步驟3. 連接好DSP開發(fā)系統(tǒng)；4. 本實驗工程文件（Example_dcmotor.pjt），編譯，下載程序到DSP；5. 運行程序，用觀察直流電機運行方向和速度的變化；五、實驗心得體會通過本次實驗，認識了PWM的使用方法，通過親身體驗，初步掌握了2812對PWM的控制使用方法，加深了對PWM的認識。本次實驗的主要目的是通過2812對直流電機的控制，開始對于程序的設計沒有頭緒，通過查閱直流電機的原理，結(jié)合有關資料才正式設計出程序，基本掌握了2812對直流電機的控制，也更加熟悉了對DSP程序的設計，受益匪淺。附：實驗程序：#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);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: 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/ Initialize only GPAMUX and GPBMUX for this test EALLOW; / Enable PWM pins GpioMuxRegs.GPAMUX.all = 0x00FF; / 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 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, 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_InitPeripherals.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 = 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 enable / 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; / Setup 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 = 0