DSP最小系統(tǒng)設計報告材料

1、實用標準文案DS暇小系統(tǒng)報告一.TMS320F281最小系統(tǒng)1.1 TMS320F2812 最小系統(tǒng)TMS320F2812勺最小系統(tǒng)如圖1-1所示.電路主要由 TMS320F2812K片、 30MHzt源晶振和電路電源以及電容、電阻電感等少量器件構成.另外,考慮到 DSPE下載時需要下載端口,所以在最小系統(tǒng)上加一個14腳的JTAG仿真燒寫口. 該最小系統(tǒng)不管是在仿真模式下還是在實時模式下,都能夠正常運行.一般來說, 在設計電源的而過程中,模擬地和數字地最后通過電感連接起來,電源和地通過電容連接起來.圖1-1 TMS320F2812最小系統(tǒng)二三=三二=三三三三E= _=三二二一三三二S1.2 電

2、源電路的設計TMS320X2812工作時所要求的電壓分為兩局部：3.3V的Flash電壓和1.8V 的內核電壓.TMS320X2812寸電源很敏感,所以在此推薦選擇電壓精度比擬高的 電源芯片TPS767D30恢者TPS767D318 TPS767D301K片的輸入電壓為+5V,芯 片起振,正常工作之后,能夠產生 3.3V和1.8V的兩種電壓供DSP®用.文檔實用標準文案GND圖1-2電源電路1.3 JTAG下載口電路及復位電路考慮到TPS767D301芯片能夠自身產生復位信號,此復位信號可直接供DSP芯片使用,所以不用為 DSP設置專門的復位芯片.復位芯片與 DSPE片 的連接如上電

3、路圖.而對于JTAG電路,在實際設計過程中,需要考慮到JTAG 下載口的抗干擾性,在與DSFffi連接的端口需要采用上拉設計,JTAG電路如 下列圖所示.XDD33R2210KR2R24C6110KIQOiiFR20DKilOB；B MLILTj46JTAG121110 g8CQN31 TRST 1：IE 11 TCKTo g 一mi 3VDD5GND圖1-3-1 JTAG下載口電路文檔實用標準文案隙VCC 33上GND VCC p PQ1TTC IRESETS 占丁 T1iiF |,圖1-3-2復位電路二.外設電路我設計的流水燈電路使用了 GPIOAC® GPIOA的五個端口,其中

4、GPIOACEJ GPIOA4勺5個IO 輸出連接LED的5個燈.最后的實驗結果：5個LED燈被循 環(huán)點亮.圖2-1 LED流水燈三.程序3.1 CMD文件MEMORY(PAGE C:PRAMHC : origin = Cx3f8CCC, length = CxCCICCCPAGE 1 :/* SARAM*/RAMMC : origin = CxCCCCCC, length = CxCCC4CCRAMM1 : origin = CxCCC4CC, length = CxCCC4CC/* Peripheral Frame C: */DEV_EMU : origin = CxCCC88C, len

5、gth = CxCCC18C文檔實用標準文案FLASH_REGS : origin = 0X000A80, length = 0x000060 CSM: origin = 0X000AE0, length = 0x000010XINTF: origin = 0X000B20, length = 0x000020CPU_TIMER0 : origin = 0x000C00, length = 0x000008 CPU_TIMER1 : origin = 0x000C08, length = 0x000008 CPU_TIMER2 : origin = 0x000C10, length = 0x0

6、00008 PIE_CTRL : origin = 0x000CE0, length = 0x000020 PIE_VECT : origin = 0x000D00, length = 0x000100/* Peripheral Frame 1: */ECAN_A : origin = 0x006000, length = 0x000100 ECAN_AMBOX : origin = 0x006100, length = 0x000100/* Peripheral Frame 2: */SYSTEM : origin = 0x007010, length = 0x000020 SPI_A: o

7、rigin = 0x007040, length = 0x000010SCI_A: origin = 0x007050, length = 0x000010XINTRUPT : origin = 0x007070, length = 0x000010 GPIOMUX : origin = 0x0070C0, length = 0x000020 GPIODAT : origin = 0x0070E0, length = 0x000020 ADC: origin = 0x007100, length = 0x000020EV_A: origin = 0x007400, length = 0x000

8、040EV_B: origin = 0x007500, length = 0x000040SPI_B: origin = 0x007740, length = 0x000010SCI_B: origin = 0x007750, length = 0x000010MCBSP_A : origin = 0x007800, length = 0x000040/* CSM Password Locations */CSM_PWL : origin = 0x3F7FF8, length = 0x000008/* SARAM*/DRAMH0 : origin = 0x3f9000, length = 0x

9、001000 )SECTIONS(/* Allocate program areas: */.reset : > PRAMH0, PAGE = 0.text: > PRAMH0,PAGE = 0.cinit: > PRAMH0,PAGE = 0/* Allocate data areas: */ .stack : > RAMM1, PAGE = 1文檔實用標準文案.bss : > DRAMH0, PAGE = 1.ebss: > DRAMH0,PAGE = 1.const: > DRAMH0,PAGE = 1.econst: > DRAMH0,P

10、AGE = 1.sysmem : > DRAMH0, PAGE = 1 /* Allocate Peripheral Frame 0 Register Structures: */ DevEmuRegsFile : > DEV_EMU, PAGE = 1 FlashRegsFile : > FLASH_REGS, PAGE = 1 CsmRegsFile : > CSM, PAGE = 1 XintfRegsFile : > XINTF, PAGE = 1 CpuTimer0RegsFile : > CPU_TIMER0, PAGE = 1 CpuTimer

11、1RegsFile : > CPU_TIMER1, PAGE = 1 CpuTimer2RegsFile : > CPU_TIMER2, PAGE = 1 PieCtrlRegsFile : > PIE_CTRL, PAGE = 1 PieVectTable : > PIE_VECT, PAGE = 1/* Allocate Peripheral Frame 2 Register Structures: */ ECanaRegsFile : > ECAN_A, PAGE = 1 ECanaMboxesFile : > ECAN_AMBOX PAGE = 1/

12、* Allocate Peripheral Frame 1 Register Structures: */ SysCtrlRegsFile : > SYSTEM, PAGE = 1 SpiaRegsFile: > SPI_A,PAGE = 1SciaRegsFile: > SCI_A,PAGE = 1XIntruptRegsFile : > XINTRUPT, PAGE = 1 GpioMuxRegsFile : > GPIOMUX, PAGE = 1 GpioDataRegsFile : > GPIODAT PAGE = 1 AdcRegsFile:>

13、;ADC,PAGE = 1EvaRegsFile:>EV_A,PAGE = 1EvbRegsFile:>EV_B,PAGE = 1ScibRegsFile:>SCI_B,PAGE = 1McbspaRegsFile : > MCBSP_A, PAGE = 1/* CSM Password Locations */CsmPwlFile : > CSM_PWL, PAGE = 13.2 系統(tǒng)初始化函數#include "DSP28_Device.h"/文檔實用標準文案/ InitSysCtrl:/ This function initializes

14、 the System Control registers to a known state./void InitSysCtrl(void)Uint16 i;EALLOW;SysCtrlRegs.WDCR = 0x0068; / 禁止看門狗模塊SysCtrlRegs.PLLCR = 0xA;for(i= 0; i< 5000; i+)/延時,使得PLL模塊能夠完成初始化操作/高速時鐘預定標器和低速時鐘預定標器,產生高速外設時鐘HSPCLK口低速外設時鐘LSPCLKSysCtrlRegs.HISPCP.all = 0x0001;SysCtrlRegs.LOSPCP.all = 0x0002

15、;EDIS;3.3 GPIO初始化函數/ TMDX ALPHA RELEASE/ Intended for product evaluation purposes/ / f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f

16、 f f f f f f f f f f f f f f f f f f f f f f f f f f u u tf u u tftf u u tf u TrTrTrTrTrTrTrTrTrTrTrTrmTTrTrTrTr u ittf u u tftf u u tf u u u u tttf u u tf u tttttt u u u u ttitu u tttttttt / / n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n

17、n n n n n n n n n n n n n n#/ FILE:DSP28_Gpio.c/ TITLE: DSP28General Purpose I/O Initialization & Support Functions./ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff

18、 ff ff ff ff ff ff ff u u tf u u tftf u u tf u TrTrTrTrTrTrTrTrTrTrTrTrmTTrTrTrTr u ittf u u tftf u u tf u u tt u u tttf u u tf u tttttt u u u u ttitu u tttttttt / / n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n#

19、/ Ver | dd mmm yyyy | Who | Description of changes/=|=|=|=/ 0.55| 06 May 2002 | L.H. | EzDSP Alpha Release文檔實用標準文案/ 0.56| 20 May 2002 | L.H. | No change/ 0.57| 27 May 2002 | L.H. | No change/ / f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f

20、f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f u u tf u u tftf u u tf u TrTrTrTrTrTrTrTrTrTrTrTrmTTrTrTrTr u ittf u u tftf u u tf u u u u tttf u u tf u tttttt u u u u ttitu u tttttttt /

21、 / n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n#include "DSP28_Device.h"/ / InitGpio:/ / This function initializes the Gpio to a known state./void InitGpio(void)EALLOW;GpioMuxRegs.GPAMUX.bit.PWM1GPIOA0

22、 = 0;GpioMuxRegs.GPADIR.bit.GPIOA0 = 1;GpioMuxRegs.GPAMUX.bit.PWM2GPIOA1 = 0;GpioMuxRegs.GPADIR.bit.GPIOA1= 1;GpioMuxRegs.GPAMUX.bit.PWM3GPIOA2= 0;GpioMuxRegs.GPADIR.bit.GPIOA2= 1;GpioMuxRegs.GPAMUX.bit.PWM4GPIOA3= 0;GpioMuxRegs.GPADIR.bit.GPIOA3= 1;GpioMuxRegs.GPAMUX.bit.PWM5GPIOA4= 0;GpioMuxRegs.G

23、PADIR.bit.GPIOA4= 1;EDIS;3.4主函數#include "DSP28_Device.h void main(void)int kk=0;InitSysCtrl(); / DINT;IER=Ox0000;/IFR=Ox0000;/InitPieCtrl(); / InitPieVectTable(); /InitGpio(); / while(1) 初始化系統(tǒng)函數禁止CPUfr斷去除CPU斷標志初始化PIE限制存放器初始化PIE中斷向量表初始化GPIO口文檔實用標準文案GpioDataRegs.GPACLEAR.bit.GPIOA0 = 1; /PWM1 引腳輸出低電平, LED1燈亮for(kk=0;kk<100;kk+)delay_loop();/延時保持GpioDataRegs.GPASET.bit.GPIOA0 = 1; /PWM1 引腳輸出高電平,LED1 燈滅延時保持for(kk=0;kk<100;kk+) delay_loop();/GpioDataRegs.GPACLEAR.bit.GPIOA1 = 1; /PWM2引腳輸出低電