DSP28335 新建工程步骤
新建工程：
1.路径，文件名不得包含中文。 2.拷贝文件夹：common,headers.
3.添加cmd文件：common/cmd/28335_RAM_link.cmd headers/cmd/DSP28335_Headers_nonBIOS.cmd
4.必须添加的8个Source文件: common/source/ADC_cal.asm /CodeStartBranch.asm /Defaultisr.c /PieCtrl.c /PieVect.c /SysCtrl.c /usDelay.asm
headers/source/GlobalVariadleDefs.c
5.其他的文件在common/source里按需添加 6.添加自己写的 .c 文件:放置在工程里 7.右击工程文件，点击Build options
设置两个地方：1.在Compiler下点击Advanced->将浮点型库支持选上（fpu32） 点击Preprocesso填写头文件路径：在Path(-i)下
写：..\\..\\DSP2833x_headers\\include;..\\..\\DSP2833x_common\\include 2.在link的basic下将Suppress Banner(-q)的复选框勾起 设置堆栈的大小:Stack Size(-heap)设置为0x200
的Libraries 下设置Search path(-i):..\\..\\DSP2833x_common\\include Inic Libraries: rts2800_fpu32.lib
DSP28335的 程序设计步骤
关于 DSP28335的初步应用：程序设计步骤
对DSP进行开发时，需要对其底层的硬件及外设进行相应的配置，当配置完成后才可以将其相应模块激活，才可以在其内部进行程序编写及调试处理。下面对程序配置及操作进行简单的整理，仅供参考。
第一步：初始化系统控制，PLL，看门狗，使能外设时钟等，一般调用函数InitSysCtrl()； 第二步：初始化GPIO，对于不同的硬件系统，进行不同的功能配置； 第三步：清除所有的中断并初始化PIE中断向量表 禁用CPU中断 DINT;
初始化PIE控制寄存器为默认状态 InitPieVectTable();
禁用CPU中断并清除所有的CPU中断标志 IER=0x0000; IFR=0x0000;
初始化PIE中断向量表 InitPieVectTable()； EALLOW;
XXX-------此处填写程序中需要的中断，将其映射到中断向量表中(如 Pie VectTable.SCIRXINTA=&sciaRxFifoIsr;) EDIS;
第四步：初始化所有外设(如果没有外设结构，此部分可省略)； 第五步：用户程序段，使能中断。
基于DSP28335的SPWM生成程序
#include \//#include \#include \
#define EPWM1_TIMER_TBPRD 3750 #define EPWM2_TIMER_TBPRD 3750 void InitEPwm1Example(void); void InitEPwm2Example(void); interrupt void epwm1_timer_isr(void); interrupt void epwm2_timer_isr(void); extern Uint32 k=0; extern Uint32
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void main(void) {
InitSysCtrl(); InitEPwm1Gpio(); InitEPwm2Gpio(); DINT; InitPieCtrl(); IER = 0x0000; IFR = 0x0000; InitPieVectTable(); EALLOW;
PieVectTable.EPWM1_INT = &epwm1_timer_isr; PieVectTable.EPWM2_INT = &epwm2_timer_isr; EDIS;
EALLOW;
SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0; EDIS; InitEPwm1Example(); InitEPwm2Example(); EALLOW;
SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1; EDIS;
IER |= M_INT3;
PieCtrlRegs.PIEIER3.bit.INTx1 = 1; PieCtrlRegs.PIEIER3.bit.INTx2 = 1; EINT; ERTM; for(;;) {
asm(\}
}
void InitEPwm1Example() {
EPwm1Regs.TBPRD = EPWM1_TIMER_TBPRD; EPwm1Regs.TBPHS.half.TBPHS = 0x0000; EPwm1Regs.TBCTR = 0x0000;
EPwm1Regs.CMPA.half.CMPA = 1500; EPwm1Regs.CMPB = 1500;
EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;
EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1; EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;
EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO_PRD; EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO_PRD;
EPwm1Regs.AQCTLA.bit.CAU = AQ_CLEAR; EPwm1Regs.AQCTLA.bit.CAD = AQ_SET; EPwm1Regs.AQCTLB.bit.CAU = AQ_SET; EPwm1Regs.AQCTLB.bit.CAD = AQ_CLEAR;
EPwm1Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO; EPwm1Regs.ETSEL.bit.INTEN = 1;
EPwm1Regs.ETPS.bit.INTPRD = ET_1ST; EPwm1Regs.DBCTL.all = 0xb; EPwm1Regs.DBRED = 60; EPwm1Regs.DBFED = 60; }
void InitEPwm2Example() {
EPwm2Regs.TBPRD = EPWM2_TIMER_TBPRD; EPwm2Regs.TBPHS.half.TBPHS = 0x0000; EPwm2Regs.TBCTR = 0x0000;
EPwm2Regs.CMPA.half.CMPA =1500; EPwm2Regs.CMPB = 1500;