28027 spwm程序无法进入中断

pencent

28027 spwm程序无法进入中断 [复制链接]

问题如上spwm程序无法进入中断执行数组赋值导致出不来spwm
这是程序的仿真波形，不是swpm波，没进中断，各位大神帮忙看下啥问题，谢！

#include "DSP28x_Project.h"    // Device Headerfile and Examples Include File
#define uint unsigned int
void InitEPwm1(void);
void InitEPwm2(void);
void InitEPwm1Gpio(void);
void InitEPwm2Gpio(void);

interrupt void epwm1_timer_isr(void);

#define tablesize 200 //一个周期正弦表大小
uint Num=0;
//正弦表
const uint sinetable[tablesize]={
1462, 1415, 1369, 1322, 1276, 1230, 1184, 1138, 1093, 1048,
1004, 960, 917, 874, 832, 791, 750, 710, 671, 633,
595, 559, 523, 488, 455, 422, 391, 360, 331, 303,
276, 250, 226, 202, 181, 160, 141, 123, 106,    91,
   77,    65,    54,    44,    36,    30,    25,    21,    19,    18,
   19,    21,    25,    30,    36,    44,    54,    65,    77,    91,
106, 123, 141, 160, 181, 202, 226, 250, 276, 303,
331, 360, 391, 422, 455, 488, 523, 559, 595, 633,
671, 710, 750, 791, 832, 874, 917, 960, 1004, 1048,
1093, 1138, 1184, 1230, 1276, 1322, 1369, 1415, 1462, 1509,
1556, 1603, 1649, 1696, 1742, 1788, 1834, 1880, 1925, 1970,
2014, 2058, 2101, 2144, 2186, 2227, 2268, 2308, 2347, 2385,
2423, 2459, 2495, 2530, 2563, 2596, 2627, 2658, 2687, 2715,
2742, 2768, 2792, 2816, 2837, 2858, 2877, 2895, 2912, 2927,
2941, 2953, 2964, 2974, 2982, 2988, 2993, 2997, 2999, 3000,
2999, 2997, 2993, 2988, 2982, 2974, 2964, 2953, 2941, 2927,
2912, 2895, 2877, 2858, 2837, 2816, 2792, 2768, 2742, 2715,
2687, 2658, 2627, 2596, 2563, 2530, 2495, 2459, 2423, 2385,
2347, 2308, 2268, 2227, 2186, 2144, 2101, 2058, 2014, 1970,
1925, 1880, 1834, 1788, 1742, 1696, 1649, 1603, 1556, 1509
};

void main(void)
{
InitSysCtrl();//1、初始化系统
InitEPwm1Gpio();
InitEPwm2Gpio();

DINT;//Disable interrupt 清除所有中断，并禁用CPU中断
InitPieCtrl();//PIE初始化
IER = 0x0000;
IFR = 0x0000;//禁用CPU中断和清除所有CPU中断
InitPieVectTable();//PIE向量表初始化

EALLOW;//Edit allow
PieVectTable.EPWM1_INT = &epwm1_timer_isr;
EDIS; //Edit disable

InitEPwm1();
InitEPwm2();

IER |= M_INT3;
PieCtrlRegs.PIEIER3.bit.INTx1 = 1;// PWM1中断
EINT; // 启用全局中断INTM
ERTM;//使能做全局实时中断DBGM

for(;;)
   {
      __asm("NOP");
   }
}

interrupt void epwm1_timer_isr(void)
{

if(Num==tablesize)
Num=0;

EPwm1Regs.CMPA.half.CMPA=sinetable[Num];
      Num++;

EPwm1Regs.ETCLR.bit.INT = 1;
PieCtrlRegs.PIEACK.all = PIEACK_GROUP3;//写1清0
}

void InitEPwm1()
{
EPwm1Regs.TBPRD = 3000;                      // Set timer period
   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;          // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                   // Clear counter

   // Setup TBCLK
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;       // Disable phase loading
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;    // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;       // Slow just to observe on the scope

   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; // Load registers every ZERO
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO_PRD;
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO_PRD;
   // Setup compare
   EPwm1Regs.CMPA.half.CMPA = 800; //占空比设置为0，防止上电瞬间电压值达到最大

   // Set actions
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;          // Set PWM2A on Zero
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;

   // Interrupt where we will modify the deadband
   EPwm1Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO;    // Select INT on Zero event
   EPwm1Regs.ETSEL.bit.INTEN = 1;                // Enable INT
   EPwm1Regs.ETPS.bit.INTPRD = ET_1ST;          // Generate INT on 3rd event
}

void InitEPwm2()
{
//TBCLK=SYSCLKOUT/(HSPCLKDIV*CLKDIV)=(1/60M)/(1*1)
//Tpwm=2*TBPRD*T_TBCLK (For Updown mode)
//1/40K=2*TBPRD*(1/60M)==>TBPRD=750
   EPwm2Regs.TBPRD = 750;                      // Set timer period
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;          // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                   // Clear counter

   // Setup TBCLK
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count updown
   EPwm2Regs.TBCTL.bit.PHSEN = TB_DISABLE;       // Disable phase loading
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;    // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;

   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; // Load registers every ZERO
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;

   // Setup compare
   EPwm2Regs.CMPA.half.CMPA = 375;

   // Set actions
   EPwm2Regs.AQCTLA.bit.CAU = AQ_CLEAR;          // Set PWM1A on Zero
   EPwm2Regs.AQCTLA.bit.CAD = AQ_SET;

   // Interrupt where we will change the Deadband
   EPwm2Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO;    // Select INT on Zero event
   EPwm2Regs.ETSEL.bit.INTEN = 1;             // Enable INT
   EPwm2Regs.ETPS.bit.INTPRD = ET_3RD;          // Generate INT on 3rd event

}
void InitEPwm1Gpio(void)
{
EALLOW;

GpioCtrlRegs.GPAPUD.bit.GPIO0 = 1; // Disable pull-up on GPIO0 (EPWM1A)
GpioCtrlRegs.GPAPUD.bit.GPIO1 = 1; // Disable pull-up on GPIO1 (EPWM1B)

GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // Configure GPIO0 as EPWM1A
GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1; // Configure GPIO1 as EPWM1B

EDIS;
}

void InitEPwm2Gpio(void)
{
EALLOW;

GpioCtrlRegs.GPAPUD.bit.GPIO2 = 1; // Disable pull-up on GPIO2 (EPWM2A)
GpioCtrlRegs.GPAPUD.bit.GPIO3 = 1; // Disable pull-up on GPIO3 (EPWM2B)

GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1; // Configure GPIO2 as EPWM2A
GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1; // Configure GPIO3 as EPWM2B

EDIS;
}

pencent

怎么没人来，大神快来快来

elvike

确认一下epwm模块的时钟使能了没有，芯片复位之后默认是关闭的。然后对比一下TI的官方例程。

pencent

elvike 发表于 2017-2-27 20:19
确认一下epwm模块的时钟使能了没有，芯片复位之后默认是关闭的。然后对比一下TI的官方例程。

好的，谢

dontium

嗯，跟踪一下InitSysCtrl函数，看看时钟打开了没有。
在仿真时可以看到，如果时钟没有打开，相关的寄存器就没办法写入。

pencent

dontium 发表于 2017-2-27 22:56
嗯，跟踪一下InitSysCtrl函数，看看时钟打开了没有。
在仿真时可以看到，如果时钟没有打开，相关的寄存器 ...

哈哈哈，好的，终于等到你了，之前就看了好几个你的28027的帖子，我也一直怀疑是时钟的问题，其他的对了好几遍，谢谢大神

dontium

TI器件的PWM很容易掌握的。PWM的帖子我也写过一篇。

顺便说一下，28系列的CPU，内部已经固化了正弦波表。可以看看 BOOT ROM这篇文档。

zyzoops

dontium 发表于 2017-2-28 21:20
TI器件的PWM很容易掌握的。PWM的帖子我也写过一篇。

顺便说一下，28系列的CPU，内部已经固化了正弦波表 ...

版主老厉害了！！！！

YOYOHAO

你好，我想了解一下，你是用什么版本的proteus来做DSP的仿真，我也要使用proteus仿真DSP2407的电路，但是没有找到相应的元件，你有什么解决办法？谢谢

luntan8481