TMS320F28069: DSP28069上电时可正常运行，但是不能进入AD中断（PWM1触发），断电后快速重新上电，可正常进入AD中断；或者是软件/硬件复位后也可正常进入AD中断，请问是什么原因引起的

皮皮

Part Number: TMS320F28069
Other Parts Discussed in Thread: C2000WARE

AD部分配置

EALLOW;
SysCtrlRegs.PCLKCR0.bit.ADCENCLK = 1;
(*Device_cal)();
EDIS;


EALLOW;
AdcRegs.ADCCTL1.bit.ADCBGPWD = 1; // Power ADC BG
AdcRegs.ADCCTL1.bit.ADCREFPWD = 1; // Power reference
AdcRegs.ADCCTL1.bit.ADCPWDN = 1; // Power ADC
AdcRegs.ADCCTL1.bit.ADCENABLE = 1; // Enable ADC
AdcRegs.ADCCTL1.bit.ADCREFSEL = 0; // Select interal BG
AdcRegs.ADCCTL1.bit.INTPULSEPOS = 1; //One cycle prior to result
EDIS;



EALLOW;
AdcRegs.ADCSAMPLEMODE.bit.SIMULEN0 = 0; 
AdcRegs.ADCSOC0CTL.bit.TRIGSEL = 0x06; 
AdcRegs.ADCSOC0CTL.bit.CHSEL = CHSEL_ADCINA0; 
AdcRegs.ADCSOC0CTL.bit.ACQPS = 6; 
AdcRegs.ADCINTSOCSEL1.bit.SOC0 = 0;

PieCtrlRegs.PIEIER1.bit.INTx1 = 1; // Enable ADCINT1 in PIE group 10
PieVectTable.ADCINT1 = &ADCINT1_ISR;//SystemTick_ISR;
IER |= M_INT1;

2 年多前

0 Yale Li 李耀先 2 年多前

TI__Guru 65745 points

使用的是自己的板子吗？有在多少器件上发现这个问题？

不能进入AD中断的时候，相应的使能位及标志位等情况如何？

0 皮皮 2 年多前

Prodigy 30 points

使用的是自己的板子，总共四块板卡，三块有这个问题，另一块板卡是正常的。通过添加监测变量发现，上电时会进入一次AD中断，之后就不进去了，重启或者断电并快速上电后，也可正常进入AD中断，

下列代码中第一行是上电后只进一次AD中断的程序，将此行内容修改为第二行的代码后，即可正常进入AD中断。

// EPwm1Regs.ETSEL.bit.SOCBASEL = ET_CTRU_CMPB;
EPwm1Regs.ETSEL.bit.SOCBSEL = ET_CTR_ZERO;

同时发现，EPwm1Regs.CMPB的初始值为0，不知是否是因为这个原因引起的。

0 Yale Li 李耀先 2 年多前回复皮皮

TI__Guru 65745 points

看起来问题应该是与EPWM触发ADC的配置有关。

EPWM的计数模式是什么？CMPB配置的是多少？

注释掉的代码，配置的是计数器向上计数到CMPB时触发ADC。按照你的更改，把触发点设置到计数值等于0也是可以的，具体取决于你的设计。如果选择在CMPB触发的话，可以试着把CTR后面的U去掉，即触发时忽略计数方向。

0 皮皮 2 年多前回复 Yale Li 李耀先

Prodigy 30 points

以下为EPWM1的代码，向上计数，，CMPB初始化设置为1260，但主程序中是由变量赋值给CMPB，范围肯定是在1800之内，看配置的话应该没问题，所以很疑惑

EPwm1Regs.TBPRD = 1800;

EPwm1Regs.TBPHS.half.TBPHS = 0;

EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UP;//TB_COUNT_UPDOWN;
EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;
EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO;
EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1; // div 1

EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1; // div 1

//Clear Timer counter
EPwm1Regs.TBCTR = 0;

EPwm1Regs.TBCTL.bit.PHSDIR = TB_UP; //Count up after the synchronization event

//------------------------------Counter-Compare Submodule--------------------------------------------

EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // load on CTR=Zero
EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; // load on CTR=Zero

//Clear Compare Value
EPwm1Regs.CMPA.half.CMPA = 360;
EPwm1Regs.CMPB = 1260;

//------------------------------Action-Qualifier Submodule---------------------------------------------

EPwm1Regs.AQCTLA.bit.CAU = AQ_CLEAR;

EPwm1Regs.AQCTLA.bit.ZRO = AQ_SET;

EPwm1Regs.AQCTLB.bit.CBU = AQ_SET;

EPwm1Regs.AQCTLB.bit.CAU = AQ_CLEAR;
EPwm1Regs.AQSFRC.bit.RLDCSF = 3;

EPwm1Regs.AQCSFRC.bit.CSFA = AQ_CLEAR; //
EPwm1Regs.AQCSFRC.bit.CSFB = AQ_CLEAR; //

//------------------------------Dead-Band Submodule-------------------------------------------------
EPwm1Regs.DBCTL.bit.IN_MODE = DBB_ALL;
EPwm1Regs.DBCTL.bit.OUT_MODE = DB_DISABLE; // Enable Dead-band module
EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; // Active Hi complementary
EPwm1Regs.DBFED = 30; // 1us dead time
// EPwm1Regs.DBRED = DEAD_TIME; // 1us dead time

//------------------------------PWM-Chopper Control Submodule----------------------------------------

EPwm1Regs.PCCTL.bit.CHPEN = 0; //Disable Pwm Chopper Module

//------------------------------Event-Trigger Selection Submodule---------------------------------------
#if 1
//SOC Event Config
// EPwm1Regs.ETPS.bit.SOCAPRD = ET_1ST; //generate SOCA on first event
EPwm1Regs.ETPS.bit.SOCBPRD = ET_1ST; //generate SOCA on first event

EPwm1Regs.ETSEL.bit.SOCBEN = 1; //Enable SOCB

// EPwm1Regs.ETSEL.bit.SOCBASEL = ET_CTRU_CMPB; //SOCA on PRD event
EPwm1Regs.ETSEL.bit.SOCBSEL = ET_CTR_ZERO;

EPwm1Regs.ETSEL.bit.SOCAEN = 0; //Disable SOCA
#endif