当有EPWM中断时，ECAP 中断无法进入

我尝试利用ECAP抓取几个脉冲，中断后修改PWM信号的占空比。但是一直不成功。我PWM发生是参考例程“Example_2802xEPwmUpDownAQ”，这里面有3个中断。可以利用外部按键产生中断，然后占空比成功改变。我ECAP抓取参考的例程“Example_2802xECap_Capture_Pwm”。但是当我吧ECAP中断加入到第一个程序中后，一直进入不了中断。按键依旧可以控制PWM，但是就是ECAP中断进入不了。我也尝试修改了这些中断的优先级，参考的是例程“Example_2802xSWPrioritizedInterrupts”，还是不成功。当这四个中断在一起时，总也无法触发ECAP中断。

请问我的问题出在了哪里？谢谢帮助

我的配置程序如下：

#define ISRS_GROUP3  (M_INT1|M_INT2|M_INT3|M_INT4)
#define ISRS_GROUP4  (M_INT1|M_INT3|M_INT4)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 f2802x_DefaultIsr.c.
// This function is found in f2802x_PieVect.c.InitPieVectTable();

// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.EALLOW;  // This is needed to write to EALLOW protected registersPieVectTable.EPWM1_INT = &epwm1_isr;PieVectTable.EPWM2_INT = &epwm2_isr;PieVectTable.EPWM3_INT = &epwm3_isr;PieVectTable.ECAP1_INT = &ecap1_isr;EDIS;// This is needed to disable write to EALLOW protected registers



// Step 4. Initialize all the Device Peripherals:
// This function is found in f2802x_InitPeripherals.c
// InitPeripherals();  // Not required for this example

// For this example, only initialize the ePWMEALLOW;SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;EDIS;InitEPwm1Example();InitEPwm2Example();InitEPwm3Example();InitECapture();EALLOW;SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;EDIS;

// Step 5. User specific code, enable interrupts:


// Copy time critical code and Flash setup code to RAM
// This includes the following ISR functions: EPwm1_timer_isr(), EPwm2_timer_isr()
// EPwm3_timer_isr and and InitFlash();
// The  RamfuncsLoadStart, RamfuncsLoadEnd, and RamfuncsRunStart
// symbols are created by the linker.memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

// Call Flash Initialization to setup flash waitstates
// This function must reside in RAMInitFlash();


// Enable CPU INT3 which is connected to EPWM1-3 INT:ECap1IntCount = 0;ECap1PassCount = 0;PieCtrlRegs.PIECTRL.bit.ENPIE = 1;PieCtrlRegs.PIEIER3.bit.INTx1 = 1;PieCtrlRegs.PIEIER3.bit.INTx2 = 1;PieCtrlRegs.PIEIER3.bit.INTx3 = 1;PieCtrlRegs.PIEIER4.bit.INTx1 = 1;

//PieCtrlRegs.PIEIER3.all = 0x00FF;
//PieCtrlRegs.PIEIER4.all = 0x00FF;PieCtrlRegs.PIEACK.all = (M_INT3|M_INT4);IER |= (M_INT3|M_INT4);

//PieCtrlRegs.PIEIFR3.all = ISRS_GROUP3;
//PieCtrlRegs.PIEIFR4.all = ISRS_GROUP4;

// Enable global Interrupts and higher priority real-time debug events:EINT;// Enable Global interrupt INTMERTM;// Enable Global realtime interrupt DBGM

ECAP 初始化程序如下

void InitECapture()
{ECap1Regs.ECEINT.all = 0x0000;// Disable all capture interruptsECap1Regs.ECCLR.all = 0xFFFF;// Clear all CAP interrupt flagsECap1Regs.ECCTL1.bit.CAPLDEN = 0;// Disable CAP1-CAP4 register loadsECap1Regs.ECCTL2.bit.TSCTRSTOP = 0;// Make sure the counter is stopped// Configure peripheral registersECap1Regs.ECCTL2.bit.CONT_ONESHT = 1;// One-shotECap1Regs.ECCTL2.bit.STOP_WRAP = 3;// Stop at 4 eventsECap1Regs.ECCTL1.bit.CAP1POL = 1;// Falling edgeECap1Regs.ECCTL1.bit.CAP2POL = 0;// Rising edgeECap1Regs.ECCTL1.bit.CAP3POL = 1;// Falling edgeECap1Regs.ECCTL1.bit.CAP4POL = 0;// Rising edgeECap1Regs.ECCTL1.bit.CTRRST1 = 1;// Difference operationECap1Regs.ECCTL1.bit.CTRRST2 = 1;// Difference operationECap1Regs.ECCTL1.bit.CTRRST3 = 1;// Difference operationECap1Regs.ECCTL1.bit.CTRRST4 = 1;// Difference operationECap1Regs.ECCTL2.bit.SYNCI_EN = 0;// Enable sync inECap1Regs.ECCTL2.bit.SYNCO_SEL = 0;// Pass throughECap1Regs.ECCTL1.bit.CAPLDEN = 1;// Enable capture unitsECap1Regs.ECCTL2.bit.TSCTRSTOP = 1;// Start CounterECap1Regs.ECCTL2.bit.REARM = 1;// arm one-shotECap1Regs.ECCTL1.bit.CAPLDEN = 1;// Enable CAP1-CAP4 register loadsECap1Regs.ECEINT.bit.CEVT4 = 1;// 4 events = interrupt
}

4个中断程序如下：

__interrupt void epwm1_isr(void){my code}

__interrupt void epwm2_isr(void){my code}

__interrupt void epwm3_isr(void){my code}

__interrupt void ecap1_isr(void){my code}

ChuShan Zhang：

同问，最后解决了吗？我用ecap中断测速，用ewpm中断进行转速电流双闭环控制，碰到了一样的情况，进不去ecap中断

我尝试利用ECAP抓取几个脉冲，中断后修改PWM信号的占空比。但是一直不成功。我PWM发生是参考例程“Example_2802xEPwmUpDownAQ”，这里面有3个中断。可以利用外部按键产生中断，然后占空比成功改变。我ECAP抓取参考的例程“Example_2802xECap_Capture_Pwm”。但是当我吧ECAP中断加入到第一个程序中后，一直进入不了中断。按键依旧可以控制PWM，但是就是ECAP中断进入不了。我也尝试修改了这些中断的优先级，参考的是例程“Example_2802xSWPrioritizedInterrupts”，还是不成功。当这四个中断在一起时，总也无法触发ECAP中断。

请问我的问题出在了哪里？谢谢帮助

我的配置程序如下：

#define ISRS_GROUP3  (M_INT1|M_INT2|M_INT3|M_INT4)
#define ISRS_GROUP4  (M_INT1|M_INT3|M_INT4)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 f2802x_DefaultIsr.c.
// This function is found in f2802x_PieVect.c.InitPieVectTable();

// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.EALLOW;  // This is needed to write to EALLOW protected registersPieVectTable.EPWM1_INT = &epwm1_isr;PieVectTable.EPWM2_INT = &epwm2_isr;PieVectTable.EPWM3_INT = &epwm3_isr;PieVectTable.ECAP1_INT = &ecap1_isr;EDIS;// This is needed to disable write to EALLOW protected registers



// Step 4. Initialize all the Device Peripherals:
// This function is found in f2802x_InitPeripherals.c
// InitPeripherals();  // Not required for this example

// For this example, only initialize the ePWMEALLOW;SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;EDIS;InitEPwm1Example();InitEPwm2Example();InitEPwm3Example();InitECapture();EALLOW;SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;EDIS;

// Step 5. User specific code, enable interrupts:


// Copy time critical code and Flash setup code to RAM
// This includes the following ISR functions: EPwm1_timer_isr(), EPwm2_timer_isr()
// EPwm3_timer_isr and and InitFlash();
// The  RamfuncsLoadStart, RamfuncsLoadEnd, and RamfuncsRunStart
// symbols are created by the linker.memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

// Call Flash Initialization to setup flash waitstates
// This function must reside in RAMInitFlash();


// Enable CPU INT3 which is connected to EPWM1-3 INT:ECap1IntCount = 0;ECap1PassCount = 0;PieCtrlRegs.PIECTRL.bit.ENPIE = 1;PieCtrlRegs.PIEIER3.bit.INTx1 = 1;PieCtrlRegs.PIEIER3.bit.INTx2 = 1;PieCtrlRegs.PIEIER3.bit.INTx3 = 1;PieCtrlRegs.PIEIER4.bit.INTx1 = 1;

//PieCtrlRegs.PIEIER3.all = 0x00FF;
//PieCtrlRegs.PIEIER4.all = 0x00FF;PieCtrlRegs.PIEACK.all = (M_INT3|M_INT4);IER |= (M_INT3|M_INT4);

//PieCtrlRegs.PIEIFR3.all = ISRS_GROUP3;
//PieCtrlRegs.PIEIFR4.all = ISRS_GROUP4;

// Enable global Interrupts and higher priority real-time debug events:EINT;// Enable Global interrupt INTMERTM;// Enable Global realtime interrupt DBGM

ECAP 初始化程序如下

void InitECapture()
{ECap1Regs.ECEINT.all = 0x0000;// Disable all capture interruptsECap1Regs.ECCLR.all = 0xFFFF;// Clear all CAP interrupt flagsECap1Regs.ECCTL1.bit.CAPLDEN = 0;// Disable CAP1-CAP4 register loadsECap1Regs.ECCTL2.bit.TSCTRSTOP = 0;// Make sure the counter is stopped// Configure peripheral registersECap1Regs.ECCTL2.bit.CONT_ONESHT = 1;// One-shotECap1Regs.ECCTL2.bit.STOP_WRAP = 3;// Stop at 4 eventsECap1Regs.ECCTL1.bit.CAP1POL = 1;// Falling edgeECap1Regs.ECCTL1.bit.CAP2POL = 0;// Rising edgeECap1Regs.ECCTL1.bit.CAP3POL = 1;// Falling edgeECap1Regs.ECCTL1.bit.CAP4POL = 0;// Rising edgeECap1Regs.ECCTL1.bit.CTRRST1 = 1;// Difference operationECap1Regs.ECCTL1.bit.CTRRST2 = 1;// Difference operationECap1Regs.ECCTL1.bit.CTRRST3 = 1;// Difference operationECap1Regs.ECCTL1.bit.CTRRST4 = 1;// Difference operationECap1Regs.ECCTL2.bit.SYNCI_EN = 0;// Enable sync inECap1Regs.ECCTL2.bit.SYNCO_SEL = 0;// Pass throughECap1Regs.ECCTL1.bit.CAPLDEN = 1;// Enable capture unitsECap1Regs.ECCTL2.bit.TSCTRSTOP = 1;// Start CounterECap1Regs.ECCTL2.bit.REARM = 1;// arm one-shotECap1Regs.ECCTL1.bit.CAPLDEN = 1;// Enable CAP1-CAP4 register loadsECap1Regs.ECEINT.bit.CEVT4 = 1;// 4 events = interrupt
}

4个中断程序如下：

__interrupt void epwm1_isr(void){my code}

__interrupt void epwm2_isr(void){my code}

__interrupt void epwm3_isr(void){my code}

__interrupt void ecap1_isr(void){my code}

user4669117：

回复 ChuShan Zhang:

同问，我测速的时候也进不去中断，请问解决了吗？