280049c CLA影响PWM中断运行

我使用了一个pwm中断，用pwm2触发，不触发cla时运行时间为400ns，触发cla后pwm中断运行时间是13us，感觉是cla影响了pwm中断。pwm中断配置如下：

        EALLOW;
        EPwm2Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO;
        EPwm2Regs.ETSEL.bit.INTEN  = 1;                       EPwm2Regs.ETPS.bit.INTPRD  = 1;                   EDIS;

Susan Yang：

所以您现在是EPWM3触发CLA task？ PieVectTable.EPWM2_INT=&EPWM1ISR;

您的EPWM3是如何配置的呢？能否简要说一下您的程序？

,

user6154541：

您好，我用EPWM3触发cla task1，软件强制触发task8一次。关于cla的配置如下：Cla1ForceTask8();EPwm3Regs.ETSEL.bit.INTSEL = ET_CTR_PRD;// Select INT on Zero eventEPwm3Regs.ETSEL.bit.INTEN= 1;// 使能Enable INT,外设级中断允许EPwm3Regs.ETPS.bit.INTPRD= 1;//ET_1ST;// Generate INT on 1rd event

void CLA_configClaMemory(void)
{#define _FLASH

//extern uint32_t Cla1ProgRunStart, Cla1ProgLoadStart, Cla1ProgLoadSize,Cla1ProgLoadEnd;
EALLOW;
#ifdef _FLASH//// Copy over code from FLASH to RAM//
//MemCopy(&Cla1ProgLoadStart, &Cla1ProgLoadEnd, &Cla1ProgRunStart);
//asm("RPT #3 || NOP");memcpy((uint32_t *)&Cla1ProgRunStart, (uint32_t *)&Cla1ProgLoadStart,(uint32_t)&Cla1ProgLoadSize);
#endif //_FLASH
//// Initialize and wait for CLA1ToCPUMsgRAM//MemCfgRegs.MSGxINIT.bit.INIT_CLA1TOCPU = 1;while(MemCfgRegs.MSGxINITDONE.bit.INITDONE_CLA1TOCPU != 1){};
//// Initialize and wait for CPUToCLA1MsgRAM//MemCfgRegs.MSGxINIT.bit.INIT_CPUTOCLA1 = 1;while(MemCfgRegs.MSGxINITDONE.bit.INITDONE_CPUTOCLA1 != 1){};
//// Select LS4RAM and LS5RAM to be the programming space for the CLA// First configure the CLA to be the master for LS4 and LS5 and then// set the space to be a program block//MemCfgRegs.LSxMSEL.bit.MSEL_LS0 = 1;MemCfgRegs.LSxCLAPGM.bit.CLAPGM_LS0 = 1;MemCfgRegs.LSxMSEL.bit.MSEL_LS1 = 1;MemCfgRegs.LSxCLAPGM.bit.CLAPGM_LS1 = 0;
EDIS;
}

//
// CLA_initCpu1Cla1 – Initialize CLA1 task vectors and end of task interrupts
//
void CLA_initCpu1Cla1(void)
{extern Uint16 Cla1Prog_Start;//// Compute all CLA task vectors// On Type-1 CLAs the MVECT registers accept full 16-bit task addresses as// opposed to offsets used on older Type-0 CLAs//EALLOW;Cla1Regs.MVECT1 = (uint16_t)(&Cla1Task1);Cla1Regs.MVECT2 = (uint16_t)(&Cla1Task2);Cla1Regs.MVECT3 = (uint16_t)(&Cla1Task3);Cla1Regs.MVECT4 = (uint16_t)(&Cla1Task4);Cla1Regs.MVECT5 = (uint16_t)(&Cla1Task5);Cla1Regs.MVECT6 = (uint16_t)(&Cla1Task6);Cla1Regs.MVECT7 = (uint16_t)(&Cla1Task7);Cla1Regs.MVECT8 = (uint16_t)(&Cla1Task8);

// Enable the IACK instruction to start a task on CLA in software// for all8 CLA tasks. Also, globally enable all 8 tasks (or a// subset of tasks) by writing to their respective bits in the// MIER register
//EALLOW;Cla1Regs.MCTL.bit.IACKE = 1;Cla1Regs.MIER.all = (M_INT8 | M_INT1);
//DmaClaSrcSelRegs.CLA1TASKSRCSEL1.bit.TASK1 = CLA_TRIG_EPWM3INT;EDIS;

}

,

user6154541：

我用EPWM2触发PWM中断EPWM1_ISR,具体配置如下：EPwm2Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO;EPwm2Regs.ETSEL.bit.INTEN= 1;EPwm2Regs.ETPS.bit.INTPRD= 1;
EALLOW;//PieVectTable.EPWM2_INT=&EPWM1ISR;EDIS;
IER |= M_INT3; // Enable CPU Interrupt 3PieCtrlRegs.PIEACK.bit.ACK3= 1;PieCtrlRegs.PIEIER3.bit.INTx2 = 1;

,

user6154541：

不触发PWM中断时，EPWM3触发cla单独运行正常；不触发cla，EPWM2触发PWM中断单独运行正常，运行时间为400ns。同时用EPWM3触发cla、EPWM2触发PWM中断，PWM中断运行时间为13us。

,

Susan Yang：

已私信

,

user4612577：

请问可以公开解决方案吗？

,

zhanju hao：

你好，请问如何解决的呢？我的配置类似于楼主，我是测试PWM中断次数及CLA运行次数，CLA的运行次数不对。另外请问.cla文件中能清除触发中断标志吗？比如我是EPWM1触发的CLA,EPwm1Regs.ETCLR.bit.INT =1;
谢谢