TI中文支持网你好,
目前遇上一个问题, 在连续传送uPP
我们知道可以加大内存空间或采用中断程序来解决系统负载的问题
若采用加大内存空间, 会使用大量的内存空间, 目前没有足够空间使用
最后想以中断程序来执行
寻找了论坛, 目前执行结果都稍微有些问题
这里将程序整理成适合我所需要的系统
附上程序如下:
目前只能产生一次中断, 无法连续中断
在重置系统后无法再产生中断, 只能重新上电, 才可再产生一次中断
这里有两个问题
1. 我这程序要如何能连续中断?
2. 要如何执行什么程序代码才能重置中断, 而不需要重上电?
附上部分程序代码
a. 中断设置
void upp_intc_setup()
{/***************** interrupt configration for UPP **************************//* open CPINTC0 to map the UPP completetion ISR event to the host interrupt */CSL_CPINTC_Handle hnd_UPP;CSL_CPINTCChannel chnId;CSL_CPINTCSystemInterrupt sysIntr;CSL_IntcEventHandlerRecord uppHandler;CSL_IntcHandle hIntcUpp;CSL_IntcObj intcObjUpp;CSL_IntcEventId eventId;CSL_IntcParam vectId;CSL_IntcContext intcContext;CSL_IntcEventHandlerRecord EventHandler[30];CSL_IntcGlobalEnableState state;CSL_Status intStat;CSL_Status s = 0;//chnId = 9;eventId = CSL_GEM_INTC0_OUT_9_PLUS_20_MUL_N; // Interrupt Controller Output CIC0_OUT(9+20*n)vectId = CSL_INTC_VECTID_4;// CPU interrupt numbersysIntr = CSL_INTC0_RPINT;// CIC0 Event Inputs - 156: UPPINT (uPP interrupt)CSL_intcGlobalNmiEnable();// Enable Global InterruptsCSL_intcGlobalEnable(&state);hnd_UPP = CSL_CPINTC_open(0);if (hnd_UPP == 0){printf ("Error: Unable to open CPINTC instance 0\n");return;}// Intc Module InitializationintcContext.eventhandlerRecord = EventHandler;intcContext.numEvtEntries = 10; // used to allocate isr table entriess = CSL_intcInit(&intcContext);if (s != CSL_SOK) {return;}CSL_intcInterruptEnable(vectId);hIntcUpp = CSL_intcOpen (&intcObjUpp, eventId, &vectId , NULL);/* Bind ISR to Interrupt */uppHandler.handler = (CSL_IntcEventHandler)&upp_isr;uppHandler.arg = 0;CSL_intcPlugEventHandler(hIntcUpp, &uppHandler);/* Event Clear */CSL_intcHwControl(hIntcUpp,CSL_INTC_CMD_EVTCLEAR,NULL);/* Event Enable */CSL_intcHwControl(hIntcUpp, CSL_INTC_CMD_EVTENABLE, NULL);/* */CSL_CPINTC_mapSystemIntrToChannel (hnd_UPP, sysIntr, chnId);CSL_CPINTC_clearSysInterrupt(hnd_UPP, CSL_INTC0_RPINT);CSL_CPINTC_enableSysInterrupt (hnd_UPP, sysIntr);CSL_CPINTC_enableHostInterrupt (hnd_UPP, chnId);CSL_CPINTC_enableAllHostInterrupt(hnd_UPP);
}
b. 中断程序
void upp_isr()
{int intStatus = upp_int_status();intCnt.ISR++;while (intStatus != 0){intrFlag = 1;if (intStatus & upp_int_EOLI){upp_int_clear(upp_int_EOLI);intCnt.EOLI++;}if (intStatus & upp_int_EOWI){upp_int_clear(upp_int_EOWI);intCnt.EOWI++;}if (intStatus & upp_int_ERRI){upp_int_clear(upp_int_ERRI);intCnt.ERRI++;}if (intStatus & upp_int_UORI){upp_int_clear(upp_int_UORI);intCnt.UORI++;}if (intStatus & upp_int_DPEI){upp_int_clear(upp_int_DPEI);intCnt.DPEI++;}if (intStatus & upp_int_EOLQ){upp_int_clear(upp_int_EOLQ);intCnt.EOLQ++;}if (intStatus & upp_int_EOWQ){upp_int_clear(upp_int_EOWQ);intCnt.EOWQ++;}if (intStatus & upp_int_ERRQ){upp_int_clear(upp_int_ERRQ);intCnt.ERRQ++;}if (intStatus & upp_int_UORQ){upp_int_clear(upp_int_UORQ);intCnt.UORQ++;}if (intStatus & upp_int_DPEQ){upp_int_clear(upp_int_DPEQ);intCnt.DPEQ++;}// make sure all interrupts are handledintStatus = upp_int_status();}// end of interrupt (is this necessary?)uppRegs->UPEOI = 0;
}
备注:
PDK版本为pdk_C6657_1_1_2_6
CCS版本为5.4
谢谢各位的观看及回复
Andy Yin1：
你看一下UPP user guide中关于中断服务程序处理，可能漏掉了某个中断状态寄存器的清楚，以及EOI的清楚。
Lin Jia-Hung：
回复 Andy Yin1:
您好,
已经确认中断状态寄存器(IER)及EOI的清除, 但还是无法解决问题.
void upp_isr() {int intStatus = upp_int_status();intCnt.ISR++;while (intStatus != 0){intrFlag = 1;if (intStatus & upp_int_EOLI){upp_int_clear(upp_int_EOLI);intCnt.EOLI++;}if (intStatus & upp_int_EOWI){upp_int_clear(upp_int_EOWI);intCnt.EOWI++;}if (intStatus & upp_int_ERRI){upp_int_clear(upp_int_ERRI);intCnt.ERRI++;}if (intStatus & upp_int_UORI){upp_int_clear(upp_int_UORI);intCnt.UORI++;}if (intStatus & upp_int_DPEI){upp_int_clear(upp_int_DPEI);intCnt.DPEI++;}if (intStatus & upp_int_EOLQ){upp_int_clear(upp_int_EOLQ);intCnt.EOLQ++;}if (intStatus & upp_int_EOWQ){upp_int_clear(upp_int_EOWQ);intCnt.EOWQ++;}if (intStatus & upp_int_ERRQ){upp_int_clear(upp_int_ERRQ);intCnt.ERRQ++;}if (intStatus & upp_int_UORQ){upp_int_clear(upp_int_UORQ);intCnt.UORQ++;}if (intStatus & upp_int_DPEQ){upp_int_clear(upp_int_DPEQ);intCnt.DPEQ++;}// make sure all interrupts are handledintStatus = upp_int_status();}// end of interrupt (is this necessary?)uppRegs->UPEOI = 0; }int upp_int_status() {Uint32 token = uppRegs->UPIER;int returnT = 0;returnT |= CSL_FEXT(token, UPP_UPIER_EOLI) ? upp_int_EOLI : 0;// mask end-of-line interruptreturnT |= CSL_FEXT(token, UPP_UPIER_EOWI) ? upp_int_EOWI : 0;// mask end-of-transfer interruptreturnT |= CSL_FEXT(token, UPP_UPIER_ERRI) ? upp_int_ERRI : 0;// mask I/O error interrupt (CBA?)returnT |= CSL_FEXT(token, UPP_UPIER_UORI) ? upp_int_UORI : 0;// mask under/overrun interruptreturnT |= CSL_FEXT(token, UPP_UPIER_DPEI) ? upp_int_DPEI : 0;// mask DMA programming error interruptreturnT |= CSL_FEXT(token, UPP_UPIER_EOLQ) ? upp_int_EOLQ : 0;// mask end-of-line interruptreturnT |= CSL_FEXT(token, UPP_UPIER_EOWQ) ? upp_int_EOWQ : 0;// mask end-of-transfer interruptreturnT |= CSL_FEXT(token, UPP_UPIER_ERRQ) ? upp_int_ERRQ : 0;// mask I/O error interrupt (CBA?)returnT |= CSL_FEXT(token, UPP_UPIER_UORQ) ? upp_int_UORQ : 0;// mask under/overrun interruptreturnT |= CSL_FEXT(token, UPP_UPIER_DPEQ) ? upp_int_DPEQ : 0;// mask DMA programming error interruptreturn returnT; }void upp_int_clear(int flags) {Uint32 token = 0;token |= (flags & upp_int_EOLI) ? CSL_FMKT(UPP_UPIER_EOLI, TRUE) : 0;// clear end-of-line interrupttoken |= (flags & upp_int_EOWI) ? CSL_FMKT(UPP_UPIER_EOWI, TRUE) : 0;// clear end-of-transfer interrupttoken |= (flags & upp_int_ERRI) ? CSL_FMKT(UPP_UPIER_ERRI, TRUE) : 0;// clear I/O error interrupt (CBA?)token |= (flags & upp_int_UORI) ? CSL_FMKT(UPP_UPIER_UORI, TRUE) : 0;// clear under/overrun interrupttoken |= (flags & upp_int_DPEI) ? CSL_FMKT(UPP_UPIER_DPEI, TRUE) : 0;// clear DMA programming error interrupttoken |= (flags & upp_int_EOLQ) ? CSL_FMKT(UPP_UPIER_EOLQ, TRUE) : 0;// clear end-of-line interrupttoken |= (flags & upp_int_EOWQ) ? CSL_FMKT(UPP_UPIER_EOWQ, TRUE) : 0;// clear end-of-transfer interrupttoken |= (flags & upp_int_ERRQ) ? CSL_FMKT(UPP_UPIER_ERRQ, TRUE) : 0;// clear I/O error interrupt (CBA?)token |= (flags & upp_int_UORQ) ? CSL_FMKT(UPP_UPIER_UORQ, TRUE) : 0;// clear under/overrun interrupttoken |= (flags & upp_int_DPEQ) ? CSL_FMKT(UPP_UPIER_DPEQ, TRUE) : 0;// clear DMA programming error interruptuppRegs->UPIER = token; }
user5327055：
我也遇到了类似的问题，再把CIC中断标志清除就好了
