Hi,
I am new to using low power modes and I have spent a bit of time reading all the documentation and forum discussions without success.
I just want to use the LPTMR to trigger entering RUN mode. It seems like the LPTMR interrupt flag is not triggering the LLWU to wakeup. I added another wakeup source, external pushbutton, and that triggers the LLWU just fine. So I'm not sure what I'm doing wrong with the LPTMR. I do notice that most examples of using PE to generate the code use the TimerInt component along with a timer unit. I tried to do that but when I enabled everything, I couldnt get access to certain commands such as RESET and UpdateTicks. When I only use the Timer Unit LDD, it generates and interrupt so I don't really understand why the interrupt component is even needed.
This is the code for the interrupt handling:
void Cpu_OnLLSWakeUpINT(void) { /* Write your code here ... */ uint32_t tmp; tmp = Cpu_GetLLSWakeUpFlags(); if (tmp & LLWU_INT_MODULE0) /* LPTMR */ { LPTMR0_CSR |= LPTMR_CSR_TCF_MASK; // write 1 to TCF to clear the LPT timer compare flag } else if( tmp & LLWU_INT_MODULE0) /* WakeUp Button - PTC6 */ { LLWU_PE3 |= LLWU_PE3_WUPE10_MASK; } HEARTBEAT_LED_SetVal(HEARTBEAT_LED_DeviceData); } void mSecTimer_OnCounterRestart(LDD_TUserData *UserDataPtr) { /* Write your code here ... */ if(sensorMode == STANDBY) // if the sample interval just elapsed and we need to start a new sample { totalSampleTime += samplingInterval; // update totalSampleTime startNewSample = TRUE; // Set Flag } else { if(measurementStatus != COMPLETE) // if we are in the middle of a measurement { totalSampleTime += measurementTime; measSpecPressDone = !measSpecPressDone; measurementStatus = COMPLETE; } } }
And this is where I call the PE CPU_SetOperationMode:
if (LP_mode==LP_WAIT) { Cpu_SetOperationMode(DOM_WAIT, NULL, NULL); /* next interrupt will wake us up */ } else if (LP_mode==LP_SLEEP) { Cpu_SetOperationMode(DOM_SLEEP, NULL, NULL); /* next interrupt will wake us up */ } else if (LP_mode==LP_STOP) { Cpu_SetOperationMode(DOM_STOP, NULL, NULL); /* next interrupt will wake us up */ }
It is basically Erich Styger's code that I got from his mcuoneclipse website. Like I said the only real difference I can see is my PE setup.
If anyone can shed some light I would really appreciate it.
Original Attachment has been moved to: My_PE_Setup.pef.zip
