LPC54606: 3 input events triggering with SCTIMER, do not work

Rainbow73 — Tue, 02 Feb 2021 15:31:48 GMT

I need to check 3 input signals connected to fan control pins.
The code below works only if instead of 3 signals I configure 2. At the third signal added the callback function is called but the returned value is always 0

void SCT_Initial_Detection_Callback1(void){

CaptureVal1 = SCTIMER_1_PERIPHERAL->SCTCAP[CaptureReg1];

}

Can anyone tell me what I'm doing wrong?

Thanks

Code:

/* Schedule an event to look for a rising edge on input 1 */
if (SCTIMER_CreateAndScheduleEvent(SCTIMER_1_PERIPHERAL,
                                         kSCTIMER_InputRiseEvent,
                                         0,
                                         kSCTIMER_Input_1,
                                         kSCTIMER_Counter_L,
                                         &initialRisingEdgeInput1) == kStatus_Fail)
{
  PRINTF(" SCTIMER_CreateAndScheduleEvent1 ERROR \r\n ");
  return(-1);
}

if (SCTIMER_SetupCaptureAction(SCTIMER_1_PERIPHERAL,
                                     kSCTIMER_Counter_L,
                                     &CaptureReg1,
                                     initialRisingEdgeInput1) == kStatus_Fail)
{
  PRINTF(" SCTIMER_SetupCaptureAction1 ERROR \r\n ");
     return(-1);
}
/* Schedule an event to look for a rising edge on input 2 */
if (SCTIMER_CreateAndScheduleEvent(SCTIMER_1_PERIPHERAL,
                                         kSCTIMER_InputRiseEvent,
                                         0,
                                         kSCTIMER_Input_2,
                                         kSCTIMER_Counter_L,
                                         &initialRisingEdgeInput2) == kStatus_Fail)
{
  PRINTF(" SCTIMER_CreateAndScheduleEvent2 ERROR \r\n ");
  return(-1);
}

if (SCTIMER_SetupCaptureAction(SCTIMER_1_PERIPHERAL,
                                     kSCTIMER_Counter_L,
                                     &CaptureReg2,
                                     initialRisingEdgeInput2) == kStatus_Fail)
{
  PRINTF(" SCTIMER_SetupCaptureAction2 ERROR \r\n ");
     return(-1);
}
/* Schedule an event to look for a rising edge on input 3 */
if (SCTIMER_CreateAndScheduleEvent(SCTIMER_1_PERIPHERAL,
           kSCTIMER_InputLowEvent,
           0,
           kSCTIMER_Input_3,
           kSCTIMER_Counter_L,
           &initialRisingEdgeInput3) == kStatus_Fail)
{
  PRINTF(" SCTIMER_CreateAndScheduleEvent3 ERROR \r\n ");
  return(-1);
}

if (SCTIMER_SetupCaptureAction(SCTIMER_1_PERIPHERAL,
          kSCTIMER_Counter_L,
          &CaptureReg3,
          initialRisingEdgeInput3) == kStatus_Fail)
{
  PRINTF(" SCTIMER_SetupCaptureAction3 ERROR \r\n ");
  return(-1);
}
/* Set the callback funcitons */
SCTIMER_SetCallback(SCTIMER_1_PERIPHERAL, SCT_Initial_Detection_Callback1, initialRisingEdgeInput1);
SCTIMER_SetCallback(SCTIMER_1_PERIPHERAL, SCT_Initial_Detection_Callback2, initialRisingEdgeInput2);
SCTIMER_SetCallback(SCTIMER_1_PERIPHERAL, SCT_Initial_Detection_Callback3, initialRisingEdgeInput3);

/* Enable interrupts for both events */
SCTIMER_EnableInterrupts(SCTIMER_1_PERIPHERAL, 1 << initialRisingEdgeInput1);
SCTIMER_EnableInterrupts(SCTIMER_1_PERIPHERAL, 1 << initialRisingEdgeInput2);
SCTIMER_EnableInterrupts(SCTIMER_1_PERIPHERAL, 1 << initialRisingEdgeInput3);

NVIC_EnableIRQ(SCTIMER_1_IRQN);
SCTIMER_StartTimer(SCTIMER_1_PERIPHERAL, kSCTIMER_Counter_L);

Re: LPC54606: 3 input events triggering with SCTIMER, do not work

Alice_Yang — Wed, 03 Feb 2021 06:42:34 GMT

Hello,

"the callback function is called but the returned value is always 0"

->> What about your callback function, what value it returned?

You can attached your whole project, I will help to check on my side.

Regard,

Alice

Re: LPC54606: 3 input events triggering with SCTIMER, do not work

Rainbow73 — Thu, 04 Feb 2021 07:09:26 GMT

Hello Alice,

I sent you the demo code in a private message.

Regard,

Veronica

Re: LPC54606: 3 input events triggering with SCTIMER, do not work

Alice_Yang — Tue, 09 Feb 2021 08:51:41 GMT

Hello ,

It failed when I download your project with private message:

How about change

kSCTIMER_InputLowEvent, to kSCTIMER_InputRiseEvent,

in input 3 setting.

And first just use the only one input to test.

Regards,

Alice

topic Re: LPC54606: 3 input events triggering with SCTIMER, do not work in LPC Microcontrollers

LPC54606: 3 input events triggering with SCTIMER, do not work

Re: LPC54606: 3 input events triggering with SCTIMER, do not work

Re: LPC54606: 3 input events triggering with SCTIMER, do not work

Re: LPC54606: 3 input events triggering with SCTIMER, do not work