How to properly call HAL_setupeCAP(HAL_Handle handle) ?

Sergiu Sieber

Other Parts Discussed in Thread: MOTORWARE, CONTROLSUITE

Hi,

I followed one recent post about eCAP here in INSTASPIN forum ("Help with eCAP INT?") and set up all files according with that post.

However for below function in hal.c I am not sure I call it properly in main():

void HAL_setupeCAP(HAL_Handle handle)
{
   HAL_Obj *obj = (HAL_Obj *)handle;
     CAP_setModeCap(obj->capHandle); // set mode to CAP
     CAP_clearInt(obj->capHandle,CAP_Int_Type_CEVT1); // clear the CEVT1 int
     CAP_disableSyncIn(obj->capHandle);
     CAP_setCapEvtPolarity(obj->capHandle,CAP_Event_1,CAP_Polarity_Rising);
     CAP_setCapEvtPolarity(obj->capHandle,CAP_Event_2,CAP_Polarity_Falling);
     CAP_setCapEvtPolarity(obj->capHandle,CAP_Event_3,CAP_Polarity_Rising);
     CAP_setCapEvtPolarity(obj->capHandle,CAP_Event_4,CAP_Polarity_Falling);
     CAP_setCapEvtReset(obj->capHandle,CAP_Event_1,CAP_Reset_Enable);
     CAP_setCapEvtReset(obj->capHandle,CAP_Event_2,CAP_Reset_Enable);
     CAP_setCapEvtReset(obj->capHandle,CAP_Event_3,CAP_Reset_Enable);
     CAP_setCapEvtReset(obj->capHandle,CAP_Event_4,CAP_Reset_Enable);
     CAP_setCapContinuous(obj->capHandle);
     //CAP_setRunMode(obj->capHandle);
     CAP_setStopWrap(obj->capHandle,CAP_Stop_Wrap_CEVT4);
     CAP_enableCaptureLoad(obj->capHandle);
     //CAP_enableInt(obj->capHandle,CAP_Int_Type_CEVT1);
     CAP_enableInt(obj->capHandle,CAP_Int_Type_CEVT4);
     CAP_enableTimestampCounter(obj->capHandle);
        // enable eCAP interrupt
          PIE_enableInt(obj->pieHandle, PIE_GroupNumber_4, PIE_InterruptSource_ECAP1);
          CPU_enableInt(obj->cpuHandle, CPU_IntNumber_4);
     return;
} // end of HAL_setupCAP() function

I used lab01a and latest motorware.

In main() I call the function with HAL_setupeCAP(halHandle);

Compilation is OK but in debug mode, in REGISTER window, under eCAP1, all registers (especially control registers) have value 0.

How to inform compiler that in HAL_setupeCAP(HAL_Handle handle), eCAP1 is the one I need registers to be set? ( In controlSuite is for example something like

ECap1Regs.ECCTL2.bit.CONT_ONESHT = 1; // One-shot)

Regards,

Sergiu

over 10 years ago

0 ChrisClearman over 10 years ago

TI__Guru** 119680 points

did you enable the eCAP clock in hal?
CLK_disableEcap1Clock(obj->clkHandle);

0 Sergiu Sieber over 10 years ago in reply to ChrisClearman

Intellectual 290 points

Hi Chris,

Thank you for your help.

All I did so far:

in proj_lab01.c:

in main() I added
HAL_setupeCAP(halHandle);

also the isr:
interrupt void ecapISR(void)
{
CAP_rearm(halHandle->capHandle);
CAP_clearInt(halHandle->capHandle, CAP_Int_Type_CEVT4);
PIE_clearInt(halHandle->pieHandle, PIE_GroupNumber_4);
}

in hal.c:

void HAL_setupeCAP(HAL_Handle handle)
{
HAL_Obj *obj = (HAL_Obj *)handle;
CAP_setModeCap(obj->capHandle); // set mode to CAP
CAP_clearInt(obj->capHandle,CAP_Int_Type_CEVT1); // clear the CEVT1 int
CAP_disableSyncIn(obj->capHandle);
CAP_setCapEvtPolarity(obj->capHandle,CAP_Event_1,CAP_Polarity_Rising);
CAP_setCapEvtPolarity(obj->capHandle,CAP_Event_2,CAP_Polarity_Falling);
CAP_setCapEvtPolarity(obj->capHandle,CAP_Event_3,CAP_Polarity_Rising);
CAP_setCapEvtPolarity(obj->capHandle,CAP_Event_4,CAP_Polarity_Falling);
CAP_setCapEvtReset(obj->capHandle,CAP_Event_1,CAP_Reset_Enable);
CAP_setCapEvtReset(obj->capHandle,CAP_Event_2,CAP_Reset_Enable);
CAP_setCapEvtReset(obj->capHandle,CAP_Event_3,CAP_Reset_Enable);
CAP_setCapEvtReset(obj->capHandle,CAP_Event_4,CAP_Reset_Enable);
CAP_setCapContinuous(obj->capHandle);
//CAP_setRunMode(obj->capHandle);
CAP_setStopWrap(obj->capHandle,CAP_Stop_Wrap_CEVT4);
CAP_enableCaptureLoad(obj->capHandle);
//CAP_enableInt(obj->capHandle,CAP_Int_Type_CEVT1);
CAP_enableInt(obj->capHandle,CAP_Int_Type_CEVT4);
CAP_enableTimestampCounter(obj->capHandle);
// enable eCAP interrupt
PIE_enableInt(obj->pieHandle, PIE_GroupNumber_4, PIE_InterruptSource_ECAP1);
CPU_enableInt(obj->cpuHandle, CPU_IntNumber_4);
CLK_enableEcap1Clock(obj->clkHandle);

return;
} // end of HAL_setupCAP() function

in HAL_Handle HAL_init(void *pMemory,const size_t numBytes)
// added
// init eCAP
obj->capHandle = CAP_init((void *)CAP1_BASE_ADDR,sizeof(CAP_Obj));

in void HAL_setupGpios(HAL_Handle handle)
//modified
GPIO_setMode(obj->gpioHandle,GPIO_Number_19,GPIO_19_Mode_ECAP1);

in HAL_obj.h:
//added
#include "sw/drivers/cap/src/32b/f28x/f2806x/cap.h"
in
typedef struct _HAL_Obj_
{
//added
CAP_Handle capHandle;
.........
ADC_Handle adcHandle; //!< the ADC handle
.........

in HAL.h:
#include "sw/drivers/cap/src/32b/f28x/f2806x/cap.h"

// the globals

extern interrupt void mainISR(void);

//added
extern interrupt void ecapISR(void);

in static inline void HAL_initIntVectorTable(HAL_Handle handle)

//added
pie->ECAP1_INT = &ecapISR;

also at line 1300
void HAL_setupeCAP(HAL_Handle handle);

Did I miss something?

0 Whitney Dewey over 10 years ago in reply to Sergiu Sieber

TI__Guru 54795 points

Hi Sergiu,

When you step though your HAL_setupeCAP() function, can you see anything change in the registers window? If nothing seems to be changing, go into the HAL_setupPeripheralClks() and make sure that CLK_enableEcap1Clock() is being called somewhere. This is most likely the cause.

At the moment, I don't see any issues with the code you've posted, but we can take a closer look once you've confirmed whether or not you're enabling the eCAP1 clock using CLK_enableEcap1Clock().

Thanks,
Whitney

0 Sergiu Sieber over 10 years ago in reply to Whitney Dewey

Intellectual 290 points

Hi Whitney,

I did as you suggested and moved CLK_enableEcap1Clock() in hal.c to line 1370.

Now eCAP1 is working properly !

Thank you and Chris for help.

Regards,

Sergiu

C2000™︎ microcontrollers

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How to properly call HAL_setupeCAP(HAL_Handle handle) ?