RM44L920: eCAP interrupt error

KARTHIK R

Part Number: RM44L920
Other Parts Discussed in Thread: HALCOGEN

I am usin RM44L920 eCAP module to measure wheel speed using all 4 eCAP event interrupt and found that during the testing in middle there were speed data and other peripherals are working fine such as ADC , CAN , RTI.What could the issue we also reseting the counter whenever there is over flow.Attaching the below halcogen settings for eCAP.We are using interrupt based calculation hence not require the capture time.

over 1 year ago

0 jagadish gundavarapu over 1 year ago

TI__Mastermind 46995 points

Hi Karthik,

KARTHIK R said:
What could the issue we also reseting the counter whenever there is over flow

Sorry, i didn't understand the issue well. Can you please elaborate it?

Thanks & regards,
Jagadish.

0 KARTHIK R over 1 year ago in reply to jagadish gundavarapu

Prodigy 175 points

Hi jagadish ,

I am using eCAP module to compute speed , in the middle of test at some point the eCAP interrupt is not being generated even when the pulses coming in , the reason why is whenever i get interrupt i will raise a flag then based on the flag computation process will happen.Is ther any abort is being happened in between and how could i find why its happening since iam using many intrrupts which works simultaneusly such as RTI ,GPIO,eCAP.Only eCAP interrupt is not being genearted.

0 jagadish gundavarapu over 1 year ago in reply to KARTHIK R

TI__Mastermind 46995 points

Hi Karthik,

Please refer below FAQ to understand the troubleshooting steps for abort exceptions.

(+) [FAQ] TMS570LC4357: Troubleshooting the Abort Exceptions on Hercules Devices - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

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Thanks & regards
Jagadish.