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MPC5748G ENET TS_TIMER interrupt

Question asked by Johannes Rehnman on Apr 28, 2017
Latest reply on May 3, 2017 by Johannes Rehnman



I am having problems with interrupts for the 1588 timer. Even with EIR[TS_TIMER] asserted and EIMR[TS_TIMER] unmasked, my interrupt handler is not called. I have performed and verified the following steps:

  • INTC.PSR214 register is configured (processor 0, priority 14)
  • ATPER is configured (10^9)
  • ATINC[INC] is 0x19 and ATINC[INC_CORR] is 0
  • ATCR[EN] and ATCR[PEREN] is enabled
  • I see that ATSTMP is periodically updated and I can set ATCR[CAPTURE] to read the timer register
  • EIMR[TS_TIMER] is enabled
  • I can observe in the debugger that EIR[TS_TIMER] is re-set after 1 second as expected after manually clearing the flag.
  • Other ENET interrupts are properly triggered, e.g. EIR[TXF] and EIR[RXF]

I am also fairly certain that my interrupt handler is configured correctly since I can use PSR214[SWTN] to trigger the handler manually.


Is there any additional operations that needs to be performed for the TS_TIMER interrupt to trigger the interrupt vector? I am testing on ENET0 and the system is using eCos as OS if that makes any difference.


Best regards,