[ABANDONED] "invalid packet received" error in SystemView 2.50

festevez · Jul 27th 2017, 9:38am

Dear all,

I am working with a Cortex M4-based board and micrium OS, as long as I execute SystemView and receive a network message, the "invalid packet received" error kicks in stopping the record.
I have already checked the macros SEGGER_SYSVIEW_LOCK and SEGGER_RTT_LOCK, both seems to be ok according to several threads in this forum (among others in internet).

I carry out my recording using the SWD interface at 8000 KHz.

You can see attached the definition of SEGGER_RTT_LOCK and SEGGER_RTT_UNLOCK:

Source Code

#elif (defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)) #ifndef SEGGER_RTT_MAX_INTERRUPT_PRIORITY
#define SEGGER_RTT_MAX_INTERRUPT_PRIORITY (0x20)
#endif
#define SEGGER_RTT_LOCK() { \
unsigned int LockState; \
__asm volatile ("mrs %0, basepri \n\t" \
"mov r1, %1 \n\t" \
"msr basepri, r1 \n\t" \
: "=r" (LockState) \
: "i"(SEGGER_RTT_MAX_INTERRUPT_PRIORITY) \
: "r1" \
);
#define SEGGER_RTT_UNLOCK() __asm volatile ("msr basepri, %0 \n\t" \ : \
: "r" (LockState) \
: \
); \
}

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Please, let me know if you can help me with this issue and if you need any other additional information.
Thanks in advance!

SEGGER - Johannes · Oct 9th 2017, 1:35pm

Hi,

Did you make sure that SEGGER_RTT_MAX_INTERRUPT_PRIORITY is defined according to your system configuration to mask all interrupts that produce SystemView events?

Regards
Johannes

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