Does the Cortex-R4 core in BCM43907 has ETM?

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MiZh_4707896
Level 1
Level 1

Hi,

I have an evaluation board CYW43907.  On the SoC, there is a Cortex-R4 core.

I am trying to trace it. But In the debug ROM table, I only found two "Cortex-R4 Debug", no ETM(Embedded Trace Macrocell ).

(I still don't why there are two "Cortex-R4 Debug".)

I checked  BCM43907 datasheet, it says:

"Using multiple technologies to reduce cost, the ARM Cortex-R4 enables improved memory utilization, reduced pin overhead, and

reduced silicon area. It also has extensive debugging features, including real-time tracing of program execution.

"

Sounds like it has ETM or similar things.  I am wondering someone can give me a hint about this.

Thanks

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1 Solution
Aditi_B
Moderator
Moderator
Moderator
500 replies posted 5 questions asked 250 replies posted

Hi,

CYW43907 doesn't support ETM. It do support standard JTAG/SWD support for debugging purposes but the SWD functionality haven't been tested from our side.

Thanks

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2 Replies
Aditi_B
Moderator
Moderator
Moderator
500 replies posted 5 questions asked 250 replies posted

Hi,

CYW43907 doesn't support ETM. It do support standard JTAG/SWD support for debugging purposes but the SWD functionality haven't been tested from our side.

Thanks

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Thanks

What about the cortex-m3 in cyw43438?  In the datasheet, I saw they draw the ETM in the block diagram.

I am about to try it. Please let me know if you also familiar with this one, thanks

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