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trace - logic analyzer

ema vac

I'm using keil with STLINK, connected to a GD32F130C8.

I can see, in debug, by means of Watch, variables changing in real time.

Everything works fine.

Now I would like to enable trace, in order to see the evolution of a variable in time domain, thru logic analyzer.

I enabled trace flag on trace tab (setting menu), I set, on trace tab, the processor speed (72MHZ).

The problem is that logic analyzer doesn't show requested float variable, and on the bottom of the screen I read the sentence "Trace: No Synchronization".

The output of SystemCoreClock() function gives 72Mhz.

any hint?

Parents
  • 0 in reply to Andy Neil

    In the user manual of gd32 processor I can also read the following:

    The CortexTM-M3 processor is based on the ARMv7 architecture and supports both Thumb and Thumb-2 instruction sets. Some system peripherals listed below are also provided by CortexTM-M3:
     Internal Bus Matrix connected with I-Code bus, D-Code bus, System bus, Private Peripheral Bus (PPB) and debug accesses (AHB-AP)
     Nested Vectored Interrupt Controller (NVIC)
     Flash Patch and Breakpoint (FPB)
     Data Watchpoint and Trace (DWT)
     Instrumentation Trace Macrocell (ITM)
     Serial Wire JTAG Debug Port (SWJ-DP)
     Trace Port Interface Unit (TPIU)

Reply
  • 0 in reply to Andy Neil

    In the user manual of gd32 processor I can also read the following:

    The CortexTM-M3 processor is based on the ARMv7 architecture and supports both Thumb and Thumb-2 instruction sets. Some system peripherals listed below are also provided by CortexTM-M3:
     Internal Bus Matrix connected with I-Code bus, D-Code bus, System bus, Private Peripheral Bus (PPB) and debug accesses (AHB-AP)
     Nested Vectored Interrupt Controller (NVIC)
     Flash Patch and Breakpoint (FPB)
     Data Watchpoint and Trace (DWT)
     Instrumentation Trace Macrocell (ITM)
     Serial Wire JTAG Debug Port (SWJ-DP)
     Trace Port Interface Unit (TPIU)

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