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Julien's avatar
Julien
Icon for Occasional Contributor rankOccasional Contributor
7 years ago

NIOSII/e peripheral IO read access performance?

Hi, I am using a design that includes a NIOSII/e (the "e" is important here), that accesses a UART IP as an Avalon slave. Works fine, but I timed the duration of each individual word read access, an...
Julien's avatar
Julien
Icon for Occasional Contributor rankOccasional Contributor
7 years ago

I captured a SignalTap trace of av_ld_waiting_data, but it toggles continuously, which makes sense since the NIOS takes its instructions from the OC memory, so it continuously performs read requests on the Avalon bus.

I am not too familiar with signalTap, could you help me set it up so as to only trigger when the NIOS does a read request at one specific memory address ?