VS Arduino - BreakPoint execution time

Apr 16^th, 2024 at 11:19pm (UTC)

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BreakPoint execution time (Read 1186 times)

Chris Molloy Junior Member Offline Posts: 54 Location: Ontario, Canada Joined: Dec 13^th, 2012	BreakPoint execution time Apr 6^th, 2020 at 3:52pm	Print Post
	I am finding that a breakpoint, even a simple one is taking 45ms to execute. Does this sound right?


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Simon@Visual Micro Administrator Offline Posts: 2170 Joined: Feb 13^th, 2019	Re: BreakPoint execution time Reply #1 - Apr 6^th, 2020 at 5:07pm	Print Post
	It depends on a number of factors.... is this using the vMicro Serial Debugger, or one of the Hardware Debuggers? When you say it takes 45ms is this stepping from one line to the next with a break on each? (and assume a simple operation in code)


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Chris Molloy Junior Member Offline Posts: 54 Location: Ontario, Canada Joined: Dec 13^th, 2012	Re: BreakPoint execution time Reply #2 - Apr 7^th, 2020 at 8:23pm	Print Post
	it is a simple breakpoint outputting a variable value. when the breakpoint is enabled duration =0mms when the breakpoint is enabled duration =46 to 53ms see attached screen shots

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Chris Molloy Junior Member Offline Posts: 54 Location: Ontario, Canada Joined: Dec 13^th, 2012	Re: BreakPoint execution time Reply #3 - Apr 7^th, 2020 at 8:23pm	Print Post
	other screenshot

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Tim@Visual Micro Administrator Offline Posts: 12076 Location: United Kingdom Joined: Apr 10^th, 2010	Re: BreakPoint execution time Reply #4 - Apr 7^th, 2020 at 8:48pm	Print Post
	There is some throttling by default because users often put breakpoints in fast loops without adding any condition or count filtering. The pc can't process a serial message every 1ms We are looking at this area to make it more obvious how users can add their own rate limiting. There is a vMicro>Debugger menu item or tools option that sets Full Speed Debug. I think this will reduce the pause to a much lower value.


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Chris Molloy Junior Member Offline Posts: 54 Location: Ontario, Canada Joined: Dec 13^th, 2012	Re: BreakPoint execution time Reply #5 - Apr 7^th, 2020 at 9:53pm	Print Post
	Yes, that brought it down to 200 microseconds. It was causing my app to miss keystrokes. Thanks.


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