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hello everyone welcome to controllers
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tech I got a lot of requests about
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making videos with stm32 cube ID so I
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will give it a shot today in this video
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I am going to show you guys how to use
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live expressions SWV trace and printf
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debugging in cube ID using of course
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stm32 I am using stm32f4 for 6r II
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controller although it should work with
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others too if you follow the procedure
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properly so let's start the ide and
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create our project in qmx select the
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microcontroller here I am going to name
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it as printf debug.trace click finish
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and wait for the project to open first
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thing I am going to do is set the clock
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to the external crystal this is it
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pretty much we don't need any additional
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setup here I am going to set the onboard
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led as output you don't have to do this
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now let's move to the clock section I
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have external crystal of 8 megahertz and
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I am going to configure it to give me a
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frequency of 180 megahertz
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you can configure to any clock you want
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so everything looks okay go to file and
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click Save this will generate the
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project next open the main dot C file
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here first of all we need to include
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stdio.h head of file for the printf to
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next we need to overwrite the write
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function with the following code printf
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rely on write function and we are
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modifying it to send the data to the ITM
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so all the printf commands will forward
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I am declaring a variable called count
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which I will increment and then trace it
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on SWV trace let's write the main
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function now I will toggle the onboard
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then increment the count variable then
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print the value of the count variable on
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and give a small delay for all these
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compile the code and hit the debug
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choose stm32 application
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in the debugger tab make sure the debug
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scroll down and enable serial wire
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viewer in the core clock typing your HC
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LK frequency mine is set to 180
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megahertz that I set up in the clock
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configuration also make sure that the
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live expressions is enabled hit OK and
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wait for the debugger to launch
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in the debugger we need to enable the
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monitoring first go to the window show
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view and enable the SWV trace and SWV I
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click on any of these view go to setting
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for the trace we need to input the
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variable name comparator one is for the
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ITM to print the printf output make sure
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you select the ITM simulus port 0 press
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the red button to enable the record
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type the variable in the live expression
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that you want to monitor
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and finally start the debug
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you can see all the features working
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properly the delay I declared was very
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let me just increase that to one second
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let's launch the debug session again
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this time I will not select the trace so
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we will only monitor the print F output
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sorry I forgot to turn on the record
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button we can see the print F output now
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and there is no trace as expected we can
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go to settings enable the trace reset
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the controller and start and it is back
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similarly if you only want to use the
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trace just remove the other from the
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and you can see that only trace is
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enabled now this is it guys
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I hope you understood this video and you
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will use these features in your programs
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I will continue making videos with cube
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IDE now if it doesn't screw up as it
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used to you can read the description for
