![]() Arm Compiler for Embedded including assembler, linker, and highly optimized run-time libraries that are tailored to Arm Cortex-M based devices for optimum code size and performance.MDK-Core that is based on the µVision IDE (Windows only), which supports all Cortex-M devices.Now your printf calls in your application should be routed via the SWO pin. Now set Compiler->I/O->STDOUT to ITM and activate the check box.Now press the "Manage Run-Time Environment" button.The resulting settings should look like this: In the same menu set "Core Clock" to the clock speed the TPIU is clocked at.In the same menu set "Trace Port" to "Serial Wire Output - UART/NRZ".Enable Trace in project options under Debug->Use J-LINK/J-TRACE Cortex->Settings->Trace->Enable.To reroute your printf calls to SWO the following settings must be set in Keil uVision: This option is only available when using ARM compiler 6 or later in Keil MDK-ARM. Support for SEGGER_RTT_ASM_ARMv7M.S is available when using "armclang" as assembler. To display the messages you can use the J-Link RTT Viewer for example which is part of the J-Link software package. Now select STDOUT and set it to Variant User:Īfter that your project should build and you can use printf via RTT in your application. First add also the corresponding syscalls file to your application.Īdditionally enable STDOUT retargeting via the "Manage Run-Time Environment" button: printf to use RTT, additional steps are necessary. You can now use the RTT API directly in your application and send data back and forth between target and host PC. Generally if you want to use RTT in Keil all you need to do is add the RTT sources to your project as explained in the J-Link user manual. MTB(partially)/ETM trace is supported for Cortex-M0, M0+, M3 and M4. ![]() Full support for SWO trace J-Link and J-Trace debug probes.Trace support before V5.30 of the Keil MDK-ARM Start the debugging session and open an "Instruction Trace" window.Set Trace Port to "Sync Trace Port with 4-bit Data".Click Settings to open the "Target Driver Setup" dialog.Set the created file as Initialization File.Open the dialog "Options for Target - Debug".ini file has to be created for the device to be traced: For the best trace experience and the full usage of all features of the J-Trace, it is recommended to use Ozone.Ĭonfigure µVision for 4-Pin Trace with J-Trace.All other windows only show whether the code was executed or not. The Code coverage feature only shows case detection inside of the Disassembly Window.Cortex-M7 targets) with J-Trace debug probes. General native Support for ETB and MTB tracing with J-Link and J-Trace debug probes.SWO trace with J-Link and J-Trace debug probes.Since V5.30 of the MDK-ARM the following features are supported: A general overview of the different trace types can be found here. Keil MDK supports various kinds of tracing features. The JLinkSettings.ini for a script file named like the settings file only with a different file extension. ![]() If no script file is explicitly passed to the DLL, it will search in the directory of The JLinkSettings.ini is a settings file created by the J-Link DLL on debug session start.
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