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If you want disable debug mode (when in completely production mode), you can do it with define in defines.h file: They will be in your code, but will not affect to size/speed of your code. If you enable this define and set debug to 0, then all functions becomes defines with empty content and compiler will just throw them out. Second option, is to set one define I’ve made in library. One option will be to everywhere in your project delete lines when you display something to SWO. But then, you want to completely disable this debugging mode. When you are in debug mode and want to display some data, you can do with print function in my library. On initialize, SWO peripheral is enabled on pin PB3. Program will be in real time speed and you will watch your data on SWO pin in Keil uVisionĬlock for programming, necessary if you want to program/debug MCUĭata input and output, necessary if you want to program/debug MCUĭata pin from MCU for trace view (Serial Wire Viewer), optional and recommended
#OPENSTM STM32CUBEMX NUCLEO F401RE UPDATE#
Use STM32 ST-Link Utility to update to newest version.Select your debugger, if you are working with STM32F4-Discovery, select ST-Link.Open “Options for Target” -> “Debug” tab.First is that you need to specify real CPU clock so trace will be synchronous (like baudrate in USART). To get this to work, you have to make sure for some things. In production (non debug) mode, SWV will not work. This feature is enabled only when MCU is in debug mode. If you are using external programmer/debugger (Keil ULINK2, Keil ULINK Pro, Segger J-Link, etc), then you should check if they have SWO option, but every serious debugger should have this!
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Some boards (like F429-Discovery) needs solder bridge if you want to enable connection. ST-Link on STM32 boards has this input, if SWO from MCU is connected to ST-Link by default, check schematics.
#OPENSTM STM32CUBEMX NUCLEO F401RE SERIAL#
This is called SWV (Serial Wire Viewer) using SWO ( Serial Wire Output) output. Full SWD also enables you to output something from MCU which debugging. For programming, only clock and data lines are required. All STM32 boards, which have ST-Link on board, uses this option. STM32F4 has SWD ( Serial Wire Debug) option for programming/debugging. This can be used instead of one USART available in STM32F4 to display data to user when something is going wrong and you want use debug. All Cortex-M4 devices have feature to output different data for debugging.