This is a simple library used to profile of your applications in the cortex M4 micro controller.

this library makes use of Semihosting capabilities in the Cortex-M4 microcontroller's family, additionally uses the no_instrument_functions provided by the gnu compiler that returns two address (Call and Called function addresses).

As well it includes a simple counter used to approximate the number of cycles spending by each function. At the end the library returns a XML file with the whole profile information to be visualized by and external platform.

GUI

The view of information had been done through a graphical user interface able to parse the XML and showing the results in a friendly tree-table. This table contains: name of a function, number of cycles, and the address associated.

Note: This is the first version of this library, therefore you are welcome to use, change or report any issue. I'm working on this during my free time and therefore I'll try to update documentation soon and improve the code.

Form my point of view this is no an efficient implementation since I'm using a tree data-structure to allocate the different calling paths it is interesting because there is no any open source implementation of profiling for this MCU family exploiting the semihosting communication in the DBG mode.

thanks and enyoing