Ie² studio projects utilizing the CC-RX compiler can leverage the "printf" feature to perform console output with printf-like formatting via the Renesas Debug Virtual Console. This capability allows for string output without the need to write low-level printf call functions in the source code. When generating a project using the Smart Configurator, the low-level I/O functions for printf are automatically added as part of the startup files. These files are located in the Project folder at /src/smc_gen/r_bsp/mcu/all. The files with low level functions are:
lowlvl.c
lowlvl.h
lowsrc.c
lowsrc.h
The above functions can be enabled by configuring the BSP file r_bsp_config.h by enabling the I/O library initialization switch as below:
#define BSP_CFG_IO_LIB_ENABLE (1)
The printf function can now be used by using puts() function as below example. The output of the function will be shown in Renesas Debug Virtual Console during the debug session.
If the project is not using code generator, the printf feature can be added by copying the files mentioned above directly into the src folder of the project.
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