Here is how to implement System_printf() to write to the console on T.I. CC2640R2F, this is the solution to the unsolved closed issue “CCS/CC2640R2F: Implementation of System_printf()” asked on TIs forum: https://e2e.ti.com/support/tools/ccs/f/81/t/670719. Chang the .cfg file to include SysMin, include the preprocessor XDC references, add the bufSize, remove all references to SysCallback: var SysMin =Continue Reading [Solved] System_printf() on CC2640R2F