I am a newbie to Dynamic C (Ver 9.62) and BL2100 via RS-232. I am going to run a test program in which computed and logged data (from potentiometers and motor velocity halls) are saved into a text formatted file in the host PC for analysis and calibration. I tried with fopen, fopen_wr and fcreate, but it seems that it is impossible to save data into a file in the host PC. Anyone who knows how to write codes to save data to a text formatted file in a host PC drive please give me a hand. Thank you very much.