*** Using Compiler 'V5.06 update 6 (build 750)', folder: 'D:\Keil_v5\ARM\ARMCC\Bin' Build target 'Target 1' compiling main.c... main.c(129): warning: #167-D: argument of type "char *" is incompatible with parameter of type "u8 *" OLED_ShowString(0,0, str, 16); main.c: 1 warning, 0 errors linking... Program Size: Code=13030 RO-data=2342 RW-data=408 ZI-data=1344 FromELF: creating hex file... "..\OBJ\Template.axf" - 0 Error(s), 1 Warning(s). Build Time Elapsed: 00:00:01