[libc][keil] remove libc_stdio_read() in __MICROLIB
@@ -336,7 +336,13 @@ int fgetc(FILE *f)
#ifdef RT_USING_POSIX
char ch;
- if (libc_stdio_read(&ch, 1) == 1)
+ if (libc_stdio_get_console() < 0)
+ {
+ LOG_W("Do not invoke standard output before initializing libc");
+ return -1;
+ }
+
+ if(read(STDIN_FILENO, &ch, 1) == 1)
return ch;
#endif
