static char buf_user[4096] = {0}, *buf_user_p, *buf_user_print; \
	unsigned long buf_user_size; \
	unsigned char *TMPBUF; \
	unsigned long idx; \
	int snprintf_ret; \
	TMPBUF = (unsigned char *) (x); \
	buf_user[0] = 0; \
	buf_user[2] = 0; \
	buf_user_p = buf_user; \
	buf_user_size = sizeof(buf_user); \
	for (idx = 0; idx < (y); idx++) { \
		if (buf_user_size <= 0) { \
			break; \
		}; \
		snprintf_ret = snprintf(buf_user_p, buf_user_size, ", %02x", TMPBUF[idx]); \