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02-09-2010, 12:30 PM
| #1 |
| Registered User Join Date: Feb 2010 Location: At the corner of "Walk" and "Don't Walk"
Posts: 2
| printf data from a macro I used search here and found a post that probably answers this question, but I can't get it to display (says page not found). I'm having a problem figuring out how to printf the values from this function. What I'm tring to do is get it to display a Bluetooth Address in the format "BD_ADDR = xx:xx:xx:xx:xx:xx" I'm somewhat familiar with printf 'ing %u %s %02x and such, but I’m lost here. I thought Code: printf (“BD_ADDR = %02x: %02x: %02x: %02x: %02x: %02x”, BD_ADDR(, a, b, c, d, e, f) ); Code: struct bd_addr {
u8 addr[6];
};
#define BD_ADDR_LEN 6
#define BD_ADDR_ANY (&(struct bd_addr){{0,0,0,0,0,0}})
#define BD_ADDR_LOCAL (&(struct bd_addr){{0,0,0,0xff,0xff,0xff}})
#define BD_ADDR(bdaddr, a, b, c, d, e, f) do{ \
(bdaddr)->addr[0] = a; \
(bdaddr)->addr[1] = b; \
(bdaddr)->addr[2] = c; \
(bdaddr)->addr[3] = d; \
(bdaddr)->addr[4] = e; \
(bdaddr)->addr[5] = f; }while(0)
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| JasonM is offline |  |
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02-09-2010, 12:41 PM
| #2 |
| and the hat of Destiny  Join Date: Aug 2001 Location: The edge of the known universe
Posts: 22,495
| Well in order to be passed to printf, the expansion of BD_ADDR needs to be separated by commas, not semicolons. I think you're overly trying to cram things into as few lines as possible. |
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02-09-2010, 01:01 PM
| #3 | |
| Registered User  Join Date: Dec 2009 Location: Henderson, NV
Posts: 887
| Quote:
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| jeffcobb is offline | |
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02-09-2010, 02:02 PM
| #4 |
| Registered User Join Date: Feb 2010 Location: At the corner of "Walk" and "Don't Walk"
Posts: 2
| I didn't write the macro, I'm trying to printf from a function in an existing lib that was written that way. Sorry I didn't make that clear. I wasn't trying to plagiarize this code, I was just pasting the part I'm working with. I wrote an APP that accesses this and it works just fine except I'm not getting the Bluetooth address to print correctly. I consider myself a low-level beginner in C as I work mostly in machine code (for CNC Machines). I know about as much C programming as I do flying...enough to get of the ground and crash real good. Here is the entire file named bd_addr.h with the macro I want to access the Bluetooth address from. It's part of the libogc lib for PowerPC. Code: /*
* Copyright (c) 2003 EISLAB, Lulea University of Technology.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwBT Bluetooth stack.
*
* Author: Conny Ohult <conny@sm.luth.se>
*
*/
#ifndef __BD_ADDR_H__
#define __BD_ADDR_H__
#include <gctypes.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
struct bd_addr {
u8 addr[6];
};
#define BD_ADDR_LEN 6
#define BD_ADDR_ANY (&(struct bd_addr){{0,0,0,0,0,0}})
#define BD_ADDR_LOCAL (&(struct bd_addr){{0,0,0,0xff,0xff,0xff}})
#define BD_ADDR(bdaddr, a, b, c, d, e, f) do{ \
(bdaddr)->addr[0] = a; \
(bdaddr)->addr[1] = b; \
(bdaddr)->addr[2] = c; \
(bdaddr)->addr[3] = d; \
(bdaddr)->addr[4] = e; \
(bdaddr)->addr[5] = f; }while(0)
//TODO: USE memcmp????
#define bd_addr_cmp(addr1, addr2) (((addr1)->addr[0] == (addr2)->addr[0]) && \
((addr1)->addr[1] == (addr2)->addr[1]) && \
((addr1)->addr[2] == (addr2)->addr[2]) && \
((addr1)->addr[3] == (addr2)->addr[3]) && \
((addr1)->addr[4] == (addr2)->addr[4]) && \
((addr1)->addr[5] == (addr2)->addr[5]))
//TODO: USE memcpy????
#define bd_addr_set(addr1, addr2) do { \
(addr1)->addr[0] = (addr2)->addr[0]; \
(addr1)->addr[1] = (addr2)->addr[1]; \
(addr1)->addr[2] = (addr2)->addr[2]; \
(addr1)->addr[3] = (addr2)->addr[3]; \
(addr1)->addr[4] = (addr2)->addr[4]; \
(addr1)->addr[5] = (addr2)->addr[5]; }while(0)
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __BD_ADDR_H__ */
Last edited by JasonM; 02-09-2010 at 02:07 PM. |
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