1 /*
2 stm32flash - Open Source ST STM32 flash program for *nix
3 Copyright (C) 2010 Geoffrey McRae <geoff@spacevs.com>
4
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 */
19
20 #include <stdint.h>
21 #include "utils.h"
22
23 /* detect CPU endian */
cpu_le()24 char cpu_le() {
25 const uint32_t cpu_le_test = 0x12345678;
26 return ((const unsigned char*)&cpu_le_test)[0] == 0x78;
27 }
28
be_u32(const uint32_t v)29 uint32_t be_u32(const uint32_t v) {
30 if (cpu_le())
31 return ((v & 0xFF000000) >> 24) |
32 ((v & 0x00FF0000) >> 8) |
33 ((v & 0x0000FF00) << 8) |
34 ((v & 0x000000FF) << 24);
35 return v;
36 }
37
le_u32(const uint32_t v)38 uint32_t le_u32(const uint32_t v) {
39 if (!cpu_le())
40 return ((v & 0xFF000000) >> 24) |
41 ((v & 0x00FF0000) >> 8) |
42 ((v & 0x0000FF00) << 8) |
43 ((v & 0x000000FF) << 24);
44 return v;
45 }
46
printStatus(FILE * fd,int condition)47 void printStatus(FILE *fd, int condition){
48 if(condition)
49 fprintf(fd, "Error!\n");
50 else
51 fprintf(fd, "OK\n");
52 }
53