1 /**
2 *
3 * \file
4 *
5 * \brief This module contains common APIs declarations.
6 *
7 * Copyright (c) 2016 Atmel Corporation. All rights reserved.
8 *
9 * \asf_license_start
10 *
11 * \page License
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright notice,
17 * this list of conditions and the following disclaimer.
18 *
19 * 2. Redistributions in binary form must reproduce the above copyright notice,
20 * this list of conditions and the following disclaimer in the documentation
21 * and/or other materials provided with the distribution.
22 *
23 * 3. The name of Atmel may not be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
29 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
30 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
34 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
35 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 *
38 * \asf_license_stop
39 *
40 */
41 #include "common/include/nm_common.h"
42
m2m_memcpy(uint8 * pDst,uint8 * pSrc,uint32 sz)43 void m2m_memcpy(uint8* pDst,uint8* pSrc,uint32 sz)
44 {
45 if(sz == 0) return;
46 do
47 {
48 *pDst = *pSrc;
49 pDst++;
50 pSrc++;
51 }while(--sz);
52 }
m2m_checksum(uint8 * buf,int sz)53 uint8 m2m_checksum(uint8* buf, int sz)
54 {
55 uint8 cs = 0;
56 while(--sz)
57 {
58 cs ^= *buf;
59 buf++;
60 }
61
62 return cs;
63 }
64
m2m_memset(uint8 * pBuf,uint8 val,uint32 sz)65 void m2m_memset(uint8* pBuf,uint8 val,uint32 sz)
66 {
67 if(sz == 0) return;
68 do
69 {
70 *pBuf = val;
71 pBuf++;
72 }while(--sz);
73 }
74
m2m_strlen(uint8 * pcStr)75 uint16 m2m_strlen(uint8 * pcStr)
76 {
77 uint16 u16StrLen = 0;
78 while(*pcStr)
79 {
80 u16StrLen ++;
81 pcStr++;
82 }
83 return u16StrLen;
84 }
85
m2m_strncmp(uint8 * pcS1,uint8 * pcS2,uint16 u16Len)86 uint8 m2m_strncmp(uint8 *pcS1, uint8 *pcS2, uint16 u16Len)
87 {
88 for ( ; u16Len > 0; pcS1++, pcS2++, --u16Len)
89 if (*pcS1 != *pcS2)
90 return ((*(uint8 *)pcS1 < *(uint8 *)pcS2) ? -1 : +1);
91 else if (*pcS1 == '\0')
92 return 0;
93 return 0;
94 }
95
96 /* Finds the occurance of pcStr in pcIn.
97 If pcStr is part of pcIn it returns a valid pointer to the start of pcStr within pcIn.
98 Otherwise a NULL Pointer is returned.
99 */
m2m_strstr(uint8 * pcIn,uint8 * pcStr)100 uint8 * m2m_strstr(uint8 *pcIn, uint8 *pcStr)
101 {
102 uint8 u8c;
103 uint16 u16StrLen;
104
105 u8c = *pcStr++;
106 if (!u8c)
107 return (uint8 *) pcIn; // Trivial empty string case
108
109 u16StrLen = m2m_strlen(pcStr);
110 do {
111 uint8 u8Sc;
112
113 do {
114 u8Sc = *pcIn++;
115 if (!u8Sc)
116 return (uint8 *) 0;
117 } while (u8Sc != u8c);
118 } while (m2m_strncmp(pcIn, pcStr, u16StrLen) != 0);
119
120 return (uint8 *) (pcIn - 1);
121 }
122
m2m_memcmp(uint8 * pu8Buff1,uint8 * pu8Buff2,uint32 u32Size)123 sint8 m2m_memcmp(uint8 *pu8Buff1,uint8 *pu8Buff2 ,uint32 u32Size)
124 {
125 uint32 i;
126 sint8 s8Result = 0;
127 for(i = 0 ; i < u32Size ; i++)
128 {
129 if(pu8Buff1[i] != pu8Buff2[i])
130 {
131 s8Result = 1;
132 break;
133 }
134 }
135 return s8Result;
136 }
137
