133 lines
3.2 KiB
C
133 lines
3.2 KiB
C
/**
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*
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* \file
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*
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* \brief This module contains common APIs declarations.
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*
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* Copyright (c) 2015 Atmel Corporation. All rights reserved.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* \asf_license_stop
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*
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*/
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#include "common/include/nm_common.h"
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void m2m_memcpy(uint8 *pDst, uint8 *pSrc, uint32 sz)
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{
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if (sz == 0)
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return;
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do {
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*pDst = *pSrc;
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pDst++;
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pSrc++;
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} while (--sz);
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}
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uint8 m2m_checksum(uint8 *buf, int sz)
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{
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uint8 cs = 0;
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while (--sz) {
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cs ^= *buf;
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buf++;
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}
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return cs;
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}
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void m2m_memset(uint8 *pBuf, uint8 val, uint32 sz)
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{
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if (sz == 0)
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return;
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do {
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*pBuf = val;
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pBuf++;
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} while (--sz);
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}
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uint16 m2m_strlen(uint8 *pcStr)
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{
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uint16 u16StrLen = 0;
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while (*pcStr) {
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u16StrLen++;
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pcStr++;
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}
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return u16StrLen;
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}
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uint8 m2m_strncmp(uint8 *pcS1, uint8 *pcS2, uint16 u16Len)
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{
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for (; u16Len > 0; pcS1++, pcS2++, --u16Len)
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if (*pcS1 != *pcS2)
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return ((*(uint8 *)pcS1 < *(uint8 *)pcS2) ? -1 : +1);
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else if (*pcS1 == '\0')
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return 0;
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return 0;
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}
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/* Finds the occurance of pcStr in pcIn.
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If pcStr is part of pcIn it returns a valid pointer to the start of pcStr within pcIn.
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Otherwise a NULL Pointer is returned.
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*/
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uint8 *m2m_strstr(uint8 *pcIn, uint8 *pcStr)
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{
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uint8 u8c;
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uint16 u16StrLen;
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u8c = *pcStr++;
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if (!u8c)
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return (uint8 *)pcIn; // Trivial empty string case
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u16StrLen = m2m_strlen(pcStr);
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do {
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uint8 u8Sc;
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do {
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u8Sc = *pcIn++;
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if (!u8Sc)
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return (uint8 *)0;
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} while (u8Sc != u8c);
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} while (m2m_strncmp(pcIn, pcStr, u16StrLen) != 0);
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return (uint8 *)(pcIn - 1);
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}
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sint8 m2m_memcmp(uint8 *pu8Buff1, uint8 *pu8Buff2, uint32 u32Size)
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{
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uint32 i;
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sint8 s8Result = 0;
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for (i = 0; i < u32Size; i++) {
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if (pu8Buff1[i] != pu8Buff2[i]) {
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s8Result = 1;
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break;
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}
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}
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return s8Result;
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}
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