File content as of revision 0:32964091adbf:

#include "sys.h"


unsigned short ccitt_table[256] = {
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
};

unsigned short crc_ccitt(unsigned char *q, int len)
{
    unsigned short crc = 0;

    while (len-- > 0)
    crc = ccitt_table[(crc >> 8 ^ *q++) & 0xff] ^ (crc << 8);
    return ~crc;
}


/**
*@brief     把十进制数转化为字符型
*@param     c:要转化十进制数据
*@return    返回一个字符型数据
*/
char c2d(uint8_t c)
{
    if (c >= '0' && c <= '9')
        return c - '0';
    if (c >= 'a' && c <= 'f')
        return 10 + c -'a';
    if (c >= 'A' && c <= 'F')
        return 10 + c -'A';

    return (char)c;
}

/**
*@brief     字符转转化为8位整型函数
*@param     str:要转化字符串， base:
*@return    num:返回转化后的整型数
*/
uint16_t atoi16(char* str,uint16_t base )
{
  unsigned int num = 0;
  while (*str !=0)
          num = num * base + c2d(*str++);
  return num;
}


/**
*@brief     把字符串转化为十进制或十六进制数函数
*@param     str:要转化字符串， len：整型数长度
*@return    成功 - 1, 失败 - 0
*/
int validatoi(char* str, int base,int* ret)
{
  int c;
  char* tstr = str;
  if(str == 0 || *str == '\0') return 0;
  while(*tstr != '\0')
  {
    c = c2d(*tstr);
    if( c >= 0 && c < base) tstr++;
    else    return 0;
  }
  
  *ret = atoi16(str,base);
  return 1;
}

void HexToStr(char *pbDest, char *pbSrc, int nLen)
{
    char    ddl,ddh;
    int i;

    for (i=0; i<nLen; i++)
    {
        ddh = 48 + pbSrc[i] / 16;
        ddl = 48 + pbSrc[i] % 16;
        if (ddh > 57) ddh = ddh + 7;
        if (ddl > 57) ddl = ddl + 7;
        pbDest[i*2] = ddh;
        pbDest[i*2+1] = ddl;
    }
    
    pbDest[nLen*2] = '\0';
}

void HexOutput(const char* buf, int len)
{
    int i=0;
    printf("The Hex output of data :\n0x");
    for(i=0; i<len; ++i)
    {
        unsigned char c = buf[i]; // must use unsigned char to print >128 value
        if( c< 16)
        {
            printf("0%x ", c);
        }
        else
        {
            printf("%x ", c);
        }
    }
    printf("\n");
}


void reverse_u64(uint64_t *temp)
{
    char temp_str[8];
    memset(temp_str,0x00,8);
    //printf("old data\n");
    //HexOutput((char *)temp,8);
    
    memcpy(temp_str+7,(char*)temp,1);
    memcpy(temp_str+6,(char*)temp+1,1);
    memcpy(temp_str+5,(char*)temp+2,1);
    memcpy(temp_str+4,(char*)temp+3,1);
  memcpy(temp_str+3,(char*)temp+4,1);
  memcpy(temp_str+2,(char*)temp+5,1);
    memcpy(temp_str+1,(char*)temp+6,1);
    memcpy(temp_str,(char*)temp+7,1);
    
    memcpy((char *)temp,temp_str,8);
    
    //printf("new data\n");
    //HexOutput((char *)temp,8);
}


void reverse_u32(uint32_t *temp)
{
    char temp_str[4];
    memset(temp_str,0x00,4);
    //USARTX_SendData(USART1,(char *)temp,4);
    
  memcpy(temp_str+3,(char*)temp,1);
  memcpy(temp_str+2,(char*)temp+1,1);
    memcpy(temp_str+1,(char*)temp+2,1);
    memcpy(temp_str,(char*)temp+3,1);
    
    memcpy((char *)temp,temp_str,4);
    
    //USARTX_SendData(USART1,(char *)temp,4);
}

void reverse_u16(uint16_t *temp)
{
    char temp_str[2];
    memset(temp_str,0x00,2);
    //USARTX_SendData(USART1,(char *)temp,2);
    
    memcpy(temp_str+1,(char*)temp,1);
    memcpy(temp_str,(char*)temp+1,1);
    
    memcpy((char *)temp,temp_str,2);
    
    //USARTX_SendData(USART1,(char *)temp,2);
}


//设置栈顶地址
//addr:栈顶地址
__asm void MSR_MSP(u32 addr) 
{
    MSR MSP, r0             //set Main Stack value
    BX r14
}