STM32F103 CRC1616位校验程序

sdzhang1

野火给的例程是32位的硬件CRC的校验程序 ，而且使用的是查表法做的，可我的上位机传给我的是16位校验码，应该怎样改才能成16位的？
uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength)
{
  uint32_t index = 0;

  for(index = 0; index < BufferLength; index++)
  {
    CRC->DR = pBuffer[index];
  }
  return (CRC->DR);
}


static const uint32_t aDataBuffer[] =
  {
    0x00001021, 0x20423063, 0x408450a5, 0x60c670e7, 0x9129a14a, 0xb16bc18c,
    0xd1ade1ce, 0xf1ef1231, 0x32732252, 0x52b54294, 0x72f762d6, 0x93398318,
    0xa35ad3bd, 0xc39cf3ff, 0xe3de2462, 0x34430420, 0x64e674c7, 0x44a45485,
    0xa56ab54b, 0x85289509, 0xf5cfc5ac, 0xd58d3653, 0x26721611, 0x063076d7,
    0x569546b4, 0xb75ba77a, 0x97198738, 0xf7dfe7fe, 0xc7bc48c4, 0x58e56886,
    0x78a70840, 0x18612802, 0xc9ccd9ed, 0xe98ef9af, 0x89489969, 0xa90ab92b,
    0x4ad47ab7, 0x6a961a71, 0x0a503a33, 0x2a12dbfd, 0xfbbfeb9e, 0x9b798b58,
    0xbb3bab1a, 0x6ca67c87, 0x5cc52c22, 0x3c030c60, 0x1c41edae, 0xfd8fcdec,
    0xad2abd0b, 0x8d689d49, 0x7e976eb6, 0x5ed54ef4, 0x2e321e51, 0x0e70ff9f,
    0xefbedfdd, 0xcffcbf1b, 0x9f598f78, 0x918881a9, 0xb1caa1eb, 0xd10cc12d,
    0xe16f1080, 0x00a130c2, 0x20e35004, 0x40257046, 0x83b99398, 0xa3fbb3da,
    0xc33dd31c, 0xe37ff35e, 0x129022f3, 0x32d24235, 0x52146277, 0x7256b5ea,
    0x95a88589, 0xf56ee54f, 0xd52cc50d, 0x34e224c3, 0x04817466, 0x64475424,
    0x4405a7db, 0xb7fa8799, 0xe75ff77e, 0xc71dd73c, 0x26d336f2, 0x069116b0,
    0x76764615, 0x5634d94c, 0xc96df90e, 0xe92f99c8, 0xb98aa9ab, 0x58444865,
    0x78066827, 0x18c008e1, 0x28a3cb7d, 0xdb5ceb3f, 0xfb1e8bf9, 0x9bd8abbb,
    0x4a755a54, 0x6a377a16, 0x0af11ad0, 0x2ab33a92, 0xed0fdd6c, 0xcd4dbdaa,
    0xad8b9de8, 0x8dc97c26, 0x5c644c45, 0x3ca22c83, 0x1ce00cc1, 0xef1fff3e,
    0xdf7caf9b, 0xbfba8fd9, 0x9ff86e17, 0x7e364e55, 0x2e933eb2, 0x0ed11ef0
  };


int main(void)
{
        
        LED_GPIO_Config();
        
  /*3&#245;ê&#188;&#187;ˉUSART￡&#172;&#197;&#228;&#214;&#195;&#196;￡ê&#189;&#206;a 115200 8-N-1*/
  Debug_USART_Config();

        printf("\r\n &#187;&#182;ó-ê1ó&#195;±ü&#187;e  STM32 F429 &#191;a·￠°&#229;&#161;￡\r\n");
        
        
        
        /* ê1&#196;üCRCê±&#214;ó */
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_CRC, ENABLE);        
        
        /*&#188;&#198;&#203;&#227;aDataBufferμ&#196;CRC&#214;μ￡&#172;sizeò&#212; ×&#214; &#206;aμ￥&#206;&#187; */
  uwCRCValue = CRC_CalcBlockCRC((uint32_t *)aDataBuffer, sizeof(aDataBuffer)/4);
        
        printf("\r\n CRC&#214;μ =%x ",uwCRCValue);
        
  while(1)
        {        }

}

随风

没用过这功能，看看寄存器配置可不可以设置位数的

仲楚楚

完全不懂，帮顶

sdzhang1

随风 发表于 2016-8-22 16:59
没用过这功能，看看寄存器配置可不可以设置位数的

资料显示只能是32位的