久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费

標題: 關于stm32f0單片機獲取唯一ID的一個好用的函數,可選擇長度 [打印本頁]

作者: fx5700 時間: 2018-7-12 15:50
標題: 關于stm32f0單片機獲取唯一ID的一個好用的函數,可選擇長度
mbyte可以選擇4/8/12/16字節,方便不同項目使用,返回ID在mc_code里面保存

void GetMCCode(uint8_t mbyte,uint8_t *mc_code)
{
uint32_t Lock_Code;
uint32_t CpuID[3];

//獲取
CpuID[0]=*(__IO uint32_t*)(0x1ffff7ac);
CpuID[1]=*(__IO uint32_t*)(0x1ffff7b0);
CpuID[2]=*(__IO uint32_t*)(0x1ffff7b4);
//
if(mbyte==4)
{
Lock_Code=(CpuID[0]>>1)^(CpuID[1]>>2)^(CpuID[2]>>3);
mc_code[0] = (uint8_t)Lock_Code;
mc_code[1] = (uint8_t)(Lock_Code>>8);
mc_code[2] = (uint8_t)(Lock_Code>>16);
mc_code[3] = (uint8_t)(Lock_Code>>24);
}
else if(mbyte==8)
{
Lock_Code=(CpuID[0]>>1)^(CpuID[1]>>2)^(CpuID[2]>>3);
//
mc_code[0] = (uint8_t)Lock_Code;
mc_code[1] = (uint8_t)(Lock_Code>>8);
mc_code[2] = (uint8_t)(Lock_Code>>16);
mc_code[3] = (uint8_t)(Lock_Code>>24);
//
Lock_Code = ((CpuID[0]/10-1)*5) + (CpuID[1]>>5) + (CpuID[2]/9+2);
Lock_Code &= 0xFFFFF7FF;
//
mc_code[4] = (uint8_t)Lock_Code;
mc_code[5] = (uint8_t)(Lock_Code>>8);
mc_code[6] = (uint8_t)(Lock_Code>>16);
mc_code[7] = (uint8_t)(Lock_Code>>24);
}
else if(mbyte==12)
{
mc_code[0] = (uint8_t)CpuID[0];
mc_code[1] = (uint8_t)(CpuID[0]>>8);
mc_code[2] = (uint8_t)(CpuID[0]>>16);
mc_code[3] = (uint8_t)(CpuID[0]>>24);
//
mc_code[4] = (uint8_t)CpuID[1];
mc_code[5] = (uint8_t)(CpuID[1]>>8);
mc_code[6] = (uint8_t)(CpuID[1]>>16);
mc_code[7] = (uint8_t)(CpuID[1]>>24);
//
mc_code[8] = (uint8_t)CpuID[2];
mc_code[9] = (uint8_t)(CpuID[2]>>8);
mc_code[10]= (uint8_t)(CpuID[2]>>16);
mc_code[11]= (uint8_t)(CpuID[2]>>24);
}
else if(mbyte==16)
{
mc_code[0] = (uint8_t)CpuID[0];
mc_code[1] = (uint8_t)(CpuID[0]>>8);
mc_code[2] = (uint8_t)(CpuID[0]>>16);
mc_code[3] = (uint8_t)(CpuID[0]>>24);
//
mc_code[4] = (uint8_t)CpuID[1];
mc_code[5] = (uint8_t)(CpuID[1]>>8);
mc_code[6] = (uint8_t)(CpuID[1]>>16);
mc_code[7] = (uint8_t)(CpuID[1]>>24);
//
mc_code[8] = (uint8_t)CpuID[2];
mc_code[9] = (uint8_t)(CpuID[2]>>8);
mc_code[10]= (uint8_t)(CpuID[2]>>16);
mc_code[11]= (uint8_t)(CpuID[2]>>24);
//
Lock_Code = ((CpuID[0]/10-1)*5) + (CpuID[1]>>5) + (CpuID[2]/9+2);
Lock_Code &= 0xFFFFF7FF;
//
mc_code[12] = (uint8_t)Lock_Code;
mc_code[13] = (uint8_t)(Lock_Code>>8);
mc_code[14] = (uint8_t)(Lock_Code>>16);
mc_code[15] = (uint8_t)(Lock_Code>>24);
}
}

歡迎光臨 (http://m.zg4o1577.cn/bbs/)