打印指針指向的內容，PrintBuffer(), printdata()函數

經常使用的代碼：

void PrintBuffer(void* pBuff, unsigned int nLen)
{
    if (NULL == pBuff || 0 == nLen)
    {
        return;
    }

    const int nBytePerLine = 16;
    unsigned char* p = (unsigned char*)pBuff;
    char szHex[3*nBytePerLine+1] = {0};
	unsigned int i;
	
    printf("-----------------begin-------------------\n");
    for (i=0; i<nLen; ++i)
    {
        int idx = 3 * (i % nBytePerLine);
        if (0 == idx)
        {
            memset(szHex, 0, sizeof(szHex));
        }
#ifdef WIN32
        sprintf_s(&szHex[idx], 4, "%02x ", p[i]);// buff長度要多傳入1個字節
#else
        snprintf(&szHex[idx], 4, "%02x ", p[i]); // buff長度要多傳入1個字節
#endif
        
        // 以16個字節爲一行，進行打印
        if (0 == ((i+1) % nBytePerLine))
        {
            printf("%s\n", szHex);
        }
    }

    // 打印最後一行未滿16個字節的內容
    if (0 != (nLen % nBytePerLine))
    {
        printf("%s\n", szHex);
    }

    printf("------------------end-------------------\n");

}

 

static void printdata(u8 *pbuf, u32 len)
{
	u32 i, val;


	for (i = 0; (i + 4) <= len; i += 4) {
		printk("%08X", *(u32 *)(pbuf + i));
		if ((i + 4) & 0x1F)
			printk(" ");
		else
			printk("\n");
	}

	if (i < len) {
#ifdef CONFIG_BIG_ENDIAN
		for (; i < len, i++)
			printk("%02X", pbuf + i);
#else /* CONFIG_LITTLE_ENDIAN */
#if 0
		val = 0;
		_rtw_memcpy(&val, pbuf + i, len - i);
		printk("%8X", val);
#else
		u8 str[9];
		u8 n;
		val = 0;
		n = len - i;
		_rtw_memcpy(&val, pbuf + i, n);
		sprintf(str, "%08X", val);
		n = (4 - n) * 2;
		printk("%8s", str + n);
#endif
#endif /* CONFIG_LITTLE_ENDIAN */
	}
	printk("\n");
}