没有与这些操作数匹配的=运算符

Question

总是显示没有与这些操作数匹配的=运算符，刚开始学编程，请帮忙解答

void write()
    {
        if (ctr_l1_wr_en.read() == false)return;
        unsigned int index = Cache_L2_address.read().range(7, 2);
        unsigned int tag = Cache_L2_address.read().range(13, 8);
        unsigned int value = ctr_l1_wr_addr.read();
        int i, j;
        //判断cache是否命中
        for (i = 0; i <= 3; i++)
        {
            if (Cache_data[index].unit[i].tag == tag && Cache_data[index].unit[i].valid == true)
            {
                Cache_data[index].unit[i].changed = true;
                Cache_data[index].unit[i].data = value;
                update_used(Cache_data[index].lastused, i);
                return;
            }
        }
        //Cache miss进行更新操作
        insert_newdata(index, tag, value);
    }
    //L1Mem模块
    //从L2中读入数据
    void ctr_l2_rd_en(unsigned int index, unsigned int road, unsigned int addr)
    {
        read_times++;
        Cache_data[index].unit[road].data = L2_data[addr/4];
        return;
    }

Answer 1

看看具体报错的代码行，=赋值两边类型不匹配