数组强制转换的问题

发布于 2014-08-26 16:14:37 浏览：3580 订阅该版

自定义的结构体
```typedef struct struct_frame
{
    rt_uint8_t head;//头0x0f
    rt_uint32_t length;//长度
    rt_uint16_t crc;//crc16校验 //7个字节
    rt_uint8_t attribute;//属性
    rt_uint16_t frame_seq_num;//帧序号
    rt_uint8_t src;//源地址
    rt_uint8_t dst;//目标地址
    rt_uint8_t object;//对象
    rt_uint8_t fun_name;//函数名
    rt_uint16_t param_length;//参数字节总数
    rt_uint8_t  *param;//参数

} zb_frame_t;```
出问题的代码
```zb_frame_t *whole_frame = (zb_frame_t *)frame;
//rt_uint8_t *p = (rt_uint8_t*)whole_frame;
//for(rt_uint16_t j=0;j<len+5;j++)
//rt_kprintf("%02x ",*(p++));
rt_kprintf("head=%02x
",whole_frame->head);
rt_kprintf("length=%08x
",whole_frame->length);
rt_kprintf("crc=%04x
",whole_frame->crc);
rt_kprintf("attr=%02x
",whole_frame->attribute);
rt_kprintf("frame_seq_num=%04x
",whole_frame->frame_seq_num);
rt_kprintf("src=%02x
",whole_frame->src);
rt_kprintf("dst=%02x
",whole_frame->dst);
rt_kprintf("object=%02x
",whole_frame->object);
rt_kprintf("fun_name=%02x
",whole_frame->fun_name);
rt_kprintf("param_length=%04x
",whole_frame->param_length);```

frame数组字节为0f 0b 00 0b 00 49 42 01 00 00 02 03 04 00 00 00

可是串口打印出来的信息是：

```head=0f

length=01424900

crc=0000

attr=02

frame_seq_num=0004

src=00

dst=00

object=a8

fun_name=1f

param_length=0000```