求问union里面包含struct的用法

一个段码屏驱动多端数码管程序，这个LCD_LgcBuf[15]有什么含义吗

typedef union {

unsigned char LCD_LgcBuf[15];//这段代码什么意思

struct

unsigned char Sign_T5:1;

unsigned char Sign_T16:1;

unsigned char Sign_4F:1;

unsigned char Sign_4E:1;

}Sign_SEG1_2;

{

unsigned char Sign_4B:1;

unsigned char Sign_4D:1;

unsigned char Sign_5G:1;

unsigned char Sign_T18:1;

struct

unsigned char Sign_5A:1;

unsigned char Sign_5C:1;

unsigned char Sign_6F:1;

unsigned char Sign_6E:1;

}Sign_SEG5_6;

{

unsigned char Sign_6B:1;

unsigned char Sign_6D:1;

unsigned char Sign_7G:1;

unsigned char Sign_COL:1;

struct

unsigned char Sign_7A:1;

unsigned char Sign_7C:1;

unsigned char Sign_8F:1;

unsigned char Sign_8E:1;

}Sign_SEG9_10;

{

unsigned char Sign_8B:1;

unsigned char Sign_8D:1;

unsigned char Sign_9G:1;

unsigned char Sign_P3:1;

struct

unsigned char Sign_9A:1;

unsigned char Sign_9C:1;

unsigned char Sign_10F:1;

unsigned char Sign_10E:1;

}Sign_SEG13_14;

{

unsigned char Sign_10B:1;

unsigned char Sign_10D:1;

unsigned char Sign_11G:1;

unsigned char Sign_P5:1;

struct

unsigned char Sign_11A:1;

unsigned char Sign_11C:1;

unsigned char Sign_T22:1;

unsigned char Sign_T23:1;

}Sign_SEG17_18;

{

unsigned char Sign_T7:1;

unsigned char Sign_T9:1;

unsigned char Sign_T12:1;

unsigned char Sign_T10:1;

struct

unsigned char Sign_3A:1;

unsigned char Sign_3C:1;

unsigned char Sign_3F:1;

unsigned char Sign_3E:1;

}Sign_SEG21_22;

{

unsigned char Sign_2B:1;

unsigned char Sign_2D:1;

unsigned char Sign_2G:1;

//unsigned char Sign_:1;

struct

unsigned char Sign_1A:1;

unsigned char Sign_1C:1;

unsigned char Sign_1F:1;

unsigned char Sign_1E:1;

}Sign_SEG25_26;

{

unsigned char Sign_T2:1;

unsigned char Sign_T3:1;

unsigned char Sign_S11:1;

unsigned char Sign_S9:1;

struct

unsigned char Sign_S5:1;

unsigned char Sign_S7:1;

unsigned char Sign_S4:1;

unsigned char Sign_S2:1;

}Sign_SEG29_30;

}GStr_LcdBuf;

最佳答案

unsigned char LCD_LgcBuf[15]这个里面赋值，下面的结构里面就有相应拆分好了的数值；
如果下面各个结构里面赋值了，那么你这个数组里面也有值了

订单

2019-3-28 09:51:08

程序发上来怎么变了

1

订单: typedef  union {
     unsigned char  LCD_LgcBuf[15];
struct{
struct
{
unsigned char Sign_T5:1;
unsigned char Sign_T15:1;
unsigned char Sign_T16:1;
unsigned char Sign_T17:1;
unsigned char Sign_4F:1;
unsigned char Sign_4G:1;
unsigned char Sign_4E:1;
unsigned char Sign_T19:1;
}Sign_SEG1_2;
      struct
{
unsigned char Sign_4A:1;
unsigned char Sign_4B:1;
unsigned char Sign_4C:1;
unsigned char Sign_4D:1;
unsigned char Sign_5F:1;
unsigned char Sign_5G:1;
unsigned char Sign_5E:1;
unsigned char Sign_T18:1;
}Sign_SEG3_4;
      struct
{
unsigned char Sign_5A:1;
unsigned char Sign_5B:1;
unsigned char Sign_5C:1;
unsigned char Sign_5D:1;
unsigned char Sign_6F:1;
unsigned char Sign_6G:1;
unsigned char Sign_6E:1;
unsigned char Sign_T21:1;
}Sign_SEG5_6;
struct
{
unsigned char Sign_6A:1;
unsigned char Sign_6B:1;
unsigned char Sign_6C:1;
unsigned char Sign_6D:1;
unsigned char Sign_7F:1;
unsigned char Sign_7G:1;
unsigned char Sign_7E:1;
unsigned char Sign_COL:1;
}Sign_SEG7_8;
      struct
{
unsigned char Sign_7A:1;
unsigned char Sign_7B:1;
unsigned char Sign_7C:1;
unsigned char Sign_7D:1;
unsigned char Sign_8F:1;
unsigned char Sign_8G:1;
unsigned char Sign_8E:1;
unsigned char Sign_P2:1;
}Sign_SEG9_10;
struct
{
unsigned char Sign_8A:1;
unsigned char Sign_8B:1;
unsigned char Sign_8C:1;
unsigned char Sign_8D:1;
unsigned char Sign_9F:1;
unsigned char Sign_9G:1;
unsigned char Sign_9E:1;
unsigned char Sign_P3:1;
}Sign_SEG11_12;
struct
{
unsigned char Sign_9A:1;
unsigned char Sign_9B:1;
unsigned char Sign_9C:1;
unsigned char Sign_9D:1;
unsigned char Sign_10F:1;
unsigned char Sign_10G:1;
unsigned char Sign_10E:1;
unsigned char Sign_P4:1;
}Sign_SEG13_14;
struct
{
unsigned char Sign_10A:1;
unsigned char Sign_10B:1;
unsigned char Sign_10C:1;
unsigned char Sign_10D:1;
unsigned char Sign_11F:1;
unsigned char Sign_11G:1;
unsigned char Sign_11E:1;
unsigned char Sign_P5:1;
}Sign_SEG15_16;
struct
{
unsigned char Sign_11A:1;
unsigned char Sign_11B:1;
unsigned char Sign_11C:1;
unsigned char Sign_11D:1;
unsigned char Sign_T22:1;
unsigned char Sign_T20:1;
unsigned char Sign_T23:1;
unsigned char Sign_T24:1;
}Sign_SEG17_18;
struct
{
unsigned char Sign_T6:1;
unsigned char Sign_T7:1;
unsigned char Sign_T8:1;
unsigned char Sign_T9:1;
unsigned char Sign_T13:1;
unsigned char Sign_T12:1;
unsigned char Sign_T11:1;
unsigned char Sign_T10:1;
}Sign_SEG19_20;
struct
{
unsigned char Sign_3A:1;
unsigned char Sign_3B:1;
unsigned char Sign_3C:1;
unsigned char Sign_3D:1;
unsigned char Sign_3F:1;
unsigned char Sign_3G:1;
unsigned char Sign_3E:1;
unsigned char Sign_P1:1;
}Sign_SEG21_22;
struct
{
unsigned char Sign_2A:1;
unsigned char Sign_2B:1;
unsigned char Sign_2C:1;
unsigned char Sign_2D:1;
unsigned char Sign_2F:1;
unsigned char Sign_2G:1;
unsigned char Sign_2E:1;
//unsigned char Sign_:1;
}Sign_SEG23_24;
struct
{
unsigned char Sign_1A:1;
unsigned char Sign_1B:1;
unsigned char Sign_1C:1;
unsigned char Sign_1D:1;
unsigned char Sign_1F:1;
unsigned char Sign_1G:1;
unsigned char Sign_1E:1;
//unsigned char Sign_:1;
}Sign_SEG25_26;
struct
{
unsigned char Sign_T1:1;
unsigned char Sign_T2:1;
unsigned char Sign_T4:1;
unsigned char Sign_T3:1;
unsigned char Sign_T14:1;
unsigned char Sign_S11:1;
unsigned char Sign_S10:1;
unsigned char Sign_S9:1;
}Sign_SEG27_28;
struct
{
unsigned char Sign_S5:1;
unsigned char Sign_S6:1;
unsigned char Sign_S7:1;
unsigned char Sign_S8:1;
unsigned char Sign_S4:1;
unsigned char Sign_S3:1;
unsigned char Sign_S2:1;
unsigned char Sign_S1:1;
}Sign_SEG29_30;
}Signs;
     }GStr_LcdBuf;

typedef  union {
     unsigned char  LCD_LgcBuf[15];
struct{
struct
{
unsigned char Sign_T5:1;
unsigned char Sign_T15:1;
unsigned char Sign_T16:1;
unsigned char Sign_T17:1;
unsigned char Sign_4F:1;
unsigned char Sign_4G:1;
unsigned char Sign_4E:1;
unsigned char Sign_T19:1;
}Sign_SEG1_2;
      struct
{
unsigned char Sign_4A:1;
unsigned char Sign_4B:1;
unsigned char Sign_4C:1;
unsigned char Sign_4D:1;
unsigned char Sign_5F:1;
unsigned char Sign_5G:1;
unsigned char Sign_5E:1;
unsigned char Sign_T18:1;
}Sign_SEG3_4;
      struct
{
unsigned char Sign_5A:1;
unsigned char Sign_5B:1;
unsigned char Sign_5C:1;
unsigned char Sign_5D:1;
unsigned char Sign_6F:1;
unsigned char Sign_6G:1;
unsigned char Sign_6E:1;
unsigned char Sign_T21:1;
}Sign_SEG5_6;
struct
{
unsigned char Sign_6A:1;
unsigned char Sign_6B:1;
unsigned char Sign_6C:1;
unsigned char Sign_6D:1;
unsigned char Sign_7F:1;
unsigned char Sign_7G:1;
unsigned char Sign_7E:1;
unsigned char Sign_COL:1;
}Sign_SEG7_8;
      struct
{
unsigned char Sign_7A:1;
unsigned char Sign_7B:1;
unsigned char Sign_7C:1;
unsigned char Sign_7D:1;
unsigned char Sign_8F:1;
unsigned char Sign_8G:1;
unsigned char Sign_8E:1;
unsigned char Sign_P2:1;
}Sign_SEG9_10;
struct
{
unsigned char Sign_8A:1;
unsigned char Sign_8B:1;
unsigned char Sign_8C:1;
unsigned char Sign_8D:1;
unsigned char Sign_9F:1;
unsigned char Sign_9G:1;
unsigned char Sign_9E:1;
unsigned char Sign_P3:1;
}Sign_SEG11_12;
struct
{
unsigned char Sign_9A:1;
unsigned char Sign_9B:1;
unsigned char Sign_9C:1;
unsigned char Sign_9D:1;
unsigned char Sign_10F:1;
unsigned char Sign_10G:1;
unsigned char Sign_10E:1;
unsigned char Sign_P4:1;
}Sign_SEG13_14;
struct
{
unsigned char Sign_10A:1;
unsigned char Sign_10B:1;
unsigned char Sign_10C:1;
unsigned char Sign_10D:1;
unsigned char Sign_11F:1;
unsigned char Sign_11G:1;
unsigned char Sign_11E:1;
unsigned char Sign_P5:1;
}Sign_SEG15_16;
struct
{
unsigned char Sign_11A:1;
unsigned char Sign_11B:1;
unsigned char Sign_11C:1;
unsigned char Sign_11D:1;
unsigned char Sign_T22:1;
unsigned char Sign_T20:1;
unsigned char Sign_T23:1;
unsigned char Sign_T24:1;
}Sign_SEG17_18;
struct
{
unsigned char Sign_T6:1;
unsigned char Sign_T7:1;
unsigned char Sign_T8:1;
unsigned char Sign_T9:1;
unsigned char Sign_T13:1;
unsigned char Sign_T12:1;
unsigned char Sign_T11:1;
unsigned char Sign_T10:1;
}Sign_SEG19_20;
struct
{
unsigned char Sign_3A:1;
unsigned char Sign_3B:1;
unsigned char Sign_3C:1;
unsigned char Sign_3D:1;
unsigned char Sign_3F:1;
unsigned char Sign_3G:1;
unsigned char Sign_3E:1;
unsigned char Sign_P1:1;
}Sign_SEG21_22;
struct
{
unsigned char Sign_2A:1;
unsigned char Sign_2B:1;
unsigned char Sign_2C:1;
unsigned char Sign_2D:1;
unsigned char Sign_2F:1;
unsigned char Sign_2G:1;
unsigned char Sign_2E:1;
//unsigned char Sign_:1;
}Sign_SEG23_24;
struct
{
unsigned char Sign_1A:1;
unsigned char Sign_1B:1;
unsigned char Sign_1C:1;
unsigned char Sign_1D:1;
unsigned char Sign_1F:1;
unsigned char Sign_1G:1;
unsigned char Sign_1E:1;
//unsigned char Sign_:1;
}Sign_SEG25_26;
struct
{
unsigned char Sign_T1:1;
unsigned char Sign_T2:1;
unsigned char Sign_T4:1;
unsigned char Sign_T3:1;
unsigned char Sign_T14:1;
unsigned char Sign_S11:1;
unsigned char Sign_S10:1;
unsigned char Sign_S9:1;
}Sign_SEG27_28;
struct
{
unsigned char Sign_S5:1;
unsigned char Sign_S6:1;
unsigned char Sign_S7:1;
unsigned char Sign_S8:1;
unsigned char Sign_S4:1;
unsigned char Sign_S3:1;
unsigned char Sign_S2:1;
unsigned char Sign_S1:1;
}Sign_SEG29_30;
}Signs;
     }GStr_LcdBuf;

jinyi7016

2019-3-28 14:08:26

LCD_LgcBuf[这个缓存，是与Sign_SEG27_28这些占用同一块空间的

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阿信509

最佳答案

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jinyi7016

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