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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; 
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4个回答
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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
最佳答案
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程序发上来怎么变了
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1 条评论
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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; |
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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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