22 lines
500 B
C
22 lines
500 B
C
#include <Led.h>
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//亮码地址0-7，是否使能
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void Led_Disp(unsigned char addr,enable)
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{
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//保证这两个变量的值不会因为函数结束而改变
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static unsigned char temp = 0x00;
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static unsigned char temp_old = 0xff;
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//更改当前状态
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if(enable)
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temp |= 0x01 << addr;
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else
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temp &= ~(0x01 << addr);
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//当前状态与之前的状态不同则进行操作更新led
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if(temp != temp_old)
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{
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P0 = ~temp;
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P2 = P2 & 0x1f | 0x80;
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P2 &= 0x1f;
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temp_old = temp;
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}
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}
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