21 lines
491 B
C
21 lines
491 B
C
#include "Led.h"
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/// @brief Led显示
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/// @param addr 需要书写的Led的位置0-7
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/// @param enable 是否点亮 0灭 1亮
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void Led_Disp(unsigned char addr, unsigned char enable)
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{
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static unsigned char temp = 0x00;
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static unsigned char temp_old = 0xff;
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// 指定位置点亮
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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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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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} |