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楼主 |
发表于 2018-3-17 11:00:27
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main.c
- while (1)
- {
- bsp_Lcd_HC595_Display();
-
- }
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bsp_lcd_hc595.c
- /*------------------------------------------------
- 发送字节程序
- ------------------------------------------------*/
- void SendByte(Uint8 dat)
- {
- Uint8 i;
-
- for(i=0;i<8;i++)
- {
- LCD_HC595_CLK_LOW();
- if (dat&0x80)
- {
- LCD_HC595_SER_HIGH();
- }else{
- LCD_HC595_SER_LOW();
- }
- dat<<=1;
- LCD_HC595_CLK_HIGH();
- }
-
- }
- /*------------------------------------------------
- 发送双字节程序
- 595级联,n个595,就需要发送n字节后锁存
- ------------------------------------------------*/
- void Send2Byte(Uint8 dat1,Uint8 dat2)
- {
- SendByte(dat1);
- SendByte(dat2);
- }
- /*------------------------------------------------
- 595锁存程序
- 595级联发送数据后,锁存有效
- ------------------------------------------------*/
- void Out595(void)
- {
- LCD_HC595_ST_HIGH();
- bsp_DelayUS(20); //_nop_();
- LCD_HC595_ST_LOW();
- }
- void bsp_Lcd_HC595_Display(void)
- {
- Send2Byte(WeiMa[3],0x00);
- Out595();
- Send2Byte(WeiMa[2],0x00);
- Out595();
- Send2Byte(WeiMa[1],DuanMa[0]); //O
- Out595();
- Send2Byte(WeiMa[0],DuanMa[22]); //N
- Out595();
- }
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