1、單片機控制白熾燈光漸變的C程序#include <reg52.h>#define uint unsigned int#define uchar unsigned char#define ON 0#define OFF 1void main()    TMOD = 0x11;    EA=1;    TCON=0x05;            &#

2、160;     2 / 9    for(;)            DispInfo( );        Display( );        keyscan( );    void

3、keyscan()                           if(S1_num=0)            if (S2=0)       

4、; mDelay(10);        if (S2=0)        if (K_Less30s>59)                 LampGradual();       

5、0;    void LampGradual()    Gradual=Lamp1;    K_Less30s=0;               /按開關燈鍵間隔小于30秒標記及時長記錄    EX0=1;        

6、;             /開外部中斷0    ET0=1;    TR0=1;    ET1=1;                     /定時器1中斷允

7、許    IT0=1;                       /INT0為下降沿觸發（以前忘了這個，漸變時卻不亮，呵呵）    On_Init=7000;           

8、0; /漸開定時觸發初始化為10ms,并遞減    Off_Init=4000;            /漸關定時觸發初始化為0ms,并遞增/  *  void timer0() interrupt 1                /實時

9、時鐘中斷程序    TH0=(65536-50000)/256;    TL0=(65536-50000)%256;    Time50ms+;         if(Time50ms=20)                 &#

10、160;   /實時時鐘走時累計                        Time50ms=0;              Sec+;     

11、         if(K_Less30s<60) /| OnTime=1 | OffTime=1           /*按鍵后或定時時間到后開關燈*                     

12、           K_Less30s+;                  if(K_Less30s=30)                

13、60; /30秒后*                                        K_Less30s=60;     &#

14、160;            /封閉漸開漸關操作,                      Lamp1=Gradual;    EX0=0;      &#

15、160;           /30秒后關中斷    ET1=0;                  /30秒后關定時器1    ET0=0;    TR0=0;  &#

16、160;                                         void INT0_AC0() interrupt 0    

17、;    /外部中斷0，AC過0時，50Hz交流電每秒過零100次,每次間隔10ms    ET1=1;                           /定時器1中斷允許    TR1=0;  

18、                         /定時器1開始計時    if(Gradual=OFF)                /漸開 &#

19、160;          -On_Init;              /On_Init-=2;         /每10ms        a=(65536-On_Init)/256; 

20、 /定時初值        b=(65536-On_Init)%256;        if(Gradual=ON)                /漸關            +Off_Init;          /Off_Init+=2;        a=(65536-Off_Init)/256;        b=(65536-Off_Init)%256; /