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发表于 2018-11-16 15:50:28
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显示全部楼层
转一个smset的GOTO版
#include <stc89c51.h>
#define MAXTASKS 3
//-------------小小调度器 goto版本----begin---------------------------------------
//注意咯： 这个版本,不再基于ProtoThread 原理！！！！ 任务中可以随意使用switch case啦！！！
//以后各位基于goto 机制的diy版本，不用再称为基于ProtoThread。
#define _SS(N) static unsigned char STATE=0; switch(STATE){ STATES##N;}
#define _EE ; STATE=0; return 255;
#define WaitX(A,tickets) do {STATE=A; return tickets ;} while(0); ST(A):
#define RunTask(TaskName,TaskID) do { if (timers[TaskID]==0) timers[TaskID]=TaskName(); } while(0);
#define RunTaskA(TaskName,TaskID) { if (timers[TaskID]==0) {timers[TaskID]=TaskName(); continue;} } //?°??μ?è???ó??è±￡?¤?′DD
#define CallSubX(A,SubTaskName) do {unsigned char currdt; STATE=A; return 0; ST(A): currdt=SubTaskName(); if(currdt!=255) return currdt;} while(0);
#define InitTasks() {unsigned char i; for(i=MAXTASKS;i>0 ;i--) timers[i-1]=0; }
#define UpdateTimers() {unsigned char i; for(i=MAXTASKS;i>0 ;i--){if((timers[i-1]!=0)&&(timers[i-1]!=255)) timers[i-1]--;}}
#define EXIT do {STATE=0; return 255;} while(0);
#define RESTART do {STATE=0; return 0;} while(0);
volatile unsigned char timers[MAXTASKS];
#define ST(A) ST##_##A
#define GO(A) case A: goto ST(A);
#define STATES1 GO(1);
#define STATES2 GO(1);GO(2);
#define STATES3 GO(1);GO(2);GO(3);
#define STATES4 GO(1);GO(2);GO(3);GO(4);
#define STATES5 GO(1);GO(2);GO(3);GO(4);GO(5);
#define STATES6 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);
#define STATES7 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);
#define STATES8 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);
#define STATES9 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);GO(9);
#define STATES10 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);GO(9);GO(10);
#define STATES11 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);GO(9);GO(10);GO(11);
#define STATES12 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);GO(9);GO(10);GO(11);GO(12);
#define STATES13 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);GO(9);GO(10);GO(11);GO(12);GO(13);
#define STATES14 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);GO(9);GO(10);GO(11);GO(12);GO(13);GO(14);
#define STATES15 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);GO(9);GO(10);GO(11);GO(12);GO(13);GO(14);GO(15);
#define STATES16 GO(1);GO(2);GO(3);GO(4);GO(5);GO(6);GO(7);GO(8);GO(9);GO(10);GO(11);GO(12);GO(13);GO(14);GO(15);GO(16);
//#define STATESXX ....若嫌状态不够，还可再加哦，反正是宏，再多都不要钱的。
#define SEM unsigned int
#define InitSem(sem) sem=0;
#define WaitSem(A,sem) do{ sem=1; WaitX(A,0); if (sem>0) return 1;} while(0);
#define WaitSemX(A,sem,tickets) do { sem=tickets+1; WaitX(A,0); if(sem>1){ sem--; return 1;} } while(0);
#define SendSem(sem) do {sem=0;} while(0);
//------------小小调度器 goto版本 end------------------------------------------
sbit LED1 = P2^1;
sbit LED2 = P2^2;
sbit LED0 = P2^5;
unsigned char task0(){
_SS(1) //本任务用了1个wait,所以这里就是_SS(1)
while(1){
WaitX(1,50);
LED0=!LED0;
}
_EE
}
unsigned char task1(){
_SS(1) //本任务用了1个wait,所以这里就是_SS(1)
while(1){
WaitX(1,100);
LED1=!LED1;
}
_EE
}
unsigned char task2(){
_SS(3) //本任务用了3个wait,所以这里就是_SS(3)
while(1){
WaitX(1,100);
LED2=!LED2;
WaitX(2,100);
LED2=!LED2;
WaitX(3,100);
LED2=!LED2;
}
_EE
}
void InitT0()
{
TMOD = 0x21;
IE |= 0x82; // 12t
TL0=0Xff;
TH0=0XDB;
TR0 = 1;
}
void INTT0(void) interrupt 1 using 1
{
TL0=0Xff; //10ms ??
TH0=0XDB;//b7;
UpdateTimers();
RunTask(task0,0);//高级别任务，在中断里执行，可剥夺低级别任务。
}
void main()
{
InitT0();
InitTasks(); //?????,?????timers??
while(1){
// RunTask(task0,0);
RunTaskA(task1,1);//??1?????2??????
RunTaskA(task2,2);//??2????????
}
}
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楼主
，以后有时间的时候也仔细看看。
