main_entry.c

ARM7下的UC0S原代码

#include"s3c4510b_add.h"
#include "includes.h"
void InitUART(int Port,int Baudrate);
void PrintUART(int Port,char *s);
#define SYSCFG	0x03ff0000


#define INT_GLOBAL						(21)

#define TMOD				((volatile unsigned *)(SYSCFG+0x6000))  // timer mode register
#define TDATA0				((volatile unsigned *)(SYSCFG+0x6004))
#define TCNT0				((volatile unsigned *)(SYSCFG+0x600c))

#define COUNTDOWN	0x01effff0;
static int counter = 0;
void extern TimeISR(void);
unsigned Install_Handle(unsigned routine,unsigned *vector);
void UART0_Write(int Port,char c);

void Sleep(INT16U uSec)
{
	OSTimeDly((INT16U) (uSec));
}



void Task1(void * pParam)
{
	INTMSK=0x1ffbff;
	while(1)	
	{
		IOPMOD=0xff;
		IOPDATA=0xff;
		PrintUART(1,"@\n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@\n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@ task 1 running ... \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@    Q__Q    \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@   /____\\   \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@   \\____/   \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@    /\\/\\    \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@ __(\\\\//)__ \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@ >__/ww\\__< \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@\n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@ go to sleep 10 time-ticks\n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@\n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"@\n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		Sleep(5);
	}

}

/* Task2 print_user_input */
void Task2(void * pParam)
{
	while(1)	
	{
		PrintUART(1,"+++ \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++ \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++  task 2 running ... \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++  ╭︿︿︿╮ \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++ {/　o　o　\\} \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++  (　(oo)　) \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++      ︶ \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++ \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++  go to sleep 5 time-ticks\n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		PrintUART(1,"+++ \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);	
		PrintUART(1,"+++ \n" );
		UART0_Write(1,0x0d);
		UART0_Write(1,0x0a);
		Sleep(6);
	}
}


#define	N_TASKS			3	// Number of tasks
#define	TASK_STK_SIZE	1024		// Stack size, in sizeof OS_STK, or int 32bit
OS_STK	TaskStk[N_TASKS][TASK_STK_SIZE];	// Tasks stacks

void extern C_Entry(void)
{
	
	int	task_1 = 0;
	int	task_2 = 1;
    	unsigned *irqvec=(unsigned*)0x18;
	Install_Handle((unsigned)TimeISR,irqvec);	
	InitUART(1,0x500);  //19200bps  50MHz 0=COM1;1=COM2
	counter = 0;
	PrintUART(1,"start kernel ok!\n" );
	UART0_Write(1,0x0d);
	UART0_Write(1,0x0a);	

	OSInit();
	OSTaskCreate(Task1, &task_1, &TaskStk[0][TASK_STK_SIZE-1], 6);
	OSTaskCreate(Task2, &task_2, &TaskStk[1][TASK_STK_SIZE-1], 5);	
	OSStart();
}
	
void PrintUART(int Port,char *s)
{
	if(Port==0)
		for(;*s!='\0';s++)
			{
			for(;(!(USTAT0&0x40)););
			UTXBUF0=*s;
			}
	if(Port==1)
		for(;*s!='\0';s++)
			{
			for(;(!(USTAT1&0x40)););
			UTXBUF1=*s;
			
			}	
				
}


void InitUART(int Port,int Baudrate)
{
	if(Port==0)
		{
		ULCON0=0x03;
		UCON0=0x09;
		UBRDIV0=Baudrate;   
		}
	if(Port==1)
		{
		ULCON1=0x03;
		UCON1=0x09;
		UBRDIV1=Baudrate;   
		}

}

void UART0_Write(int Port,char c)
{
	if(Port==0)
		while(!(USTAT0&0x40));
			UTXBUF0=c;
	if(Port==1)
		while(!(USTAT1&0x40));
			UTXBUF1=c;

}


unsigned Install_Handle(unsigned routine,unsigned *vector)
{
unsigned vec,oldvect;
vec=((routine-(unsigned)vector-0x8)>>2);
if(vec&0xff000000)
{

}
vec=0xea000000|vec;
oldvect=*vector;
*vector=vec;
return(oldvect);
}