【OK210试用体验】第四弹手动写 uCOS II 的移植程序

陌路绝途 · 2015-8-8 21:04:20

陌路绝途 ( 楼主 ) 2015-8-8 21:04:20 只看该作者 3097 | 1 倒序浏览

#include "all.h"

OS_STK  InitTaskStk[1024];
OS_STK  MyTaskStk1[1024];
OS_STK  MyTaskStk2[1024];

static void MyTask1(void *parg)
{

      Uart_Printf("MyTaskStartn");

      while (1) {
            OSTimeDly(100);
            Uart_Printf("An");
      }
}

static void MyTask2(void *parg)
{

      while (1) {
            Uart_Printf("Bn");
            OSTimeDly(68);
      }

}

extern void print_cpuinfo(void);

void InitTask(void *parg)
{
            parg = parg ;
            Uart_Printf("Initn");
            //初始化代码段
            Uart_0_Init();
            timer_0_init();
            print_cpuinfo();                      //打印CPU信息

            //任务创建
            OSTaskCreate(MyTask1,(void *)1, (void *)&MyTaskStk1[1023], 4);
            OSTaskCreate(MyTask2,(void *)2, (void *)&MyTaskStk2[1023], 8);
            OSTaskDel(OSPrioCur);

}

void InitTaskStart(void)
{
      OSTaskCreate(InitTask, (void *)0, (void*)&InitTaskStk[1023], 1);  //创建优先级为0的任务

}

#include "all.h"
#include
#include
#include
#include
#include

void Uart_Printf(char *fmt,...)
{
      va_list ap;
      char string[1024];

      va_start(ap,fmt);
      vsprintf(string,fmt,ap);
      va_end(ap);

      Uart_0_SendString(string); //default send from uart0

}

void Uart_0_Init(void)
{
      /*init GPIO*/
      GPHCON &= ~(0xf);
      GPHCON |= 0xa;

      /*uart registers*/
      ULCON0_REG = 0x3;
      UFCON0_REG = (0xa << 4) | 0x7;
      UMCON0_REG = 0;
      UBRDIV0_REG = 35;
      UDIVSLOT0_REG = 0x0888;
      UCON0_REG = 0x5|(0x1 << 7)|(0x2 << 10);
}

void Uart_0_SendByte(char b)
{
      while (!(UTRSTAT0_REG & 0x2));
      UTXH0_REG = b;
}

void Uart_0_SendString(char *s)
{
      char *tmp = s;
      while (*tmp) {
            if ('n' == (char)*tmp){
                     Uart_0_SendByte('r');
            }
            Uart_0_SendByte(*tmp);
            ++tmp;
      }
}

char Uart_0_ReceiveByte(void)
{
      return URXH0_REG;
}

//Uart的中断接受程序没有写，用户自己添加

#include "all.h"

extern void inerrupt_vector_init(void);
extern void exception_vector(void);
extern void MMU_EnableDCache(void);
extern void MMU_EnableICache(void);
extern void MMU_DisableMMU(void);
extern void read_cpsr(void);
extern void InitTaskStart(void);
extern void make_mmu_table (void);

void Main()
{
      Uart_Printf("    ccStartn");

      inerrupt_vector_init();
      s3c2416_memcpy((void *)0xffff0000, (void*)(exception_vector), 128);

      MMU_EnableDCache();
      MMU_EnableICache();

      Uart_Printf("Startn");


      OSInit();
      InitTaskStart();

      OSStart();

}

#include

extern INT32U get_PCLK(void);

static void timer_0_ISRService(void)
{
      SRCPND_REG |= (0x01<<10);                      /* write 1 toclear */
      INTPND_REG |= (0x01<<10);                      /* write 1 toclear */
      OSTimeTick();
}

static void timer_0_ISRInit(void)
{
      INTMOD_REG = 0x00000000;
      PRIORITY_MODE_REG = 0x00000000;
      INTMSK_REG &= ~(0x01<<10);             /* set timer0 interrupt available */
}

/*
*Tclk = PCLK/{precaler+1}/{divider value}
*precaler = PCLK/{Tclk*{divider value}} - 1
*/
void timer_0_init(void)
{
      TCON_REG  &= ~0x0F;             /* default timer0*/
      TCFG0_REG &= ~0xFF;
      TCFG1_REG &= ~0x0F;

      timer_0_ISRInit();

      register_irq(10, timer_0_ISRService);

      TCFG0_REG |= 15;                      /* prescaler: 15 */
      TCFG1_REG |= 0x01;             /* divider value :1/4*/
      TCNTB0_REG = get_PCLK()/(15*4*OS_TICKS_PER_SEC) - 1;

      TCON_REG |= 0x02;                      /* update TCNTB0&TCMPB0 */
      TCON_REG &= ~0x02;                      /* must clear 'manualupdate', note page 297*/
      TCON_REG |= 0x09;                      /* 1001-- auto reload, starttimer0 */
}