Subversion Repositories de1_olpcl2294_system

//

//

//

#include <stdio.h>

#include <math.h>

#include <stdlib.h>

#include <cyg/kernel/kapi.h>

#include "LPC22xx.h"

#include "lib_dbg_sh.h"

extern void dbg_sh(void);

/* now declare (and allocate space for) some kernel objects,

   like the two threads we will use */

cyg_thread thread_s[2];         /* space for two thread objects */

char stack[2][4096];            /* space for two 4K stacks */

/* now the handles for the threads */

cyg_handle_t dbg_shell_thread, simple_threadB;

/* and now variables for the procedure which is the thread */

cyg_thread_entry_t dbg_shell;

cyg_thread_entry_t simple_program;

/* and now a mutex to protect calls to the C library */

cyg_mutex_t cliblock;

/* we install our own startup routine which sets up threads */

void cyg_user_start(void)

{

//   printf("Entering twothreads' cyg_user_start() function\n");

  // enable cs3

  PINSEL2 = 0x0f814924;

  // configure BCFG3

  *((unsigned int *)0xFFE0000C) = 0x20007de7;

  // configure gpio

  *((unsigned int *)0x83200008) = 0x0003ffff;

  *((unsigned int *)0x83200008) = 0x00000003;

  *((unsigned int *)0x83200008) ^= 0x00000002;

  cyg_mutex_init(&cliblock);

  cyg_thread_create(4, dbg_shell, (cyg_addrword_t) 0,

                    "DBG Shell", (void *) stack[0], 4096,

                    &dbg_shell_thread, &thread_s[0]);

  cyg_thread_create(4, simple_program, (cyg_addrword_t) 1,

                    "Thread B", (void *) stack[1], 4096,

                    &simple_threadB, &thread_s[1]);

  cyg_thread_resume(dbg_shell_thread);

  cyg_thread_resume(simple_threadB);

}

/* this is a simple program which runs in a thread */

void dbg_shell(cyg_addrword_t data)

{

  int message = (int) data;

  int delay;

  printf("Beginning execution; thread data is %d\n", message);

  dbg_sh();

}

/* this is a simple program which runs in a thread */

void simple_program(cyg_addrword_t data)

{

  for (;;) {

    *((unsigned int *)0x83200008) ^= 0x00000001;

    cyg_thread_delay(200);

  }

}