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"

#include "oc_gpio.h"

extern void dbg_sh(void);

static cyg_interrupt int1;

static cyg_handle_t int1_handle;

//

// Interrupt service routine for interrupt 1.

//

cyg_uint32 interrupt_1_isr(

            cyg_vector_t vector,

            cyg_addrword_t data)

{

  // Block this interrupt from occurring until

  // the DSR completes.

  cyg_interrupt_mask( vector );

  // disable and clear gpio b intr

  OC_GPIO_B_RGPIO_INTE &= 0x7fffffff;

  OC_GPIO_B_RGPIO_INTS &= 0x7fffffff;

  // Tell the processor that we have received

  // the interrupt.

  cyg_interrupt_acknowledge( vector );

  // Tell the kernel that chained interrupt processing

  // is done and the DSR needs to be executed next.

  return( CYG_ISR_HANDLED | CYG_ISR_CALL_DSR );

}

// 

// Deferred service routine for interrupt 1.

// 

void interrupt_1_dsr(

       cyg_vector_t vector,

       cyg_ucount32 count,

       cyg_addrword_t data)

{

  hex_led_command( DE1_HEX_LED_INCREMENT, 0);

  OC_GPIO_B_RGPIO_INTE |=  0x80000000;

  // Allow this interrupt to occur again.

  cyg_interrupt_unmask( vector );

}

/* 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;

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

void cyg_user_start(void)

{

  // enable cs3

  PINSEL2 = 0x0f814924;

  // configure BCFG3

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

  // reset FPGA

  *((unsigned int *)0x83300000) = 0x00000001;

  cyg_thread_delay(10);

  // configure gpio

  fled_init(0x00000003);

  hex_led_init(0x00);

  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);

  cyg_vector_t int1_vector = CYGNUM_HAL_INTERRUPT_EINT3;

//   cyg_priority_t int1_priority = CYGNUM_HAL_PRI_HIGH;

  cyg_priority_t int1_priority = 0;

  //

  // Create interrupt 1.

  //

  cyg_interrupt_create(

     int1_vector,

     int1_priority,

     0,

     &interrupt_1_isr,

     &interrupt_1_dsr,

     &int1_handle,

     &int1);

  // Attach the interrupt created to the vector.

  cyg_interrupt_attach( int1_handle );

  // configure gpio b

  OC_GPIO_B_RGPIO_INTS &= 0x7fffffff;

  OC_GPIO_B_RGPIO_INTE =  0x80000000;

  OC_GPIO_B_RGPIO_CTRL =  0x00000001;

  // configure eint3

  *((unsigned int *)0xE002C004) |= 0x20000000;

  // Unmask the interrupt we just configured.

  cyg_interrupt_unmask( int1_vector );

}

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

void dbg_shell(cyg_addrword_t data)

{

  int message = (int) data;

  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 (;;) {

    OC_GPIO_B_RGPIO_OUT ^= 0x00000001;

//     hex_led_command( DE1_HEX_LED_INCREMENT, 0);

    cyg_thread_delay(100);

  }

}