user_func.c

来自「IAR-2148.rar 这是IAR上做的2148所有的例程」· C语言 代码 · 共 132 行

/*************************************************************************
 *
 *    Used with ICCARM and AARM.
 *
 *    (c) Copyright IAR Systems 2003
 *
 *    File name   : main.c
 *    Description : Define main module
 *
 *    History :
 *    1. Data        : Feb 12, 2005
 *       Author      : Stanimir Bonev
 *       Description : Create
 *
 *    $Revision: 1.2 $
**************************************************************************/
#include "user_func.h"

LPC_INT8U ButtCount1,ButtCount2,ButtFlags;
int TickSysFlag;
USB_BUF_DEF UsbBuf;

/*************************************************************************
 * Function Name: ButtonsInit
 * Parameters: none
 * Return: none
 * Description: Init buttons
 *
 *************************************************************************/
void ButtonsInit (void)
{
  /* Init buttons Inputs */
  IO0DIR_bit.P0_15 = IO0DIR_bit.P0_16 = 0;
  /* Init button's variable */
  ButtFlags = ButtCount1 = ButtCount2 = 0;
}

/*************************************************************************
 * Function Name: Buttons
 * Parameters: none
 * Return: none
 * Description: Inplement buttons
 *
 *************************************************************************/
void Buttons (void)
{
  if (!IO0PIN_bit.P0_15)
  {
    if(ButtCount1 > BUTT_DEB)
    {
      if((ButtFlags & BUTT_FLAG_1) == 0)
      {
        ButtFlags |= BUTT_FLAG_1+BUTT_EVENT_1;
      }
    }
    else
    {
      ++ButtCount1;
    }
  }
  else
  {
    if(ButtCount1 == 0)
    {
      if(ButtFlags & BUTT_FLAG_1)
      {
        ButtFlags &= ~(BUTT_FLAG_1+BUTT_EVENT_1);
      }
    }
    else
    {
      --ButtCount1;
    }
  }
  if (!IO0PIN_bit.P0_16)
  {
    if(ButtCount2 > BUTT_DEB)
    {
      if((ButtFlags & BUTT_FLAG_2) == 0)
      {
        ButtFlags |= BUTT_FLAG_2+BUTT_EVENT_2;
      }
    }
    else
    {
      ++ButtCount2;
    }
  }
  else
  {
    if(ButtCount2 == 0)
    {
      if(ButtFlags & BUTT_FLAG_2)
      {
        ButtFlags &= ~(BUTT_FLAG_2+BUTT_EVENT_2);
      }
    }
    else
    {
      --ButtCount2;
    }
  }
}

/*************************************************************************
 * Function Name: GetButtonsEvent
 * Parameters: none
 * Return: LPC_INT8U
 * Description: Return buttons event and clear event flags
 *
 *************************************************************************/
LPC_INT8U GetButtonsEvent (void)
{
LPC_INT8U Events = ButtFlags & (BUTT_EVENT_1|BUTT_EVENT_2);
  return Events;
}

/*************************************************************************
 * Function Name: ClearFlag
 * Parameters: void
 * Return: void
 *
 * Description: clear arg
 *
 *************************************************************************/
void SetSysTickFlag (void* arg)
{
  int* pFlag = (int *)arg;
  *pFlag = 1;
  Buttons();
}