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来自「Freescale 系列单片机常用模块与综合系统设计」· 代码 · 共 141 行

/** ###################################################################
**     THIS COMPONENT MODULE IS GENERATED BY THE TOOL. DO NOT MODIFY IT.
**     Filename  : Timer_10uS.C
**     Project   : line_following_car
**     Processor : MC9S08JM60CLHE
**     Component : TimerInt
**     Version   : Component 02.157, Driver 01.18, CPU db: 3.00.046
**     Compiler  : CodeWarrior HCS08 C Compiler
**     Date/Time : 2010-1-19, 15:22
**     Abstract  :
**         This bean "TimerInt" implements a periodic interrupt.
**         When the bean and its events are enabled, the "OnInterrupt"
**         event is called periodically with the period that you specify.
**         TimerInt supports also changing the period in runtime.
**         The source of periodic interrupt can be timer compare or reload
**         register or timer-overflow interrupt (of free running counter).
**     Settings  :
**         Timer name                  : TPM2 (16-bit)
**         Compare name                : TPM20
**         Counter shared              : No
**
**         High speed mode
**             Prescaler               : divide-by-1
**             Clock                   : 48000000 Hz
**           Initial period/frequency
**             Xtal ticks              : 120
**             microseconds            : 10
**             seconds (real)          : 0.00001
**             Hz                      : 100000
**             kHz                     : 100
**
**         Runtime setting             : none
**
**         Initialization:
**              Timer                  : Enabled
**              Events                 : Enabled
**
**         Timer registers
**              Counter                : TPM2CNT   [$0061]
**              Mode                   : TPM2SC    [$0060]
**              Run                    : TPM2SC    [$0060]
**              Prescaler              : TPM2SC    [$0060]
**
**         Compare registers
**              Compare                : TPM2C0V   [$0066]
**
**         Flip-flop registers
**              Mode                   : TPM2C0SC  [$0065]
**     Contents  :
**         No public methods
**
**     Copyright : 1997 - 2009 Freescale Semiconductor, Inc. All Rights Reserved.
**     
**     http      : www.freescale.com
**     mail      : [e-mail]
** ###################################################################*/

/* MODULE Timer_10uS. */

#include "Events.h"
#include "PE_Error.h"
#include "Timer_10uS.h"
#pragma MESSAGE DISABLE C2705          /* WARNING C2705: Possible loss of data */
#pragma MESSAGE DISABLE C5919          /* WARNING C5919: Conversion of floating to unsigned integral */
#pragma MESSAGE DISABLE C5703          /* WARNING C5703: Parameter X declared in function F but not referenced */
#pragma MESSAGE DISABLE C4002          /* Disable warning C4002 "Result not used" */

/*** Internal macros and method prototypes ***/

/*
** ===================================================================
**     Method      :  SetCV (component TimerInt)
**
**     Description :
**         The method computes and sets compare eventually modulo value 
**         for time measuring.
**         This method is internal. It is used by Processor Expert only.
** ===================================================================
*/
#define Timer_10uS_SetCV(_Val) ( \
  TPM2C0V = (word)(_Val), \
  TPM2MOD = (word)(_Val) )


/*** End of internal method prototypes ***/

/*
** ===================================================================
**     Method      :  Timer_10uS_Init (component TimerInt)
**
**     Description :
**         Initializes the associated peripheral(s) and the beans 
**         internal variables. The method is called automatically as a 
**         part of the application initialization code.
**         This method is internal. It is used by Processor Expert only.
** ===================================================================
*/
void Timer_10uS_Init(void)
{
  /* TPM2SC: TOF=0,TOIE=0,CPWMS=0,CLKSB=0,CLKSA=0,PS2=0,PS1=0,PS0=0 */
  setReg8(TPM2SC, 0x00);               /* Stop HW; disable overflow interrupt and set prescaler to 0 */ 
  /* TPM2C0SC: CH0F=0,CH0IE=1,MS0B=0,MS0A=1,ELS0B=0,ELS0A=0,??=0,??=0 */
  setReg8(TPM2C0SC, 0x50);             /* Set output compare mode and enable compare interrupt */ 
  Timer_10uS_SetCV(0x01DFU);           /* Inicialize appropriate value to the compare/modulo/reload register */
  /* TPM2CNTH: BIT15=0,BIT14=0,BIT13=0,BIT12=0,BIT11=0,BIT10=0,BIT9=0,BIT8=0 */
  setReg8(TPM2CNTH, 0x00);             /* Reset HW Counter */ 
  /* TPM2SC: TOF=0,TOIE=0,CPWMS=0,CLKSB=0,CLKSA=1,PS2=0,PS1=0,PS0=0 */
  setReg8(TPM2SC, 0x08);               /* Set prescaler and run counter */ 
}


/*
** ===================================================================
**     Method      :  Timer_10uS_Interrupt (component TimerInt)
**
**     Description :
**         The method services the interrupt of the selected peripheral(s)
**         and eventually invokes the beans event(s).
**         This method is internal. It is used by Processor Expert only.
** ===================================================================
*/
ISR(Timer_10uS_Interrupt)
{
  /* TPM2C0SC: CH0F=0 */
  clrReg8Bits(TPM2C0SC, 0x80);         /* Reset compare interrupt request flag */ 
  Timer_10uS_OnInterrupt();            /* Invoke user event */
}



/* END Timer_10uS. */

/*
** ###################################################################
**
**     This file was created by Processor Expert 3.07 [04.34]
**     for the Freescale HCS08 series of microcontrollers.
**
** ###################################################################
*/