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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [HCS12_CodeWarrior_small/] [CODE/] [TickTimer.C] - Rev 600
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/** ###################################################################
** THIS BEAN MODULE IS GENERATED BY THE TOOL. DO NOT MODIFY IT.
** Filename : TickTimer.C
** Project : RTOSDemo
** Processor : MC9S12C32CFU
** Beantype : TimerInt
** Version : Bean 02.063, Driver 01.05, CPU db: 2.87.276
** Compiler : Metrowerks HC12 C Compiler
** Date/Time : 18/06/2005, 17:53
** 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 : TIM (16-bit)
** Compare name : TC0
** Counter shared : No
**
** High-speed CPU mode
** Prescaler : divide-by-4
** Clock : 5999000 Hz
** Initial period/frequency
** Xtal ticks : 16000
** microseconds : 1000
** milliseconds : 1
** seconds (real) : 0.0010000
** Hz : 1000
** kHz : 1
**
** Runtime setting : period/frequency interval (continual setting)
** ticks : 16000 to 160000 ticks
** microseconds : 1000 to 10000 microseconds
** milliseconds : 1 to 10 milliseconds
** seconds (real) : 0.0010000 to 0.0100000 seconds
** Hz : 100 to 1000 Hz
**
** Initialization:
** Timer : Disabled
** Events : Enabled
**
** Timer registers
** Counter : TCNT [68]
** Mode : TIOS [64]
** Run : TSCR1 [70]
** Prescaler : TSCR2 [77]
**
** Compare registers
** Compare : TC0 [80]
**
** Flip-flop registers
** Mode : TCTL2 [73]
** Contents :
** Enable - byte TickTimer_Enable(void);
** SetFreqHz - byte TickTimer_SetFreqHz(word Freq);
**
** (c) Copyright UNIS, spol. s r.o. 1997-2002
** UNIS, spol. s r.o.
** Jundrovska 33
** 624 00 Brno
** Czech Republic
** http : www.processorexpert.com
** mail : info@processorexpert.com
** ###################################################################*/
/* MODULE TickTimer. */
#include "Events.h"
#include "TickTimer.h"
/* Definition of DATA and CODE segments for this bean. User can specify where
these segments will be located on "Build options" tab of the selected CPU bean. */
#pragma DATA_SEG TickTimer_DATA /* Data section for this module. */
#pragma CODE_SEG TickTimer_CODE /* Code section for this module. */
static bool EnUser; /* Enable/Disable device by user */
static word CmpHighVal; /* Compare register value for high speed CPU mode */
/*
** ===================================================================
** Method : SetCV (bean TimerInt)
**
** Description :
** This method is internal. It is used by Processor Expert
** only.
** ===================================================================
*/
static void SetCV(word Val)
{
if (Val == 0) /* If the given value is zero */
Val = 65535; /* then change it to the maximal one */
TC0 = Val; /* Store given value to the compare register */
TC7 = Val; /* Store given value to the modulo register */
}
/*
** ===================================================================
** Method : SetPV (bean TimerInt)
**
** Description :
** This method is internal. It is used by Processor Expert
** only.
** ===================================================================
*/
static void SetPV(byte Val)
{
TSCR2_PR = Val; /* Store given value to the prescaler */
}
/*
** ===================================================================
** Method : HWEnDi (bean TimerInt)
**
** Description :
** This method is internal. It is used by Processor Expert
** only.
** ===================================================================
*/
static void HWEnDi(void)
{
if (EnUser) { /* Enable device? */
TFLG1 = 1; /* Reset interrupt request flag */
TIE_C0I = 1; /* Enable interrupt */
}
else { /* Disable device? */
TIE_C0I = 0; /* Disable interrupt */
}
}
/*
** ===================================================================
** Method : TickTimer_Enable (bean TimerInt)
**
** Description :
** Enable the bean - it starts the timer. Events may be
** generated ("DisableEvent"/"EnableEvent").
** Parameters : None
** Returns :
** --- - Error code, possible codes:
** ERR_OK - OK
** ERR_SPEED - This device does not work in
** the active speed mode
** ===================================================================
*/
byte TickTimer_Enable(void)
{
if (!EnUser) { /* Is the device disabled by user? */
EnUser = TRUE; /* If yes then set the flag "device enabled" */
HWEnDi(); /* Enable the device */
}
return ERR_OK; /* OK */
}
/*
** ===================================================================
** Method : TickTimer_SetFreqHz (bean TimerInt)
**
** Description :
** This method sets the new frequency of the generated
** events. The frequency is expressed in Hz as a 16-bit
** unsigned integer number.
** This method is available only if runtime setting type
** 'from interval' is selected in the Timing dialog box in
** Runtime setting area.
** Parameters :
** NAME - DESCRIPTION
** Freq - Frequency to set [in Hz]
** (100 to 1000 Hz)
** Returns :
** --- - Error code, possible codes:
** ERR_OK - OK
** ERR_SPEED - This device does not work in
** the active speed mode
** ERR_MATH - Overflow during evaluation
** ERR_RANGE - Parameter out of range
** ===================================================================
*/
byte TickTimer_SetFreqHz(word Freq)
{
dlong rtval; /* Result of two 32-bit numbers division */
word rtword; /* Result of 64-bit number division */
if ((Freq > 1000) || (Freq < 100)) /* Is the given value out of range? */
return ERR_RANGE; /* If yes then error */
rtval[1] = 1535744000 / (dword)Freq; /* Divide high speed CPU mode coefficient by the given value */
rtval[0] = 0; /* Convert result to the type dlong */
if (PE_Timer_LngHi1(rtval[0],rtval[1],&rtword)) /* Is the result greater or equal than 65536 ? */
rtword = 65535; /* If yes then use maximal possible value */
CmpHighVal = rtword; /* Store result (compare register value for high speed CPU mode) to the variable CmpHighVal */
SetCV(CmpHighVal); /* Store appropriate value to the compare register according to the selected high speed CPU mode */
return ERR_OK; /* OK */
}
/*
** ===================================================================
** Method : TickTimer_Init (bean TimerInt)
**
** Description :
** This method is internal. It is used by Processor Expert
** only.
** ===================================================================
*/
void TickTimer_Init(void)
{
CmpHighVal = 5999; /* Compare register value for high speed CPU mode */
EnUser = FALSE; /* Disable device */
SetCV(CmpHighVal); /* Store appropriate value to the compare register according to the selected high speed CPU mode */
SetPV(2); /* Set prescaler register according to the selected high speed CPU mode */
HWEnDi(); /* Enable/disable device according to status flags */
}
/*
** ===================================================================
** Method : TickTimer_Interrupt (bean TimerInt)
**
** Description :
** This method is internal. It is used by Processor Expert
** only.
** ===================================================================
*/
#pragma CODE_SEG __NEAR_SEG NON_BANKED /* Interrupt section for this module. Placement will be in NON_BANKED area. */
__interrupt void TickTimer_Interrupt(void)
{
TFLG1 = 1; /* Reset interrupt request flag */
vTaskTickInterrupt(); /* Invoke user event */
}
#pragma CODE_SEG TickTimer_CODE /* Code section for this module. */
/* END TickTimer. */
/*
** ###################################################################
**
** This file was created by UNIS Processor Expert 03.33 for
** the Motorola HCS12 series of microcontrollers.
**
** ###################################################################
*/
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