📄 pwm6.c
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/** ###################################################################
** THIS BEAN MODULE IS GENERATED BY THE TOOL. DO NOT MODIFY IT.
** Filename : PWM6.C
** Project : ESV1_0_DJ64
** Processor : MC9S12DJ64BCFU
** Beantype : PWM
** Version : Bean 02.065, Driver 01.04, CPU db: 2.87.238
** Compiler : Metrowerks HC12 C Compiler
** Date/Time : 2006-6-10, 10:56
** Abstract :
** This bean implements a pulse-width modulation generator
** that generates signal with variable duty and fixed cycle.
** Settings :
** Used output pin :
** ----------------------------------------------------
** Number (on package) | Name
** ----------------------------------------------------
** 3 | PP1_PWM1_KWP1
** ----------------------------------------------------
**
** Timer name : PWM01 [16-bit]
** Counter : PWMCNT01 [172]
** Mode register : PWMCTL [165]
** Run register : PWME [160]
** Prescaler : PWMPRCLK [163]
** Compare 1 register : PWMPER01 [180]
** Compare 2 register : PWMDTY01 [188]
** Flip-flop 1 register : PWMPOL [161]
**
** User handling procedure : not specified
**
** Output pin
**
** Port name : P
** Bit number (in port) : 1
** Bit mask of the port : 2
** Port data register : PTP [600]
** Port control register : DDRP [602]
**
** Runtime setting period : none
** Runtime setting ratio : calculated
** Initialization:
** Aligned : Left
** Output level : low
** Timer : Enabled
** Event : Enabled
** High-speed CPU mode
** Prescaler : divide-by-1
** Clock : 4000000 Hz
** Initial value of period pulse width (ratio 8%)
** Xtal ticks : 16000 1280
** microseconds : 1000 80
** milliseconds : 1 0
** seconds (real) : 0.0010000 0.0000800
**
** Contents :
** Enable - byte PWM6_Enable(void);
** SetRatio16 - byte PWM6_SetRatio16(word Ratio);
** SetDutyUS - byte PWM6_SetDutyUS(word Time);
** SetDutyMS - byte PWM6_SetDutyMS(word Time);
**
** (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 PWM6. */
#include "PWM6.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 PWM6_DATA /* Data section for this module. */
#pragma CODE_SEG PWM6_CODE /* Code section for this module. */
static word RatioStore; /* Ratio of L-level to H-level */
/*
** ===================================================================
** Method : HWEnDi (bean PWM)
**
** Description :
** This method is internal. It is used by Processor Expert
** only.
** ===================================================================
*/
static void HWEnDi(void)
{
PWME_PWME1 = 1; /* Run counter */
}
/*
** ===================================================================
** Method : SetRatio (bean PWM)
**
** Description :
** This method is internal. It is used by Processor Expert
** only.
** ===================================================================
*/
static void SetRatio(void)
{
PWMDTY01 = (PWMPER01 * (dword)RatioStore) >> 16; /* Calculate new value according to the given ratio */
}
/*
** ===================================================================
** Method : PWM6_Enable (bean PWM)
**
** Description :
** This method enables the signal generation
** Parameters : None
** Returns :
** --- - Error code
** ===================================================================
*/
byte PWM6_Enable(void)
{
HWEnDi(); /* Enable the device */
return ERR_OK; /* OK */
}
/*
** ===================================================================
** Method : PWM6_SetRatio16 (bean PWM)
**
** Description :
** This method sets a new duty-cycle ratio.
** Parameters :
** NAME - DESCRIPTION
** Ratio - Ratio is expressed as an 16-bit unsigned integer
** number. 0 - 65535 value is proportional
** to ratio 0 - 100%
** Note: Calculated duty-cycle ratio depends on the timer
** possibilities and on the selected period.
** Returns :
** --- - Error code
** ===================================================================
*/
byte PWM6_SetRatio16(word Ratio)
{
RatioStore = Ratio; /* Store new value of the ratio */
SetRatio(); /* Calculate and set up new appropriate values of the duty and period registers */
return ERR_OK; /* OK */
}
/*
** ===================================================================
** Method : PWM6_SetDutyUS (bean PWM)
**
** Description :
** This method sets the new duty value of the output signal. The
** duty is expressed in microseconds as a 16-bit unsigned integer
** number.
** Parameters :
** NAME - DESCRIPTION
** Time - Duty to set [in microseconds]
** (0 to 1000 us in high speed CPU mode)
** Returns :
** --- - Error code
** ===================================================================
*/
byte PWM6_SetDutyUS(word Time)
{
dlong rtval; /* Result of two 32-bit numbers multiplication */
if (Time >= 1000) /* Is the given value out of range? */
return ERR_RANGE; /* If yes then error */
PE_Timer_LngMul((dword)Time,1099511628,&rtval); /* Multiply given value and high speed CPU mode coefficient */
if (PE_Timer_LngHi3(rtval[0],rtval[1],&RatioStore)) /* Is the result greater or equal than 65536 ? */
RatioStore = 65535; /* If yes then use maximal possible value */
SetRatio(); /* Calculate and set up new appropriate values of the duty and period registers */
return ERR_OK; /* OK */
}
/*
** ===================================================================
** Method : PWM6_SetDutyMS (bean PWM)
**
** Description :
** This method sets the new duty value of the output signal. The
** duty is expressed in milliseconds as a 16-bit unsigned integer
** number.
** Parameters :
** NAME - DESCRIPTION
** Time - Duty to set [in milliseconds]
** (0 to 1 ms in high speed CPU mode)
** Returns :
** --- - Error code
** ===================================================================
*/
byte PWM6_SetDutyMS(word Time)
{
dlong rtval; /* Result of two 32-bit numbers multiplication */
if (Time >= 1) /* Is the given value out of range? */
return ERR_RANGE; /* If yes then error */
PE_Timer_LngMul((dword)Time,16777216,&rtval); /* Multiply given value and high speed CPU mode coefficient */
if (PE_Timer_LngHi1(rtval[0],rtval[1],&RatioStore)) /* Is the result greater or equal than 65536 ? */
RatioStore = 65535; /* If yes then use maximal possible value */
SetRatio(); /* Calculate and set up new appropriate values of the duty and period registers */
return ERR_OK; /* OK */
}
/*
** ===================================================================
** Method : PWM6_Init (bean PWM)
**
** Description :
** This method is internal. It is used by Processor Expert
** only.
** ===================================================================
*/
void PWM6_Init(void)
{
PWMCNT01 = 0;
RatioStore = 13107; /* Store initial value of the ratio */
PWMDTY01 = 800; /* Store initial value to the duty-compare register */
PWMPER01 = 4000; /* and to the period register */
/* PWMPRCLK: ??=0,PCKB2=0,PCKB1=0,PCKB0=0,??=0,PCKA2=0,PCKA1=0,PCKA0=0 */
PWMPRCLK = 0; /* Set prescaler register */
/* PWMSCLA: BIT7=0,BIT6=0,BIT5=0,BIT4=0,BIT3=0,BIT2=0,BIT1=0,BIT0=1 */
PWMSCLA = 1; /* Set scale register */
PWMCLK_PCLK1 = 1; /* Select clock source */
HWEnDi(); /* Enable/disable device according to status flags */
}
/* END PWM6. */
/*
** ###################################################################
**
** This file was created by UNIS Processor Expert 03.33 for
** the Motorola HCS12 series of microcontrollers.
**
** ###################################################################
*/
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