589 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			589 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /**********************************************************************
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| * $Id$      lpc17xx_pwm.c               2011-03-31
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| *//**
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| * @file     lpc17xx_pwm.c
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| * @brief    Contains all functions support for PWM firmware library on LPC17xx
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| * @version  2.1
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| * @date     31. Mar. 2011
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| * @author   NXP MCU SW Application Team
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| *
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| * Copyright(C) 2011, NXP Semiconductor
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| * All rights reserved.
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| *
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| ***********************************************************************
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| * Software that is described herein is for illustrative purposes only
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| * which provides customers with programming information regarding the
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| * products. This software is supplied "AS IS" without any warranties.
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| * NXP Semiconductors assumes no responsibility or liability for the
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| * use of the software, conveys no license or title under any patent,
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| * copyright, or mask work right to the product. NXP Semiconductors
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| * reserves the right to make changes in the software without
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| * notification. NXP Semiconductors also make no representation or
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| * warranty that such application will be suitable for the specified
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| * use without further testing or modification.
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| * Permission to use, copy, modify, and distribute this software and its
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| * documentation is hereby granted, under NXP Semiconductors'
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| * relevant copyright in the software, without fee, provided that it
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| * is used in conjunction with NXP Semiconductors microcontrollers.  This
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| * copyright, permission, and disclaimer notice must appear in all copies of
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| * this code.
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| **********************************************************************/
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| 
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| /* Peripheral group ----------------------------------------------------------- */
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| /** @addtogroup PWM
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|  * @{
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|  */
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| 
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| /* Includes ------------------------------------------------------------------- */
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| #include "lpc17xx_pwm.h"
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| #include "lpc17xx_clkpwr.h"
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| 
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| /* If this source file built with example, the LPC17xx FW library configuration
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|  * file in each example directory ("lpc17xx_libcfg.h") must be included,
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|  * otherwise the default FW library configuration file must be included instead
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|  */
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| #ifdef __BUILD_WITH_EXAMPLE__
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| #include "lpc17xx_libcfg.h"
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| #else
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| #include "lpc17xx_libcfg_default.h"
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| #endif /* __BUILD_WITH_EXAMPLE__ */
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| 
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| 
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| #ifdef _PWM
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| 
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| 
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| /* Public Functions ----------------------------------------------------------- */
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| /** @addtogroup PWM_Public_Functions
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|  * @{
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|  */
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Check whether specified interrupt flag in PWM is set or not
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|  * @param[in]   PWMx: PWM peripheral, should be LPC_PWM1
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|  * @param[in]   IntFlag: PWM interrupt flag, should be:
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|  *              - PWM_INTSTAT_MR0: Interrupt flag for PWM match channel 0
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|  *              - PWM_INTSTAT_MR1: Interrupt flag for PWM match channel 1
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|  *              - PWM_INTSTAT_MR2: Interrupt flag for PWM match channel 2
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|  *              - PWM_INTSTAT_MR3: Interrupt flag for PWM match channel 3
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|  *              - PWM_INTSTAT_MR4: Interrupt flag for PWM match channel 4
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|  *              - PWM_INTSTAT_MR5: Interrupt flag for PWM match channel 5
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|  *              - PWM_INTSTAT_MR6: Interrupt flag for PWM match channel 6
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|  *              - PWM_INTSTAT_CAP0: Interrupt flag for capture input 0
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|  *              - PWM_INTSTAT_CAP1: Interrupt flag for capture input 1
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|  * @return      New State of PWM interrupt flag (SET or RESET)
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|  **********************************************************************/
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| IntStatus PWM_GetIntStatus(LPC_PWM_TypeDef *PWMx, uint32_t IntFlag)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_PWM_INTSTAT(IntFlag));
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| 
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|     return ((PWMx->IR & IntFlag) ? SET : RESET);
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| }
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| 
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Clear specified PWM Interrupt pending
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|  * @param[in]   PWMx: PWM peripheral, should be LPC_PWM1
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|  * @param[in]   IntFlag: PWM interrupt flag, should be:
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|  *              - PWM_INTSTAT_MR0: Interrupt flag for PWM match channel 0
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|  *              - PWM_INTSTAT_MR1: Interrupt flag for PWM match channel 1
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|  *              - PWM_INTSTAT_MR2: Interrupt flag for PWM match channel 2
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|  *              - PWM_INTSTAT_MR3: Interrupt flag for PWM match channel 3
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|  *              - PWM_INTSTAT_MR4: Interrupt flag for PWM match channel 4
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|  *              - PWM_INTSTAT_MR5: Interrupt flag for PWM match channel 5
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|  *              - PWM_INTSTAT_MR6: Interrupt flag for PWM match channel 6
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|  *              - PWM_INTSTAT_CAP0: Interrupt flag for capture input 0
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|  *              - PWM_INTSTAT_CAP1: Interrupt flag for capture input 1
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|  * @return      None
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|  **********************************************************************/
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| void PWM_ClearIntPending(LPC_PWM_TypeDef *PWMx, uint32_t IntFlag)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_PWM_INTSTAT(IntFlag));
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|     PWMx->IR = IntFlag;
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| }
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| 
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| 
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| 
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| /*****************************************************************************//**
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| * @brief        Fills each PWM_InitStruct member with its default value:
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| *               - If PWMCounterMode = PWM_MODE_TIMER:
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| *                   + PrescaleOption = PWM_TIMER_PRESCALE_USVAL
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| *                   + PrescaleValue = 1
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| *               - If PWMCounterMode = PWM_MODE_COUNTER:
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| *                   + CountInputSelect = PWM_COUNTER_PCAP1_0
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| *                   + CounterOption = PWM_COUNTER_RISING
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| * @param[in]    PWMTimerCounterMode Timer or Counter mode, should be:
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| *               - PWM_MODE_TIMER: Counter of PWM peripheral is in Timer mode
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| *               - PWM_MODE_COUNTER: Counter of PWM peripheral is in Counter mode
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| * @param[in]    PWM_InitStruct Pointer to structure (PWM_TIMERCFG_Type or
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| *                PWM_COUNTERCFG_Type) which will be initialized.
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| * @return       None
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| * Note: PWM_InitStruct pointer will be assigned to corresponding structure
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| *       (PWM_TIMERCFG_Type or PWM_COUNTERCFG_Type) due to PWMTimerCounterMode.
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| *******************************************************************************/
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| void PWM_ConfigStructInit(uint8_t PWMTimerCounterMode, void *PWM_InitStruct)
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| {
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|     PWM_TIMERCFG_Type *pTimeCfg;
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|     PWM_COUNTERCFG_Type *pCounterCfg;
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|     CHECK_PARAM(PARAM_PWM_TC_MODE(PWMTimerCounterMode));
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| 
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|     pTimeCfg = (PWM_TIMERCFG_Type *) PWM_InitStruct;
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|     pCounterCfg = (PWM_COUNTERCFG_Type *) PWM_InitStruct;
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| 
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|     if (PWMTimerCounterMode == PWM_MODE_TIMER )
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|     {
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|         pTimeCfg->PrescaleOption = PWM_TIMER_PRESCALE_USVAL;
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|         pTimeCfg->PrescaleValue = 1;
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|     }
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|     else if (PWMTimerCounterMode == PWM_MODE_COUNTER)
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|     {
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|         pCounterCfg->CountInputSelect = PWM_COUNTER_PCAP1_0;
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|         pCounterCfg->CounterOption = PWM_COUNTER_RISING;
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|     }
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| }
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Initializes the PWMx peripheral corresponding to the specified
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|  *               parameters in the PWM_ConfigStruct.
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|  * @param[in]   PWMx PWM peripheral, should be LPC_PWM1
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|  * @param[in]   PWMTimerCounterMode Timer or Counter mode, should be:
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|  *              - PWM_MODE_TIMER: Counter of PWM peripheral is in Timer mode
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|  *              - PWM_MODE_COUNTER: Counter of PWM peripheral is in Counter mode
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|  * @param[in]   PWM_ConfigStruct Pointer to structure (PWM_TIMERCFG_Type or
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|  *               PWM_COUNTERCFG_Type) which will be initialized.
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|  * @return      None
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|  * Note: PWM_ConfigStruct pointer will be assigned to corresponding structure
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|  *      (PWM_TIMERCFG_Type or PWM_COUNTERCFG_Type) due to PWMTimerCounterMode.
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|  **********************************************************************/
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| void PWM_Init(LPC_PWM_TypeDef *PWMx, uint32_t PWMTimerCounterMode, void *PWM_ConfigStruct)
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| {
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|     PWM_TIMERCFG_Type *pTimeCfg;
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|     PWM_COUNTERCFG_Type *pCounterCfg;
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|     uint64_t clkdlycnt;
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| 
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_PWM_TC_MODE(PWMTimerCounterMode));
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| 
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|     pTimeCfg = (PWM_TIMERCFG_Type *)PWM_ConfigStruct;
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|     pCounterCfg = (PWM_COUNTERCFG_Type *)PWM_ConfigStruct;
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| 
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| 
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|     CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCPWM1, ENABLE);
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|     CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_PWM1, CLKPWR_PCLKSEL_CCLK_DIV_4);
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|     // Get peripheral clock of PWM1
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|     clkdlycnt = (uint64_t) CLKPWR_GetPCLK (CLKPWR_PCLKSEL_PWM1);
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| 
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| 
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|     // Clear all interrupts pending
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|     PWMx->IR = 0xFF & PWM_IR_BITMASK;
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|     PWMx->TCR = 0x00;
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|     PWMx->CTCR = 0x00;
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|     PWMx->MCR = 0x00;
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|     PWMx->CCR = 0x00;
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|     PWMx->PCR = 0x00;
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|     PWMx->LER = 0x00;
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| 
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|     if (PWMTimerCounterMode == PWM_MODE_TIMER)
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|     {
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|         CHECK_PARAM(PARAM_PWM_TIMER_PRESCALE(pTimeCfg->PrescaleOption));
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| 
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|         /* Absolute prescale value */
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|         if (pTimeCfg->PrescaleOption == PWM_TIMER_PRESCALE_TICKVAL)
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|         {
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|             PWMx->PR   = pTimeCfg->PrescaleValue - 1;
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|         }
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|         /* uSecond prescale value */
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|         else
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|         {
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|             clkdlycnt = (clkdlycnt * pTimeCfg->PrescaleValue) / 1000000;
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|             PWMx->PR = ((uint32_t) clkdlycnt) - 1;
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|         }
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| 
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|     }
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|     else if (PWMTimerCounterMode == PWM_MODE_COUNTER)
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|     {
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|         CHECK_PARAM(PARAM_PWM_COUNTER_INPUTSEL(pCounterCfg->CountInputSelect));
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|         CHECK_PARAM(PARAM_PWM_COUNTER_EDGE(pCounterCfg->CounterOption));
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| 
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|         PWMx->CTCR |= (PWM_CTCR_MODE((uint32_t)pCounterCfg->CounterOption)) \
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|                         | (PWM_CTCR_SELECT_INPUT((uint32_t)pCounterCfg->CountInputSelect));
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|     }
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| }
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| 
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| /*********************************************************************//**
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|  * @brief       De-initializes the PWM peripheral registers to their
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| *                  default reset values.
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|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
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|  * @return      None
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|  **********************************************************************/
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| void PWM_DeInit (LPC_PWM_TypeDef *PWMx)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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| 
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|     // Disable PWM control (timer, counter and PWM)
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|     PWMx->TCR = 0x00;
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|     CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCPWM1, DISABLE);
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| 
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| }
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Enable/Disable PWM peripheral
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|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
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|  * @param[in]   NewState    New State of this function, should be:
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|  *                          - ENABLE: Enable PWM peripheral
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|  *                          - DISABLE: Disable PWM peripheral
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|  * @return      None
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|  **********************************************************************/
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| void PWM_Cmd(LPC_PWM_TypeDef *PWMx, FunctionalState NewState)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState));
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| 
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|     if (NewState == ENABLE)
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|     {
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|         PWMx->TCR   |=  PWM_TCR_PWM_ENABLE;
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|     }
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|     else
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|     {
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|         PWMx->TCR &= (~PWM_TCR_PWM_ENABLE) & PWM_TCR_BITMASK;
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|     }
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| }
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Enable/Disable Counter in PWM peripheral
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|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
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|  * @param[in]   NewState New State of this function, should be:
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|  *                          - ENABLE: Enable Counter in PWM peripheral
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|  *                          - DISABLE: Disable Counter in PWM peripheral
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|  * @return      None
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|  **********************************************************************/
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| void PWM_CounterCmd(LPC_PWM_TypeDef *PWMx, FunctionalState NewState)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState));
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|     if (NewState == ENABLE)
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|     {
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|         PWMx->TCR   |=  PWM_TCR_COUNTER_ENABLE;
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|     }
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|     else
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|     {
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|         PWMx->TCR &= (~PWM_TCR_COUNTER_ENABLE) & PWM_TCR_BITMASK;
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|     }
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| }
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Reset Counter in PWM peripheral
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|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
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|  * @return      None
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|  **********************************************************************/
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| void PWM_ResetCounter(LPC_PWM_TypeDef *PWMx)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     PWMx->TCR |= PWM_TCR_COUNTER_RESET;
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|     PWMx->TCR &= (~PWM_TCR_COUNTER_RESET) & PWM_TCR_BITMASK;
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| }
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Configures match for PWM peripheral
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|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
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|  * @param[in]   PWM_MatchConfigStruct   Pointer to a PWM_MATCHCFG_Type structure
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| *                    that contains the configuration information for the
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| *                    specified PWM match function.
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|  * @return      None
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|  **********************************************************************/
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| void PWM_ConfigMatch(LPC_PWM_TypeDef *PWMx, PWM_MATCHCFG_Type *PWM_MatchConfigStruct)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_PWM1_MATCH_CHANNEL(PWM_MatchConfigStruct->MatchChannel));
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|     CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_MatchConfigStruct->IntOnMatch));
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|     CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_MatchConfigStruct->ResetOnMatch));
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|     CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_MatchConfigStruct->StopOnMatch));
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| 
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|     //interrupt on MRn
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|     if (PWM_MatchConfigStruct->IntOnMatch == ENABLE)
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|     {
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|         PWMx->MCR |= PWM_MCR_INT_ON_MATCH(PWM_MatchConfigStruct->MatchChannel);
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|     }
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|     else
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|     {
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|         PWMx->MCR &= (~PWM_MCR_INT_ON_MATCH(PWM_MatchConfigStruct->MatchChannel)) \
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|                     & PWM_MCR_BITMASK;
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|     }
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| 
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|     //reset on MRn
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|     if (PWM_MatchConfigStruct->ResetOnMatch == ENABLE)
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|     {
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|         PWMx->MCR |= PWM_MCR_RESET_ON_MATCH(PWM_MatchConfigStruct->MatchChannel);
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|     }
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|     else
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|     {
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|         PWMx->MCR &= (~PWM_MCR_RESET_ON_MATCH(PWM_MatchConfigStruct->MatchChannel)) \
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|                     & PWM_MCR_BITMASK;
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|     }
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| 
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|     //stop on MRn
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|     if (PWM_MatchConfigStruct->StopOnMatch == ENABLE)
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|     {
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|         PWMx->MCR |= PWM_MCR_STOP_ON_MATCH(PWM_MatchConfigStruct->MatchChannel);
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|     }
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|     else
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|     {
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|         PWMx->MCR &= (~PWM_MCR_STOP_ON_MATCH(PWM_MatchConfigStruct->MatchChannel)) \
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|                     & PWM_MCR_BITMASK;
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|     }
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| }
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Configures capture input for PWM peripheral
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|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
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|  * @param[in]   PWM_CaptureConfigStruct Pointer to a PWM_CAPTURECFG_Type structure
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| *                    that contains the configuration information for the
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| *                    specified PWM capture input function.
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|  * @return      None
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|  **********************************************************************/
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| void PWM_ConfigCapture(LPC_PWM_TypeDef *PWMx, PWM_CAPTURECFG_Type *PWM_CaptureConfigStruct)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_PWM1_CAPTURE_CHANNEL(PWM_CaptureConfigStruct->CaptureChannel));
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|     CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_CaptureConfigStruct->FallingEdge));
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|     CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_CaptureConfigStruct->IntOnCaption));
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|     CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_CaptureConfigStruct->RisingEdge));
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| 
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|     if (PWM_CaptureConfigStruct->RisingEdge == ENABLE)
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|     {
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|         PWMx->CCR |= PWM_CCR_CAP_RISING(PWM_CaptureConfigStruct->CaptureChannel);
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|     }
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|     else
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|     {
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|         PWMx->CCR &= (~PWM_CCR_CAP_RISING(PWM_CaptureConfigStruct->CaptureChannel)) \
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|                     & PWM_CCR_BITMASK;
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|     }
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| 
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|     if (PWM_CaptureConfigStruct->FallingEdge == ENABLE)
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|     {
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|         PWMx->CCR |= PWM_CCR_CAP_FALLING(PWM_CaptureConfigStruct->CaptureChannel);
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|     }
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|     else
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|     {
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|         PWMx->CCR &= (~PWM_CCR_CAP_FALLING(PWM_CaptureConfigStruct->CaptureChannel)) \
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|                     & PWM_CCR_BITMASK;
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|     }
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| 
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|     if (PWM_CaptureConfigStruct->IntOnCaption == ENABLE)
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|     {
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|         PWMx->CCR |= PWM_CCR_INT_ON_CAP(PWM_CaptureConfigStruct->CaptureChannel);
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|     }
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|     else
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|     {
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|         PWMx->CCR &= (~PWM_CCR_INT_ON_CAP(PWM_CaptureConfigStruct->CaptureChannel)) \
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|                     & PWM_CCR_BITMASK;
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|     }
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| }
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| 
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| 
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| /*********************************************************************//**
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|  * @brief       Read value of capture register PWM peripheral
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|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
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|  * @param[in]   CaptureChannel: capture channel number, should be in
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|  *              range 0 to 1
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|  * @return      Value of capture register
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|  **********************************************************************/
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| uint32_t PWM_GetCaptureValue(LPC_PWM_TypeDef *PWMx, uint8_t CaptureChannel)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_PWM1_CAPTURE_CHANNEL(CaptureChannel));
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| 
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|     switch (CaptureChannel)
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|     {
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|     case 0:
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|         return PWMx->CR0;
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| 
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|     case 1:
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|         return PWMx->CR1;
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| 
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|     default:
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|         return (0);
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|     }
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| }
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| 
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| 
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| /********************************************************************//**
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|  * @brief       Update value for each PWM channel with update type option
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|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
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|  * @param[in]   MatchChannel Match channel
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|  * @param[in]   MatchValue Match value
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|  * @param[in]   UpdateType Type of Update, should be:
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|  *              - PWM_MATCH_UPDATE_NOW: The update value will be updated for
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|  *                  this channel immediately
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|  *              - PWM_MATCH_UPDATE_NEXT_RST: The update value will be updated for
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|  *                  this channel on next reset by a PWM Match event.
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|  * @return      None
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|  *********************************************************************/
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| void PWM_MatchUpdate(LPC_PWM_TypeDef *PWMx, uint8_t MatchChannel, \
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|                     uint32_t MatchValue, uint8_t UpdateType)
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| {
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|     CHECK_PARAM(PARAM_PWMx(PWMx));
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|     CHECK_PARAM(PARAM_PWM1_MATCH_CHANNEL(MatchChannel));
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|     CHECK_PARAM(PARAM_PWM_MATCH_UPDATE(UpdateType));
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| 
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|     switch (MatchChannel)
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|     {
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|     case 0:
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|         PWMx->MR0 = MatchValue;
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|         break;
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| 
 | |
|     case 1:
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|         PWMx->MR1 = MatchValue;
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|         break;
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| 
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|     case 2:
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|         PWMx->MR2 = MatchValue;
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|         break;
 | |
| 
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|     case 3:
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|         PWMx->MR3 = MatchValue;
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|         break;
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| 
 | |
|     case 4:
 | |
|         PWMx->MR4 = MatchValue;
 | |
|         break;
 | |
| 
 | |
|     case 5:
 | |
|         PWMx->MR5 = MatchValue;
 | |
|         break;
 | |
| 
 | |
|     case 6:
 | |
|         PWMx->MR6 = MatchValue;
 | |
|         break;
 | |
|     }
 | |
| 
 | |
|     // Write Latch register
 | |
|     PWMx->LER |= PWM_LER_EN_MATCHn_LATCH(MatchChannel);
 | |
| 
 | |
|     // In case of update now
 | |
|     if (UpdateType == PWM_MATCH_UPDATE_NOW)
 | |
|     {
 | |
|         PWMx->TCR |= PWM_TCR_COUNTER_RESET;
 | |
|         PWMx->TCR &= (~PWM_TCR_COUNTER_RESET) & PWM_TCR_BITMASK;
 | |
|     }
 | |
| }
 | |
| 
 | |
| /********************************************************************//**
 | |
|  * @brief       Update value for multi PWM channel with update type option
 | |
|  *              at the same time
 | |
|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
 | |
|  * @param[in]   MatchStruct Structure that contents match value of 7 pwm channels
 | |
|  * @param[in]   UpdateType Type of Update, should be:
 | |
|  *              - PWM_MATCH_UPDATE_NOW: The update value will be updated for
 | |
|  *                  this channel immediately
 | |
|  *              - PWM_MATCH_UPDATE_NEXT_RST: The update value will be updated for
 | |
|  *                  this channel on next reset by a PWM Match event.
 | |
|  * @return      None
 | |
|  *********************************************************************/
 | |
| void PWM_MultiMatchUpdate(LPC_PWM_TypeDef *PWMx, PWM_Match_T *MatchStruct , uint8_t UpdateType)
 | |
| {
 | |
|     uint8_t LatchValue = 0;
 | |
|     uint8_t i;
 | |
| 
 | |
|     CHECK_PARAM(PARAM_PWMx(PWMx));
 | |
|     CHECK_PARAM(PARAM_PWM_MATCH_UPDATE(UpdateType));
 | |
| 
 | |
|     //Update match value
 | |
|     for(i=0;i<7;i++)
 | |
|     {
 | |
|         if(MatchStruct[i].Status == SET)
 | |
|         {
 | |
|             if(i<4)
 | |
|                 *((volatile unsigned int *)(&(PWMx->MR0) + i)) = MatchStruct[i].Matchvalue;
 | |
|             else
 | |
|             {
 | |
|                 *((volatile unsigned int *)(&(PWMx->MR4) + (i-4))) = MatchStruct[i].Matchvalue;
 | |
|             }
 | |
|             LatchValue |=(1<<i);
 | |
|         }
 | |
|     }
 | |
|     //set update for multi-channel at the same time
 | |
|     PWMx->LER = LatchValue;
 | |
| 
 | |
|     // In case of update now
 | |
|     if (UpdateType == PWM_MATCH_UPDATE_NOW)
 | |
|     {
 | |
|         PWMx->TCR |= PWM_TCR_COUNTER_RESET;
 | |
|         PWMx->TCR &= (~PWM_TCR_COUNTER_RESET) & PWM_TCR_BITMASK;
 | |
|     }
 | |
| }
 | |
| /********************************************************************//**
 | |
|  * @brief       Configure Edge mode for each PWM channel
 | |
|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
 | |
|  * @param[in]   PWMChannel PWM channel, should be in range from 2 to 6
 | |
|  * @param[in]   ModeOption PWM mode option, should be:
 | |
|  *              - PWM_CHANNEL_SINGLE_EDGE: Single Edge mode
 | |
|  *              - PWM_CHANNEL_DUAL_EDGE: Dual Edge mode
 | |
|  * @return      None
 | |
|  * Note: PWM Channel 1 can not be selected for mode option
 | |
|  *********************************************************************/
 | |
| void PWM_ChannelConfig(LPC_PWM_TypeDef *PWMx, uint8_t PWMChannel, uint8_t ModeOption)
 | |
| {
 | |
|     CHECK_PARAM(PARAM_PWMx(PWMx));
 | |
|     CHECK_PARAM(PARAM_PWM1_EDGE_MODE_CHANNEL(PWMChannel));
 | |
|     CHECK_PARAM(PARAM_PWM_CHANNEL_EDGE(ModeOption));
 | |
| 
 | |
|     // Single edge mode
 | |
|     if (ModeOption == PWM_CHANNEL_SINGLE_EDGE)
 | |
|     {
 | |
|         PWMx->PCR &= (~PWM_PCR_PWMSELn(PWMChannel)) & PWM_PCR_BITMASK;
 | |
|     }
 | |
|     // Double edge mode
 | |
|     else if (PWM_CHANNEL_DUAL_EDGE)
 | |
|     {
 | |
|         PWMx->PCR |= PWM_PCR_PWMSELn(PWMChannel);
 | |
|     }
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| /********************************************************************//**
 | |
|  * @brief       Enable/Disable PWM channel output
 | |
|  * @param[in]   PWMx    PWM peripheral selected, should be LPC_PWM1
 | |
|  * @param[in]   PWMChannel PWM channel, should be in range from 1 to 6
 | |
|  * @param[in]   NewState New State of this function, should be:
 | |
|  *              - ENABLE: Enable this PWM channel output
 | |
|  *              - DISABLE: Disable this PWM channel output
 | |
|  * @return      None
 | |
|  *********************************************************************/
 | |
| void PWM_ChannelCmd(LPC_PWM_TypeDef *PWMx, uint8_t PWMChannel, FunctionalState NewState)
 | |
| {
 | |
|     CHECK_PARAM(PARAM_PWMx(PWMx));
 | |
|     CHECK_PARAM(PARAM_PWM1_CHANNEL(PWMChannel));
 | |
| 
 | |
|     if (NewState == ENABLE)
 | |
|     {
 | |
|         PWMx->PCR |= PWM_PCR_PWMENAn(PWMChannel);
 | |
|     }
 | |
|     else
 | |
|     {
 | |
|         PWMx->PCR &= (~PWM_PCR_PWMENAn(PWMChannel)) & PWM_PCR_BITMASK;
 | |
|     }
 | |
| }
 | |
| 
 | |
| /**
 | |
|  * @}
 | |
|  */
 | |
| 
 | |
| #endif /* _PWM */
 | |
| 
 | |
| /**
 | |
|  * @}
 | |
|  */
 | |
| 
 | |
| /* --------------------------------- End Of File ------------------------------ */
 | 
