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Diff: libs/LPC17xx/LPC17xxLib/src/lpc17xx_pwm.c
- Revision:
- 3:f151d08d335c
- Parent:
- 2:1df0b61d3b5a
diff -r 1df0b61d3b5a -r f151d08d335c libs/LPC17xx/LPC17xxLib/src/lpc17xx_pwm.c --- a/libs/LPC17xx/LPC17xxLib/src/lpc17xx_pwm.c Fri Feb 28 18:52:52 2014 -0800 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,585 +0,0 @@ -#ifdef __LPC17XX__ - -/********************************************************************** -* $Id$ lpc17xx_pwm.c 2011-03-31 -*//** -* @file lpc17xx_pwm.c -* @brief Contains all functions support for PWM firmware library on LPC17xx -* @version 2.1 -* @date 31. Mar. 2011 -* @author NXP MCU SW Application Team -* -* Copyright(C) 2011, NXP Semiconductor -* All rights reserved. -* -*********************************************************************** -* Software that is described herein is for illustrative purposes only -* which provides customers with programming information regarding the -* products. This software is supplied "AS IS" without any warranties. -* NXP Semiconductors assumes no responsibility or liability for the -* use of the software, conveys no license or title under any patent, -* copyright, or mask work right to the product. NXP Semiconductors -* reserves the right to make changes in the software without -* notification. NXP Semiconductors also make no representation or -* warranty that such application will be suitable for the specified -* use without further testing or modification. -**********************************************************************/ - -/* Peripheral group ----------------------------------------------------------- */ -/** @addtogroup PWM - * @{ - */ - -/* Includes ------------------------------------------------------------------- */ -#include "lpc17xx_pwm.h" -#include "lpc17xx_clkpwr.h" - -/* If this source file built with example, the LPC17xx FW library configuration - * file in each example directory ("lpc17xx_libcfg.h") must be included, - * otherwise the default FW library configuration file must be included instead - */ -#ifdef __BUILD_WITH_EXAMPLE__ -#include "lpc17xx_libcfg.h" -#else -#include "lpc17xx_libcfg_default.h" -#endif /* __BUILD_WITH_EXAMPLE__ */ - - -#ifdef _PWM - - -/* Public Functions ----------------------------------------------------------- */ -/** @addtogroup PWM_Public_Functions - * @{ - */ - - -/*********************************************************************//** - * @brief Check whether specified interrupt flag in PWM is set or not - * @param[in] PWMx: PWM peripheral, should be LPC_PWM1 - * @param[in] IntFlag: PWM interrupt flag, should be: - * - PWM_INTSTAT_MR0: Interrupt flag for PWM match channel 0 - * - PWM_INTSTAT_MR1: Interrupt flag for PWM match channel 1 - * - PWM_INTSTAT_MR2: Interrupt flag for PWM match channel 2 - * - PWM_INTSTAT_MR3: Interrupt flag for PWM match channel 3 - * - PWM_INTSTAT_MR4: Interrupt flag for PWM match channel 4 - * - PWM_INTSTAT_MR5: Interrupt flag for PWM match channel 5 - * - PWM_INTSTAT_MR6: Interrupt flag for PWM match channel 6 - * - PWM_INTSTAT_CAP0: Interrupt flag for capture input 0 - * - PWM_INTSTAT_CAP1: Interrupt flag for capture input 1 - * @return New State of PWM interrupt flag (SET or RESET) - **********************************************************************/ -IntStatus PWM_GetIntStatus(LPC_PWM_TypeDef *PWMx, uint32_t IntFlag) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_PWM_INTSTAT(IntFlag)); - - return ((PWMx->IR & IntFlag) ? SET : RESET); -} - - - -/*********************************************************************//** - * @brief Clear specified PWM Interrupt pending - * @param[in] PWMx: PWM peripheral, should be LPC_PWM1 - * @param[in] IntFlag: PWM interrupt flag, should be: - * - PWM_INTSTAT_MR0: Interrupt flag for PWM match channel 0 - * - PWM_INTSTAT_MR1: Interrupt flag for PWM match channel 1 - * - PWM_INTSTAT_MR2: Interrupt flag for PWM match channel 2 - * - PWM_INTSTAT_MR3: Interrupt flag for PWM match channel 3 - * - PWM_INTSTAT_MR4: Interrupt flag for PWM match channel 4 - * - PWM_INTSTAT_MR5: Interrupt flag for PWM match channel 5 - * - PWM_INTSTAT_MR6: Interrupt flag for PWM match channel 6 - * - PWM_INTSTAT_CAP0: Interrupt flag for capture input 0 - * - PWM_INTSTAT_CAP1: Interrupt flag for capture input 1 - * @return None - **********************************************************************/ -void PWM_ClearIntPending(LPC_PWM_TypeDef *PWMx, uint32_t IntFlag) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_PWM_INTSTAT(IntFlag)); - PWMx->IR = IntFlag; -} - - - -/*****************************************************************************//** -* @brief Fills each PWM_InitStruct member with its default value: -* - If PWMCounterMode = PWM_MODE_TIMER: -* + PrescaleOption = PWM_TIMER_PRESCALE_USVAL -* + PrescaleValue = 1 -* - If PWMCounterMode = PWM_MODE_COUNTER: -* + CountInputSelect = PWM_COUNTER_PCAP1_0 -* + CounterOption = PWM_COUNTER_RISING -* @param[in] PWMTimerCounterMode Timer or Counter mode, should be: -* - PWM_MODE_TIMER: Counter of PWM peripheral is in Timer mode -* - PWM_MODE_COUNTER: Counter of PWM peripheral is in Counter mode -* @param[in] PWM_InitStruct Pointer to structure (PWM_TIMERCFG_Type or -* PWM_COUNTERCFG_Type) which will be initialized. -* @return None -* Note: PWM_InitStruct pointer will be assigned to corresponding structure -* (PWM_TIMERCFG_Type or PWM_COUNTERCFG_Type) due to PWMTimerCounterMode. -*******************************************************************************/ -void PWM_ConfigStructInit(uint8_t PWMTimerCounterMode, void *PWM_InitStruct) -{ - PWM_TIMERCFG_Type *pTimeCfg; - PWM_COUNTERCFG_Type *pCounterCfg; - CHECK_PARAM(PARAM_PWM_TC_MODE(PWMTimerCounterMode)); - - pTimeCfg = (PWM_TIMERCFG_Type *) PWM_InitStruct; - pCounterCfg = (PWM_COUNTERCFG_Type *) PWM_InitStruct; - - if (PWMTimerCounterMode == PWM_MODE_TIMER ) - { - pTimeCfg->PrescaleOption = PWM_TIMER_PRESCALE_USVAL; - pTimeCfg->PrescaleValue = 1; - } - else if (PWMTimerCounterMode == PWM_MODE_COUNTER) - { - pCounterCfg->CountInputSelect = PWM_COUNTER_PCAP1_0; - pCounterCfg->CounterOption = PWM_COUNTER_RISING; - } -} - - -/*********************************************************************//** - * @brief Initializes the PWMx peripheral corresponding to the specified - * parameters in the PWM_ConfigStruct. - * @param[in] PWMx PWM peripheral, should be LPC_PWM1 - * @param[in] PWMTimerCounterMode Timer or Counter mode, should be: - * - PWM_MODE_TIMER: Counter of PWM peripheral is in Timer mode - * - PWM_MODE_COUNTER: Counter of PWM peripheral is in Counter mode - * @param[in] PWM_ConfigStruct Pointer to structure (PWM_TIMERCFG_Type or - * PWM_COUNTERCFG_Type) which will be initialized. - * @return None - * Note: PWM_ConfigStruct pointer will be assigned to corresponding structure - * (PWM_TIMERCFG_Type or PWM_COUNTERCFG_Type) due to PWMTimerCounterMode. - **********************************************************************/ -void PWM_Init(LPC_PWM_TypeDef *PWMx, uint32_t PWMTimerCounterMode, void *PWM_ConfigStruct) -{ - PWM_TIMERCFG_Type *pTimeCfg; - PWM_COUNTERCFG_Type *pCounterCfg; - uint64_t clkdlycnt; - - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_PWM_TC_MODE(PWMTimerCounterMode)); - - pTimeCfg = (PWM_TIMERCFG_Type *)PWM_ConfigStruct; - pCounterCfg = (PWM_COUNTERCFG_Type *)PWM_ConfigStruct; - - - CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCPWM1, ENABLE); - CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_PWM1, CLKPWR_PCLKSEL_CCLK_DIV_4); - // Get peripheral clock of PWM1 - clkdlycnt = (uint64_t) CLKPWR_GetPCLK (CLKPWR_PCLKSEL_PWM1); - - - // Clear all interrupts pending - PWMx->IR = 0xFF & PWM_IR_BITMASK; - PWMx->TCR = 0x00; - PWMx->CTCR = 0x00; - PWMx->MCR = 0x00; - PWMx->CCR = 0x00; - PWMx->PCR = 0x00; - PWMx->LER = 0x00; - - if (PWMTimerCounterMode == PWM_MODE_TIMER) - { - CHECK_PARAM(PARAM_PWM_TIMER_PRESCALE(pTimeCfg->PrescaleOption)); - - /* Absolute prescale value */ - if (pTimeCfg->PrescaleOption == PWM_TIMER_PRESCALE_TICKVAL) - { - PWMx->PR = pTimeCfg->PrescaleValue - 1; - } - /* uSecond prescale value */ - else - { - clkdlycnt = (clkdlycnt * pTimeCfg->PrescaleValue) / 1000000; - PWMx->PR = ((uint32_t) clkdlycnt) - 1; - } - - } - else if (PWMTimerCounterMode == PWM_MODE_COUNTER) - { - CHECK_PARAM(PARAM_PWM_COUNTER_INPUTSEL(pCounterCfg->CountInputSelect)); - CHECK_PARAM(PARAM_PWM_COUNTER_EDGE(pCounterCfg->CounterOption)); - - PWMx->CTCR |= (PWM_CTCR_MODE((uint32_t)pCounterCfg->CounterOption)) \ - | (PWM_CTCR_SELECT_INPUT((uint32_t)pCounterCfg->CountInputSelect)); - } -} - -/*********************************************************************//** - * @brief De-initializes the PWM peripheral registers to their -* default reset values. - * @param[in] PWMx PWM peripheral selected, should be LPC_PWM1 - * @return None - **********************************************************************/ -void PWM_DeInit (LPC_PWM_TypeDef *PWMx) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - - // Disable PWM control (timer, counter and PWM) - PWMx->TCR = 0x00; - CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCPWM1, DISABLE); - -} - - -/*********************************************************************//** - * @brief Enable/Disable PWM peripheral - * @param[in] PWMx PWM peripheral selected, should be LPC_PWM1 - * @param[in] NewState New State of this function, should be: - * - ENABLE: Enable PWM peripheral - * - DISABLE: Disable PWM peripheral - * @return None - **********************************************************************/ -void PWM_Cmd(LPC_PWM_TypeDef *PWMx, FunctionalState NewState) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); - - if (NewState == ENABLE) - { - PWMx->TCR |= PWM_TCR_PWM_ENABLE; - } - else - { - PWMx->TCR &= (~PWM_TCR_PWM_ENABLE) & PWM_TCR_BITMASK; - } -} - - -/*********************************************************************//** - * @brief Enable/Disable Counter in PWM peripheral - * @param[in] PWMx PWM peripheral selected, should be LPC_PWM1 - * @param[in] NewState New State of this function, should be: - * - ENABLE: Enable Counter in PWM peripheral - * - DISABLE: Disable Counter in PWM peripheral - * @return None - **********************************************************************/ -void PWM_CounterCmd(LPC_PWM_TypeDef *PWMx, FunctionalState NewState) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); - if (NewState == ENABLE) - { - PWMx->TCR |= PWM_TCR_COUNTER_ENABLE; - } - else - { - PWMx->TCR &= (~PWM_TCR_COUNTER_ENABLE) & PWM_TCR_BITMASK; - } -} - - -/*********************************************************************//** - * @brief Reset Counter in PWM peripheral - * @param[in] PWMx PWM peripheral selected, should be LPC_PWM1 - * @return None - **********************************************************************/ -void PWM_ResetCounter(LPC_PWM_TypeDef *PWMx) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - PWMx->TCR |= PWM_TCR_COUNTER_RESET; - PWMx->TCR &= (~PWM_TCR_COUNTER_RESET) & PWM_TCR_BITMASK; -} - - -/*********************************************************************//** - * @brief Configures match for PWM peripheral - * @param[in] PWMx PWM peripheral selected, should be LPC_PWM1 - * @param[in] PWM_MatchConfigStruct Pointer to a PWM_MATCHCFG_Type structure -* that contains the configuration information for the -* specified PWM match function. - * @return None - **********************************************************************/ -void PWM_ConfigMatch(LPC_PWM_TypeDef *PWMx, PWM_MATCHCFG_Type *PWM_MatchConfigStruct) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_PWM1_MATCH_CHANNEL(PWM_MatchConfigStruct->MatchChannel)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_MatchConfigStruct->IntOnMatch)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_MatchConfigStruct->ResetOnMatch)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_MatchConfigStruct->StopOnMatch)); - - //interrupt on MRn - if (PWM_MatchConfigStruct->IntOnMatch == ENABLE) - { - PWMx->MCR |= PWM_MCR_INT_ON_MATCH(PWM_MatchConfigStruct->MatchChannel); - } - else - { - PWMx->MCR &= (~PWM_MCR_INT_ON_MATCH(PWM_MatchConfigStruct->MatchChannel)) \ - & PWM_MCR_BITMASK; - } - - //reset on MRn - if (PWM_MatchConfigStruct->ResetOnMatch == ENABLE) - { - PWMx->MCR |= PWM_MCR_RESET_ON_MATCH(PWM_MatchConfigStruct->MatchChannel); - } - else - { - PWMx->MCR &= (~PWM_MCR_RESET_ON_MATCH(PWM_MatchConfigStruct->MatchChannel)) \ - & PWM_MCR_BITMASK; - } - - //stop on MRn - if (PWM_MatchConfigStruct->StopOnMatch == ENABLE) - { - PWMx->MCR |= PWM_MCR_STOP_ON_MATCH(PWM_MatchConfigStruct->MatchChannel); - } - else - { - PWMx->MCR &= (~PWM_MCR_STOP_ON_MATCH(PWM_MatchConfigStruct->MatchChannel)) \ - & PWM_MCR_BITMASK; - } -} - - -/*********************************************************************//** - * @brief Configures capture input for PWM peripheral - * @param[in] PWMx PWM peripheral selected, should be LPC_PWM1 - * @param[in] PWM_CaptureConfigStruct Pointer to a PWM_CAPTURECFG_Type structure -* that contains the configuration information for the -* specified PWM capture input function. - * @return None - **********************************************************************/ -void PWM_ConfigCapture(LPC_PWM_TypeDef *PWMx, PWM_CAPTURECFG_Type *PWM_CaptureConfigStruct) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_PWM1_CAPTURE_CHANNEL(PWM_CaptureConfigStruct->CaptureChannel)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_CaptureConfigStruct->FallingEdge)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_CaptureConfigStruct->IntOnCaption)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(PWM_CaptureConfigStruct->RisingEdge)); - - if (PWM_CaptureConfigStruct->RisingEdge == ENABLE) - { - PWMx->CCR |= PWM_CCR_CAP_RISING(PWM_CaptureConfigStruct->CaptureChannel); - } - else - { - PWMx->CCR &= (~PWM_CCR_CAP_RISING(PWM_CaptureConfigStruct->CaptureChannel)) \ - & PWM_CCR_BITMASK; - } - - if (PWM_CaptureConfigStruct->FallingEdge == ENABLE) - { - PWMx->CCR |= PWM_CCR_CAP_FALLING(PWM_CaptureConfigStruct->CaptureChannel); - } - else - { - PWMx->CCR &= (~PWM_CCR_CAP_FALLING(PWM_CaptureConfigStruct->CaptureChannel)) \ - & PWM_CCR_BITMASK; - } - - if (PWM_CaptureConfigStruct->IntOnCaption == ENABLE) - { - PWMx->CCR |= PWM_CCR_INT_ON_CAP(PWM_CaptureConfigStruct->CaptureChannel); - } - else - { - PWMx->CCR &= (~PWM_CCR_INT_ON_CAP(PWM_CaptureConfigStruct->CaptureChannel)) \ - & PWM_CCR_BITMASK; - } -} - - -/*********************************************************************//** - * @brief Read value of capture register PWM peripheral - * @param[in] PWMx PWM peripheral selected, should be LPC_PWM1 - * @param[in] CaptureChannel: capture channel number, should be in - * range 0 to 1 - * @return Value of capture register - **********************************************************************/ -uint32_t PWM_GetCaptureValue(LPC_PWM_TypeDef *PWMx, uint8_t CaptureChannel) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_PWM1_CAPTURE_CHANNEL(CaptureChannel)); - - switch (CaptureChannel) - { - case 0: - return PWMx->CR0; - - case 1: - return PWMx->CR1; - - default: - return (0); - } -} - - -/********************************************************************//** - * @brief Update value for each PWM channel with update type option - * @param[in] PWMx PWM peripheral selected, should be LPC_PWM1 - * @param[in] MatchChannel Match channel - * @param[in] MatchValue Match value - * @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_MatchUpdate(LPC_PWM_TypeDef *PWMx, uint8_t MatchChannel, \ - uint32_t MatchValue, uint8_t UpdateType) -{ - CHECK_PARAM(PARAM_PWMx(PWMx)); - CHECK_PARAM(PARAM_PWM1_MATCH_CHANNEL(MatchChannel)); - CHECK_PARAM(PARAM_PWM_MATCH_UPDATE(UpdateType)); - - switch (MatchChannel) - { - case 0: - PWMx->MR0 = MatchValue; - break; - - case 1: - PWMx->MR1 = MatchValue; - break; - - case 2: - PWMx->MR2 = MatchValue; - break; - - case 3: - PWMx->MR3 = MatchValue; - break; - - 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 ------------------------------ */ -#endif /* __LPC17XX__ */