186 lines
6.1 KiB
C
186 lines
6.1 KiB
C
/****************************************************************************
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* arch/arm/src/kl/kl_pwm.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_KL_KL_PWM_H
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#define __ARCH_ARM_SRC_KL_KL_PWM_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "chip.h"
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/* Check if PWM support for any channel is enabled. */
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#if defined(CONFIG_KL_TPM0_PWM) || defined(CONFIG_KL_TPM1_PWM) || \
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defined(CONFIG_KL_TPM2_PWM)
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#include <arch/board/board.h>
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#include "hardware/kl_pinmux.h"
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* Timer devices may be used for different purposes. One special purpose is
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* to generate modulated outputs for such things as motor control.
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* If CONFIG_KL_TPMn is defined then the CONFIG_KL_TPMn_PWM must also be
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* defined to indicate that timer "n" is intended to be used for pulsed
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* output signal generation.
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*/
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#ifndef CONFIG_KL_TPM0
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# undef CONFIG_KL_TPM0_PWM
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#endif
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#ifndef CONFIG_KL_TPM1
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# undef CONFIG_KL_TPM1_PWM
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#endif
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#ifndef CONFIG_KL_TPM2
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# undef CONFIG_KL_TPM2_PWM
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#endif
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/* Check if PWM support for any channel is enabled. */
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#if defined(CONFIG_KL_TPM0_PWM) || defined(CONFIG_KL_TPM1_PWM) || \
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defined(CONFIG_KL_TPM2_PWM)
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/* For each timer that is enabled for PWM usage, we need the following
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* additional configuration settings:
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*
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* CONFIG_KL_TPMx_CHANNEL - Specifies the timer output channel {1,..,4}
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* PWM_TPMx_CHn - One of the values defined in chip/kl*_pinmap.h. In the
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* case where there are multiple pin selections, the correct setting must
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* be provided in the arch/board/board.h file.
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*/
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#ifdef CONFIG_KL_TPM0_PWM
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# if !defined(CONFIG_KL_TPM0_CHANNEL)
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# error "CONFIG_KL_TPM0_CHANNEL must be provided"
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# elif CONFIG_KL_TPM0_CHANNEL == 0
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# define PWM_TPM0_PINCFG GPIO_TPM0_CH0OUT
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# elif CONFIG_KL_TPM0_CHANNEL == 1
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# define PWM_TPM0_PINCFG GPIO_TPM0_CH1OUT
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# elif CONFIG_KL_TPM0_CHANNEL == 2
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# define PWM_TPM0_PINCFG GPIO_TPM0_CH2OUT
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# elif CONFIG_KL_TPM0_CHANNEL == 3
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# define PWM_TPM0_PINCFG GPIO_TPM0_CH3OUT
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# elif CONFIG_KL_TPM0_CHANNEL == 4
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# define PWM_TPM0_PINCFG GPIO_TPM0_CH4OUT
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# elif CONFIG_KL_TPM0_CHANNEL == 5
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# define PWM_TPM0_PINCFG GPIO_TPM0_CH5OUT
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# else
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# error "Unsupported value of CONFIG_KL_TPM1_CHANNEL"
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# endif
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#endif
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#ifdef CONFIG_KL_TPM1_PWM
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# if !defined(CONFIG_KL_TPM1_CHANNEL)
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# error "CONFIG_KL_TPM1_CHANNEL must be provided"
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# elif CONFIG_KL_TPM1_CHANNEL == 0
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# define PWM_TPM1_PINCFG GPIO_TPM1_CH0OUT
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# elif CONFIG_KL_TPM1_CHANNEL == 1
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# define PWM_TPM1_PINCFG GPIO_TPM1_CH1OUT
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# elif CONFIG_KL_TPM1_CHANNEL == 2
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# define PWM_TPM1_PINCFG GPIO_TPM1_CH2OUT
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# elif CONFIG_KL_TPM1_CHANNEL == 3
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# define PWM_TPM1_PINCFG GPIO_TPM1_CH3OUT
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# elif CONFIG_KL_TPM1_CHANNEL == 4
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# define PWM_TPM1_PINCFG GPIO_TPM1_CH4OUT
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# elif CONFIG_KL_TPM1_CHANNEL == 5
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# define PWM_TPM1_PINCFG GPIO_TPM1_CH5OUT
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# else
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# error "Unsupported value of CONFIG_KL_TPM2_CHANNEL"
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# endif
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#endif
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#ifdef CONFIG_KL_TPM2_PWM
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# if !defined(CONFIG_KL_TPM2_CHANNEL)
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# error "CONFIG_KL_TPM2_CHANNEL must be provided"
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# elif CONFIG_KL_TPM2_CHANNEL == 0
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# define PWM_TPM2_PINCFG GPIO_TPM2_CH0OUT
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# elif CONFIG_KL_TPM2_CHANNEL == 1
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# define PWM_TPM2_PINCFG GPIO_TPM2_CH1OUT
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# elif CONFIG_KL_TPM2_CHANNEL == 2
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# define PWM_TPM2_PINCFG GPIO_TPM2_CH2OUT
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# elif CONFIG_KL_TPM2_CHANNEL == 3
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# define PWM_TPM2_PINCFG GPIO_TPM2_CH3OUT
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# elif CONFIG_KL_TPM2_CHANNEL == 4
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# define PWM_TPM2_PINCFG GPIO_TPM2_CH4OUT
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# elif CONFIG_KL_TPM2_CHANNEL == 5
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# define PWM_TPM2_PINCFG GPIO_TPM2_CH5OUT
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# else
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# error "Unsupported value of CONFIG_KL_TPM3_CHANNEL"
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# endif
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Functions Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: kl_pwminitialize
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*
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* Description:
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* Initialize one timer for use with the upper_level PWM driver.
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*
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* Input Parameters:
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* timer - A number identifying the timer use.
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*
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* Returned Value:
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* On success, a pointer to the KL lower half PWM driver is returned.
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* NULL is returned on any failure.
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*
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****************************************************************************/
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struct pwm_lowerhalf_s *kl_pwminitialize(int timer);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* CONFIG_KL_TPMx_PWM */
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#endif /* __ARCH_ARM_SRC_KL_KL_PWM_H */
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