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Kinetis KL: PWM driver from Alan Carvalho de Assis
This commit is contained in:
Gregory Nutt
@@ -6013,3 +6013,5 @@
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accesses. This driver in its current state is intended only to
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support I2C testing and would not be appropriate to used for any real
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driver application. (2013-11-10).
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* arch/arm/src/kl/kl_pwm.c and .h: PWM driver for the Freescale
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Kinetis KL family from Alan Carvalho de Assis (2013-11-10).
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@@ -269,6 +269,71 @@ config KL_SYSTICK_CORECLK_DIV16
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endchoice
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config KL_TPM0_PWM
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bool "TPM0 PWM"
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default n
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depends on KL_TPM0
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---help---
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Reserve timer 0 for use by PWM
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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. If KL_TPM0
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is defined then THIS following may also be defined to indicate that
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the timer is intended to be used for pulsed output modulation.
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config KL_TPM0_CHANNEL
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int "TPM0 PWM Output Channel"
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default 0
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range 0 5
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depends on KL_TPM0_PWM
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---help---
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If TIM0 is enabled for PWM usage, you also need specifies the timer output
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channel {0,..,5}
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config KL_TPM1_PWM
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bool "TPM1 PWM"
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default n
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depends on KL_TPM1
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---help---
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Reserve timer 1 for use by PWM
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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. If KL_TPM1
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is defined then THIS following may also be defined to indicate that
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the timer is intended to be used for pulsed output modulation.
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config KL_TPM1_CHANNEL
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int "TPM1 PWM Output Channel"
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default 0
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range 0 1 if ARCH_CHIP_MKL25Z128
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range 0 5 if !ARCH_CHIP_MKL25Z128
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depends on KL_TPM1_PWM
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---help---
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If TIM1 is enabled for PWM usage, you also need specifies the timer output
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channel {0,..,5}
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config KL_TPM2_PWM
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bool "TPM2 PWM"
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default n
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depends on KL_TPM2
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---help---
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Reserve timer 2 for use by PWM
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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. If KL_TPM2
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is defined then THIS following may also be defined to indicate that
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the timer is intended to be used for pulsed output modulation.
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config KL_TPM2_CHANNEL
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int "TPM2 PWM Output Channel"
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default 0
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range 0 1 if ARCH_CHIP_MKL25Z128
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range 0 5 if !ARCH_CHIP_MKL25Z128
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depends on KL_TPM2_PWM
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---help---
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If TIM2 is enabled for PWM usage, you also need specifies the timer output
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channel {0,..,5}
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comment "Kinetis GPIO Interrupt Configuration"
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config GPIO_IRQ
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@@ -83,6 +83,10 @@ CHIP_CSRCS += kl_spi.c
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endif
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endif
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ifeq ($(CONFIG_PWM),y)
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CHIP_CSRCS += kl_pwm.c
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endif
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ifeq ($(CONFIG_DEBUG),y)
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CHIP_CSRCS += kl_dumpgpio.c
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endif
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,197 @@
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/************************************************************************************
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* arch/arm/src/kl/kl_pwm.h
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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* Alan Carvalho de Assis <acassis@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_KL_KINETIS_PWM_H
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#define __ARCH_ARM_SRC_KL_KINETIS_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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/************************************************************************************
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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. If CONFIG_KL_TPMn
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* is defined then the CONFIG_KL_TPMn_PWM must also be defined to indicate that
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* timer "n" is intended to be used for pulsed 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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#include <arch/board/board.h>
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#include "chip/kl_pinmux.h"
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/* For each timer that is enabled for PWM usage, we need the following additional
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* 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/stm32*_pinmap.h. In the case
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* where there are multiple pin selections, the correct setting must be provided
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* in the arch/board/board.h file.
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*
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* NOTE: The STM32 timers are each capable of generating different signals on
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* each of the four channels with different duty cycles. That capability is
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* not supported by this driver: Only one output channel per timer.
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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_TPM1_CH2OUT
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# elif CONFIG_KL_TPM0_CHANNEL == 3
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# define PWM_TPM0_PINCFG GPIO_TPM1_CH3OUT
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# elif CONFIG_KL_TPM0_CHANNEL == 4
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# define PWM_TPM0_PINCFG GPIO_TPM1_CH4OUT
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# elif CONFIG_KL_TPM0_CHANNEL == 5
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# define PWM_TPM0_PINCFG GPIO_TPM1_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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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Functions
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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. The number of valid timer
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* IDs varies with the STM32 MCU and MCU family but is somewhere in
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* the range of {1,..,14}.
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*
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* Returned Value:
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* On success, a pointer to the STM32 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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FAR 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_KINETIS_PWM_H */
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