mirror of
https://github.com/apache/nuttx.git
synced 2026-06-04 14:53:47 +08:00
Merged in kfazz/nuttx/kinetis_pwm (pull request #50)
kinetis pwm support
This commit is contained in:
Gregory Nutt
@@ -383,6 +383,69 @@ config KINETIS_PIT
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endmenu
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config KINETIS_FTM0_PWM
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bool "FTM0 PWM"
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default n
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depends on KINETIS_FTM0
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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 KINETIS_FTM0
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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 KINETIS_FTM0_CHANNEL
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int "FTM0 PWM Output Channel"
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default 0
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range 0 7
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depends on KINETIS_FTM0_PWM
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---help---
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If FTM0 is enabled for PWM usage, you also need specifies the timer output
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channel {0,..,7}
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config KINETIS_FTM1_PWM
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bool "FTM1 PWM"
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default n
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depends on KINETIS_FTM1
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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 KINETIS_FTM1
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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 KINETIS_FTM1_CHANNEL
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int "FTM1 PWM Output Channel"
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default 0
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range 0 1
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depends on KINETIS_FTM1_PWM
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---help---
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If FTM1 is enabled for PWM usage, you also need specifies the timer output
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channel {0,..,1}
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config KINETIS_FTM2_PWM
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bool "FTM2 PWM"
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default n
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depends on KINETIS_FTM2
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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 KINETIS_FTM2
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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 KINETIS_FTM2_CHANNEL
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int "FTM2 PWM Output Channel"
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default 0
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range 0 1
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depends on KINETIS_FTM2_PWM
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---help---
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If FTM2 is enabled for PWM usage, you also need specifies the timer output
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channel {0,..,1}
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comment "Kinetis GPIO Interrupt Configuration"
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config GPIO_IRQ
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@@ -108,7 +108,7 @@ CHIP_CSRCS += kinetis_pinirq.c
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endif
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ifeq ($(CONFIG_DEBUG_GPIO),y)
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CHIP_CSRCS += kinetis_pindbg.c
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CHIP_CSRCS += kinetis_pindump.c
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endif
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ifeq ($(CONFIG_KINETIS_SDHC),y)
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@@ -127,6 +127,10 @@ ifeq ($(CONFIG_KINETIS_DMA),y)
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CHIP_CSRCS += kinetis_dma.c kinetis_pindma.c
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endif
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ifeq ($(CONFIG_PWM),y)
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CHIP_CSRCS += kinetis_pwm.c
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endif
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ifeq ($(CONFIG_NET),y)
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ifeq ($(CONFIG_KINETIS_ENET),y)
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CHIP_CSRCS += kinetis_enet.c
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@@ -567,7 +567,7 @@ void kinetis_pindmadisable(uint32_t pinset);
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************************************************************************************/
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#ifdef CONFIG_DEBUG_GPIO
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int kinetis_pindump(uint32_t pinset, const char *msg);
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void kinetis_pindump(uint32_t pinset, const char *msg);
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#else
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# define kinetis_pindump(p,m)
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#endif
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@@ -0,0 +1,135 @@
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/****************************************************************************
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* arch/arm/src/kinetis/kinetis_pindump.c
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*
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* Copyright (C) 2013, 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* 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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <debug.h>
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#include <nuttx/irq.h>
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#include "up_arch.h"
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#include "kinetis.h"
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#include "kinetis_gpio.h"
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#include "kinetis_port.h"
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#ifdef CONFIG_DEBUG_GPIO
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* Port letters for prettier debug output */
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static const char g_portchar[KINETIS_NPORTS] =
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{
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#if KINETIS_NPORTS > 9
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# error "Additional support required for this number of GPIOs"
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#elif KINETIS_NPORTS > 8
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I'
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#elif KINETIS_NPORTS > 7
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'
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#elif KINETIS_NPORTS > 6
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'A', 'B', 'C', 'D', 'E', 'F', 'G'
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#elif KINETIS_NPORTS > 5
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'A', 'B', 'C', 'D', 'E', 'F'
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#elif KINETIS_NPORTS > 4
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'A', 'B', 'C', 'D', 'E'
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#elif KINETIS_NPORTS > 3
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'A', 'B', 'C', 'D'
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#elif KINETIS_NPORTS > 2
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'A', 'B', 'C'
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#elif KINETIS_NPORTS > 1
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'A', 'B'
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#elif KINETIS_NPORTS > 0
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'A'
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#else
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# error "Bad number of GPIOs"
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#endif
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Function: kinetis_pindump
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*
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* Description:
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* Dump all GPIO registers associated with the provided pin description
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* along with a descriptive messasge.
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*
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****************************************************************************/
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void kinetis_pindump(uint32_t pinset, const char *msg)
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{
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irqstate_t flags;
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uintptr_t base;
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int port;
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/* Decode the port and pin. Use the port number to get the GPIO base
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* address.
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*/
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port = (pinset & _PIN_PORT_MASK) >> _PIN_PORT_SHIFT;
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DEBUGASSERT((unsigned)port < KINETIS_NPORTS);
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base = KINETIS_GPIO_BASE(port);
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/* The following requires exclusive access to the GPIO registers */
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flags = enter_critical_section();
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lldbg("GPIO%c pinset: %08x base: %08x -- %s\n",
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g_portchar[port], pinset, base, msg);
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lldbg(" PDOR: %08x PDIR: %08x PDDR: %08x\n",
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getreg32(base + KINETIS_GPIO_PDOR_OFFSET),
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getreg32(base + KINETIS_GPIO_PDIR_OFFSET),
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getreg32(base + KINETIS_GPIO_PDDR_OFFSET));
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leave_critical_section(flags);
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}
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#endif /* CONFIG_DEBUG_GPIO */
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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/kinetis/kinetis_pwm.h
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*
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* Copyright (C) 2013, 2016 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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* Ken Fazzone <kfazz01@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
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_KINETIS_KINETIS_PWM_H
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#define __ARCH_ARM_SRC_KINETIS_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_KINETIS_FTMn
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* is defined then the CONFIG_KINETIS_FTMn_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_KINETIS_FTM0
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# undef CONFIG_KINETIS_FTM0_PWM
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#endif
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#ifndef CONFIG_KINETIS_FTM1
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# undef CONFIG_KINETIS_FTM1_PWM
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#endif
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#ifndef CONFIG_KINETIS_FTM2
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# undef CONFIG_KINETIS_FTM2_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_KINETIS_FTM0_PWM) || defined(CONFIG_KINETIS_FTM1_PWM) || \
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defined(CONFIG_KINETIS_FTM2_PWM)
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#include <arch/board/board.h>
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#include "kinetis_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_KINETIS_FTMx_CHANNEL - Specifies the timer output channel {1,..,4}
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* PWM_FTMx_CHn - One of the values defined in kinetis*_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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#ifdef CONFIG_KINETIS_FTM0_PWM
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# if !defined(CONFIG_KINETIS_FTM0_CHANNEL)
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# error "CONFIG_KINETIS_FTM0_CHANNEL must be provided"
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# elif CONFIG_KINETIS_FTM0_CHANNEL == 0
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# define PWM_FTM0_PINCFG GPIO_FTM0_CH0OUT
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# elif CONFIG_KINETIS_FTM0_CHANNEL == 1
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# define PWM_FTM0_PINCFG GPIO_FTM0_CH1OUT
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# elif CONFIG_KINETIS_FTM0_CHANNEL == 2
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# define PWM_FTM0_PINCFG GPIO_FTM0_CH2OUT
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# elif CONFIG_KINETIS_FTM0_CHANNEL == 3
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# define PWM_FTM0_PINCFG GPIO_FTM0_CH3OUT
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# elif CONFIG_KINETIS_FTM0_CHANNEL == 4
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# define PWM_FTM0_PINCFG GPIO_FTM0_CH4OUT
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# elif CONFIG_KINETIS_FTM0_CHANNEL == 5
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# define PWM_FTM0_PINCFG GPIO_FTM0_CH5OUT
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# elif CONFIG_KINETIS_FTM0_CHANNEL == 6
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# define PWM_FTM0_PINCFG GPIO_FTM0_CH6OUT
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# elif CONFIG_KINETIS_FTM0_CHANNEL == 7
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# define PWM_FTM0_PINCFG GPIO_FTM0_CH7OUT
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# else
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# error "Unsupported value of CONFIG_KINETIS_FTM1_CHANNEL"
|
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# endif
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#endif
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|
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#ifdef CONFIG_KINETIS_FTM1_PWM
|
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# if !defined(CONFIG_KINETIS_FTM1_CHANNEL)
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# error "CONFIG_KINETIS_FTM1_CHANNEL must be provided"
|
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# elif CONFIG_KINETIS_FTM1_CHANNEL == 0
|
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# define PWM_FTM1_PINCFG GPIO_FTM1_CH0OUT
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# elif CONFIG_KINETIS_FTM1_CHANNEL == 1
|
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# define PWM_FTM1_PINCFG GPIO_FTM1_CH1OUT
|
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# elif CONFIG_KINETIS_FTM1_CHANNEL == 2
|
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# define PWM_FTM1_PINCFG GPIO_FTM1_CH2OUT
|
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# elif CONFIG_KINETIS_FTM1_CHANNEL == 3
|
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# define PWM_FTM1_PINCFG GPIO_FTM1_CH3OUT
|
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# elif CONFIG_KINETIS_FTM1_CHANNEL == 4
|
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# define PWM_FTM1_PINCFG GPIO_FTM1_CH4OUT
|
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# elif CONFIG_KINETIS_FTM1_CHANNEL == 5
|
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# define PWM_FTM1_PINCFG GPIO_FTM1_CH5OUT
|
||||
# else
|
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# error "Unsupported value of CONFIG_KINETIS_FTM2_CHANNEL"
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_KINETIS_FTM2_PWM
|
||||
# if !defined(CONFIG_KINETIS_FTM2_CHANNEL)
|
||||
# error "CONFIG_KINETIS_FTM2_CHANNEL must be provided"
|
||||
# elif CONFIG_KINETIS_FTM2_CHANNEL == 0
|
||||
# define PWM_FTM2_PINCFG GPIO_FTM2_CH0OUT
|
||||
# elif CONFIG_KINETIS_FTM2_CHANNEL == 1
|
||||
# define PWM_FTM2_PINCFG GPIO_FTM2_CH1OUT
|
||||
# elif CONFIG_KINETIS_FTM2_CHANNEL == 2
|
||||
# define PWM_FTM2_PINCFG GPIO_FTM2_CH2OUT
|
||||
# elif CONFIG_KINETIS_FTM2_CHANNEL == 3
|
||||
# define PWM_FTM2_PINCFG GPIO_FTM2_CH3OUT
|
||||
# elif CONFIG_KINETIS_FTM2_CHANNEL == 4
|
||||
# define PWM_FTM2_PINCFG GPIO_FTM2_CH4OUT
|
||||
# elif CONFIG_KINETIS_FTM2_CHANNEL == 5
|
||||
# define PWM_FTM2_PINCFG GPIO_FTM2_CH5OUT
|
||||
# else
|
||||
# error "Unsupported value of CONFIG_KINETIS_FTM3_CHANNEL"
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Public Types
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Data
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: kinetis_pwminitialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize one timer for use with the upper_level PWM driver.
|
||||
*
|
||||
* Input Parameters:
|
||||
* timer - A number identifying the timer use.
|
||||
*
|
||||
* Returned Value:
|
||||
* On success, a pointer to the kinetis lower half PWM driver is returned.
|
||||
* NULL is returned on any failure.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
FAR struct pwm_lowerhalf_s *kinetis_pwminitialize(int timer);
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* CONFIG_KINETIS_FTMx_PWM */
|
||||
#endif /* __ARCH_ARM_SRC_KINETIS_KINETIS_PWM_H */
|
||||
@@ -141,6 +141,28 @@
|
||||
#define BOARD_FLEXBUS_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV3)
|
||||
#define BOARD_FLASHCLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV4)
|
||||
|
||||
/* PWM Configuration */
|
||||
/* FTM0 Channels */
|
||||
|
||||
#define GPIO_FTM0_CH0OUT PIN_FTM0_CH0_2 /* Pin 22: PTC1 */
|
||||
#define GPIO_FTM0_CH1OUT PIN_FTM0_CH1_2 /* Pin 23: PTC2 */
|
||||
#define GPIO_FTM0_CH2OUT PIN_FTM0_CH2_2 /* Pin 9: PTC3 */
|
||||
#define GPIO_FTM0_CH3OUT PIN_FTM0_CH3 /* Pin 10: PTC4 */
|
||||
#define GPIO_FTM0_CH4OUT PIN_FTM0_CH4 /* Pin 6: PTD4 */
|
||||
#define GPIO_FTM0_CH5OUT PIN_FTM0_CH5_2 /* Pin 20: PTD5 */
|
||||
#define GPIO_FTM0_CH6OUT PIN_FTM0_CH6_2 /* Pin 21: PTD6 */
|
||||
#define GPIO_FTM0_CH7OUT PIN_FTM0_CH7_2 /* Pin 5: PTD7 */
|
||||
|
||||
/* FTM1 Channels */
|
||||
|
||||
#define GPIO_FTM1_CH0OUT PIN_FTM1_CH0_1 /* Pin 3: PTA12 */
|
||||
#define GPIO_FTM1_CH1OUT PIN_FTM1_CH1_1 /* Pin 4: PTA13 */
|
||||
|
||||
/* FTM2 Channels */
|
||||
|
||||
#define GPIO_FTM2_CH0OUT PIN_FTM2_CH0 /* Pin 25: PTB18 */
|
||||
#define GPIO_FTM2_CH1OUT PIN_FTM2_CH1 /* Pin 32: PTB19 */
|
||||
|
||||
/* LED definitions ******************************************************************/
|
||||
/* A single LED is available driven by PTC5. The LED is grounded so bringing PTC5
|
||||
* high will illuminate the LED.
|
||||
|
||||
@@ -1,7 +1,7 @@
|
||||
############################################################################
|
||||
# configs/teensy-3.x/src/Makefile
|
||||
#
|
||||
# Copyright (C) 2015 Gregory Nutt. All rights reserved.
|
||||
# Copyright (C) 2015,2016 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
@@ -51,4 +51,8 @@ ifeq ($(CONFIG_LIB_BOARDCTL),y)
|
||||
CSRCS += k20_appinit.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_PWM),y)
|
||||
CSRCS += k20_pwm.c
|
||||
endif
|
||||
|
||||
include $(TOPDIR)/configs/Board.mk
|
||||
|
||||
@@ -0,0 +1,160 @@
|
||||
/************************************************************************************
|
||||
* configs/teensy-3.x/src/k20_pwm.c
|
||||
*
|
||||
* Copyright (C) 2015,2016 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
* Alan Carvalho de Assis <acassis@gmail.com>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/board.h>
|
||||
#include <nuttx/pwm.h>
|
||||
|
||||
#include <arch/board/board.h>
|
||||
|
||||
#include "chip.h"
|
||||
#include "up_arch.h"
|
||||
#include "kinetis_pwm.h"
|
||||
|
||||
/************************************************************************************
|
||||
* Pre-processor Definitions
|
||||
************************************************************************************/
|
||||
/* Configuration *******************************************************************/
|
||||
/* PWM
|
||||
*
|
||||
* The Kinetis Freedom board provides a LED on GPIO.
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_PWM
|
||||
|
||||
extern struct pwm_lowerhalf_s *kinetis_pwminitialize(int timer);
|
||||
|
||||
/************************************************************************************
|
||||
* Private Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: board_pwm_setup
|
||||
*
|
||||
* Description:
|
||||
* All Kinetis K20 architectures must provide the following interface to work with
|
||||
* examples/pwm.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
int board_pwm_setup(void)
|
||||
{
|
||||
static bool initialized = false;
|
||||
struct pwm_lowerhalf_s *pwm;
|
||||
int ret;
|
||||
|
||||
/* Have we already initialized? */
|
||||
|
||||
if (!initialized)
|
||||
{
|
||||
/* Call kinetis_pwminitialize() to get an instance of the PWM interface */
|
||||
#ifdef CONFIG_KINETIS_FTM0_PWM
|
||||
pwm = kinetis_pwminitialize(0);
|
||||
if (!pwm)
|
||||
{
|
||||
adbg("Failed to get the KL20 PWM lower half\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Register the PWM driver at "/dev/pwm0" */
|
||||
|
||||
ret = pwm_register("/dev/pwm0", pwm);
|
||||
if (ret < 0)
|
||||
{
|
||||
adbg("pwm_register failed: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Now we are initialized */
|
||||
#endif
|
||||
#ifdef CONFIG_KINETIS_FTM1_PWM
|
||||
pwm = kinetis_pwminitialize(1);
|
||||
if (!pwm)
|
||||
{
|
||||
adbg("Failed to get the KL20 PWM lower half\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Register the PWM driver at "/dev/pwm1" */
|
||||
|
||||
ret = pwm_register("/dev/pwm1", pwm);
|
||||
if (ret < 0)
|
||||
{
|
||||
adbg("pwm_register failed: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Now we are initialized */
|
||||
#endif
|
||||
#ifdef CONFIG_KINETIS_FTM2_PWM
|
||||
pwm = kinetis_pwminitialize(2);
|
||||
if (!pwm)
|
||||
{
|
||||
adbg("Failed to get the KL20 PWM lower half\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Register the PWM driver at "/dev/pwm2" */
|
||||
|
||||
ret = pwm_register("/dev/pwm2", pwm);
|
||||
if (ret < 0)
|
||||
{
|
||||
adbg("pwm_register failed: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Now we are initialized */
|
||||
#endif
|
||||
initialized = true;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_PWM */
|
||||
Reference in New Issue
Block a user