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/************************************************************************************
* arch/arm/src/stm32/stm32_pwm.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_STM32_STM32_TIM_H
#define __ARCH_ARM_SRC_STM32_STM32_TIM_H
/* The STM32 does not have dedicated PWM hardware. Rather, pulsed output control
* is a capabilitiy of the STM32 timers. The logic in this file implements the
* lower half of the standard, NuttX PWM interface using the STM32 timers. That
* interface is described in include/nuttx/pwm.h.
*/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "chip/stm32_tim.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Configuration ********************************************************************/
/* Timer devices may be used for different purposes. One special purpose is
* to generate modulated outputs for such things as motor control. If CONFIG_STM32_TIMn
* is defined then the CONFIG_STM32_TIMn_PWM must also be defined to indicate that
* timer "n" is intended to be used for pulsed output signal generation.
*/
#ifndef CONFIG_STM32_TIM1
# undef CONFIG_STM32_TIM1_PWM
#endif
#ifndef CONFIG_STM32_TIM2
# undef CONFIG_STM32_TIM2_PWM
#endif
#ifndef CONFIG_STM32_TIM3
# undef CONFIG_STM32_TIM3_PWM
#endif
#ifndef CONFIG_STM32_TIM4
# undef CONFIG_STM32_TIM4_PWM
#endif
#ifndef CONFIG_STM32_TIM5
# undef CONFIG_STM32_TIM5_PWM
#endif
#ifndef CONFIG_STM32_TIM6
# undef CONFIG_STM32_TIM6_PWM
#endif
#ifndef CONFIG_STM32_TIM7
# undef CONFIG_STM32_TIM7_PWM
#endif
#ifndef CONFIG_STM32_TIM8
# undef CONFIG_STM32_TIM8_PWM
#endif
#ifndef CONFIG_STM32_TIM9
# undef CONFIG_STM32_TIM9_PWM
#endif
#ifndef CONFIG_STM32_TIM10
# undef CONFIG_STM32_TIM10_PWM
#endif
#ifndef CONFIG_STM32_TIM11
# undef CONFIG_STM32_TIM11_PWM
#endif
#ifndef CONFIG_STM32_TIM12
# undef CONFIG_STM32_TIM12_PWM
#endif
#ifndef CONFIG_STM32_TIM13
# undef CONFIG_STM32_TIM13_PWM
#endif
#ifndef CONFIG_STM32_TIM14
# undef CONFIG_STM32_TIM14_PWM
#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: stm32_pwminitialize
*
* Description:
* Initialize one timer for use with the upper_level PWM driver.
*
* Input Parameters:
* timer - A number identifying the timer use. The number of valid timer
* IDs varies with the STM32 MCU and MCU family but is somewhere in
* the range of {1,..,14}.
*
* Returned Value:
* On success, a pointer to the STM32 lower half PWM driver is returned.
* NULL is returned on any failure.
*
************************************************************************************/
EXTERN FAR struct pwm_lowerhalf_s *stm32_pwminitialize(int timer);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_STM32_STM32_TIM_H */
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