From b03d1197ae95ef880475e7e4f98e1b8a78340a66 Mon Sep 17 00:00:00 2001 From: patacongo Date: Fri, 16 Dec 2011 19:29:41 +0000 Subject: Add framework for lower half STM32 PWM driver; updates to the STM32 ADC driver git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4192 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/arch/arm/src/stm32/stm32_pwm.h | 154 +++++++++++++++++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 nuttx/arch/arm/src/stm32/stm32_pwm.h (limited to 'nuttx/arch/arm/src/stm32/stm32_pwm.h') diff --git a/nuttx/arch/arm/src/stm32/stm32_pwm.h b/nuttx/arch/arm/src/stm32/stm32_pwm.h new file mode 100644 index 000000000..6204cda21 --- /dev/null +++ b/nuttx/arch/arm/src/stm32/stm32_pwm.h @@ -0,0 +1,154 @@ +/************************************************************************************ + * arch/arm/src/stm32/stm32_pwm.h + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 + +#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 */ -- cgit v1.2.3