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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file pwm.h
* @brief PWM Driver macros and structures.
* @addtogroup PWM
* @{
*/
#ifndef _PWM_H_
#define _PWM_H_
#if CH_HAL_USEPWM || defined(__DOXYGEN__)
/**
* @brief Driver state machine possible states.
*/
typedef enum {
PWM_UNINIT = 0, /**< @brief Not initialized. */
PWM_STOP = 1, /**< @brief Stopped. */
PWM_READY = 2, /**< @brief Ready. */
} pwmstate_t;
/**
* @brief PWM edge for callbacks.
*/
typedef enum {
PWM_NONE = 0, /**< @brief No callback. */
PWM_TO_ACTIVE_EDGE = 1, /**< @brief Enable on idle->active. */
PWM_TO_IDLE_EDGE = 2, /**< @brief Enable on active->idle. */
PWM_BOTH_EDGES = 3 /**< @brief Enable on both edges. */
} pwmedge_t;
/**
* @brief PWM logic mode.
*/
typedef enum {
PWM_ACTIVE_LOW = 0, /**< @brief Idle is logic level 1. */
PWM_ACTIVE_HIGH = 1 /**< @brief Idle is logic level 0. */
} pwmmode_t;
/**
* @brief PWM notification callback type.
*
* @param[in] active current channel output state
*/
typedef void (*pwmcallback_t)(bool_t active);
#include "pwm_lld.h"
#ifdef __cplusplus
extern "C" {
#endif
void pwmInit(void);
void pwmObjectInit(PWMDriver *pwmp);
void pwmStart(PWMDriver *pwmp, const PWMConfig *config);
void pwmStop(PWMDriver *pwmp);
void pwmSetCallback(PWMDriver *pwmp,
pwmchannel_t channel,
pwmedge_t edge,
pwmcallback_t callback);
void pwmEnableChannel(PWMDriver *pwmp,
pwmchannel_t channel,
pwmcnt_t width);
void pwmDisableChannel(PWMDriver *pwmp, pwmchannel_t channel);
#ifdef __cplusplus
}
#endif
#endif /* CH_HAL_USEPWM */
#endif /* _PWM_H_ */
/** @} */
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