244 lines
7.4 KiB
C
244 lines
7.4 KiB
C
|
/*
|
||
|
|
ChibiOS/HAL - Copyright (C) 2014 Adam J. Porter
|
||
|
|
|
||
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
you may not use this file except in compliance with the License.
|
||
|
|
You may obtain a copy of the License at
|
||
|
|
|
||
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
|
||
|
|
Unless required by applicable law or agreed to in writing, software
|
||
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
See the License for the specific language governing permissions and
|
||
|
|
limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file KL2x/pwm_lld.h
|
||
|
|
* @brief KINETIS PWM subsystem low level driver header.
|
||
|
|
*
|
||
|
|
* @addtogroup PWM
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _PWM_LLD_H_
|
||
|
|
#define _PWM_LLD_H_
|
||
|
|
|
||
|
|
#include "kinetis_tpm.h"
|
||
|
|
|
||
|
|
#if HAL_USE_PWM || defined(__DOXYGEN__)
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Driver constants. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
#if !defined(KINETIS_PWM_USE_TPM0)
|
||
|
|
#define KINETIS_PWM_USE_TPM0 FALSE
|
||
|
|
#endif
|
||
|
|
#if !defined(KINETIS_PWM_USE_TPM1)
|
||
|
|
#define KINETIS_PWM_USE_TPM1 FALSE
|
||
|
|
#endif
|
||
|
|
#if !defined(KINETIS_PWM_USE_TPM2)
|
||
|
|
#define KINETIS_PWM_USE_TPM2 FALSE
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Number of PWM channels per PWM driver.
|
||
|
|
*/
|
||
|
|
#define PWM_CHANNELS 6
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Driver pre-compile time settings. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @name Configuration options
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @brief If advanced timer features switch.
|
||
|
|
* @details If set to @p TRUE the advanced features for TIM1 and TIM8 are
|
||
|
|
* enabled.
|
||
|
|
* @note The default is @p TRUE.
|
||
|
|
*/
|
||
|
|
#if !defined(KINETIS_PWM_USE_ADVANCED) || defined(__DOXYGEN__)
|
||
|
|
#define KINETIS_PWM_USE_ADVANCED FALSE
|
||
|
|
#endif
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Configuration checks. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
#if !KINETIS_PWM_USE_TPM0 && !KINETIS_PWM_USE_TPM1 && !KINETIS_PWM_USE_TPM2
|
||
|
|
#error "PWM driver activated but no TPM peripheral assigned"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Driver data structures and types. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Type of a PWM mode.
|
||
|
|
*/
|
||
|
|
typedef uint32_t pwmmode_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Type of a PWM channel.
|
||
|
|
*/
|
||
|
|
typedef uint8_t pwmchannel_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Type of a channels mask.
|
||
|
|
*/
|
||
|
|
typedef uint32_t pwmchnmsk_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Type of a PWM counter.
|
||
|
|
*/
|
||
|
|
typedef uint16_t pwmcnt_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Type of a PWM driver channel configuration structure.
|
||
|
|
*/
|
||
|
|
typedef struct {
|
||
|
|
/**
|
||
|
|
* @brief Channel active logic level.
|
||
|
|
*/
|
||
|
|
pwmmode_t mode;
|
||
|
|
/**
|
||
|
|
* @brief Channel callback pointer.
|
||
|
|
* @note This callback is invoked on the channel compare event. If set to
|
||
|
|
* @p NULL then the callback is disabled.
|
||
|
|
*/
|
||
|
|
pwmcallback_t callback;
|
||
|
|
/* End of the mandatory fields.*/
|
||
|
|
} PWMChannelConfig;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Type of a PWM driver configuration structure.
|
||
|
|
*/
|
||
|
|
typedef struct {
|
||
|
|
/**
|
||
|
|
* @brief Timer clock in Hz.
|
||
|
|
* @note The low level can use assertions in order to catch invalid
|
||
|
|
* frequency specifications.
|
||
|
|
*/
|
||
|
|
uint32_t frequency;
|
||
|
|
/**
|
||
|
|
* @brief PWM period in ticks.
|
||
|
|
* @note The low level can use assertions in order to catch invalid
|
||
|
|
* period specifications.
|
||
|
|
*/
|
||
|
|
pwmcnt_t period;
|
||
|
|
/**
|
||
|
|
* @brief Periodic callback pointer.
|
||
|
|
* @note This callback is invoked on PWM counter reset. If set to
|
||
|
|
* @p NULL then the callback is disabled.
|
||
|
|
*/
|
||
|
|
pwmcallback_t callback;
|
||
|
|
/**
|
||
|
|
* @brief Channels configurations.
|
||
|
|
*/
|
||
|
|
PWMChannelConfig channels[PWM_CHANNELS];
|
||
|
|
/* End of the mandatory fields.*/
|
||
|
|
} PWMConfig;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Structure representing a PWM driver.
|
||
|
|
*/
|
||
|
|
struct PWMDriver {
|
||
|
|
/**
|
||
|
|
* @brief Driver state.
|
||
|
|
*/
|
||
|
|
pwmstate_t state;
|
||
|
|
/**
|
||
|
|
* @brief Current driver configuration data.
|
||
|
|
*/
|
||
|
|
const PWMConfig *config;
|
||
|
|
/**
|
||
|
|
* @brief Current PWM period in ticks.
|
||
|
|
*/
|
||
|
|
pwmcnt_t period;
|
||
|
|
/**
|
||
|
|
* @brief Mask of the enabled channels.
|
||
|
|
*/
|
||
|
|
pwmchnmsk_t enabled;
|
||
|
|
/**
|
||
|
|
* @brief Number of channels in this instance.
|
||
|
|
*/
|
||
|
|
pwmchannel_t channels;
|
||
|
|
#if defined(PWM_DRIVER_EXT_FIELDS)
|
||
|
|
PWM_DRIVER_EXT_FIELDS
|
||
|
|
#endif
|
||
|
|
/* End of the mandatory fields.*/
|
||
|
|
/**
|
||
|
|
* @brief Pointer to the TPM registers block.
|
||
|
|
*/
|
||
|
|
TPM_TypeDef *tpm;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* Driver macros. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Changes the period the PWM peripheral.
|
||
|
|
* @details This function changes the period of a PWM unit that has already
|
||
|
|
* been activated using @p pwmStart().
|
||
|
|
* @pre The PWM unit must have been activated using @p pwmStart().
|
||
|
|
* @post The PWM unit period is changed to the new value.
|
||
|
|
* @note The function has effect at the next cycle start.
|
||
|
|
* @note If a period is specified that is shorter than the pulse width
|
||
|
|
* programmed in one of the channels then the behavior is not
|
||
|
|
* guaranteed.
|
||
|
|
*
|
||
|
|
* @param[in] pwmp pointer to a @p PWMDriver object
|
||
|
|
* @param[in] period new cycle time in ticks
|
||
|
|
*
|
||
|
|
* @notapi
|
||
|
|
*/
|
||
|
|
#define pwm_lld_change_period(pwmp, period) \
|
||
|
|
((pwmp)->tpm->MOD = ((period) - 1))
|
||
|
|
|
||
|
|
/*===========================================================================*/
|
||
|
|
/* External declarations. */
|
||
|
|
/*===========================================================================*/
|
||
|
|
|
||
|
|
#if KINETIS_PWM_USE_TPM0 || defined(__DOXYGEN__)
|
||
|
|
extern PWMDriver PWMD1;
|
||
|
|
#endif
|
||
|
|
#if KINETIS_PWM_USE_TPM1 || defined(__DOXYGEN__)
|
||
|
|
extern PWMDriver PWMD2;
|
||
|
|
#endif
|
||
|
|
#if KINETIS_PWM_USE_TPM2 || defined(__DOXYGEN__)
|
||
|
|
extern PWMDriver PWMD3;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
void pwm_lld_init(void);
|
||
|
|
void pwm_lld_start(PWMDriver *pwmp);
|
||
|
|
void pwm_lld_stop(PWMDriver *pwmp);
|
||
|
|
void pwm_lld_enable_channel(PWMDriver *pwmp,
|
||
|
|
pwmchannel_t channel,
|
||
|
|
pwmcnt_t width);
|
||
|
|
void pwm_lld_disable_channel(PWMDriver *pwmp, pwmchannel_t channel);
|
||
|
|
void pwm_lld_enable_periodic_notification(PWMDriver *pwmp);
|
||
|
|
void pwm_lld_disable_periodic_notification(PWMDriver *pwmp);
|
||
|
|
void pwm_lld_enable_channel_notification(PWMDriver *pwmp,
|
||
|
|
pwmchannel_t channel);
|
||
|
|
void pwm_lld_disable_channel_notification(PWMDriver *pwmp,
|
||
|
|
pwmchannel_t channel);
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* HAL_USE_PWM */
|
||
|
|
|
||
|
|
#endif /* _PWM_LLD_H_ */
|
||
|
|
|
||
|
|
/** @} */
|