From d5a880807b47188aa5d721f4aff491bc46c6f186 Mon Sep 17 00:00:00 2001 From: flabbergast Date: Tue, 22 Mar 2016 17:51:46 +0000 Subject: [KINETIS] HAL cleanup/update. New entries in kinetis_registry.h to support new MCUs. Moved registers to ext/CMSIS, like it is done for STM32. Move the same drivers to LLD. Add USB driver. --- os/hal/ports/KINETIS/K20x/pwm_lld.h | 270 ++++++++++++++++++++++++++++++++++++ 1 file changed, 270 insertions(+) create mode 100644 os/hal/ports/KINETIS/K20x/pwm_lld.h (limited to 'os/hal/ports/KINETIS/K20x/pwm_lld.h') diff --git a/os/hal/ports/KINETIS/K20x/pwm_lld.h b/os/hal/ports/KINETIS/K20x/pwm_lld.h new file mode 100644 index 0000000..176e8a8 --- /dev/null +++ b/os/hal/ports/KINETIS/K20x/pwm_lld.h @@ -0,0 +1,270 @@ +/* + 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 K20x7/pwm_lld.h + * @brief KINETIS PWM subsystem low level driver header. + * + * @addtogroup PWM + * @{ + */ + +#ifndef _PWM_LLD_H_ +#define _PWM_LLD_H_ + +#if HAL_USE_PWM || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +/** + * @brief Number of PWM channels per PWM driver. + */ +#define PWM_CHANNELS 8 + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +#if !defined(KINETIS_PWM_USE_FTM0) + #define KINETIS_PWM_USE_FTM0 FALSE +#endif + +#if !defined(KINETIS_PWM_USE_FTM1) + #define KINETIS_PWM_USE_FTM1 FALSE +#endif + +#if !defined(KINETIS_PWM_USE_FTM2) + #define KINETIS_PWM_USE_FTM2 FALSE +#endif + +/** + * @brief FTM0 interrupt priority level setting. + */ +#if !defined(KINETIS_PWM_FTM0_PRIORITY) || defined(__DOXYGEN__) +#define KINETIS_PWM_FTM0_PRIORITY 12 +#endif + +/** + * @brief FTM1 interrupt priority level setting. + */ +#if !defined(KINETIS_PWM_FTM1_PRIORITY) || defined(__DOXYGEN__) +#define KINETIS_PWM_FTM1_PRIORITY 12 +#endif + +/** + * @brief FTM2 interrupt priority level setting. + */ +#if !defined(KINETIS_PWM_FTM2_PRIORITY) || defined(__DOXYGEN__) +#define KINETIS_PWM_FTM2_PRIORITY 12 +#endif + +/** @} */ + +/** + * @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_FTM0 && !KINETIS_PWM_USE_FTM1 && !KINETIS_PWM_USE_FTM2 +#error "PWM driver activated but no FTM 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 FTM registers block. + */ + FTM_TypeDef *ftm; +}; + +/*===========================================================================*/ +/* 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) \ + do { \ + (pwmp)->ftm->MOD = ((period) - 1); \ + pwmp->ftm->PWMLOAD = FTM_PWMLOAD_LDOK_MASK;\ + } while(0) + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +#if KINETIS_PWM_USE_FTM0 || defined(__DOXYGEN__) +extern PWMDriver PWMD1; +#endif +#if KINETIS_PWM_USE_FTM1 || defined(__DOXYGEN__) +extern PWMDriver PWMD2; +#endif +#if KINETIS_PWM_USE_FTM2 || 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_ */ + +/** @} */ -- cgit v1.2.3