diff options
Diffstat (limited to 'watch-library/hal/include/hal_pwm.h')
| -rw-r--r-- | watch-library/hal/include/hal_pwm.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/watch-library/hal/include/hal_pwm.h b/watch-library/hal/include/hal_pwm.h new file mode 100644 index 00000000..d55f7e68 --- /dev/null +++ b/watch-library/hal/include/hal_pwm.h @@ -0,0 +1,153 @@ +/** + * \file + * + * \brief PWM functionality declaration. + * + * Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries. + * + * \asf_license_start + * + * \page License + * + * Subject to your compliance with these terms, you may use Microchip + * software and any derivatives exclusively with Microchip products. + * It is your responsibility to comply with third party license terms applicable + * to your use of third party software (including open source software) that + * may accompany Microchip software. + * + * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, + * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, + * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, + * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE + * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL + * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE + * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE + * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT + * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY + * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, + * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. + * + * \asf_license_stop + * + */ + +#ifndef HAL_PWM_H_INCLUDED +#define HAL_PWM_H_INCLUDED + +#include <hpl_pwm.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \addtogroup doc_driver_hal_pwm_async + * + *@{ + */ + +/** + * \brief PWM descriptor + * + * The PWM descriptor forward declaration. + */ +struct pwm_descriptor; + +/** + * \brief PWM callback type + */ +typedef void (*pwm_cb_t)(const struct pwm_descriptor *const descr); + +/** + * \brief PWM callback types + */ +enum pwm_callback_type { PWM_PERIOD_CB, PWM_ERROR_CB }; + +/** + * \brief PWM callbacks + */ +struct pwm_callbacks { + pwm_cb_t period; + pwm_cb_t error; +}; + +/** \brief PWM descriptor + */ +struct pwm_descriptor { + /** PWM device */ + struct _pwm_device device; + /** PWM callback structure */ + struct pwm_callbacks pwm_cb; + /** PWM HPL interface pointer */ + struct _pwm_hpl_interface *func; +}; + +/** \brief Initialize the PWM HAL instance and hardware + * + * \param[in] descr Pointer to the HAL PWM descriptor + * \param[in] hw The pointer to hardware instance + * \param[in] func The pointer to a set of functions pointers + * + * \return Operation status. + */ +int32_t pwm_init(struct pwm_descriptor *const descr, void *const hw, struct _pwm_hpl_interface *const func); + +/** \brief Deinitialize the PWM HAL instance and hardware + * + * \param[in] descr Pointer to the HAL PWM descriptor + * + * \return Operation status. + */ +int32_t pwm_deinit(struct pwm_descriptor *const descr); + +/** \brief PWM output start + * + * \param[in] descr Pointer to the HAL PWM descriptor + * + * \return Operation status. + */ +int32_t pwm_enable(struct pwm_descriptor *const descr); + +/** \brief PWM output stop + * + * \param[in] descr Pointer to the HAL PWM descriptor + * + * \return Operation status. + */ +int32_t pwm_disable(struct pwm_descriptor *const descr); + +/** \brief Register PWM callback + * + * \param[in] descr Pointer to the HAL PWM descriptor + * \param[in] type Callback type + * \param[in] cb A callback function, passing NULL de-registers callback + * + * \return Operation status. + * \retval 0 Success + * \retval -1 Error + */ +int32_t pwm_register_callback(struct pwm_descriptor *const descr, enum pwm_callback_type type, pwm_cb_t cb); + +/** \brief Change PWM parameter + * + * \param[in] descr Pointer to the HAL PWM descriptor + * \param[in] period Total period of one PWM cycle + * \param[in] duty_cycle Period of PWM first half during one cycle + * + * \return Operation status. + */ +int32_t pwm_set_parameters(struct pwm_descriptor *const descr, const pwm_period_t period, + const pwm_period_t duty_cycle); + +/** \brief Get PWM driver version + * + * \return Current driver version. + */ +uint32_t pwm_get_version(void); +/**@}*/ + +#ifdef __cplusplus +} +#endif + +#endif /* HAL_PWM;_H_INCLUDED */ |