mirror of
https://github.com/pine64/bl_iot_sdk.git
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135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/*
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* Copyright (c) 2020 Bouffalolab.
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*
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* This file is part of
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* *** Bouffalolab Software Dev Kit ***
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* (see www.bouffalolab.com).
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of Bouffalo Lab nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __HAL_PWM_H__
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#define __HAL_PWM_H__
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#include <stdint.h>
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#include <utils_list.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void (*hal_pwm_cb_t) (void *p_arg);
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typedef struct {
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struct utils_list_hdr item;
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float duty;
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float adjust_duty;
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uint32_t remain_ms;
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hal_pwm_cb_t cb;
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void *p_arg;
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} hal_pwm_ev_t;
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typedef struct {
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struct utils_list list_head;
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uint8_t active;
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uint32_t freq;
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float now_duty;
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hal_pwm_ev_t *p_now_ev;
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} hal_pwm_dev_t;
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/**
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* Initialises a PWM pin
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*
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* @param[in] id the PWM chan id
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* @param[in] pin the PWM pin
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*
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* @return 0 : on success, EIO : if an error occurred with any step
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*/
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int hal_pwm_init(uint8_t id, int pin);
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/**
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* update PWM frequency
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*
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* @param[in] id the PWM chan id
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* @param[in] freq the PWM frequency (611~400KHZ)
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*
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* @return 0 : on success, EIO : if an error occurred with any step
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*/
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int hal_pwm_freq_update(uint8_t id, uint32_t freq);
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/**
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* get PWM frequency
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*
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* @param[in] id the PWM chan id
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* @param[out] p_freq the pointer to memory frequency
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*
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* @return 0 : on success, EIO : if an error occurred with any step
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*/
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int hal_pwm_freq_get(uint8_t id, uint32_t *p_freq);
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/**
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* set PWM duty
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*
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* @param[in] id the PWM chan id
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* @param[in] duty the PWM duty (original duty * 100)
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* @param[in] duration_ms time (ms) to adjust duty cycle
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*
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* @return 0 : on success, EIO : if an error occurred with any step
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*/
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int hal_pwm_duty_set(uint8_t id, uint32_t duty, uint32_t duration_ms);
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/**
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* get PWM duty
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*
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* @param[in] id the PWM chan id
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* @param[out] p_duty the pointer to memory duty(original duty * 100)
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*
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* @return 0 : on success, EIO : if an error occurred with any step
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*/
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int hal_pwm_duty_get(uint8_t id, uint32_t *p_duty);
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/**
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* stop PWM
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*
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* @param[in] id the PWM chan id
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*
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* @return 0 : on success, EIO : if an error occurred with any step
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*/
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int hal_pwm_stop(uint8_t id);
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/**
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* start PWM
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*
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* @param[in] id the PWM chan id
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*
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* @return 0 : on success, EIO : if an error occurred with any step
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*/
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int hal_pwm_start(uint8_t id);
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int32_t vfs_pwm_init(uint32_t fdt, uint32_t dtb_uart_offset);
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#ifdef __cplusplus
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}
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#endif
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#endif
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