pwm.h
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1 /*
2  * Copyright (C) 2021 Alibaba Group Holding Limited
3  */
4 
5 #ifndef _AOS_PWM_H
6 #define _AOS_PWM_H
7 
8 #include <stdint.h>
9 #include <aos/kernel.h>
10 #include <aos/device.h>
11 
20 #ifdef __cplusplus
21 extern "C" {
22 #endif
23 
24 typedef enum {
25  AOS_PWM_POLARITY_NORMAL,
26  AOS_PWM_POLARITY_INVERSE,
27 } aos_pwm_polarity_t;
28 
29 typedef struct {
30  uint32_t period; /*in ns*/
31  uint32_t duty_cycle; /*in ns*/
32  aos_pwm_polarity_t polarity;
33  bool enabled;
34 } aos_pwm_attr_t;
43 typedef aos_dev_ref_t aos_pwm_ref_t;
53 aos_status_t aos_pwm_get(aos_pwm_ref_t *ref, uint32_t id);
54 
62 void aos_pwm_put(aos_pwm_ref_t *ref);
63 
72 aos_status_t aos_pwm_set_attr(aos_pwm_ref_t *ref, aos_pwm_attr_t const *attr);
73 
82 aos_status_t aos_pwm_get_attr(aos_pwm_ref_t *ref, aos_pwm_attr_t *attr);
83 
84 #ifdef __cplusplus
85 }
86 #endif
87 
90 #endif /* _AOS_PWM_H */
aos_status_t
int32_t aos_status_t
Definition: kernel.h:185
aos_pwm_attr_t::duty_cycle
uint32_t duty_cycle
Definition: pwm.h:31
aos_pwm_put
void aos_pwm_put(aos_pwm_ref_t *ref)
aos_pwm_attr_t::polarity
aos_pwm_polarity_t polarity
Definition: pwm.h:32
aos_pwm_attr_t::period
uint32_t period
Definition: pwm.h:30
aos_pwm_set_attr
aos_status_t aos_pwm_set_attr(aos_pwm_ref_t *ref, aos_pwm_attr_t const *attr)
aos_pwm_attr_t::enabled
bool enabled
Definition: pwm.h:33
aos_pwm_get
aos_status_t aos_pwm_get(aos_pwm_ref_t *ref, uint32_t id)
aos_pwm_get_attr
aos_status_t aos_pwm_get_attr(aos_pwm_ref_t *ref, aos_pwm_attr_t *attr)
aos_pwm_polarity_t
aos_pwm_polarity_t
Definition: pwm.h:24
aos_pwm_ref_t
aos_dev_ref_t aos_pwm_ref_t
Definition: pwm.h:43
AOS_PWM_POLARITY_NORMAL
@ AOS_PWM_POLARITY_NORMAL
Definition: pwm.h:25
AOS_PWM_POLARITY_INVERSE
@ AOS_PWM_POLARITY_INVERSE
Definition: pwm.h:26
aos_pwm_attr_t
Definition: pwm.h:29