86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2006-2023, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
*/
|
|
#ifndef __HWTIMER_H__
|
|
#define __HWTIMER_H__
|
|
|
|
#include <rtthread.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Timer Control Command */
|
|
typedef enum
|
|
{
|
|
HWTIMER_CTRL_FREQ_SET = RT_DEVICE_CTRL_BASE(Timer) + 0x01, /* set the count frequency */
|
|
HWTIMER_CTRL_STOP = RT_DEVICE_CTRL_BASE(Timer) + 0x02, /* stop timer */
|
|
HWTIMER_CTRL_INFO_GET = RT_DEVICE_CTRL_BASE(Timer) + 0x03, /* get a timer feature information */
|
|
HWTIMER_CTRL_MODE_SET = RT_DEVICE_CTRL_BASE(Timer) + 0x04 /* Setting the timing mode(oneshot/period) */
|
|
} rt_hwtimer_ctrl_t;
|
|
|
|
/* Timing Mode */
|
|
typedef enum
|
|
{
|
|
HWTIMER_MODE_ONESHOT = 0x01,
|
|
HWTIMER_MODE_PERIOD
|
|
} rt_hwtimer_mode_t;
|
|
|
|
/* Time Value */
|
|
typedef struct rt_hwtimerval
|
|
{
|
|
rt_int32_t sec; /* second */
|
|
rt_int32_t usec; /* microsecond */
|
|
} rt_hwtimerval_t;
|
|
|
|
#define HWTIMER_CNTMODE_UP 0x01 /* increment count mode */
|
|
#define HWTIMER_CNTMODE_DW 0x02 /* decreasing count mode */
|
|
|
|
struct rt_hwtimer_device;
|
|
|
|
struct rt_hwtimer_ops
|
|
{
|
|
void (*init)(struct rt_hwtimer_device *timer, rt_uint32_t state);
|
|
rt_err_t (*start)(struct rt_hwtimer_device *timer, rt_uint32_t cnt, rt_hwtimer_mode_t mode);
|
|
void (*stop)(struct rt_hwtimer_device *timer);
|
|
rt_uint32_t (*count_get)(struct rt_hwtimer_device *timer);
|
|
rt_err_t (*control)(struct rt_hwtimer_device *timer, rt_uint32_t cmd, void *args);
|
|
};
|
|
|
|
/* Timer Feature Information */
|
|
struct rt_hwtimer_info
|
|
{
|
|
rt_int32_t maxfreq; /* the maximum count frequency timer support */
|
|
rt_int32_t minfreq; /* the minimum count frequency timer support */
|
|
rt_uint32_t maxcnt; /* counter maximum value */
|
|
rt_uint8_t cntmode; /* count mode (inc/dec) */
|
|
};
|
|
|
|
typedef struct rt_hwtimer_device
|
|
{
|
|
struct rt_device parent;
|
|
const struct rt_hwtimer_ops *ops;
|
|
const struct rt_hwtimer_info *info;
|
|
|
|
rt_int32_t freq; /* counting frequency set by the user */
|
|
rt_int32_t overflow; /* timer overflows */
|
|
float period_sec;
|
|
rt_int32_t cycles; /* how many times will generate a timeout event after overflow */
|
|
rt_int32_t reload; /* reload cycles(using in period mode) */
|
|
rt_hwtimer_mode_t mode; /* timing mode(oneshot/period) */
|
|
} rt_hwtimer_t;
|
|
|
|
rt_err_t rt_device_hwtimer_register(rt_hwtimer_t *timer, const char *name, void *user_data);
|
|
void rt_device_hwtimer_isr(rt_hwtimer_t *timer);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|