mirror of
https://github.com/RT-Thread/rt-thread.git
synced 2026-10-07 00:59:00 +08:00
加入定时器设备
This commit is contained in:
heyuanjie87
@@ -0,0 +1,170 @@
|
||||
/*
|
||||
* File : gpio.c
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2015, RT-Thread Development Team
|
||||
*
|
||||
* The license and distribution terms for this file may be
|
||||
* found in the file LICENSE in this distribution or at
|
||||
* http://www.rt-thread.org/license/LICENSE
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
* 2015-09-02 heyuanjie87 the first version
|
||||
*/
|
||||
|
||||
#include <rtthread.h>
|
||||
#include <rtdevice.h>
|
||||
#include <board.h>
|
||||
#include "drv_hwtimer.h"
|
||||
|
||||
#ifdef RT_USING_HWTIMER
|
||||
|
||||
static void NVIC_Configuration(void)
|
||||
{
|
||||
NVIC_InitTypeDef NVIC_InitStructure;
|
||||
|
||||
/* Enable the TIM5 global Interrupt */
|
||||
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
|
||||
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;
|
||||
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;
|
||||
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
||||
NVIC_Init(&NVIC_InitStructure);
|
||||
}
|
||||
|
||||
static void timer_init(rt_hwtimer_t *timer)
|
||||
{
|
||||
TIM_TypeDef *tim;
|
||||
|
||||
tim = (TIM_TypeDef *)timer->parent.user_data;
|
||||
|
||||
TIM_DeInit(tim);
|
||||
NVIC_Configuration();
|
||||
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
|
||||
TIM_CounterModeConfig(tim, TIM_CounterMode_Up);
|
||||
}
|
||||
|
||||
static void timer_deinit(rt_hwtimer_t *timer)
|
||||
{
|
||||
TIM_TypeDef *tim;
|
||||
|
||||
tim = (TIM_TypeDef *)timer->parent.user_data;
|
||||
TIM_DeInit(tim);
|
||||
}
|
||||
|
||||
static void timer_start(rt_hwtimer_t *timer, rt_hwtimer_mode_t opmode)
|
||||
{
|
||||
TIM_TypeDef *tim;
|
||||
uint16_t m;
|
||||
|
||||
tim = (TIM_TypeDef *)timer->parent.user_data;
|
||||
m = (opmode == HWTIMER_MODE_ONESHOT)? TIM_OPMode_Single : TIM_OPMode_Repetitive;
|
||||
TIM_SelectOnePulseMode(tim, m);
|
||||
TIM_Cmd(tim, ENABLE);
|
||||
}
|
||||
|
||||
static void timer_stop(rt_hwtimer_t *timer)
|
||||
{
|
||||
TIM_TypeDef *tim;
|
||||
|
||||
tim = (TIM_TypeDef *)timer->parent.user_data;
|
||||
TIM_Cmd(tim, DISABLE);
|
||||
}
|
||||
|
||||
static rt_err_t timer_ctrl(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg)
|
||||
{
|
||||
TIM_TypeDef *tim;
|
||||
rt_err_t err = RT_EOK;
|
||||
|
||||
tim = (TIM_TypeDef *)timer->parent.user_data;
|
||||
|
||||
switch (cmd)
|
||||
{
|
||||
case HWTIMER_CTRL_FREQ_SET:
|
||||
{
|
||||
RCC_ClocksTypeDef clk;
|
||||
uint16_t val;
|
||||
rt_uint32_t freq;
|
||||
|
||||
RCC_GetClocksFreq(&clk);
|
||||
|
||||
freq = *((rt_uint32_t*)arg);
|
||||
clk.PCLK1_Frequency *= 2;
|
||||
val = clk.PCLK1_Frequency/freq;
|
||||
|
||||
TIM_ITConfig(tim, TIM_IT_Update, DISABLE);
|
||||
TIM_PrescalerConfig(tim, val - 1, TIM_PSCReloadMode_Immediate);
|
||||
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
|
||||
TIM_ITConfig(tim, TIM_IT_Update, ENABLE);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
{
|
||||
err = -RT_ENOSYS;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static rt_uint32_t timer_counter_get(rt_hwtimer_t *timer)
|
||||
{
|
||||
TIM_TypeDef *tim;
|
||||
|
||||
tim = (TIM_TypeDef *)timer->parent.user_data;
|
||||
|
||||
return TIM_GetCounter(tim);
|
||||
}
|
||||
|
||||
static rt_err_t timer_timeout_set(rt_hwtimer_t *timer, rt_uint32_t t)
|
||||
{
|
||||
TIM_TypeDef *tim;
|
||||
|
||||
tim = (TIM_TypeDef *)timer->parent.user_data;
|
||||
TIM_SetAutoreload(tim, t);
|
||||
|
||||
return RT_EOK;
|
||||
}
|
||||
|
||||
static const struct rt_hwtimer_info _info =
|
||||
{
|
||||
1000000, /* 可设置的最大计数时钟 */
|
||||
2000, /* 可设置的最小计数时钟 */
|
||||
0xFFFF, /* 最大超时值 */
|
||||
HWTIMER_CNTMODE_UP,/* 递增计数方式 */
|
||||
};
|
||||
|
||||
static const struct rt_hwtimer_ops _ops =
|
||||
{
|
||||
timer_init,
|
||||
timer_deinit,
|
||||
timer_start,
|
||||
timer_stop,
|
||||
timer_timeout_set,
|
||||
timer_counter_get,
|
||||
timer_ctrl,
|
||||
};
|
||||
|
||||
static rt_hwtimer_t _timer0;
|
||||
|
||||
int stm32_hwtimer_init(void)
|
||||
{
|
||||
_timer0.info = &_info;
|
||||
_timer0.ops = &_ops;
|
||||
|
||||
rt_device_hwtimer_register(&_timer0, "timer0", TIM2);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void TIM2_IRQHandler(void)
|
||||
{
|
||||
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
|
||||
{
|
||||
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
|
||||
rt_device_hwtimer_isr(&_timer0);
|
||||
}
|
||||
}
|
||||
|
||||
INIT_BOARD_EXPORT(stm32_hwtimer_init);
|
||||
#endif
|
||||
@@ -0,0 +1,8 @@
|
||||
#ifndef __DRV_HWTIMER_H__
|
||||
#define __DRV_HWTIMER_H__
|
||||
|
||||
|
||||
int stm32_hwtimer_init(void);
|
||||
|
||||
|
||||
#endif
|
||||
@@ -69,6 +69,9 @@
|
||||
/* Using GPIO pin framework */
|
||||
#define RT_USING_PIN
|
||||
|
||||
/* Using Hardware Timer framework */
|
||||
//#define RT_USING_HWTIMER
|
||||
|
||||
/* SECTION: Console options */
|
||||
#define RT_USING_CONSOLE
|
||||
/* the buffer size of console*/
|
||||
|
||||
@@ -0,0 +1,8 @@
|
||||
from building import *
|
||||
|
||||
cwd = GetCurrentDir()
|
||||
src = Glob('*.c')
|
||||
CPPPATH = [cwd + '/../include']
|
||||
group = DefineGroup('DeviceDrivers', src, depend = ['RT_USING_HWTIMER'], CPPPATH = CPPPATH)
|
||||
|
||||
Return('group')
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,83 @@
|
||||
#ifndef __HWTIMER_H__
|
||||
#define __HWTIMER_H__
|
||||
|
||||
#include <rtthread.h>
|
||||
#include <rtdevice.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/* 定时器控制命令 */
|
||||
typedef enum
|
||||
{
|
||||
HWTIMER_CTRL_TIMEOUT_SET = 0x01, /* 设置超时值 */
|
||||
HWTIMER_CTRL_FREQ_SET, /* 设置计数频率 */
|
||||
HWTIMER_CTRL_START, /* 启动定时器 */
|
||||
HWTIMER_CTRL_STOP, /* 停止定时器 */
|
||||
HWTIMER_CTRL_INFO_GET, /* 获取定时器特征信息 */
|
||||
HWTIMER_CTRL_MODE_SET /* 设置定时模式 */
|
||||
} rt_hwtimer_ctrl_t;
|
||||
|
||||
/* 定时模式 */
|
||||
typedef enum
|
||||
{
|
||||
HWTIMER_MODE_ONESHOT = 0x01,
|
||||
HWTIMER_MODE_PERIOD
|
||||
} rt_hwtimer_mode_t;
|
||||
|
||||
/* 定时器计数值 */
|
||||
typedef struct rt_hwtimerval
|
||||
{
|
||||
rt_int32_t sec; /* 秒 */
|
||||
rt_int32_t usec; /* 微秒 */
|
||||
} rt_hwtimerval_t;
|
||||
|
||||
#define HWTIMER_CNTMODE_UP 0x01 /* 定时器递增计数方式 */
|
||||
#define HWTIMER_CNTMODE_DW 0x02 /* 定时器递减计数方式 */
|
||||
|
||||
struct rt_hwtimer_device;
|
||||
|
||||
struct rt_hwtimer_ops
|
||||
{
|
||||
void (*init)(struct rt_hwtimer_device *timer);
|
||||
void (*deinit)(struct rt_hwtimer_device *timer);
|
||||
void (*start)(struct rt_hwtimer_device *timer, rt_hwtimer_mode_t mode);
|
||||
void (*stop)(struct rt_hwtimer_device *timer);
|
||||
rt_err_t (*timeout_set)(struct rt_hwtimer_device *timer, rt_uint32_t t);
|
||||
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);
|
||||
};
|
||||
|
||||
/* 定时器基本参数(不可动态更改) */
|
||||
struct rt_hwtimer_info
|
||||
{
|
||||
rt_int32_t maxfreq; /* 定时器支持的最大计数时钟 */
|
||||
rt_int32_t minfreq; /* 定时器支持的最小计数时钟 */
|
||||
rt_uint32_t maxcnt; /* 计数器最大超时值 */
|
||||
rt_uint8_t cntmode; /* 计数模式(递增/递减,应用层无需关心此参数) */
|
||||
};
|
||||
|
||||
typedef struct rt_hwtimer_device
|
||||
{
|
||||
struct rt_device parent;
|
||||
const struct rt_hwtimer_ops *ops;
|
||||
const struct rt_hwtimer_info *info;
|
||||
|
||||
/* 驱动层不用关心以下参数 */
|
||||
rt_int32_t freq; /* 计数频率 */
|
||||
rt_int32_t overflow; /* 溢出次数 */
|
||||
float period_sec; /* 溢出周期(s) */
|
||||
rt_int32_t cycles; /* 循环次数 */
|
||||
rt_int32_t reload; /* 重载cycles */
|
||||
rt_hwtimer_mode_t mode; /* 定时模式 */
|
||||
} 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
|
||||
@@ -370,6 +370,10 @@ rt_inline void rt_work_init(struct rt_work* work, void (*work_func)(struct rt_wo
|
||||
#include "drivers/can.h"
|
||||
#endif
|
||||
|
||||
#ifdef RT_USING_HWTIMER
|
||||
#include "drivers/hwtimer.h"
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
@@ -468,6 +468,7 @@ static long _list_device(struct rt_list_node *list)
|
||||
"Pipe",
|
||||
"Portal Device",
|
||||
"Miscellaneous Device",
|
||||
"Hardware Timer Device",
|
||||
"Unknown"
|
||||
};
|
||||
|
||||
|
||||
+2
-1
@@ -759,7 +759,8 @@ enum rt_device_class_type
|
||||
RT_Device_Class_Pipe, /**< Pipe device */
|
||||
RT_Device_Class_Portal, /**< Portal device */
|
||||
RT_Device_Class_Miscellaneous, /**< Miscellaneous device */
|
||||
RT_Device_Class_Unknown /**< unknown device */
|
||||
RT_Device_Class_HwTimer, /**< Hardware timer device */
|
||||
RT_Device_Class_Unknown /**< unknown device */
|
||||
};
|
||||
|
||||
/**
|
||||
|
||||
Reference in New Issue
Block a user