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/*
* Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-3-19 wangyq the first version
* 2019-11-01 wangyq update libraries
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <drv_hwtimer.h>
#include <board.h>
#include <ald_cmu.h>
#include <ald_timer.h>
#ifdef RT_USING_HWTIMER
struct es32f3_hwtimer_dev
{
rt_hwtimer_t parent;
timer_handle_t *hwtimer_periph;
IRQn_Type IRQn;
};
#ifdef BSP_USING_HWTIMER0
static struct es32f3_hwtimer_dev hwtimer0;
void BS16T0_Handler(void)
{
ald_timer_clear_flag_status(hwtimer0.hwtimer_periph, TIMER_FLAG_UPDATE);
rt_device_hwtimer_isr(&hwtimer0.parent);
if (HWTIMER_MODE_ONESHOT == hwtimer0.parent.mode)
{
ald_timer_base_stop(hwtimer0.hwtimer_periph);
}
}
#endif
#ifdef BSP_USING_HWTIMER1
static struct es32f3_hwtimer_dev hwtimer1;
/* can not use when UART2 Handler is enabled */
void BS16T1_Handler(void)
{
/* if BS16T1 it */
if (ald_timer_get_it_status(hwtimer1.hwtimer_periph, TIMER_IT_UPDATE) &&
ald_timer_get_flag_status(hwtimer1.hwtimer_periph, TIMER_FLAG_UPDATE))
{
ald_timer_clear_flag_status(hwtimer1.hwtimer_periph, TIMER_FLAG_UPDATE);
rt_device_hwtimer_isr(&hwtimer1.parent);
if (HWTIMER_MODE_ONESHOT == hwtimer1.parent.mode)
{
ald_timer_base_stop(hwtimer1.hwtimer_periph);
}
}
}
#endif
static struct rt_hwtimer_info es32f3_hwtimer_info =
{
96000000, /* maximum count frequency */
1, /* minimum count frequency */
65535, /* counter maximum value */
HWTIMER_CNTMODE_UP
};
static void es32f3_hwtimer_init(rt_hwtimer_t *timer, rt_uint32_t state)
{
struct es32f3_hwtimer_dev *hwtimer = (struct es32f3_hwtimer_dev *)timer->parent.user_data;
RT_ASSERT(hwtimer != RT_NULL);
if (1 == state)
{
ald_timer_base_init(hwtimer->hwtimer_periph);
ald_timer_interrupt_config(hwtimer->hwtimer_periph, TIMER_IT_UPDATE, ENABLE);
NVIC_EnableIRQ(hwtimer->IRQn);
}
hwtimer->parent.freq = ald_cmu_get_pclk1_clock();
es32f3_hwtimer_info.maxfreq = ald_cmu_get_pclk1_clock();
es32f3_hwtimer_info.minfreq = ald_cmu_get_pclk1_clock();
}
static rt_err_t es32f3_hwtimer_start(rt_hwtimer_t *timer,
rt_uint32_t cnt,
rt_hwtimer_mode_t mode)
{
struct es32f3_hwtimer_dev *hwtimer = (struct es32f3_hwtimer_dev *)timer->parent.user_data;
RT_ASSERT(hwtimer != RT_NULL);
WRITE_REG(hwtimer->hwtimer_periph->perh->AR, cnt);
ald_timer_base_start(hwtimer->hwtimer_periph);
return RT_EOK;
}
static void es32f3_hwtimer_stop(rt_hwtimer_t *timer)
{
struct es32f3_hwtimer_dev *hwtimer = (struct es32f3_hwtimer_dev *)timer->parent.user_data;
RT_ASSERT(hwtimer != RT_NULL);
ald_timer_base_stop(hwtimer->hwtimer_periph);
}
static rt_uint32_t es32f3_hwtimer_count_get(rt_hwtimer_t *timer)
{
struct es32f3_hwtimer_dev *hwtimer = (struct es32f3_hwtimer_dev *)timer->parent.user_data;
uint32_t hwtimer_count = 0;
RT_ASSERT(hwtimer != RT_NULL);
hwtimer_count = READ_REG(hwtimer->hwtimer_periph->perh->COUNT);
return hwtimer_count;
}
static rt_err_t es32f3_hwtimer_control(rt_hwtimer_t *timer,
rt_uint32_t cmd,
void *args)
{
rt_err_t ret = RT_EOK;
rt_uint32_t freq = 0;
struct es32f3_hwtimer_dev *hwtimer = (struct es32f3_hwtimer_dev *)timer->parent.user_data;
RT_ASSERT(hwtimer != RT_NULL);
switch (cmd)
{
case HWTIMER_CTRL_FREQ_SET:
freq = *(rt_uint32_t *)args;
if (freq != ald_cmu_get_pclk1_clock())
{
ret = -RT_ERROR;
}
break;
case HWTIMER_CTRL_STOP:
ald_timer_base_stop(hwtimer->hwtimer_periph);
break;
default:
ret = RT_EINVAL;
break;
}
return ret;
}
static struct rt_hwtimer_ops es32f3_hwtimer_ops =
{
es32f3_hwtimer_init,
es32f3_hwtimer_start,
es32f3_hwtimer_stop,
es32f3_hwtimer_count_get,
es32f3_hwtimer_control
};
int rt_hw_hwtimer_init(void)
{
rt_err_t ret = RT_EOK;
#ifdef BSP_USING_HWTIMER0
static timer_handle_t _hwtimer_periph0;
_hwtimer_periph0.perh = BS16T0;
hwtimer0.IRQn = BS16T0_IRQn;
hwtimer0.hwtimer_periph = &_hwtimer_periph0;
hwtimer0.parent.info = &es32f3_hwtimer_info;
hwtimer0.parent.ops = &es32f3_hwtimer_ops;
ret = rt_device_hwtimer_register(&hwtimer0.parent, "timer0", &hwtimer0);
#endif
#ifdef BSP_USING_HWTIMER1
static timer_handle_t _hwtimer_periph1;
_hwtimer_periph1.perh = BS16T1;
hwtimer1.IRQn = BS16T1_IRQn;
hwtimer1.hwtimer_periph = &_hwtimer_periph1;
hwtimer1.parent.info = &es32f3_hwtimer_info;
hwtimer1.parent.ops = &es32f3_hwtimer_ops;
ret = rt_device_hwtimer_register(&hwtimer1.parent, "timer1", &hwtimer1);
#endif
return ret;
}
INIT_BOARD_EXPORT(rt_hw_hwtimer_init);
#endif
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