284 lines
7.0 KiB
C
284 lines
7.0 KiB
C
|
/**************************************************************************//**
|
||
|
|
*
|
||
|
|
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2020-12-3 Wayne First version
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
#include <rtconfig.h>
|
||
|
|
|
||
|
|
#if defined(BSP_USING_ETIMER) && defined(RT_USING_HWTIMER)
|
||
|
|
|
||
|
|
#include <rtdevice.h>
|
||
|
|
#include "NuMicro.h"
|
||
|
|
#include <drv_sys.h>
|
||
|
|
|
||
|
|
/* Private define ---------------------------------------------------------------*/
|
||
|
|
#define NU_TIMER_DEVICE(etimer) (nu_etimer_t)(etimer)
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
ETIMER_START = -1,
|
||
|
|
#if defined(BSP_USING_ETIMER0)
|
||
|
|
ETIMER0_IDX,
|
||
|
|
#endif
|
||
|
|
#if defined(BSP_USING_ETIMER1)
|
||
|
|
ETIMER1_IDX,
|
||
|
|
#endif
|
||
|
|
#if defined(BSP_USING_ETIMER2)
|
||
|
|
ETIMER2_IDX,
|
||
|
|
#endif
|
||
|
|
#if defined(BSP_USING_ETIMER3)
|
||
|
|
ETIMER3_IDX,
|
||
|
|
#endif
|
||
|
|
ETIMER_CNT
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Private typedef --------------------------------------------------------------*/
|
||
|
|
struct nu_etimer
|
||
|
|
{
|
||
|
|
rt_hwtimer_t parent;
|
||
|
|
char *name;
|
||
|
|
uint32_t idx;
|
||
|
|
IRQn_Type irqn;
|
||
|
|
E_SYS_IPRST rstidx;
|
||
|
|
E_SYS_IPCLK clkidx;
|
||
|
|
};
|
||
|
|
typedef struct nu_etimer *nu_etimer_t;
|
||
|
|
|
||
|
|
/* Private functions ------------------------------------------------------------*/
|
||
|
|
static void nu_etimer_init(rt_hwtimer_t *timer, rt_uint32_t state);
|
||
|
|
static rt_err_t nu_etimer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode);
|
||
|
|
static void nu_etimer_stop(rt_hwtimer_t *timer);
|
||
|
|
static rt_uint32_t nu_etimer_count_get(rt_hwtimer_t *timer);
|
||
|
|
static rt_err_t nu_etimer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args);
|
||
|
|
|
||
|
|
/* Public functions -------------------------------------------------------------*/
|
||
|
|
|
||
|
|
|
||
|
|
/* Private variables ------------------------------------------------------------*/
|
||
|
|
static struct nu_etimer nu_etimer_arr [] =
|
||
|
|
{
|
||
|
|
#if defined(BSP_USING_ETIMER0)
|
||
|
|
{
|
||
|
|
.name = "etmr0",
|
||
|
|
.idx = 0,
|
||
|
|
.irqn = IRQ_ETMR0,
|
||
|
|
.rstidx = ETIMER0RST,
|
||
|
|
.clkidx = ETIMER0CKEN,
|
||
|
|
},
|
||
|
|
#endif
|
||
|
|
#if defined(BSP_USING_ETIMER1)
|
||
|
|
{
|
||
|
|
.name = "etmr1",
|
||
|
|
.idx = 1,
|
||
|
|
.irqn = IRQ_ETMR1,
|
||
|
|
.rstidx = ETIMER1RST,
|
||
|
|
.clkidx = ETIMER1CKEN,
|
||
|
|
},
|
||
|
|
#endif
|
||
|
|
#if defined(BSP_USING_ETIMER2)
|
||
|
|
{
|
||
|
|
.name = "etmr2",
|
||
|
|
.idx = 2,
|
||
|
|
.irqn = IRQ_ETMR2,
|
||
|
|
.rstidx = ETIMER2RST,
|
||
|
|
.clkidx = ETIMER2CKEN,
|
||
|
|
},
|
||
|
|
#endif
|
||
|
|
#if defined(BSP_USING_ETIMER3)
|
||
|
|
{
|
||
|
|
.name = "etmr3",
|
||
|
|
.idx = 3,
|
||
|
|
.irqn = IRQ_ETMR3,
|
||
|
|
.rstidx = ETIMER3RST,
|
||
|
|
.clkidx = ETIMER3CKEN,
|
||
|
|
},
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct rt_hwtimer_info nu_etimer_info =
|
||
|
|
{
|
||
|
|
12000000, /* maximum count frequency */
|
||
|
|
46875, /* minimum count frequency */
|
||
|
|
0xFFFFFF, /* the maximum counter value */
|
||
|
|
HWTIMER_CNTMODE_UP, /* Increment or Decreasing count mode */
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct rt_hwtimer_ops nu_etimer_ops =
|
||
|
|
{
|
||
|
|
nu_etimer_init,
|
||
|
|
nu_etimer_start,
|
||
|
|
nu_etimer_stop,
|
||
|
|
nu_etimer_count_get,
|
||
|
|
nu_etimer_control
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Functions define ------------------------------------------------------------*/
|
||
|
|
static void nu_etimer_init(rt_hwtimer_t *timer, rt_uint32_t state)
|
||
|
|
{
|
||
|
|
nu_etimer_t psNuETmr = NU_TIMER_DEVICE(timer);
|
||
|
|
RT_ASSERT(psNuETmr != RT_NULL);
|
||
|
|
|
||
|
|
if (1 == state)
|
||
|
|
{
|
||
|
|
uint32_t timer_clk;
|
||
|
|
struct rt_hwtimer_info *info = &nu_etimer_info;
|
||
|
|
|
||
|
|
timer_clk = ETIMER_GetModuleClock(psNuETmr->idx);
|
||
|
|
info->maxfreq = timer_clk;
|
||
|
|
info->minfreq = timer_clk / 256;
|
||
|
|
ETIMER_Open(psNuETmr->idx, ETIMER_ONESHOT_MODE, 1);
|
||
|
|
ETIMER_EnableInt(psNuETmr->idx);
|
||
|
|
rt_hw_interrupt_umask(psNuETmr->irqn);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
rt_hw_interrupt_mask(psNuETmr->irqn);
|
||
|
|
ETIMER_DisableInt(psNuETmr->idx);
|
||
|
|
ETIMER_Close(psNuETmr->idx);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static rt_err_t nu_etimer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode)
|
||
|
|
{
|
||
|
|
rt_err_t ret = RT_EINVAL;
|
||
|
|
rt_uint32_t u32OpMode;
|
||
|
|
|
||
|
|
nu_etimer_t psNuETmr = NU_TIMER_DEVICE(timer);
|
||
|
|
RT_ASSERT(psNuETmr != RT_NULL);
|
||
|
|
|
||
|
|
if (cnt <= 1 || cnt > 0xFFFFFF)
|
||
|
|
{
|
||
|
|
goto exit_nu_etimer_start;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (opmode)
|
||
|
|
{
|
||
|
|
case HWTIMER_MODE_PERIOD:
|
||
|
|
u32OpMode = ETIMER_PERIODIC_MODE;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case HWTIMER_MODE_ONESHOT:
|
||
|
|
u32OpMode = ETIMER_ONESHOT_MODE;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
goto exit_nu_etimer_start;
|
||
|
|
}
|
||
|
|
|
||
|
|
ETIMER_SET_CMP_VALUE(psNuETmr->idx, cnt);
|
||
|
|
ETIMER_SET_OPMODE(psNuETmr->idx, u32OpMode);
|
||
|
|
ETIMER_EnableInt(psNuETmr->idx);
|
||
|
|
rt_hw_interrupt_umask(psNuETmr->irqn);
|
||
|
|
|
||
|
|
ETIMER_Start(psNuETmr->idx);
|
||
|
|
|
||
|
|
ret = RT_EOK;
|
||
|
|
|
||
|
|
exit_nu_etimer_start:
|
||
|
|
|
||
|
|
return -(ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void nu_etimer_stop(rt_hwtimer_t *timer)
|
||
|
|
{
|
||
|
|
nu_etimer_t psNuETmr = NU_TIMER_DEVICE(timer);
|
||
|
|
RT_ASSERT(psNuETmr != RT_NULL);
|
||
|
|
|
||
|
|
rt_hw_interrupt_mask(psNuETmr->irqn);
|
||
|
|
ETIMER_DisableInt(psNuETmr->idx);
|
||
|
|
ETIMER_Stop(psNuETmr->idx);
|
||
|
|
ETIMER_ClearCounter(psNuETmr->idx);
|
||
|
|
}
|
||
|
|
|
||
|
|
static rt_uint32_t nu_etimer_count_get(rt_hwtimer_t *timer)
|
||
|
|
{
|
||
|
|
nu_etimer_t psNuETmr = NU_TIMER_DEVICE(timer);
|
||
|
|
RT_ASSERT(psNuETmr != RT_NULL);
|
||
|
|
|
||
|
|
return ETIMER_GetCounter(psNuETmr->idx);
|
||
|
|
}
|
||
|
|
|
||
|
|
static rt_err_t nu_etimer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args)
|
||
|
|
{
|
||
|
|
rt_err_t ret = RT_EOK;
|
||
|
|
nu_etimer_t psNuETmr = NU_TIMER_DEVICE(timer);
|
||
|
|
RT_ASSERT(psNuETmr != RT_NULL);
|
||
|
|
|
||
|
|
switch (cmd)
|
||
|
|
{
|
||
|
|
case HWTIMER_CTRL_FREQ_SET:
|
||
|
|
{
|
||
|
|
uint32_t clk;
|
||
|
|
uint32_t pre;
|
||
|
|
|
||
|
|
clk = ETIMER_GetModuleClock(psNuETmr->idx);
|
||
|
|
pre = clk / *((uint32_t *)args) - 1;
|
||
|
|
ETIMER_SET_PRESCALE_VALUE(psNuETmr->idx, pre);
|
||
|
|
*((uint32_t *)args) = clk / (pre + 1) ;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case HWTIMER_CTRL_STOP:
|
||
|
|
ETIMER_Stop(psNuETmr->idx);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
ret = RT_EINVAL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return -(ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* All UART interrupt service routine
|
||
|
|
*/
|
||
|
|
static void nu_etimer_isr(int vector, void *param)
|
||
|
|
{
|
||
|
|
nu_etimer_t psNuETmr = NU_TIMER_DEVICE(param);
|
||
|
|
RT_ASSERT(psNuETmr != RT_NULL);
|
||
|
|
|
||
|
|
if (ETIMER_GetIntFlag(psNuETmr->idx))
|
||
|
|
{
|
||
|
|
ETIMER_ClearIntFlag(psNuETmr->idx);
|
||
|
|
rt_device_hwtimer_isr(&psNuETmr->parent);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int rt_hw_etimer_init(void)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
rt_err_t ret = RT_EOK;
|
||
|
|
for (i = (ETIMER_START + 1); i < ETIMER_CNT; i++)
|
||
|
|
{
|
||
|
|
nu_sys_ipclk_enable(nu_etimer_arr[i].clkidx);
|
||
|
|
|
||
|
|
nu_sys_ip_reset(nu_etimer_arr[i].rstidx);
|
||
|
|
|
||
|
|
/* Register Etimer information. */
|
||
|
|
nu_etimer_arr[i].parent.info = &nu_etimer_info;
|
||
|
|
|
||
|
|
/* Register Etimer operation. */
|
||
|
|
nu_etimer_arr[i].parent.ops = &nu_etimer_ops;
|
||
|
|
|
||
|
|
/* Register Etimer interrupt service routine. */
|
||
|
|
rt_hw_interrupt_install(nu_etimer_arr[i].irqn, nu_etimer_isr, &nu_etimer_arr[i], nu_etimer_arr[i].name);
|
||
|
|
|
||
|
|
/* Register RT hwtimer device. */
|
||
|
|
ret = rt_device_hwtimer_register(&nu_etimer_arr[i].parent, nu_etimer_arr[i].name, &nu_etimer_arr[i]);
|
||
|
|
RT_ASSERT(ret == RT_EOK);
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
INIT_BOARD_EXPORT(rt_hw_etimer_init);
|
||
|
|
|
||
|
|
#endif //#if defined(BSP_USING_ETIMER) && defined(RT_USING_HWTIMER)
|