327 lines
8.2 KiB
C
327 lines
8.2 KiB
C
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/**************************************************************************//**
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*
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* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-9-7 Philo First version
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*
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******************************************************************************/
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#include <rtconfig.h>
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#if (defined(BSP_USING_TIMER) && defined(RT_USING_HWTIMER))
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#include <rtdevice.h>
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#include "NuMicro.h"
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/* Private define ---------------------------------------------------------------*/
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#define NU_TIMER_DEVICE(timer) (nu_timer_t *)(timer)
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#define TIMER_SET_OPMODE(timer, u32OpMode) ((timer)->CTL = ((timer)->CTL & ~TIMER_CTL_OPMODE_Msk) | (u32OpMode))
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/* Private typedef --------------------------------------------------------------*/
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typedef struct nu_timer
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{
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rt_hwtimer_t parent;
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TIMER_T *timer_periph;
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IRQn_Type IRQn;
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} nu_timer_t;
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/* Private functions ------------------------------------------------------------*/
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static void nu_timer_init(rt_hwtimer_t *timer, rt_uint32_t state);
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static rt_err_t nu_timer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode);
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static void nu_timer_stop(rt_hwtimer_t *timer);
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static rt_uint32_t nu_timer_count_get(rt_hwtimer_t *timer);
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static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args);
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/* Public functions -------------------------------------------------------------*/
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/* Private variables ------------------------------------------------------------*/
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#ifdef BSP_USING_TIMER0
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static nu_timer_t nu_timer0;
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#endif
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#ifdef BSP_USING_TIMER1
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static nu_timer_t nu_timer1;
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#endif
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#ifdef BSP_USING_TIMER2
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static nu_timer_t nu_timer2;
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#endif
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#ifdef BSP_USING_TIMER3
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static nu_timer_t nu_timer3;
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#endif
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static struct rt_hwtimer_info nu_timer_info =
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{
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12000000, /* maximum count frequency */
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46875, /* minimum count frequency */
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0xFFFFFF, /* the maximum counter value */
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HWTIMER_CNTMODE_UP,/* Increment or Decreasing count mode */
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};
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static struct rt_hwtimer_ops nu_timer_ops =
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{
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nu_timer_init,
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nu_timer_start,
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nu_timer_stop,
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nu_timer_count_get,
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nu_timer_control
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};
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/* Functions define ------------------------------------------------------------*/
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static void nu_timer_init(rt_hwtimer_t *timer, rt_uint32_t state)
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{
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RT_ASSERT(timer != RT_NULL);
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nu_timer_t *nu_timer = NU_TIMER_DEVICE(timer->parent.user_data);
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RT_ASSERT(nu_timer != RT_NULL);
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RT_ASSERT(nu_timer->timer_periph != RT_NULL);
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if (1 == state)
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{
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uint32_t timer_clk;
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struct rt_hwtimer_info *info = &nu_timer_info;
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timer_clk = TIMER_GetModuleClock(nu_timer->timer_periph);
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info->maxfreq = timer_clk;
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info->minfreq = timer_clk / 256;
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TIMER_Open(nu_timer->timer_periph, TIMER_ONESHOT_MODE, 1);
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TIMER_EnableInt(nu_timer->timer_periph);
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NVIC_EnableIRQ(nu_timer->IRQn);
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}
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else
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{
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NVIC_DisableIRQ(nu_timer->IRQn);
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TIMER_DisableInt(nu_timer->timer_periph);
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TIMER_Close(nu_timer->timer_periph);
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}
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}
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static rt_err_t nu_timer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode)
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{
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rt_err_t err = RT_EOK;
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RT_ASSERT(timer != RT_NULL);
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nu_timer_t *nu_timer = NU_TIMER_DEVICE(timer->parent.user_data);
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RT_ASSERT(nu_timer != RT_NULL);
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RT_ASSERT(nu_timer->timer_periph != RT_NULL);
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if (cnt > 1 && cnt <= 0xFFFFFF)
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{
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TIMER_SET_CMP_VALUE(nu_timer->timer_periph, cnt);
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}
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else
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{
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rt_kprintf("nu_timer_start set compared value failed\n");
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err = RT_ERROR;
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}
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if (HWTIMER_MODE_PERIOD == opmode)
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{
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TIMER_SET_OPMODE(nu_timer->timer_periph, TIMER_PERIODIC_MODE);
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}
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else if (HWTIMER_MODE_ONESHOT == opmode)
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{
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TIMER_SET_OPMODE(nu_timer->timer_periph, TIMER_ONESHOT_MODE);
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}
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else
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{
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rt_kprintf("nu_timer_start set operation mode failed\n");
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err = RT_ERROR;
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}
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TIMER_Start(nu_timer->timer_periph);
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return err;
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}
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static void nu_timer_stop(rt_hwtimer_t *timer)
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{
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RT_ASSERT(timer != RT_NULL);
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nu_timer_t *nu_timer = NU_TIMER_DEVICE(timer->parent.user_data);
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RT_ASSERT(nu_timer != RT_NULL);
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RT_ASSERT(nu_timer->timer_periph != RT_NULL);
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TIMER_Stop(nu_timer->timer_periph);
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}
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static rt_uint32_t nu_timer_count_get(rt_hwtimer_t *timer)
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{
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RT_ASSERT(timer != RT_NULL);
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nu_timer_t *nu_timer = NU_TIMER_DEVICE(timer->parent.user_data);
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RT_ASSERT(nu_timer != RT_NULL);
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RT_ASSERT(nu_timer->timer_periph != RT_NULL);
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return TIMER_GetCounter(nu_timer->timer_periph);
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}
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static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args)
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{
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rt_err_t ret = RT_EOK;
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RT_ASSERT(timer != RT_NULL);
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nu_timer_t *nu_timer = NU_TIMER_DEVICE(timer->parent.user_data);
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RT_ASSERT(nu_timer != RT_NULL);
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RT_ASSERT(nu_timer->timer_periph != RT_NULL);
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switch (cmd)
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{
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case HWTIMER_CTRL_FREQ_SET:
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{
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uint32_t clk;
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uint32_t pre;
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clk = TIMER_GetModuleClock(nu_timer->timer_periph);
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pre = clk / *((uint32_t *)args) - 1;
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TIMER_SET_PRESCALE_VALUE(nu_timer->timer_periph, pre);
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*((uint32_t *)args) = clk / (pre + 1) ;
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}
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break;
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case HWTIMER_CTRL_STOP:
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TIMER_Stop(nu_timer->timer_periph);
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break;
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default:
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ret = RT_EINVAL;
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break;
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}
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return ret;
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}
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int rt_hw_timer_init(void)
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{
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rt_err_t ret = RT_EOK;
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#ifdef BSP_USING_TIMER0
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nu_timer0.timer_periph = TIMER0;
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nu_timer0.parent.info = &nu_timer_info;
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nu_timer0.parent.ops = &nu_timer_ops;
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nu_timer0.IRQn = TMR0_IRQn;
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ret = rt_device_hwtimer_register(&nu_timer0.parent, "timer0", &nu_timer0);
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if (ret != RT_EOK)
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{
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rt_kprintf("timer0 register failed\n");
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}
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SYS_ResetModule(TMR0_RST);
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CLK_EnableModuleClock(TMR0_MODULE);
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#endif
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#ifdef BSP_USING_TIMER1
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nu_timer1.timer_periph = TIMER1;
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nu_timer1.parent.info = &nu_timer_info;
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nu_timer1.parent.ops = &nu_timer_ops;
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nu_timer1.IRQn = TMR1_IRQn;
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ret = rt_device_hwtimer_register(&nu_timer1.parent, "timer1", &nu_timer1);
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if (ret != RT_EOK)
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{
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rt_kprintf("timer1 register failed\n");
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}
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SYS_ResetModule(TMR1_RST);
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CLK_EnableModuleClock(TMR1_MODULE);
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#endif
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#ifdef BSP_USING_TIMER2
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nu_timer2.timer_periph = TIMER2;
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nu_timer2.parent.info = &nu_timer_info;
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nu_timer2.parent.ops = &nu_timer_ops;
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nu_timer2.IRQn = TMR2_IRQn;
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ret = rt_device_hwtimer_register(&nu_timer2.parent, "timer2", &nu_timer2);
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if (ret != RT_EOK)
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{
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rt_kprintf("timer2 register failed\n");
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}
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SYS_ResetModule(TMR2_RST);
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CLK_EnableModuleClock(TMR2_MODULE);
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#endif
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#ifdef BSP_USING_TIMER3
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nu_timer3.timer_periph = TIMER3;
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nu_timer3.parent.info = &nu_timer_info;
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nu_timer3.parent.ops = &nu_timer_ops;
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nu_timer3.IRQn = TMR3_IRQn;
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ret = rt_device_hwtimer_register(&nu_timer3.parent, "timer3", &nu_timer3);
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if (ret != RT_EOK)
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{
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rt_kprintf("timer3 register failed\n");
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}
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SYS_ResetModule(TMR3_RST);
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CLK_EnableModuleClock(TMR3_MODULE);
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#endif
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return ret;
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}
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INIT_BOARD_EXPORT(rt_hw_timer_init);
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#ifdef BSP_USING_TIMER0
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void TMR0_IRQHandler(void)
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{
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rt_interrupt_enter();
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if (TIMER_GetIntFlag(TIMER0))
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{
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TIMER_ClearIntFlag(TIMER0);
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rt_device_hwtimer_isr(&nu_timer0.parent);
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}
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_TIMER1
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void TMR1_IRQHandler(void)
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{
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rt_interrupt_enter();
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if (TIMER_GetIntFlag(TIMER1))
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{
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TIMER_ClearIntFlag(TIMER1);
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rt_device_hwtimer_isr(&nu_timer1.parent);
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}
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_TIMER2
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void TMR2_IRQHandler(void)
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{
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rt_interrupt_enter();
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if (TIMER_GetIntFlag(TIMER2))
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{
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TIMER_ClearIntFlag(TIMER2);
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rt_device_hwtimer_isr(&nu_timer2.parent);
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}
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_TIMER3
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void TMR3_IRQHandler(void)
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{
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rt_interrupt_enter();
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if (TIMER_GetIntFlag(TIMER3))
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{
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TIMER_ClearIntFlag(TIMER3);
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rt_device_hwtimer_isr(&nu_timer3.parent);
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}
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rt_interrupt_leave();
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}
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#endif
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#endif //#if (defined(BSP_USING_TIMER) && defined(RT_USING_HWTIMER))
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