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rt-thread-official/bsp/gd32103c-eval/drivers/drv_hwtimer.c

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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-01-28 iysheng first version
*/
#include <board.h>
#include <drivers/drv_comm.h>
#include <drivers/drv_hwtimer.h>
#ifdef BSP_USING_HWTIMER
enum timer_index_E {
#ifdef BSP_USING_HWTIMER0
TIM0_INDEX,
#endif
#ifdef BSP_USING_HWTIMER1
TIM1_INDEX,
#endif
#ifdef BSP_USING_HWTIMER2
TIM2_INDEX,
#endif
#ifdef BSP_USING_HWTIMER3
TIM3_INDEX,
#endif
#ifdef BSP_USING_HWTIMER4
TIM4_INDEX,
#endif
#ifdef BSP_USING_HWTIMER5
TIM5_INDEX,
#endif
#ifdef BSP_USING_HWTIMER6
TIM6_INDEX,
#endif
#ifdef BSP_USING_HWTIMER7
TIM7_INDEX,
#endif
#ifdef BSP_USING_HWTIMER8
TIM8_INDEX,
#endif
#ifdef BSP_USING_HWTIMER9
TIM9_INDEX,
#endif
#ifdef BSP_USING_HWTIMER10
TIM10_INDEX,
#endif
#ifdef BSP_USING_HWTIMER11
TIM11_INDEX,
#endif
#ifdef BSP_USING_HWTIMER12
TIM12_INDEX,
#endif
#ifdef BSP_USING_HWTIMER13
TIM13_INDEX,
#endif
};
/*
* static void __set_timerx_freq
* Set freq with timerx
*
* @param timerx the pointer of TIMER_TypeDef
* @param freq of the timer clock
* @retval None
*/
static void __set_timerx_freq(TIMER_TypeDef *timerx, uint32_t freq)
{
RCC_ClocksPara RCC_Clocks = {0};
uint16_t prescaler;
uint32_t temp;
RCC_GetClocksFreq(&RCC_Clocks);
if (timerx == TIMER0 || timerx == TIMER7 || timerx == TIMER8 \
|| timerx == TIMER9 || timerx == TIMER10)
{
temp = RCC->GCFGR & RCC_GCFGR_APB2PS;
temp >>= 11;
/* whether should frequency doubling */
temp = (temp < 4) ? 0 : 1;
prescaler = (RCC_Clocks.APB2_Frequency << temp) / freq - 1;
}
else
{
temp = RCC->GCFGR & RCC_GCFGR_APB1PS;
temp >>= 8;
/* whether should frequency doubling */
temp = (temp < 4) ? 0 : 1;
prescaler = (RCC_Clocks.APB1_Frequency << temp) / freq - 1;
}
TIMER_PrescalerConfig(timerx, prescaler, TIMER_PSC_RELOAD_NOW);
}
static void gd32_hwtimer_init(struct rt_hwtimer_device *timer, rt_uint32_t state)
{
TIMER_TypeDef * timer_base = timer->parent.user_data;
TIMER_BaseInitPara TIMER_Init;
RT_ASSERT(timer_base);
if (state)
{
TIMER_InternalClockConfig(timer_base);
TIMER_BaseStructInit(&TIMER_Init);
TIMER_Init.TIMER_Period = timer->info->maxcnt;
TIMER_BaseInit(timer_base, &TIMER_Init);
__set_timerx_freq(timer_base, timer->info->maxfreq);
}
}
static rt_err_t gd32_hwtimer_start(struct rt_hwtimer_device *timer, \
rt_uint32_t cnt, rt_hwtimer_mode_t mode)
{
TIMER_TypeDef * timer_base = timer->parent.user_data;
if (mode == HWTIMER_MODE_ONESHOT)
{
TIMER_SinglePulseMode(timer_base, TIMER_SP_MODE_SINGLE);
}
else if (mode == HWTIMER_MODE_PERIOD)
{
TIMER_SinglePulseMode(timer_base, TIMER_SP_MODE_REPETITIVE);
}
TIMER_SetCounter(timer_base, 0);
TIMER_SetAutoreload(timer_base, cnt - 1);
TIMER_Enable(timer_base, ENABLE);
return 0;
}
static void gd32_hwtimer_stop(struct rt_hwtimer_device *timer)
{
TIMER_TypeDef * timer_base = timer->parent.user_data;
TIMER_Enable(timer_base, DISABLE);
}
static rt_uint32_t gd32_hwtimer_count_get(struct rt_hwtimer_device *timer)
{
TIMER_TypeDef * timer_base = timer->parent.user_data;
rt_uint32_t count;
count = TIMER_GetCounter(timer_base);
return count;
}
static rt_err_t gd32_hwtimer_control(struct rt_hwtimer_device *timer, rt_uint32_t cmd, \
void *args)
{
int ret = RT_EOK;
rt_int32_t freq;
rt_hwtimer_mode_t mode;
switch (cmd)
{
case HWTIMER_CTRL_FREQ_SET:
freq = *(rt_uint32_t *)args;
__set_timerx_freq(timer->parent.user_data, freq);
break;
default:
rt_kprintf("invalid cmd:%x\n", cmd);
ret = -EINVAL;
break;
}
return ret;
}
static const struct rt_hwtimer_ops g_gd32_hwtimer_ops = {
gd32_hwtimer_init,
gd32_hwtimer_start,
gd32_hwtimer_stop,
gd32_hwtimer_count_get,
gd32_hwtimer_control,
};
static gd32_hwtimer_device g_gd32_hwtimer[] = {
#ifdef BSP_USING_HWTIMER0
{
"timer0",
{
TIMER0,
TIMER0_UP_IRQn,
RCU_TIMER0,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER1
{
"timer1",
{
TIMER1,
TIMER1_IRQn,
RCU_TIMER1,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER2
{
"timer2",
{
TIMER2,
TIMER2_IRQn,
RCU_TIMER2,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER3
{
"timer3",
{
TIMER3,
TIMER3_IRQn,
RCU_TIMER3,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER4
{
"timer4",
{
TIMER4,
TIMER4_IRQn,
RCU_TIMER4,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER5
{
"timer5",
{
TIMER5,
TIMER5_IRQn,
RCU_TIMER5,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER6
{
"timer6",
{
TIMER6,
TIMER6_IRQn,
RCU_TIMER6,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER7
{
"timer7",
{
TIMER7,
TIMER7_UP_IRQn,
RCU_TIMER7,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER8
{
"timer8",
{
TIMER8,
TIMER8_IRQn,
RCU_TIMER8,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER9
{
"timer9",
{
TIMER9,
TIMER9_IRQn,
RCU_TIMER9,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER10
{
"timer10",
{
TIMER10,
TIMER10_IRQn,
RCU_TIMER10,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER11
{
"timer11",
{
TIMER11,
TIMER11_IRQn,
RCU_TIMER11,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER12
{
"timer12",
{
TIMER12,
TIMER12_IRQn,
RCU_TIMER12,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
#ifdef BSP_USING_HWTIMER13
{
"timer13",
{
TIMER13,
TIMER13_IRQn,
RCU_TIMER13,
},
{0},
{
1000000,
1000,
0xffff,
0, /* count up mode */
}
},
#endif
};
#ifdef BSP_USING_HWTIMER0
void TIMER0_UP_IRQHandler(void)
{
rt_interrupt_enter();
rt_device_hwtimer_isr(&g_gd32_hwtimer[TIM0_INDEX].hwtimer_dev);
TIMER_ClearIntBitState(g_gd32_hwtimer[TIM0_INDEX].hwtimer_dev.parent.user_data, \
TIMER_INT_UPDATE);
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_HWTIMER1
void TIMER1_IRQHandler(void)
{
rt_interrupt_enter();
rt_device_hwtimer_isr(&g_gd32_hwtimer[TIM1_INDEX].hwtimer_dev);
TIMER_ClearIntBitState(g_gd32_hwtimer[TIM1_INDEX].hwtimer_dev.parent.user_data, \
TIMER_INT_UPDATE);
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_HWTIMER2
void TIMER2_IRQHandler(void)
{
rt_interrupt_enter();
rt_device_hwtimer_isr(&g_gd32_hwtimer[TIM2_INDEX].hwtimer_dev);
TIMER_ClearIntBitState(g_gd32_hwtimer[TIM2_INDEX].hwtimer_dev.parent.user_data, \
TIMER_INT_UPDATE);
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_HWTIMER3
void TIMER3_IRQHandler(void)
{
rt_interrupt_enter();
rt_device_hwtimer_isr(&g_gd32_hwtimer[TIM3_INDEX].hwtimer_dev);
TIMER_ClearIntBitState(g_gd32_hwtimer[TIM3_INDEX].hwtimer_dev.parent.user_data, \
TIMER_INT_UPDATE);
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_HWTIMER4
void TIMER4_IRQHandler(void)
{
rt_interrupt_enter();
rt_device_hwtimer_isr(&g_gd32_hwtimer[TIM4_INDEX].hwtimer_dev);
TIMER_ClearIntBitState(g_gd32_hwtimer[TIM4_INDEX].hwtimer_dev.parent.user_data, \
TIMER_INT_UPDATE);
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_HWTIMER5
void TIMER5_IRQHandler(void)
{
rt_interrupt_enter();
rt_device_hwtimer_isr(&g_gd32_hwtimer[TIM5_INDEX].hwtimer_dev);
TIMER_ClearIntBitState(g_gd32_hwtimer[TIM5_INDEX].hwtimer_dev.parent.user_data, \
TIMER_INT_UPDATE);
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_HWTIMER6
void TIMER6_IRQHandler(void)
{
rt_interrupt_enter();
rt_device_hwtimer_isr(&g_gd32_hwtimer[TIM6_INDEX].hwtimer_dev);
TIMER_ClearIntBitState(g_gd32_hwtimer[TIM6_INDEX].hwtimer_dev.parent.user_data, \
TIMER_INT_UPDATE);
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_HWTIMER7
void TIMER7_UP_IRQHandler(void)
{
rt_interrupt_enter();
rt_device_hwtimer_isr(&g_gd32_hwtimer[TIM7_INDEX].hwtimer_dev);
TIMER_ClearIntBitState(g_gd32_hwtimer[TIM7_INDEX].hwtimer_dev.parent.user_data, \
TIMER_INT_UPDATE);
rt_interrupt_leave();
}
#endif
static int rt_hwtimer_init(void)
{
int ret = 0, i = 0;
for (; i < ARRAY_SIZE(g_gd32_hwtimer); i++)
{
g_gd32_hwtimer[i].hwtimer_dev.ops = &g_gd32_hwtimer_ops;
g_gd32_hwtimer[i].hwtimer_dev.info = &g_gd32_hwtimer[i].hwtimer_info;
rcu_periph_clock_enable(g_gd32_hwtimer[i].hw_data.rcu);
NVIC_SetPriority(g_gd32_hwtimer[i].hw_data.irqn, 0);
NVIC_EnableIRQ(g_gd32_hwtimer[i].hw_data.irqn);
TIMER_INTConfig(g_gd32_hwtimer[i].hw_data.reg_base, TIMER_INT_UPDATE, ENABLE);
ret = rt_device_hwtimer_register(&g_gd32_hwtimer[i].hwtimer_dev, \
g_gd32_hwtimer[i].dev_name, g_gd32_hwtimer[i].hw_data.reg_base);
if (RT_EOK != ret)
{
rt_kprintf("failed register %s, err=%d\n", g_gd32_hwtimer[i].dev_name, \
ret);
break;
}
}
return ret;
}
INIT_BOARD_EXPORT(rt_hwtimer_init);
#endif
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