SysTick定时器延时函数

/*! \file gd32f3x0_timer.c \brief TIMER driver \version 2017-06-06, V1.0.0, firmware for GD32F3x0 \version 2019-06-01, V2.0.0, firmware for GD32F3x0 \version 2020-09-30, V2.1.0, firmware for GD32F3x0 \version 2022-01-06, V2.2.0, firmware for GD32F3x0 */ /* Copyright (c) 2022, GigaDevice Semiconductor Inc. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "gd32f3x0_timer.h" /*! \brief deinit a TIMER \param[in] timer_periph: TIMERx(x=0..2,13..16),TIMER5 just for GD32F350 \param[out] none \retval none */ void timer_deinit(uint32_t timer_periph) { switch(timer_periph) { case TIMER0: /* reset TIMER0 */ rcu_periph_reset_enable(RCU_TIMER0RST); rcu_periph_reset_disable(RCU_TIMER0RST); break; case TIMER1: /* reset TIMER1 */ rcu_periph_reset_enable(RCU_TIMER1RST); rcu_periph_reset_disable(RCU_TIMER1RST); break; case TIMER2: /* reset TIMER2 */ rcu_periph_reset_enable(RCU_TIMER2RST); rcu_periph_reset_disable(RCU_TIMER2RST); break; #ifdef GD32F350 case TIMER5: /* reset TIMER5 */ rcu_periph_reset_enable(RCU_TIMER5RST); rcu_periph_reset_disable(RCU_TIMER5RST); break; #endif case TIMER13: /* reset TIMER13 */ rcu_periph_reset_enable(RCU_TIMER13RST); rcu_periph_reset_disable(RCU_TIMER13RST); break; case TIMER14: /* reset TIMER14 */ rcu_periph_reset_enable(RCU_TIMER14RST); rcu_periph_reset_disable(RCU_TIMER14RST); break; case TIMER15: /* reset TIMER15 */ rcu_periph_reset_enable(RCU_TIMER15RST); rcu_periph_reset_disable(RCU_TIMER15RST); break; case TIMER16: /* reset TIMER16 */ rcu_periph_reset_enable(RCU_TIMER16RST); rcu_periph_reset_disable(RCU_TIMER16RST); break; default: break; } } /*! \brief initialize TIMER init parameter struct with a default value \param[in] initpara: init parameter struct \param[out] none \retval none */ void timer_struct_para_init(timer_parameter_struct *initpara) { /* initialize the init parameter struct member with the default value */ initpara->prescaler = 0U; initpara->alignedmode = TIMER_COUNTER_EDGE; initpara->counterdirection = TIMER_COUNTER_UP; initpara->period = 65535U; initpara->clockdivision = TIMER_CKDIV_DIV1; initpara->repetitioncounter = 0U; } /*! \brief initialize TIMER counter \param[in] timer_periph: TIMERx(x=0..2,13..16),TIMER5 just for GD32F350 \param[in] timer_initpara: init parameter struct prescaler: prescaler value of the counter clock,0~65535 alignedmode: TIMER_COUNTER_EDGE,TIMER_COUNTER_CENTER_DOWN,TIMER_COUNTER_CENTER_UP,TIMER_COUNTER_CENTER_BOTH counterdirection: TIMER_COUNTER_UP,TIMER_COUNTER_DOWN period: counter auto reload value,(TIMER1 32 bit) clockdivision: TIMER_CKDIV_DIV1,TIMER_CKDIV_DIV2,TIMER_CKDIV_DIV4 repetitioncounter: counter repetition value,0~255 \param[out] none \retval none */ void timer_init(uint32_t timer_periph, timer_parameter_struct *initpara) { /* configure the counter prescaler value */ TIMER_PSC(timer_periph) = (uint16_t)initpara->prescaler; /* configure the counter direction and aligned mode */ if((TIMER0 == timer_periph) || (TIMER1 == timer_periph) || (TIMER2 == timer_periph)) { TIMER_CTL0(timer_periph) &= ~(uint32_t)(TIMER_CTL0_DIR | TIMER_CTL0_CAM); TIMER_CTL0(timer_periph) |= (uint32_t)initpara->alignedmode; TIMER_CTL0(timer_periph) |= (uint32_t)initpara->counterdirection; } /* configure the autoreload value */ TIMER_CAR(timer_periph) = (uint32_t)initpara->period; if((TIMER0 == timer_periph) || (TIMER1 == timer_periph) || (TIMER2 == timer_periph) || (TIMER13 == timer_periph) || (TIMER14 == timer_periph) || (TIMER15 == timer_periph) || (TIMER16 == timer_periph)) { /* reset the CKDIV bit */ TIMER_CTL0(timer_periph) &= ~(uint32_t)TIMER_CTL0_CKDIV; TIMER_CTL0(timer_periph) |= (uint32_t)initpara->clockdivision; } if((TIMER0 == timer_periph) || (TIMER14 == timer_periph) || (TIMER15 == timer_periph) || (TIMER16 == timer_periph)) { /* configure the repetition counter value */ TIMER_CREP(timer_periph) = (uint32_t)initpara->repetitioncounter; } /* generate an update event */ TIMER_SWEVG(timer_periph) |= (uint32_t)TIMER_SWEVG_UPG; } /*! \brief enable a TIMER \param[in] timer_periph: TIMERx(x=0..2,13..16),TIMER5 just for GD32F350 \param[out] none \retval none */ void timer_enable(uint32_t timer_periph) { TIMER_CTL0(timer_periph) |= (uint32_t)TIMER_CTL0_CEN; } /*! \brief disable a TIMER \param[in] timer_periph: TIMERx(x=0..2,13..16),TIMER5 just for GD32F350 \param[out] none \retval none */ void timer_disable(uint32_t timer_periph) { TIMER_CTL0(timer_periph) &= ~(uint32_t)TIMER_CTL0_CEN; } /*! \brief enable the auto reload shadow function \param[in] timer_periph: TIMERx(x=0..2,13..16),TIMER5 just for GD32F350 \param[out] none \retval none */ void timer_auto_reload_shadow_enable(uint32_t timer_periph) { TIMER_CTL0(timer_periph) |= (uint32_t)TIMER_CTL0_ARSE; } /*! \brief disable the auto reload shadow function \param[in] timer_periph: TIMERx(x=0..2,13..16),TIMER5 just for GD32F350 \param[out] none \retval none */ void timer_auto_reload_shadow_disable(uint32_t timer_periph) { TIMER_CTL0(timer_periph) &= ~(uint32_t)TIMER_CTL0_ARSE; } /*! \brief enable the update event \param[in] timer_periph: TIMERx(x=0..2,13..16),TIMER5 just for GD32F350 \param[out] none \retval none */ void timer_update_event_enable(uint32_t timer_periph) { TIMER_CTL0(timer_periph) &= ~(uint32_t)TIMER_CTL0_UPDIS; } /*! \brief disable the update event \param[in] timer_periph: TIMERx(x=0..2,13..16),TIMER5 just for GD32F350 \param[out] none \retval none */ void timer_update_event_disable(uint32_t timer_periph) { TIMER_CTL