157 lines
5.9 KiB
C
157 lines
5.9 KiB
C
/*!
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\file main.c
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\brief TIMER0 deadtime break demo for gd32w51x
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\version 2021-10-30, V1.0.0, firmware for GD32W51x
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*/
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/*
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Copyright (c) 2021, GigaDevice Semiconductor Inc.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#include "gd32w51x.h"
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#include <stdio.h>
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#include "gd32w515p_eval.h"
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void gpio_config(void);
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void timer_config(void);
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/*!
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\brief configure the GPIO ports
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\param[in] none
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\param[out] none
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\retval none
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*/
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void gpio_config(void)
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{
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rcu_periph_clock_enable(RCU_GPIOA);
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rcu_periph_clock_enable(RCU_GPIOB);
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/*configure PA8(TIMER0 CH0) as alternate function*/
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_8);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ,GPIO_PIN_8);
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gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_8);
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/*configure PB13(TIMER0 CH0N) as alternate function*/
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gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_13);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ,GPIO_PIN_13);
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gpio_af_set(GPIOB, GPIO_AF_1, GPIO_PIN_13);
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/*configure PB12(TIMER0 BKIN) as alternate function*/
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gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_12);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ,GPIO_PIN_12);
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gpio_af_set(GPIOB, GPIO_AF_1, GPIO_PIN_12);
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}
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/*!
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\brief configure the TIMER peripheral
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\param[in] none
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\param[out] none
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\retval none
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*/
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void timer_config(void)
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{
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/* -----------------------------------------------------------------------
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TIMER0 configuration:
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generate 1 complementary PWM signal.
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TIMER0CLK is fixed to systemcoreclock, the TIMER0 prescaler is equal to 180 so the
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TIMER0 counter clock used is 1MHz.
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the duty cycle is computed as the following description:
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the channel 0 duty cycle is set to 25% so channel 0N is set to 75%.
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insert a dead time equal to ((32+31)*16*4)/systemcoreclock = 22.4us
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configure the break feature, active at high level, and using the automatic
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output enable feature.
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----------------------------------------------------------------------- */
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timer_oc_parameter_struct timer_ocintpara;
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timer_parameter_struct timer_initpara;
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timer_break_parameter_struct timer_breakpara;
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rcu_timer_clock_prescaler_config(RCU_TIMER_PSC_MUL4);
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rcu_periph_clock_enable(RCU_TIMER0);
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timer_deinit(TIMER0);
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/* TIMER0 configuration */
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timer_initpara.prescaler = 179;
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timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
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timer_initpara.counterdirection = TIMER_COUNTER_UP;
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timer_initpara.period = 1599;
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timer_initpara.clockdivision = TIMER_CKDIV_DIV4;
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timer_initpara.repetitioncounter = 0;
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timer_init(TIMER0,&timer_initpara);
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/* CH0/CH0N configuration in PWM mode0 */
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timer_ocintpara.outputstate = TIMER_CCX_ENABLE;
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timer_ocintpara.outputnstate = TIMER_CCXN_ENABLE;
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timer_ocintpara.ocpolarity = TIMER_OC_POLARITY_HIGH;
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timer_ocintpara.ocnpolarity = TIMER_OCN_POLARITY_HIGH;
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timer_ocintpara.ocidlestate = TIMER_OC_IDLE_STATE_HIGH;
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timer_ocintpara.ocnidlestate = TIMER_OCN_IDLE_STATE_LOW;
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timer_channel_output_config(TIMER0,TIMER_CH_0,&timer_ocintpara);
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timer_channel_output_pulse_value_config(TIMER0,TIMER_CH_0,399);
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timer_channel_output_mode_config(TIMER0,TIMER_CH_0,TIMER_OC_MODE_PWM0);
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timer_channel_output_shadow_config(TIMER0,TIMER_CH_0,TIMER_OC_SHADOW_DISABLE);
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/* automatic output enable, break, dead time and lock configuration*/
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timer_breakpara.runoffstate = TIMER_ROS_STATE_DISABLE;
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timer_breakpara.ideloffstate = TIMER_IOS_STATE_DISABLE ;
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timer_breakpara.deadtime = 255;
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timer_breakpara.breakpolarity = TIMER_BREAK_POLARITY_LOW;
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timer_breakpara.outputautostate = TIMER_OUTAUTO_ENABLE;
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timer_breakpara.protectmode = TIMER_CCHP_PROT_0;
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timer_breakpara.breakstate = TIMER_BREAK_ENABLE;
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timer_break_config(TIMER0,&timer_breakpara);
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/* TIMER0 primary output function enable */
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timer_primary_output_config(TIMER0,ENABLE);
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/* auto-reload preload enable */
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timer_auto_reload_shadow_enable(TIMER0);
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/* TIMER0 counter enable */
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timer_enable(TIMER0);
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}
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/*!
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\brief main function
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\param[in] none
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\param[out] none
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\retval none
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*/
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int main(void)
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{
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gpio_config();
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timer_config();
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while (1);
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}
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