181 lines
6.7 KiB
C
181 lines
6.7 KiB
C
/*!
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\file main.c
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\brief TIMER2 oc inactive 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 "gd32w515p_eval.h"
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#include <stdio.h>
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/* configure the GPIO ports */
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void gpio_config(void);
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/* configure the TIMER interrupt */
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void nvic_config(void);
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/* configure the TIMER peripheral */
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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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/* enable the GPIOA clock */
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rcu_periph_clock_enable(RCU_GPIOA);
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/*Configure PA0 PA1 PA2(TIMER1 CH0 CH1 CH2) as alternate function*/
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_0);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ,GPIO_PIN_0);
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gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_0);
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_1);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ,GPIO_PIN_1);
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gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_1);
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_2);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ,GPIO_PIN_2);
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gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_2);
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}
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/*!
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\brief configure the TIMER interrupt
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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 nvic_config(void)
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{
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nvic_irq_enable(TIMER1_IRQn, 0,0);
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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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TIMER1 Configuration:
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TIMER1CLK = SystemCoreClock / 18000 = 10KHz,
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And generate 3 signals with 3 different delays:
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TIMER1_CH0 delay = 4000/10000 = 0.4s
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TIMER1_CH1 delay = 8000/10000 = 0.8s
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TIMER1_CH2 delay = 12000/10000 = 1.2s
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--------------------------------------------------------------- */
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timer_oc_parameter_struct timer_ocinitpara;
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timer_parameter_struct timer_initpara;
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rcu_timer_clock_prescaler_config(RCU_TIMER_PSC_MUL4);
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rcu_periph_clock_enable(RCU_TIMER1);
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timer_deinit(TIMER1);
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/* TIMER1 configuration */
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timer_initpara.prescaler = 17999;
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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 = 65535;
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timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
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timer_initpara.repetitioncounter = 0;
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timer_init(TIMER1,&timer_initpara);
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/* CH0,CH1 and CH2 configuration in OC active mode */
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timer_ocinitpara.outputstate = TIMER_CCX_ENABLE;
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timer_ocinitpara.outputnstate = TIMER_CCXN_DISABLE;
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timer_ocinitpara.ocpolarity = TIMER_OC_POLARITY_LOW;
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timer_ocinitpara.ocnpolarity = TIMER_OCN_POLARITY_LOW;
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timer_ocinitpara.ocidlestate = TIMER_OC_IDLE_STATE_LOW;
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timer_ocinitpara.ocnidlestate = TIMER_OCN_IDLE_STATE_LOW;
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timer_channel_output_config(TIMER1,TIMER_CH_0,&timer_ocinitpara);
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timer_channel_output_config(TIMER1,TIMER_CH_1,&timer_ocinitpara);
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timer_channel_output_config(TIMER1,TIMER_CH_2,&timer_ocinitpara);
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/* configure TIMER channel output pulse value */
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timer_channel_output_pulse_value_config(TIMER1, TIMER_CH_0, 3999);
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/* CH0 configuration in OC inactive mode */
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timer_channel_output_mode_config(TIMER1, TIMER_CH_0, TIMER_OC_MODE_ACTIVE);
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/* configure TIMER channel output shadow function */
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timer_channel_output_shadow_config(TIMER1, TIMER_CH_0, TIMER_OC_SHADOW_DISABLE);
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/* configure TIMER channel output pulse value */
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timer_channel_output_pulse_value_config(TIMER1, TIMER_CH_1, 7999);
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/* CH1 configuration in OC inactive mode */
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timer_channel_output_mode_config(TIMER1, TIMER_CH_1, TIMER_OC_MODE_INACTIVE);
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/* configure TIMER channel output shadow function */
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timer_channel_output_shadow_config(TIMER1, TIMER_CH_1, TIMER_OC_SHADOW_DISABLE);
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/* configure TIMER channel output pulse value */
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timer_channel_output_pulse_value_config(TIMER1, TIMER_CH_2, 11999);
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/* CH2 configuration in OC inactive mode */
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timer_channel_output_mode_config(TIMER1, TIMER_CH_2, TIMER_OC_MODE_INACTIVE);
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/* configure TIMER channel output shadow function */
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timer_channel_output_shadow_config(TIMER1, TIMER_CH_2, TIMER_OC_SHADOW_DISABLE);
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/* enable the TIMER channel0/1/2 interrupt */
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timer_interrupt_enable(TIMER1, TIMER_INT_CH0 | TIMER_INT_CH1 | TIMER_INT_CH2);
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/* turn on selected led */
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gd_eval_led_off(LED3);
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gd_eval_led_off(LED2);
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/* enable a TIMER */
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timer_enable(TIMER1);
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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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/* configure led GPIO */
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gd_eval_led_init(LED3);
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gd_eval_led_init(LED2);
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/* configure the GPIO ports */
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gpio_config();
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/* configure the TIMER interrupt */
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nvic_config();
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/* configure the TIMER peripheral */
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timer_config();
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while (1);
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}
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