161 lines
6.0 KiB
C
161 lines
6.0 KiB
C
/*!
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\file main.c
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\brief debug TIMER0 when the MCU is in debug mode
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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 "systick.h"
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void gpio_configuration(void);
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void timer_configuration(void);
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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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/* systick configuration */
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systick_config();
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/* system clocks configuration */
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rcu_periph_clock_enable(RCU_GPIOA);
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/* gpio configuration */
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gpio_configuration();
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/* enable the led clock */
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rcu_periph_clock_enable(RCU_GPIOA);
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/* configure led GPIO port */
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gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_15);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ, GPIO_PIN_15);
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GPIO_BC(GPIOA) = GPIO_PIN_15;
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timer_configuration();
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/* keep timer0 counter when the MCU is in debug mode */
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dbg_periph_enable(DBG_TIMER0_HOLD);
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while(1)
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{
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/* toggle LED1 output status every second */
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GPIO_TG(GPIOA) = GPIO_PIN_15;
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/* you can set breakpoint here, then look over the register in timer0 */
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delay_1ms(1000);
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}
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}
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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_configuration(void)
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{
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/* Configure PA9 PA10 PA11(TIMER0 CH1 CH2 CH3) as alternate function */
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_9);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ, GPIO_PIN_9);
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_10);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ, GPIO_PIN_10);
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_11);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_166MHZ, GPIO_PIN_11);
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gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_9);
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gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_10);
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gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_11);
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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_configuration(void)
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{
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/* TIMER0 configuration: generate 3 PWM signals with 3 different duty cycles:
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TIMER0CLK = SystemCoreClock / 90 = 2MHz
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TIMER0 Channel1 duty cycle = 4000/ 16000 = 25%
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TIMER0 Channel2 duty cycle = 8000/ 16000 = 50%
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TIMER0 Channel3 duty cycle = 12000/ 16000 = 75% */
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timer_parameter_struct timer_initpara;
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timer_oc_parameter_struct timer_ocintpara;
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rcu_periph_clock_enable(RCU_TIMER0);
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/* TIMER0 configuration */
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timer_deinit(TIMER0);
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/* TIMER0 configuration */
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timer_initpara.prescaler = 89;
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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 = 15999;
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timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
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timer_initpara.repetitioncounter = 0;
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timer_init(TIMER0,&timer_initpara);
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/* CH1,CH2 and CH3 configuration in PWM mode */
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timer_ocintpara.ocpolarity = TIMER_OC_POLARITY_HIGH;
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timer_ocintpara.outputstate = TIMER_CCX_ENABLE;
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timer_channel_output_config(TIMER0, TIMER_CH_1, &timer_ocintpara);
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timer_channel_output_config(TIMER0, TIMER_CH_2, &timer_ocintpara);
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timer_channel_output_config(TIMER0, TIMER_CH_3, &timer_ocintpara);
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timer_channel_output_pulse_value_config(TIMER0, TIMER_CH_1, 3999);
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timer_channel_output_mode_config(TIMER0, TIMER_CH_1, TIMER_OC_MODE_PWM1);
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timer_channel_output_shadow_config(TIMER0, TIMER_CH_1, TIMER_OC_SHADOW_DISABLE);
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timer_channel_output_pulse_value_config(TIMER0, TIMER_CH_2, 7999);
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timer_channel_output_mode_config(TIMER0, TIMER_CH_2, TIMER_OC_MODE_PWM1);
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timer_channel_output_shadow_config(TIMER0, TIMER_CH_2, TIMER_OC_SHADOW_DISABLE);
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timer_channel_output_pulse_value_config(TIMER0, TIMER_CH_3, 11999);
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timer_channel_output_mode_config(TIMER0, TIMER_CH_3, TIMER_OC_MODE_PWM1);
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timer_channel_output_shadow_config(TIMER0, TIMER_CH_3, TIMER_OC_SHADOW_DISABLE);
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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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timer_enable(TIMER0);
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}
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