#include "Timer.h" #include "gd32c10x.h" #include "gd32c10x_gpio.h" #include "gd32c10x_timer.h" #include #include #include constexpr int TIMER1_PRESCALER = 11999; constexpr int TIMER1_PERIOD = 9999; constexpr int TIMER0_PRESCALER = 5999; constexpr int TIMER0_PERIOD = 15999; constexpr int TIMER0_CH0_PULSE = 4000; constexpr int TIMER0_CH1_PULSE = 6000; constexpr int TIMER0_CH2_PULSE = 8000; /** * @brief 设置引脚中断优先级 * @return void * *设置引脚中断优先级 */ void nvic_config(void) { /* 设置NVIC优先级分组，1位抢占优先级，3位响应优先级 */ nvic_priority_group_set(NVIC_PRIGROUP_PRE1_SUB3); /* 使能TIMER1中断，设置抢占优先级为1，子优先级为1 */ nvic_irq_enable(TIMER1_IRQn, 1, 1); } /** * @brief 配置定时器1 * @return void * *配置定时器1 */ void timer1_config(void) { /* ---------------------------------------------------------------------------- TIMER1 Configuration: TIMER1CLK = SystemCoreClock/12000 = 10KHz, the period is 1s(10000/10000 = 1s). ---------------------------------------------------------------------------- */ timer_parameter_struct timer_initpara; /* 使能TIMER1时钟 */ rcu_periph_clock_enable(RCU_TIMER1); /* 复位TIMER1外设到默认状态 */ timer_deinit(TIMER1); /* 初始化TIMER初始化参数结构体 */ timer_struct_para_init(&timer_initpara); /* TIMER1配置参数设置 */ timer_initpara.prescaler = TIMER1_PRESCALER; /* 预分频值：12000分频(从0开始计数) */ timer_initpara.alignedmode = TIMER_COUNTER_EDGE; /* 边沿对齐模式 */ timer_initpara.counterdirection = TIMER_COUNTER_UP; /* 向上计数模式 */ timer_initpara.period = TIMER1_PERIOD; /* 自动重装载值：10000次计数(从0开始计数) */ timer_initpara.clockdivision = TIMER_CKDIV_DIV1; /* 时钟分频值：1分频 */ timer_init(TIMER1, &timer_initpara); /* 清除更新中断标志位 */ timer_interrupt_flag_clear(TIMER1, TIMER_INT_FLAG_UP); /* 使能更新中断 */ timer_interrupt_enable(TIMER1, TIMER_INT_UP); /* 使能TIMER1 */ timer_enable(TIMER1); } /** * @brief 配置TIMER1中断 * @return void */ void User_timer_init(void) { /* 配置TIMER1中断 */ nvic_config(); /* 配置TIMER1 */ timer1_config(); } /** * @brief TIMER1中断处理函数 * @return void */ void TIMER1_IRQHandler(void) { u32 cnt = timer_counter_read(TIMER1); // 根据计数器值执行不同的定时任务 // 每100us执行一次 // (此处可以添加需要每100us执行的代码) // 每1ms执行一次 (100us * 10) if (cnt % 10 == 0) { // 添加需要每1ms执行的代码 } // 每10ms执行一次 (100us * 100) if (cnt % 100 == 0) { // 添加需要每10ms执行的代码 } // 每100ms执行一次 (100us * 1000) if (cnt % 1000 == 0) { // 添加需要每100ms执行的代码 } // 每1s执行一次 (100us * 10000) if (cnt % 10000 == 0) { // 添加需要每1s执行的代码 } if (SET == timer_interrupt_flag_get(TIMER1, TIMER_INT_FLAG_UP)) { /* 清除更新中断标志位 */ timer_interrupt_flag_clear(TIMER1, TIMER_INT_FLAG_UP); } } /** * @brief TIMER0 GPIO配置函数 */ void timer0_gpio_config(void) { // 时钟使能 rcu_periph_clock_enable(RCU_GPIOA); rcu_periph_clock_enable(RCU_AF); // TIMER0 GPIO初始化 gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_0); gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_1); gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_2); /* 配置TIMER0完全重映射 */ gpio_pin_remap_config(GPIO_TIMER0_FULL_REMAP, ENABLE); } /** * @brief TIMER0 配置函数 */ void timer0_config(void) { /* ----------------------------------------------------------------------- TIMER0配置： 生成3路具有不同占空比的互补PWM信号： TIMER0CLK固定为systemcoreclock，TIMER0预分频器设置为6000，因此 TIMER0计数器时钟为20KHz。 三个占空比的计算如下： 通道0的占空比设置为25%，因此通道1N设置为75%。 通道1的占空比设置为50%，因此通道2N设置为50%。 通道2的占空比设置为75%，因此通道3N设置为25%。 ----------------------------------------------------------------------- */ timer_oc_parameter_struct timer_ocinitpara; timer_parameter_struct timer_initpara; rcu_periph_clock_enable(RCU_TIMER0); timer_deinit(TIMER0); /* initialize TIMER init parameter struct */ timer_struct_para_init(&timer_initpara); /* TIMER0 configuration */ timer_initpara.prescaler = TIMER0_PRESCALER; timer_initpara.alignedmode = TIMER_COUNTER_EDGE; timer_initpara.counterdirection = TIMER_COUNTER_UP; timer_initpara.period = TIMER0_PERIOD; timer_initpara.clockdivision = TIMER_CKDIV_DIV1; timer_initpara.repetitioncounter = 0; timer_init(TIMER0, &timer_initpara); /* initialize TIMER channel output parameter struct */ timer_channel_output_struct_para_init(&timer_ocinitpara); /* CH0, CH1 and CH2 configuration in PWM mode */ timer_ocinitpara.outputstate = TIMER_CCX_ENABLE; timer_ocinitpara.outputnstate = TIMER_CCXN_DISABLE; timer_ocinitpara.ocpolarity = TIMER_OC_POLARITY_HIGH; timer_ocinitpara.ocnpolarity = TIMER_OCN_POLARITY_HIGH; timer_ocinitpara.ocidlestate = TIMER_OC_IDLE_STATE_LOW; timer_ocinitpara.ocnidlestate = TIMER_OCN_IDLE_STATE_LOW; timer_channel_output_config(TIMER0, TIMER_CH_0, &timer_ocinitpara); timer_channel_output_config(TIMER0, TIMER_CH_1, &timer_ocinitpara); timer_channel_output_config(TIMER0, TIMER_CH_2, &timer_ocinitpara); timer_channel_output_pulse_value_config(TIMER0, TIMER_CH_0, TIMER0_CH0_PULSE); timer_channel_output_mode_config(TIMER0, TIMER_CH_0, TIMER_OC_MODE_PWM0); timer_channel_output_shadow_config(TIMER0, TIMER_CH_0, TIMER_OC_SHADOW_DISABLE); timer_channel_output_pulse_value_config(TIMER0, TIMER_CH_1, TIMER0_CH1_PULSE); timer_channel_output_mode_config(TIMER0, TIMER_CH_1, TIMER_OC_MODE_PWM0); timer_channel_output_shadow_config(TIMER0, TIMER_CH_1, TIMER_OC_SHADOW_DISABLE); timer_channel_output_pulse_value_config(TIMER0, TIMER_CH_2, TIMER0_CH2_PULSE); timer_channel_output_mode_config(TIMER0, TIMER_CH_2, TIMER_OC_MODE_PWM0); timer_channel_output_shadow_config(TIMER0, TIMER_CH_2, TIMER_OC_SHADOW_DISABLE); timer_primary_output_config(TIMER0, ENABLE); // 自动重载模式使能和启动TIMER0 timer_auto_reload_shadow_enable(TIMER0); timer_enable(TIMER0); } /** * @brief TIMER0 GPIO config */ void Timer0_init(void) { timer0_gpio_config(); timer0_config(); } /*! \brief set PWM \param[in] channel: TIMER_CH_0/TIMER_CH_1/TIMER_CH_2/TIMER_CH_3 (valid values: 0, 1, 2, 3) \param[in] pulse: PWM pulse value \param[out] none \retval none \note The channel parameter must be between 0 and 3 inclusive. */ void Set_Pwm(u16 channel, u32 palse) { if (channel <= 3) { timer_channel_output_pulse_value_config(TIMER0, channel, palse); } else { } // Ensure channel is within valid range }