LongJinHua · 9月14日 · 安徽

我是自学的新手,那位老师解答哈GD32f310c8 Timre15 配置单通道PWM配置哪里有问题指点哈谢谢?

void timer_config(void)
{

        // PB8 具有 TIMER15 的通道0 功能
        timer_parameter_struct Timer_ParamType;
        timer_oc_parameter_struct Timer_OC_ParamType;
       
        rcu_periph_clock_enable(RCU_GPIOB);//启用外设时钟功能
        rcu_periph_clock_enable(RCU_TIMER15);
       
       
        gpio_af_set(GPIOB,GPIO_AF_2,GPIO_PIN_8);//端口复用为TIMER15_CH0模式
       
        gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_8);
  gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_8);
  gpio_bit_set(GPIOB, GPIO_PIN_8);
       
       
        timer_internal_clock_config(TIMER15);
        timer_deinit(TIMER15);
       
        timer_channel_output_mode_config(TIMER15,TIMER_CH_0,TIMER_OC_MODE_PWM0);
        timer_auto_reload_shadow_enable(TIMER15);
       
        Timer_OC_ParamType.ocidlestate = TIMER_OC_IDLE_STATE_HIGH;//空闲时通道输出极性
        Timer_OC_ParamType.ocnidlestate = TIMER_OCN_IDLE_STATE_LOW;//空闲时互补通道输出极性
        Timer_OC_ParamType.ocnpolarity = TIMER_OCN_POLARITY_HIGH;//互补通道输出极性
        Timer_OC_ParamType.ocpolarity = TIMER_OC_POLARITY_HIGH;//通道输出极性
        Timer_OC_ParamType.outputnstate = TIMER_CCXN_DISABLE;//禁用互补通道输出
        Timer_OC_ParamType.outputstate = TIMER_CCX_ENABLE;//使能通道输出
        timer_channel_output_config(TIMER15,TIMER_CH_0,&Timer_OC_ParamType);
       
        Timer_ParamType.alignedmode = TIMER_COUNTER_EDGE;//配置为边沿对其模式
        Timer_ParamType.clockdivision = TIMER_CKDIV_DIV2;//配置死区时间和采样时钟(DTS)之间的分频系数
        Timer_ParamType.counterdirection = TIMER_COUNTER_UP;//配置计数方向为向上计数
        Timer_ParamType.period = 1000-1;//周期
        Timer_ParamType.prescaler = 72-1;//预分频
        Timer_ParamType.repetitioncounter = 1;
        timer_init(TIMER15,&Timer_ParamType);
       
        timer_channel_output_pulse_value_config(TIMER15, TIMER_CH_0, 500-1);//比较寄存器的数值
       
        timer_enable(TIMER15);
}

int main(void)
{
    int16_t i = 0;
    FlagStatus breathe_flag = SET;

    /* configure the GPIO ports */
    gpio_config();

    /* configure the TIMER peripheral */
    timer_config();

    /* configure systick */
    systick_config();

    while (1){
        /* delay a time in milliseconds */
        delay_1ms(2);
        if (SET == breathe_flag){
             i = i + 10;
        }else{
            i = i - 10;
        }
        if(500 < i){
            breathe_flag = RESET;
        }
        if(0 >= i){
            breathe_flag = SET;
        }
        /* configure TIMER channel output pulse value */
        timer_channel_output_pulse_value_config(TIMER15,TIMER_CH_0,i);
    }
}

GD32f310c8 Timre13 这样配置是可以的,

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