[问题讨论] GD32F350定时器14与定时器2有什么不同？

tianjiu 2018-11-17 15:05 楼主

用Timer2产生PWM正常，但用类似的程序，Timer14没有PWM输出。void timer2_config(void)
{
   timer_oc_parameter_struct timer_ocintpara;
timer_parameter_struct timer_initpara;

rcu_periph_clock_enable(RCU_TIMER2);

timer_deinit(TIMER2);

timer_initpara.prescaler       = 539;

timer_initpara.alignedmode    = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection  = TIMER_COUNTER_UP;
timer_initpara.period          = 199;
timer_initpara.clockdivision    = TIMER_CKDIV_DIV1;
timer_initpara.repetitioncounter = 0;
timer_init(TIMER2, &timer_initpara);

/* CH1, CH2 and CH3 configuration in PWM mode0 */
timer_ocintpara.ocpolarity  = TIMER_OC_POLARITY_HIGH;
timer_ocintpara.outputstate = TIMER_CCX_ENABLE;

timer_channel_output_config(TIMER2, TIMER_CH_0, &timer_ocintpara);

timer_channel_output_pulse_value_config(TIMER2, TIMER_CH_0, 100);
timer_channel_output_mode_config(TIMER2, TIMER_CH_0, TIMER_OC_MODE_PWM0);
timer_channel_output_shadow_config(TIMER2, TIMER_CH_0, TIMER_OC_SHADOW_DISABLE);

/* auto-reload preload enable */
timer_auto_reload_shadow_enable(TIMER2);
/* auto-reload preload enable */
timer_enable(TIMER2);
}

科技飞速发展，学习永无止境。变压器有载调压，一小时万次切换。

回复评论（3）

沙发 tianjiu

void timer14_config(void)
{
timer_oc_parameter_struct timer_ocintpara;
timer_parameter_struct timer_initpara;

rcu_periph_clock_enable(RCU_TIMER14);

timer_deinit(TIMER14);

timer_initpara.prescaler       = 539;

timer_initpara.alignedmode    = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection  = TIMER_COUNTER_UP;
timer_initpara.period          = 199;
timer_initpara.clockdivision    = TIMER_CKDIV_DIV1;
timer_initpara.repetitioncounter = 0;
timer_init(TIMER14, &timer_initpara);

/* CH1, CH2 and CH3 configuration in PWM mode0 */
timer_ocintpara.ocpolarity  = TIMER_OC_POLARITY_HIGH;
timer_ocintpara.outputstate = TIMER_CCX_ENABLE;

timer_channel_output_config(TIMER14, TIMER_CH_0, &timer_ocintpara);

timer_channel_output_pulse_value_config(TIMER14, TIMER_CH_0, 100);
timer_channel_output_mode_config(TIMER14, TIMER_CH_0, TIMER_OC_MODE_PWM0);
timer_channel_output_shadow_config(TIMER14, TIMER_CH_0, TIMER_OC_SHADOW_DISABLE);

/* auto-reload preload enable */
timer_auto_reload_shadow_enable(TIMER14);
/* auto-reload preload enable */
timer_enable(TIMER14);
}

科技飞速发展，学习永无止境。变压器有载调压，一小时万次切换。

点赞 2018-11-17 15:07

板凳 tianjiu

void gpio_config(void)
{
/*Configure PB3 PB10 PB11(TIMER1 CH1 CH2 CH3) as alternate function*/
gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_3);
gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_3);

gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_10);
gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_10);

gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_11);
gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_11);

gpio_af_set(GPIOB, GPIO_AF_2, GPIO_PIN_3);
gpio_af_set(GPIOB, GPIO_AF_2, GPIO_PIN_10);
gpio_af_set(GPIOB, GPIO_AF_2, GPIO_PIN_11);

//配置 PB4(TIMER2 CH0) 为复用功能
gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_4);
gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_4);

gpio_af_set(GPIOB, GPIO_AF_1, GPIO_PIN_4);

//配置 PB14(TIMER14 CH0) 为复用功能
gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_14);
gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_14);

gpio_af_set(GPIOB, GPIO_AF_1, GPIO_PIN_14);
}

科技飞速发展，学习永无止境。变压器有载调压，一小时万次切换。

点赞 2018-11-17 15:08