请问各位大神，F303有定时器互联输出PWM的相关文章资源吗？
第一次使用使用这个功能，代码无法输出第二路和第三路PWM
/*
电磁阀，串气阀 gpio初始化
*/
void timer7_timer4_timer1_gpio_init(void){
rcu_periph_clock_enable(RCU_GPIOA);
rcu_periph_clock_enable(RCU_GPIOC);
gpio_init(GPIOA, GPIO_MODE_AF_PP,GPIO_OSPEED_2MHZ,Timer1_ch1);
gpio_init(GPIOA, GPIO_MODE_AF_PP,GPIO_OSPEED_2MHZ,Timer4_ch2);
gpio_init(GPIOC, GPIO_MODE_AF_PP,GPIO_OSPEED_2MHZ,Timer7_ch0);
}
/*
串气阀, 电磁阀1,电磁阀2初始化
串气阀频率：
*/
void timer7_timer4_timer1_config(void){
timer7_timer4_timer1_gpio_init();
timer_oc_parameter_struct timer_ocinitpara; //通道输出结构体
timer_parameter_struct timer_initpara;
rcu_periph_clock_enable(RCU_TIMER1);
rcu_periph_clock_enable(RCU_TIMER4);
rcu_periph_clock_enable(RCU_TIMER7);
/************** Timer7 ****************/
timer_deinit(TIMER7);
timer_struct_para_init(&timer_initpara);
timer_initpara.prescaler= 60000-1;
timer_initpara.alignedmode=TIMER_COUNTER_EDGE;
timer_initpara.clockdivision=TIMER_CKDIV_DIV1;
timer_initpara.counterdirection=TIMER_COUNTER_UP;
timer_initpara.period = (2000*6.7-1);
timer_initpara.repetitioncounter=0;
timer_init(TIMER7,&timer_initpara);
// 初始化外设TIMER通道输出结构体参数
timer_channel_output_struct_para_init(&timer_ocinitpara);
timer_ocinitpara.ocidlestate=TIMER_OC_IDLE_STATE_LOW; //空闲状态下为低电平
timer_ocinitpara.ocnidlestate=TIMER_OCN_IDLE_STATE_LOW;//互补通道空闲状态下为低
timer_ocinitpara.ocpolarity=TIMER_OC_POLARITY_HIGH; //通道输出极性
timer_ocinitpara.ocnpolarity=TIMER_OCN_POLARITY_HIGH; //互补通道输出极性
timer_ocinitpara.outputnstate=TIMER_CCXN_DISABLE; //互补通道输出状态
timer_ocinitpara.outputstate = TIMER_CCX_ENABLE; //通道输出状态
//外设TIMERx的通道输出配置
timer_channel_output_config(TIMER7, TIMER_CH_0, &timer_ocinitpara);
//配置外设TIMERx的通道输出比较值
timer_channel_output_pulse_value_config(TIMER7, TIMER_CH_0, 2000*2);
// 配置外设TIMERx通道输出比较模式
timer_channel_output_mode_config(TIMER7, TIMER_CH_0, TIMER_OC_MODE_PWM0);
//配置TIMERx通道输出比较影子寄存器功能
timer_channel_output_shadow_config(TIMER7, TIMER_CH_0, TIMER_OC_SHADOW_DISABLE);
// TIMERx自动重载影子使能
timer_auto_reload_shadow_enable(TIMER7);
// TIMERx主从模式配置
timer_master_slave_mode_config(TIMER7, TIMER_MASTER_SLAVE_MODE_ENABLE);
// 选择TIMERx主模式输出触发
timer_master_output_trigger_source_select(TIMER7, TIMER_TRI_OUT_SRC_UPDATE);
// 所有的通道输出使能
timer_primary_output_config(TIMER7, ENABLE);
//timer_auto_reload_shadow_enable(TIMER7);
/************** Timer1 ****************/
timer_deinit(TIMER1);
timer_struct_para_init(&timer_initpara);
timer_initpara.prescaler = 60000-1;
timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection = TIMER_COUNTER_UP;
timer_initpara.period = 13300;
timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
timer_initpara.repetitioncounter = 0;
timer_init(TIMER1, &timer_initpara);
timer_channel_output_struct_para_init(&timer_ocinitpara);
timer_ocinitpara.ocidlestate=TIMER_OC_IDLE_STATE_LOW; //空闲状态下为低电平
timer_ocinitpara.ocnidlestate=TIMER_OCN_IDLE_STATE_LOW;//互补通道空闲状态下为低
timer_ocinitpara.ocpolarity=TIMER_OC_POLARITY_HIGH; //通道输出极性
timer_ocinitpara.ocnpolarity=TIMER_OCN_POLARITY_HIGH; //互补通道输出极性
timer_ocinitpara.outputnstate=TIMER_CCXN_DISABLE; //互补通道输出状态
timer_ocinitpara.outputstate = TIMER_CCX_ENABLE; //通道输出状态
timer_channel_output_config(TIMER1, TIMER_CH_1, &timer_ocinitpara);
timer_channel_output_pulse_value_config(TIMER1, TIMER_CH_1, 7000);
timer_channel_output_mode_config(TIMER1, TIMER_CH_1, TIMER_OC_MODE_PWM0);
timer_channel_output_shadow_config(TIMER1, TIMER_CH_1, TIMER_OC_SHADOW_DISABLE);
timer_auto_reload_shadow_enable(TIMER1);
/* 从模式选择:外部时钟模式0 */
timer_slave_mode_select(TIMER1, TIMER_SLAVE_MODE_EXTERNAL0);
/* 选择定时器输入触发源:内部触发2(ITI2) */
timer_input_trigger_source_select(TIMER1, TIMER_SMCFG_TRGSEL_ITI2);
/* 选择主从模式 */
timer_master_slave_mode_config(TIMER1, TIMER_MASTER_SLAVE_MODE_ENABLE);
/* 使用TIMER2更新事件作为触发器输出 */
timer_master_output_trigger_source_select(TIMER1, TIMER_TRI_OUT_SRC_UPDATE);
/************** Timer4 ****************/
timer_deinit(TIMER4);
timer_struct_para_init(&timer_initpara);
timer_initpara.prescaler = 0;
timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection = TIMER_COUNTER_UP;
timer_initpara.period = 3;
timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
timer_initpara.repetitioncounter = 0;
timer_init(TIMER4, &timer_initpara);
timer_channel_output_struct_para_init(&timer_ocinitpara);
timer_ocinitpara.ocidlestate=TIMER_OC_IDLE_STATE_LOW; //空闲状态下为低电平
timer_ocinitpara.ocnidlestate=TIMER_OCN_IDLE_STATE_LOW;//互补通道空闲状态下为低
timer_ocinitpara.ocpolarity=TIMER_OC_POLARITY_HIGH; //通道输出极性
timer_ocinitpara.ocnpolarity=TIMER_OCN_POLARITY_HIGH; //互补通道输出极性
timer_ocinitpara.outputnstate=TIMER_CCXN_DISABLE; //互补通道输出状态
timer_ocinitpara.outputstate = TIMER_CCX_ENABLE; //通道输出状态
timer_channel_output_config(TIMER4, TIMER_CH_2, &timer_ocinitpara);
timer_channel_output_pulse_value_config(TIMER4, TIMER_CH_2, 2);
timer_channel_output_mode_config(TIMER4, TIMER_CH_2, TIMER_OC_MODE_PWM0);
timer_channel_output_shadow_config(TIMER4, TIMER_CH_2, TIMER_OC_SHADOW_DISABLE);
timer_auto_reload_shadow_enable(TIMER4);
timer_primary_output_config(TIMER4, ENABLE);
/* 从模式选择:外部时钟模式0 */
timer_slave_mode_select(TIMER4, TIMER_SLAVE_MODE_EXTERNAL0);
/* 选择定时器输入触发源:内部触发2(ITI2) */
timer_input_trigger_source_select(TIMER4, TIMER_SMCFG_TRGSEL_ITI2);
/* TIMER 使能 */
timer_enable(TIMER7);
timer_enable(TIMER2);
timer_enable(TIMER4); |
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