（2）初始化 TIMER0 ,设置 TIMER0 的预分频和周期等参数, ，在上一节定时器中断章节我们已经有讲解，这里就不详细讲解，调用的格式为 timer_initpara.prescaler = 5999; timer_initpara.alignedmode = TIMER_COUNTER_EDGE; timer_initpara.counterdirection = TIMER_COUNTER_UP; timer_initpara.period = 4000; ...
(2)初始化 TIMER0 ,设置 TIMER0 的预分频和周期等参数, ,在上一节定时器中断章节我们已经有讲解,这里就不详细讲解,调用的格式为 timer_initpara.prescaler = 5999; timer_initpara.alignedmode = TIMER_COUNTER_EDGE; timer_initpara.counterdirection = TIMER_COUNTER_UP; timer_initpara.period = 4000; time...
timer_struct_para_init(&Timer_initpara);Timer_initpara.alignedmode = TIMER_COUNTER_EDGE;Timer_...
(2)初始化 TIMER0 ,设置 TIMER0 的预分频和周期等参数, ,在上一节定时器中断章节我们已经有讲解,这里就不详细讲解,调用的格式为 timer_initpara.prescaler = 5999; timer_initpara.alignedmode = TIMER_COUNTER_EDGE; timer_initpara.counterdirection = TIMER_COUNTER_UP; timer_initpara.period = 4000; time...
这两个基本定时器使用的时钟源都是CK_TIMER驱动,时钟源经过 TIMERx_PSC预分频器输入至脉冲计数器TIMERx_CNT,基本定时器只能工作在向上计数模式,在重载寄存器TIMERx_CAR中保存的是定时器的溢出值。 工作时,脉冲计数器TIMERx_CNT由时钟触发进行计数,当 TIMx_CNT 的计数值 X 等于重载寄存器TIMERx_CAR中保存的数值 N ...
timer_initpara.alignedmode = TIMER_COUNTER_EDGE;timer_initpara.counterdirection = TIMER_COUNTER...
1) TIMER1时钟使能。 TIMER1是挂载在 APB1 之下,所以我们通过 APB1 总线下的使能使能函数来使能 TIMER1。调用的函数是: rcu_periph_clock_enable(RCU_TIMER1); 2) 初始化定时器参数,设置自动重装值,分频系数,计数方式等。 在库函数中,定时器的初始化参数是通过初始化函数 timer_init实现的: ...
timer_initpara.alignedmode = TIMER_COUNTER_EDGE; timer_initpara.counterdirection = TIMER_COUNTER_UP; timer_initpara.period = 4000-1; //800ms timer_initpara.clockdivision = TIMER_CKDIV_DIV1; timer_init(TIMER4, &timer_initpara); 对于定时器定时周期的计算,设 TIMER4 的经过总线分频后得到的时钟...
timer_parameter_struct timer_initpara = {0}; rcu_periph_clock_enable(RCU_TIMER0); timer_deinit(TIMER0); timer_initpara.prescaler = (108 - 1); // 预分频:108MHz / 108 = 1MHz timer_initpara.alignedmode = TIMER_COUNTER_EDGE; // 边沿对齐计数 ...
timer_initpara.prescaler = 200-1设置定时器预分频系数为200,则定时器工作频率为200MHz/200 = 1MHz;timer_initpara.alignedmode = TIMER_COUNTER_EDGE设置上升沿计数模式;timer_initpara.counterdirection = TIMER_COUNTER_UP设置向上计数模式;timer_initpara.period = 1000000设置向上计数上限值为100000,即计数周期...