fj200821的专栏

1.配置回调 根据名字“cpu_usage_timer” 配置回调“cpu_usage_timer_handler” osTimerDef(cpu_usage_timer, cpu_usage_timer_handler); 2.创建定时器 osTimerCreate(osTimer(cpu_usage_timer), osTimerPeriodic, NULL); 3.使用定时器 osTimerStart(cpu_usage_timer_id, CPU_USAGE_TIMER_TMO_VALUE);