以1ms的速率通过gpio采485接口数据-Mining 485 interface data to the a 1ms rate of through gpio

stm32f103x SysTick 定时1ms

.net下的高精度定时器类设计及WPF测试界面。可由用户设置优先级，最高可实现<1ms的定时精度。-Precision timer class design and test interface under .net . Users can set the priority, the highest achievable <1ms timing accuracy.