基于stm32的定时器中断应用，可产生相位差为90度的两路周期性脉冲，可用于模拟正交编码器脉冲-Stm32 timer interrupt based applications can generate a phase difference of 90 degrees two periodic pulse, can be used for analog quadrature encoder pulse

此例为正交编码器的程序，可以修改精度，用的是STM32的专用编码器接口-This example is a quadrature encoder, you can modify the accuracy, using STM32 dedicated encoder interface