Introduction - If you have any usage issues, please Google them yourself
First speed light water design (I/O+ external interrupts)
1, press the key S1 control LED1~LED4, LED10~LED13 serial, press S2 to suspend running water, then press the S2, continued to flow the paused location
2, the speed of light water is divided into 4 levels (1,2,3,4), press S3 control acceleration, press S4 control, accelerated Supreme plus 4, slowed down the lowest down to 1.
(Note: timer water, S2 control timer control TR0,S3 and S4 control timer interrupt in the control variables)