Introduction - If you have any usage issues, please Google them yourself
1. After the microcontroller power utility lights lit A (non-microcontroller development board comes with power light) (5 points) 2. A flashing lamp, period 1S (0.5S 0.5S light off) ( 10.) 3. Set button, so by pressing a button set lights flashing cycle (T is 0.5S ~ 3S adjustable, adjustable precision is 0.1S, bright and off times are 0.5T) (25 points) 4 Write a program, the lamp B by a PWM wave control, becomes respiration lamp (period T is 2.5S, the duty cycle is 0 to 100 ) (20 points) 5. Write a program that can be set through the key breathing light cycle (period T 1S ~ 4S adjustable, adjustable precision is 0.1S) (20 points) 6.* Additional requirements: through digital tube or LCD human-computer interaction, that is, when the key is set by light cycle thereon It displays the current settings of the cycle time