PD charging protocol decoy based on STM32 control

The design content
       implements the functions mentioned in the description. Mainly because it was my first time to use the C6T6 chip, and I modified it using the library function of Punctual Atom (from RCT6). I encountered a lot of problems. Fortunately, the source code was usable in the end.
Note:
       The maximum input voltage value is 20V, and the capacitor I bought myself has a maximum withstand voltage of only 10V, so when the output voltage is 15V or 20V, it will automatically hang up. So I limited the maximum output voltage in the program, which can be modified through the program. 4 corresponds to the maximum 15V, and 5 corresponds to the maximum 20V.        Pictures of the normal output
of the demonstration effect :        Pictures of the voltage displayed on the serial port:        Pictures of automatic flashback at 15V: Other attachments The program source code is provided in the attachment.