Except for the part of the program using the aclk timer, the other work is normal. The oscilloscope shows that there is a high level but no 32k signal. The passive crystal oscillator (12.5pF) is direc...
There are a lot of exhibitors this time, including brand exhibitors and individual exhibitors, occupying 4 exhibition halls of the New International Expo Center.
This exhibition uses the exhibitors' w...