When I insmod a driver, it should print a message, such as: insmod ok. However, when I insmod, there is no prompt, no error message, and no correct answer. I also cannot find my device number in proc/...
Today I built a TL714 comparator circuit, which is the simplest type of direct comparison. I have input the corresponding common-mode voltage according to the manual, and the amplitude is greater than...
I am using ILI9325, eight-bit data mode, the development board is EMSTM32V100, RS, CS, WR, RD are connected to PE0, PE1, PE2, PE3 respectively, and the eight-bit data port is connected to PD0-7; The f...
The frequency spectrum of sound ranges from approximately tens to thousands of hertz. If you can use a program to control a certain port of the microcontroller to continuously output "high" or "low" l...
This is the first time I installed this, and I downloaded more than 600 megabytes of installation files from the official website.The project displays normally even without compilation. I don't unders...