Upload an op amp circuit diagram, let's discuss the working principle of this circuit. The CT passes through 220V AC, what is the role of Vadd pull-up? This should be an open-loop input inverting ampl
I want to write the serial number to a high-end address of the flash, such as 0xFFFF, and read this address every time the serial number is needed. But in this case, if the sector where this address i
1. Principle of security door The crystal oscillator generates a 3.5-4.95M sinusoidal oscillation, which is divided into a 7.8K sinusoidal wave by a frequency divider. After the power is amplified by
The USB keyboard driver should be selected in menuconfig. My problem is that there is no input in /dev/. I have to manually mkdir /dev/input and then mknod /dev/input/kbd c 13 64. The problem is that
Through the experiment, I have some questions about the task scheduling of ucos, and hope to get your advice! The questions are as follows: Two tasks are created: OSTaskCreate( taskLED1, (void *)0, &G