Recently, due to project needs, I have to do power management on 2440. I have never done it before, so many problems have arisen. The main problems that occurred in the process and their solutions are
I am programming the at89s51 series microcontroller in the system. I don't know why I can't program even a single byte. Can anyone tell me what might be wrong? The programming sequence is based on the
I want to use 123G LaunchPad to make a breathing light, and I found a program (downloaded from the community) that can adjust the duty cycle of the PWM wave from 0.1% to 100%. However, after debugging
As shown in the figure, I want to make an enable control, count when enabled, and not count when not enabled. The program and online are as shown in the figure, but the online figure is different from
I use P89V51RD2 to develop a product. Because of the baud rate of 38400, I choose a 22.1184MHZ crystal oscillator. Set SMOD=1, TH1=253. The communication is normal. Because three 74HC595 cascades are