I found a source code for formatting an SD card on the Internet, but it always fails when executing DismountPartition. What does this sentence do? I don't quite understand the English.
I bought a 5V stepper motor from Taobao. I also bought a ULN2003 driver module. I thought 3V could not drive the 5V ULN2003 module. I tried it and it worked. This module is a Darlington tube. It works
The composition of the dome camera is as shown below: main circuit board, lens and lens accessories, mounting bracket, protective cover and housing;Step 1: Install the lens assembly on the main board
There is an INT_USBD interrupt in the interrupt control of s3c2440 (s3c2410 s3c2443, etc.). Under normal circumstances, this interrupt will be generated after USB is inserted. What is the basis for th