As the title says, I made an ultrasonic distance measurement, but after testing it, I found that the accuracy was low and the error was large. The module I used was HC-SR04, which I bought on Taobao f...
[i=s]This post was last edited by Rambo on 2017-8-16 11:54[/i] This section talks more about Linux than Android. There are still many Android applications and the demand is also very high. So I plan t...
I am going to learn the driver of DSP video port (VP port). I first read the operating system and driver development manual to understand the working principle and program structure of the driver, and...
2.you are communicating with an external device over an I2C bus. The I2C address of the device is 0x40. list the steps you would take to write a 1 in bit 7 of a register at address 02 in the external ...
The data obtained through measurement often need to be sorted, analyzed, and calculated to obtain the measurement results. In order to reasonably express the measurement results, it is necessary to co...