I designed a scanner alarm module using the 51 single-chip microcomputer. The scanner (RS232 interface) is connected to the 51 through the MAX232. Because the MAX232 has two sets of data channels, I n
Analysis of the uboot fuel gauge driver of the RK3288 commercial display motherboard of Shizhuang Technology[color=#313131][font=宋体][size=14px]1. Add the fuel gauge fg driver to uboot:[/size][/font][/
[align=left]If you want to deeply understand Linux device drivers, you must clarify the following issues:[/align][align=left]· The relationship between applications, libraries, kernels, and drivers[/a
In order to save costs, 2407A data and program are prepared to share an external 64K memory. The hardware circuit connection is: CS = PS × DS (low active), and the address lines are connected accordin