Video Tutorial: Http://pan.baidu.com/s/1pJwxUfL
Introduction of embedded research and development process
? PCB Introduction to the development process
– Scheme, schematic ( Web meter )
– layoutProject Master (Gerber file)
– PCB Board Manufacturing Board (bare board PCB)
– Welding (Demo Board)
– Hardware Test
– Stability test (requires software project engineer)
– Mass production
– The drive's work is carried out after the programme has been selected. After mass production, it is possible that a
Direct Update upgrade
Use of schematic diagrams
? Use of schematic diagrams
– Module
– Component designator
– Network designator
Module
? You have to know the module after you get the schematics.
– Combination of components with a certain function
? Understanding the functionality of the module
– With power. LED , MAX3232CSE , 74ALVC164245DGG For example Introduction
? Positioning of the surrounding small components via the chip of the function module
– In most cases, the small components around the module are placed around the module chip
Component designator
? Component designator, unique identifier of the element
– Schematic elements are matched by component designator and PCB hardware one by one
? Identify and find the function of the module by marking
– To U22,U12,U9. U8. U10 as an example
? PCB additional silk screen hints for different features
– such as key Back,sllep,vol+,vol-,home,reset,power
– such as the Camera,jtag,gpio,wifi,uart+keypad+gpsof the interface terminals. UART
– such as sound card interface MIC,HOME
– such as graphics interface LVDS-LCD,HDMI,RGB-LCD,LVDS-LCD
Network label
? Network designator, unique identifier of the network
– Different chip interface connectors are connected via the network designator
? Find the network designator on the module or on the chip, and then "find it on both sides"
– Find the end of the signal (master chip)
– Find the port where the board is finally output
? by Network label
– Example LED,buzzer (beep). AD. UART. Graphics, etc.
Some points to note
? The Development Board has a different version number. Whichever you get on your hands. Different development boards or side-
Case, the method of learning is the same.
The point to be grasped is the same.
? The habits of different project architects can lead to a slightly different schematic diagram, but the general picture is
The same.
Schindler 4412 Development Board Linux driver Tutorials/hardware knowledge and schematic usage