Schindler 4412 Development Board Linux driver Tutorials/hardware knowledge and schematic usage

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