"Resource sharing" for iTOP-4412 Development Board Platform

The development Board is a relatively complex electronic system, please be patient and assemble in accordance with the instructions in this chapter, so as not to cause unnecessary loss.

It is best to use the cable provided by Schindler, as some parts are specifically customized and may be purchased on the market

Connector lines and parts do not match, unauthorized use of the wiring or parts purchased on the market may damage the Development Board.

Before fully figuring out the Development Board interface signal definition, if the part is not mentioned in this document and you purchase it on the market

Buy parts compatible, do not use their own purchase of wiring and other components, if in doubt, please consult our technical staff.

Assembly of Development Boards

Console consoleserial Port

Use the serial cable to connect the development Board COM3 to the pc 's serial port, if the pc or notebook does not have a serial port, it is necessary

A USB to serial port device.

Note: Plug and unplug the serial port, in case of a power outage, in order to avoid the presence of Plug and unplug device damage.

please refer to "installation and use of3.1 HyperTerminal" for the operating software of the serial port on the PC .

Exynos 4412 A total of four serial ports, wherein CON3 is the debug serial port as the system, as shown in:

The connection of the screen

In terms of appearance, the Development Board has 2 hdmi interface, in fact, only one can be received on the HDMI monitor. As

As shown:

The larger hdmi-a Interface (the interface within the red box) can only be connected to the 7 - inch screen provided by Schindler

or 9.7 -inch screen, which has 5V(or 3.3V) Power, absolutely cannot receive the HDMI Monitor. Use Schindler as a reference

HDMI cable can be anti-stay, will not be wrong, before the user figure out the signal, do not use their own purchase

HDMI Cable!

The smaller HDMI(the interface inside the brown box) is the standard hdmi-c Interface (not an international standard

, but in a lot of electrical equipment are used, belonging to the Japanese SONY Company defined an HDMI interface, specifically

To Baidu), we recommend the use of our C Port to a port of the HDMI Cable Connection.

iTOP-4412 Elite Edition In addition to using the HDMI cable to connect the screen, but also through the user's usual use of the soft line

Way to connect, as shown in:

The LCD interface signal within the two red squares is a custom interface that can only be connected to the provided screen, and

Other companies ' screens are not guaranteed to be fully compatible, so we must pay attention to this!

Connection of resistive screen (4.3 inch screen)

The iTOP-4412 Elite version supports 4.3 -inch resistive screens, as shown in the following ways:

The interface of the 4.3 inch screen is clamshell, and the soft line is connected with a side facing down with a metal contact point.

Capacitive screen Connection (7 -inch screen and 9.7 - inch screen)

The iTOP-4412 Elite version can support a 7 - inch or 9.7 -inch capacitive screen as shown:

The 7- inch and 9.7 -inch screens can also be connected via a soft-line cable, as shown in the interface:

Monitor (HDMI) connection

the HDMI interface looks like this:

Using the HDMI cable provided by our company, connect the backplane hdmi-c interface and the hdmi-a on the monitor , remind again

Be sure to use the HDMI cable provided by our company !

If you use a computer monitor with an HDMI interface, there is no touch function, so you need to connect a USB Mouse and

Keyboard. The USB port on the backplane is the same as the computer, and the kernel has its own driver. At the same time, if we purchase the

LCD screen, you can also connect USB Mouse and keyboard, touch and mouse keyboard will be effective at the same time.

Connection of the power supply

Use the board's 5V power supply to connect to the power outlet of the Development Board . As shown in the following:

Startup mode setting (dial switch)

The user can select the starting mode by dialing the switch, note that the first use do not arbitrarily change the dialing switch settings, dial

After the move must pay attention to recovery, if the improper setting will cause the system to fail to boot, the dial switch as shown:

Elite Edition is a 4 -key dial switch, according to the location, from the top to the next number is 4,3,2,1. Its

The 3 and 4 are used to select the screen,and1 and 2 are used to select the startup mode. According to the placement location, dial code

Switch dial to the left is 1, dial to the right is 0.

Select the startup mode setting as shown in:

Select the settings for the support screen as shown in:

Uboot mode and file system mode

Uboot Mode

After confirming the power supply, serial port and other connections, press the SWITCH button on the Development Board to start the Development Board, then open

the LED light next to POWER on the hair board is lit and can be seen on the PC 's serial port, similar to figure 2-3.2 . The system boot shown in the

The information that is moving. Figure 2-3.1, is the u-boot boot information, read the process of the second if any value, will enter the uboot mode

This mode is used in the fourth chapter to explain the system burn-write method.

In order to distinguish it from Ubuntu,Win7,XP command line, in the back of the document, we unified the "in HyperTerminal

The "process of entering commands in the command line" is called "entering the uboot mode of HyperTerminal and entering commands".

The kernel boot process, as shown in 2-3.2 :

File system mode

Starting the Development Board, you can see the system boot information similar to Figure 2-5.1 on the PC's HyperTerminal.

In the Development Board boot process, if the user does not do any operation and control, the final HyperTerminal will appear as 2-3.3

The interface. If you see the contents of the red box, it means that HyperTerminal has entered the Android file system module

Expression

When HyperTerminal enters file system mode and enters enter key into the string, a red box appears in the 2-3.4

command-line terminal in the.

In order to be with Ubuntu,Win7,XP and 2.3.1 section of the uboot the command line of the schema is differentiated after the document

The process of "entering commands in the command line of HyperTerminal" is called "File system into HyperTerminal

mode, enter command ". In file system mode, you can support a subset of common Linux commands.

In addition, in the "linux-qt system", "Ubuntu system" and "minimum Linux file System", you can

To enter the file system mode, input the command, the Development Board to operate.

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"Resource sharing" for iTOP-4412 Development Board Platform