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HiReg User Guide
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Issue |
04 |
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Date |
2015-04-30 |
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Copyright © HiSilicon Technologies Co., Ltd. 2015. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of HiSilicon Technologies Co., Ltd.
Trademarks and Permissions
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice The purchased products, services and features are stipulated by the contract made between HiSilicon and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied. |
HiSilicon Technologies Co., Ltd. |
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Address: |
Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China |
Website: |
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Email: |
Purpose
This document describes how to use the HiReg tool.
Related Versions
The following table lists the product versions related to this document.
Product Name |
Version |
Hi3751 |
V800 |
Hi3716C |
V100 |
Hi3716M |
V100 |
Hi3716C |
V2XX |
Hi3719C |
V1XX |
Hi3718C |
V1XX |
Hi3719M |
V1XX |
Hi3718M |
V1XX |
Hi3716M |
V4XX |
Hi3716M |
V3XX |
Hi3798M |
V1XX |
Hi3796M |
V1XX |
Hi3110E |
V5XX |
Hi3798C |
V2XX |
Intended Audience
This document is intended for:
l Technical support engineers
l Board hardware development engineers
Change History
Changes between document issues are cumulative. Therefore, the latest document issue contains all changes made in previous issues.
Issue 04 (2015-04-30)
This issue is the fourth official release, which incorporates the following changes:
Hi3798C V200, Hi3716M V420, and Hi3716M V410 are supported.
Issue 03 (2015-03-10)
This issue is the third official release, which incorporates the following changes:
Hi3110E V500 is supported.
Issue 02 (2014-10-31)
This issue is the second official release, which incorporates the following changes:
Hi3796M V100 and Hi3798M V100 are supported.
Issue 01 (2014-09-05)
This issue is the first official release, which incorporates the following changes:
Chapter 2 GUI and Basic Functions
Section 2.3 is modified.
Issue 00B01 (2014-05-15)
This issue is the first draft release.
Contents
3.3.2 Search Area and Bit Editor
3.7 Register Debugging Instance
5.2 Switching to the U-Boot Mode
5.3 Displaying the Mode Switch Dialog Box.
6.1 What Do I Do If the Serial Port Cannot Be Connected?
6.2 What Do I Do If the Network Port Cannot Be Connected?
6.3 What Do I Do If the Selected Chip Model and Actual Chip Model Are Mismatched?
Figures
Figure 1-1 Configuring the KO command
Figure 2-1 Main GUI for debugging registers
Figure 2-3 Opening the HiReg perspective
Figure 2-7 Calculating the PLL divider parameters
Figure 3-2 Querying a register
Figure 3-5 Chip model detection
Figure 3-8 Register Editor toolbar
Figure 3-9 Search area of Register Editor
Figure 3-10 Register bit editor
Figure 3-12 Toolbar of the I2C Editor
Figure 3-13 I2C device control area
Figure 3-14 Register bit editor
Figure 3-16 Register Comparison view
Figure 3-17 Setting the time interval
Figure 3-18 Creating a serial connection
Figure 3-19 Creating a telnet connection
Figure 3-20 Querying and adding registers, and viewing register description information
Figure 3-21 Editing, reading, and writing register data
Figure 3-22 Comparing register data
Figure 3-23 Setting the time interval
Figure 4-2 Toolbar of the memory view
Figure 4-3 Data definition area of the memory view
Figure 4-6 Memory Comparison view
Figure 4-7 Toolbar of the Memory Comparison view
Figure 4-8 Memory comparison (inconsistency)
Figure 4-9 Memory comparison (the same)
Figure 5-1 Switching to the U-boot mode
Figure 5-2 Preferences dialog box
The HiReg is a tool for debugging HiSilicon chip registers, inter-integrated circuit (I2C) registers, and DDR data. After the HiReg is connected to a board over the serial port or network port, the following functions are supported:
l Reading or writing a single data segment
l Reading or writing data segments in batches
l Reading data periodically; Recording data.
Before using the HiReg, do as follows:
l Install the regtool on the board. The latest version is reg-tools-1.0.0.
l Install the latest Btools on the board. The latest version is ver0.0.1_2013018.
The KO command is provided by default. You can configure the KO command in the Preferences dialog box shown in Figure 1-1.
Figure 1-1 Configuring the KO command
This chapter describes the main GUI of the HiReg, HiReg perspective, HiReg toolbar, and basic functions.
This document uses the Hi3716C V100 board as an example. The description is similar for other chip boards.
Figure 2-1 shows the main GUI for debugging registers after the HiReg connects to the Hi3716C V100 board over the serial port.
Figure 2-1 Main GUI for debugging registers
In the Welcome wizard of the HiTool, click HiReg, as shown in Figure 2-2.
You can also click or choose Window > Open
Perspective > Other, as shown in Figure 2-3.
Figure 2-3 Opening the HiReg perspective
In the displayed Open Perspective dialog box, click HiReg and OK.
Then the HiReg perspective shown in Figure 2-5 is displayed.
Figure 2-6 shows the HiReg toolbar.
The following describes the icons on the HiReg toolbar:
l
− Function: connection manager
− Description: The icons are used to configure connections.
l
− Function: connection icon
− Description: If the icon becomes green, a connection is established.
l
− Function: disconnection icon
− Function: If the icon becomes red, a connection is established; if the icon is dimmed, the connection is ended.
l
− Function: terminal tool
− Description: Clicking this icon opens the Terminal window.
l
− Function: TFTP tool
− Description: Clicking this icon opens the TFTP tool view.
l
− Function: importing data sheets
− Description: The files to be imported must be in .zip format; otherwise, files fail to be imported.
l
− Function: calculating the PLL divider parameters
− Description: Select a PLL pin, enter the expected output frequency, and click Calculate Parameter. The integral divider parameters for PLL configuration registers (including postdiv1, postdiv2, refdiv, and fbdiv) and the decimal divider parameter frac are obtained. If the entered frequency is an integer, frac is 0. You can also enter a frequency and some divider parameters and click Calculate Parameter to obtain other divider parameters; or you can enter all divider parameters and click Calculate Frequency to obtain the output frequency of the PLL pin.
Figure 2-7 Calculating the PLL divider parameters
l
− Function: running the memory clear command that is similar to the Himc command
− Description: Clicking this icon opens the window for running the memory clear command.
l
− Function: running a script
− Description: Clicking this icon parses and runs a script file.
A script file must meet the following requirements:
− The comment line starts with #.
− A line has only one statement.
− The executable statement in each line is the command supported by the board. The executable statement must start with himd, himd.l, himm, himc, hier, or hiew; otherwise, the statement is an invalid command.
− The HiReg sends a command to the board directly without parsing it. The extension name .data of the script file is recommended.
See the following example:
#only for test
himd 0x80000000 0x4
himd.l 0x80000000 0x4
#end
l
− Function: memory view
− Description: Clicking this icon opens the Memory View window.
The HiReg can be used to debug chip registers. It has the following functions:
l Supports two connection modes: serial port connection and network port connection.
l Detects the chip model.
The function of debugging HiReg registers is available only when the model of the chip on the board that matches the chip model configured in the HiTool is connected.
l Displays the structure of chip registers.
Multiple register views can be added for editing and comparing data blocks of various registers.
l Reads and writes to registers.
One or more registers can be read or written at a time, and registers can be read periodically.
l Views, filters, and edits register data.
l Exports, imports, and compares register data.
Memory data can be imported, exported, or compared.
l Integrates register manuals.
l Supports the console output.
As shown in Figure 3-1, the HiReg Explorer perspective is divided into two parts:
l Register query area
l Register list area
Figure 3-2 shows the Search group box for querying a register.
Figure 3-2 Querying a register
A register can be queried in either of the following two ways:
l By address
Enter a hexadecimal address in Address(Hex) and press Enter. If the register with the entered address exists, it is added to the register list in Register Editor; if the register does not exist, an unknown register is constructed and then added to the register list in Register Editor.
l By name
Enter a register name in Name and press Enter. If the register with the entered name exists, it is added to the register list in Register Editor; if the register does not exist, the original register list is displayed.
The following describes the register list area:
l Register list
The structure of a complete register list is as follows: Chip > Module Group > Module > Register Group > Register.
l Operations
− Double-click operations
Chip node: Double-clicking this node has no effect.
Module Group, Module, or Register Group node: Double-clicking any node adds all registers under the node to Register Editor.
Register node: Double-clicking this node adds the register to Register Editor.
− Shortcut menu
No matter whether you add registers by choosing Add or Add All Chip from the shortcut menu, a register can be added only once. That is, registers are unique in the register list.
l Add: Adds all registers under the current node to Register Editor.
l Add All Chip: Adds all registers of the current chip to Register Editor.
After a board is connected, the HiReg automatically detects whether the model of the chip on the board is consistent with the configured chip model.
l If yes, a tree structure is displayed in HiReg Explorer, and you can add registers to Register Editor to read or write to them.
l If no, a message is displayed in HiReg Explorer, indicating that the chip model mismatches, as shown in Figure 3-5. In this case, choose Device > Switch Device, select a correct chip model, and try again. See Figure 3-6.
Figure 3-5 Chip model detection
Figure 3-7z shows Register Editor.
Figure 3-8 shows the toolbar of Register Editor.
Figure 3-8 Register Editor toolbar
The following describes the icons on the toolbar:
l
− Function: reading data
− Description: Reads data of all registers in the editor from the device and updates the data to the GUI.
l
− Function: writing data
− Description: Writes data of all registers with the write property in the editor to the device.
l
− Function: setting the automatic read task
− Description: Starts/Stops the automatic read task.
l
− Function: importing data
− Description: Imports register data from the register data file to the editor.
− Function: exporting data
− Description: Exports data of all registers in the editor to a file.
l
− Function: exporting modified registers
− Description: Exports modified registers from the memory to a file.
l
− Function: register comparator
− Description: Opens the file device comparator.
l
− Function: removing registers
− Description: Removes all registers from the editor.
Figure 3-9 shows the search area of Register Editor.
Figure 3-9 Search area of Register Editor
l By name: Enters a name in the Locate text box.
l By address: Enters an address in the Locate text box.
l Show all: Displays data of all registers.
l Only show changed: Displays only modified registers.
Figure 3-10 Register bit editor
The bit editing area is described as follows:
l Description: bit values corresponding to the current value of the register
l Status: If the register contains members with the write property, it is writable; otherwise, it is read-only.
l Editing mode: When the register has a value, the bit editor is available. When you double-click a bit in the register, the bit value automatically changes between 0 and 1.
Figure 3-11 shows I2C Editor.
Figure 3-12 shows the toolbar of I2C Editor.
Figure 3-12 Toolbar of the I2C Editor
The following describes the icons on the toolbar:
l
− Function: reading data
− Description: Reads data of all registers in the editor and updates the data to the GUI.
l
− Function: writing data
− Description: Writes data of all writable registers in the editor to the device.
l
− Function: importing data
− Description: Imports register data from the register data file to the editor.
l
− Function: exporting data
− Description: Exports data of all registers in the editor to a file.
l
− Function: removing registers
− Description: Removes all registers from the editor.
Figure 3-13 shows the I2C device control area.
Figure 3-13 I2C device control area
l I2C Port: I2C port, a 1-byte hexadecimal character string excluding the prefix 0x
l Device Id: device ID, a 1-byte hexadecimal character string excluding the prefix 0x
l Register Address: register address, a 4-byte hexadecimal character string excluding the prefix 0x
l Length: length, a 1-byte hexadecimal character string excluding the prefix 0x
After I2C Port, Device Id, Register Address, and Length are configured, press Enter to add the register to be read to the editor. A register cannot be added repeatedly.
l Address Bytes: number of bytes of the register address
l Register Bytes: number of bytes of the register
Figure 3-14 Register bit editor
The bit editing area is described as follows:
l Description: bit values corresponding to the current value of the register
l Status: If the register contains members with the write property, it is writable; otherwise, it is read-only.
l Editing mode: When the register has a value, the bit editor is available. When you double-click a bit in the register, the bit value automatically changes between 0 and 1.
Figure 3-15 shows Description View.
After a board is connected successfully and registers are added from HiReg Explorer to Register Editor, select a register in Register Editor. The corresponding description of the register in the data sheet is displayed in Description View.
The Description View displays the following information about a register:
l Register name
l Description
l Offset address
l Initial value
l Member information
− Bit information
− Attribute
− Member name
You can import and export register data, and compare the register data of the current chip with exported file data. Figure 3-16 shows the Register Comparison view.
Figure 3-16 Register Comparison view
l Importing data
Clicking on
the toolbar imports file data into the register comparator. The format of
imported data must be the same as the format of data exported from the register
editor.
l Updating data
l Writing all data
l Reading data periodically
When there is data in the comparator, clicking on the toolbar
displays the dialog box for setting the scheduled read and data recording
parameters, as shown in Figure 3-17. Set the time interval, which
cannot be less than 200 ms, and click OK. Then the comparator reads register values from the board at the
configured interval and compares the read values with imported values until you
click
again
or inconsistency between the read values and the imported values occurs. Other
buttons on the toolbar are unavailable during this operation.
l Removing all data
Clicking on
the toolbar removes all imported data in the comparator.
Figure 3-17 Setting the time interval
In this instance, a board is connected for reading and writing to registers, importing, exporting, and comparing data. This instance is designed to familiarize you with the uses of the register debugging tool.
Perform the following steps:
Step 1 Connect the PC for development to a board.
[Serial port connection]
1.
Click on
the toolbar.
2. Create a serial port connection, and modify the parameters as follows:
− Port: COM1
− Baud Rate: 115200
− Data Bits: None
− Stop Bits: None
− Parity: None
− Flow Control: None
− Timeout (sec): 5
3. Click Add.
4. Connect the PC for development to the board over the serial port COM1, and power on the board.
5.
After the board is started, select the newly
created serial port connection from the drop-down list on the toolbar, and
click the connect icon on the toolbar. Then the
HiTool establishes the connection to the board. If the connection is
successfully established, the connect icon
is dimmed, and the
disconnect icon
is available, which is used
to end the connection to the board. If the connection fails to be established,
the system displays a message indicating the connection failure. In this case,
check whether the physical connection and the configured connection parameters
are correct.
Figure 3-18 shows the dialog box for creating a serial connection.
Figure 3-18 Creating a serial connection
[Network port connection]
1.
Click on
the toolbar.
2. Create a telnet connection and modify the parameters as follows:
Host: 192.168.1.6 (enter the IP address for the connected board)
Port: 23
3. Click Add.
4. Connect the PC for development to the board over the network port, and power on the board.
5.
After the board is started, select the newly
created telnet connection from the drop-down list on the toolbar, and click the
connect icon on the toolbar. Then the
HiTool establishes the connection to the board. If the connection is
successfully established, the connect icon
is dimmed, and the
disconnect icon
is available, which is used
to end the connection to the board. If the connection fails to be established,
the system displays a message indicating the connection failure. In this case,
check whether the physical connection and the configured connection parameters
are correct.
Figure 3-19 shows the dialog box for creating a telnet connection.
Figure 3-19 Creating a telnet connection
Step 2 Check the chip model.
l After the HiReg on the PC connects to the board successfully, the HiReg detects the chip model of the connected board and checks whether the model of the chip on the board is the same as that you select on the tool platform.
l If the chip model matches, you can continue reading and writing to registers. If the chip model mismatches, the system displays a message indicating that the check fails, and you cannot debug registers. In this case, check the chip model and try again.
Step 3 Query and add registers, and view register description information.
l Querying registers
After the chip model is verified, the HiReg Explorer view displays the tree structure of the chip. You can then search for a register by name or address.
l Adding registers
You can add a specific register or add multiple registers in batches to the register editor. You can read and write to registers only in the register editor.
l Viewing information about a register
After you click a register in the register editor, information about the register is displayed in the description view.
See Figure 3-20.
Figure 3-20 Querying and adding registers, and viewing register description information
Step 4 Edit, read, and write register data.
l Editing register data
− Method 1: Select and read a register in the register editor, and then double-click the cell below the editor to directly edit the register value. (Only data in the memory of the PC is edited at this time. The value is written to the board only after the write operation is performed.)
− Method 2: Select a register, and double-click a cell in the bit editor to edit the register data by bit. If a value is modified, it turns into red.
l Reading and writing to registers
− Reading registers
After selecting a register in the register editor, you can read the register or multiple registers in batches by using the shortcut menu.
− Writing to registers
You can write to a single register cell or multiple cells in batches in the editor.
See Figure 3-21.
Figure 3-21 Editing, reading, and writing register data
Step 5 Import and export register data.
Clicking the export icon on the HiReg toolbar exports data in the current register editor to the .data file. Clicking the import icon on the toolbar imports data in the .data file to the register editor.
Step 6 Compare register data.
Import register data from a file to the
register comparator, click , read
register data from the board to the register comparator, and then compare the
register data from the file with that from the board. If the register values
obtained from the board mismatch those from the file, the mismatched values are
highlighted. You can select a mismatched value from the board and write the
corresponding value from the file to the board by using the shortcut menu; or
you can click
on the toolbar
to write all mismatched values from the file to the board. Note that not all
register values can be written to the board successfully because some registers
cannot be modified.
See Figure 3-22.
Figure 3-22 Comparing register data
Step 7 Read registers periodically and record register data.
Click on the toolbar of
the register editor, set Time Interval to 300 ms, select Recording to File, and set Recording File to C:\TestData.data, and start recording data periodically. You can observe from the
console that data is being read and updated in the editor. Data is being
written to the file for storing recorded data, and the file size is gradually
increasing.
See Figure 3-23.
Figure 3-23 Setting the time interval
Step 8 Set parameters in the Preferences dialog box.
l Read After Write: If this option is selected, a read operation is performed after each write operation to update the data.
l Auto Writing: If this option is selected, the new values are automatically written to the board after modification.
l Auto Load: If this option is selected, data is loaded from the board when registers in the HiReg Explorer are added to the register editor.
See Figure 3-24.
----End
The HiReg can be used to debug the DDR memory data. It has the following functions:
l Supports two connection modes: serial port connection and network port connection.
l Detects the chip model.
The memory view can be used no matter whether the model of the chip on the connected board matches the selected chip model.
l Supports multiple memory views.
Multiple memory views can be added for editing and comparing data blocks of various memory addresses.
l Reads and writes memory data.
One or more memory data blocks can be read or written at a time, and memory data can be read periodically.
l Views and edits memory data.
l Exports, imports, and compares memory data.
l Supports the console output.
Figure 4-1 shows the memory view.
Figure 4-2 shows the toolbar of the memory view.
Figure 4-2 Toolbar of the memory view
The following describes the icons on the toolbar:
l
− Function: reading data
− Description: Reads data from the board.
l
− Function: reading data periodically
− Description: Starts or stops the scheduled read task.
l
− Function: writing data
− Description: Writes data in the editor to the board.
l
− Function: importing data
− Description: Imports memory data in a file to the editor.
l
− Function: exporting data
− Description: Exports data in the editor to a file.
l
− Function: adding memory views
− Description: Adds a memory view.
l
− Function: memory comparison
− Description: Opens the memory comparator.
Figure 4-3 shows the data definition area of the memory view.
Figure 4-3 Data definition area of the memory view
l Start Address
− Description: start address of data to be read (there is no initial value)
− Format: hexadecimal number (prefix 0x excluded)
l Length
− Description: length of data to be read (the initial value is 256)
− Format: decimal number, 4-byte-aligned. It is automatically adjusted if it is not aligned. For example, if you enter 1, it is adjusted to 4; if you enter 7, it is adjusted to 8.
l Column Count
− Description: absolute address of the register (the initial value is 4)
− Format: decimal number (1, 2, 4, 8, or 16)
l Data Byte Count
− Description: number of bytes allowed in the data unit of the editor (the initial value is 4)
− Format: decimal number (1, 2, or 4)
l Format
− Description: bit format corresponding to the current value of the register (the initial format is hexadecimal)
− Format: character strings, hexadecimal or decimal
Figure 4-4 shows the area for editing memory data. It displays memory data of the target board based on the configured address and data length. The display format can be specified, including the number of columns, and number of bytes in each column.
l The format of the entered value must be consistent with the selected data format.
l If Hex is selected, you need to enter a hexadecimal value, and the length of entered data cannot be greater than that of the original data. If the length of entered data is less than that of the original data, the upper bits are automatically stuffed with 0s.
l If Dec is selected, you need to enter a decimal value. If the entered value is too large, it is automatically changed to an appropriate value, which is related to the number of bytes.
The memory editor allows you to view and edit the value of a data cell by bit. Select the memory cell to be viewed and edited. The bit editor automatically displays the content of the memory cell.
l Double-click a bit value. The bit value automatically changes between 0 and 1 and is updated to the data area.
l Double-click a cell. The editor is activated. Then enter the corresponding value and press Enter to complete editing or press Esc to cancel the editing.
l Reading memory data
To read the DDR memory data, press Enter or click on the
toolbar of the memory view after entering the start address.
l Writing memory data
To write the DDR data to the board,
click on the toolbar.
l Reading memory data periodically
The method of reading DDR memory data periodically is similar to that of reading registers periodically.
l Changing the format
− Length: Specify Length (65536 at the maximum) in the data definition area, and press Enter.
− Number of columns: Specify Column Count in the data definition area.
− Number of bytes: Specify Data Byte Count in the data definition area.
− Data format: Specify Format in the data definition area.
Figure 4-6 shows the Memory Comparison view.
Figure 4-6 Memory Comparison view
This tool is designed for comparing memory data. Therefore, the Memory Comparison view must work with the Memory View.
Data with the same offset address is compared. The start address is not related.
Figure 4-7 shows the toolbar of the Memory Comparison view.
Figure 4-7 Toolbar of the Memory Comparison view
You can choose two same or different memory views on the toolbar for memory comparison.
The inconsistencies between memory views are highlighted.
Figure 4-8 Memory comparison (inconsistency)
If data in two memory views is the same, the data format is not changed.
Figure 4-9 Memory comparison (the same)
In this instance, a board is connected for reading, writing, importing, exporting, and comparing memory data. This instance is designed to familiarize you with the uses of the memory debugging tool.
Perform the following steps:
Step 1 Connect the PC for development to a board.
[Serial port connection]
1.
Click on
the toolbar.
2. Create a serial port connection and modify the parameters as follows:
− Port: COM1
− Baud Rate: 115200
− Data Bits: None
− Stop Bits: None
− Parity: None
− Flow Control: None
− Timeout (sec): 5
3. Click Add.
4.
Connect the PC for development to the board over
the serial port COM1, and power on the board. After the board is started,
select the newly created serial port connection from the drop-down list on the
toolbar, and click the connect icon on the toolbar. Then the
HiTool establishes the connection to the board. If the connection is successfully
established, the connect icon
is dimmed, and the
disconnect icon
is available, which is used
to end the connection to the board. If the connection fails to be established,
the system displays a message indicating the connection failure. In this case,
check whether the physical connection and the configured connection parameters
are correct.
[Network port connection]
1.
Click on
the toolbar.
2. Create a telnet connection and modify the parameters as follows:
− Host: 192.168.1.6
− Port: 23
3. Click Add.
4. Connect the PC for development to the board over the network port, and power on the board.
5.
After the board is started, select the newly
created telnet connection from the drop-down list on the toolbar, and click the
connect icon on the toolbar. Then the HiTool establishes the connection to the
board. If the connection is successfully established, the connect icon
is
dimmed, and the disconnect icon
is available, which is used
to end the connection to the board. If the connection fails to be established,
the system displays a message indicating the connection failure. In this case,
check whether the physical connection and the configured connection parameters
are correct.
Step 2 Check the chip model.
After the HiReg on the PC connects to the board successfully, the HiReg checks the chip model of the connected board and checks whether the model of the chip on the board is the same as that you select on the tool platform. If the chip model matches, you can go on reading and writing to the memory. If the chip model mismatches, the system displays a message indicating that the check fails. In this case, check the chip model and try again.
Step 3 Add memory data to the editing area.
Enter the start address and length of the memory data to be added to the editing area, and press Enter. The memory data with the specified length at the specified start address is then displayed in the memory editor.
Step 4 Editing, reading, and writing memory data.
l Editing memory data
− Method 1: Select and read a memory data value in the memory editor, and then double-click the cell below the editor to directly edit the memory value. (Only data in the memory of the PC is edited at this time. The value is written to the board only after the write operation is performed.)
− Method 2: Select the memory data, and double-click a cell in the bit editor to edit the memory data by bit.
l Reading and writing memory data
− Reading memory data
− Writing memory data
Click on the toolbar.
The memory data in the memory editor is written to the board. If the automatic
write function is enabled, modified data is automatically written to the
corresponding memory address of the board after a cell is edited.
Step 5 Import and export memory data.
Clicking the export icon on the HiReg toolbar exports data in the current register editor to the .data file. Clicking the import icon on the toolbar imports data in the .data file to the memory editor.
Step 6 Compare memory data.
If there are multiple memory views, you can compare data in any two memory views in the Memory Comparison view. Click the two buttons on the upper right corner of the Memory Comparison view to specify the two memory views to be compared. Inconsistencies are highlighted as red characters with yellow background.
Step 7 Read memory data periodically and record memory data.
Click on the toolbar of the
memory editor, set the read time interval to 300 ms and click OK. You can observe from the console
that data is being read and updated in the editor.
Step 8 Set parameters in the Preferences dialog box.
l Read After Write: If this option is selected, a read operation is performed after each write operation to read the written data.
l Auto Writing: If this option is selected, the new values are automatically written to the board after modification.
l Auto Load: If this option is selected, data is loaded from the board when memory data is added to the memory editor.
----End
The HiReg allows you to debug registers in U-boot mode as well as in kernel mode. However, only serial port connections are supported for debugging registers in U-boot mode. Meanwhile, the I2C is not supported for debugging in U-boot mode.
When the connection manager of the platform is used to establish a serial port connection, the Mode switching dialog box is displayed, asking whether you want to debug registers in the U-boot mode (this dialog box is not displayed if Show Mode Switch Dialog when Connected by Serial is deselected in the Preferences dialog box of the HiReg).
Figure 5-1 Switching to the U-boot mode
Click Enter Boot Mode to debug registers in U-boot mode.
If you need the debugging function in only kernel mode, you can select Do not show this dialog next time, and automatically run in Kernel Mode in the Mode switching dialog box. Then the system does not display the Mode switching dialog box again when you establish a serial port connection.
If you want the Mode switching dialog box to be displayed, choose Window > Preferences, click HiReg, select Show Mode Switch Dialog when Connected by Serial, and click OK. See Figure 5-2.
Figure 5-2 Preferences dialog box
Problem Description
Solution
To locate the problem, perform the following steps:
Step 1 Check whether the physical connection between the serial ports of the PC and the board is normal, and whether the ports are correct.
Step 2 Check whether the connection parameters are correctly configured.
Step 3 Restart the board, and try again.
----End
Problem Description
After a network port connection is
successfully configured and saved by clicking on
the toolbar and the connect icon is clicked, the network port cannot be
connected.
Solution
To locate the problem, perform the following steps:
Step 1 Check whether the physical connection between the PC and the board is normal, and whether the IP address is correctly configured and can be pinged.
Step 2 Check whether the connection parameters are correctly configured.
Step 3 Restart the board, and try again.
----End
Problem Description
After a chip is selected on the main GUI of the HiTool and the HiReg is opened, the system displays a message in the HiReg explorer view indicating that the chip model of the board and the selected chip model are mismatched.
Solution
Check whether the selected chip model is the same as the actual chip model on the board. You can view the selected chip model in the HiTool by choosing Device > Current Device.
A Acronyms and Abbreviations
D |
|
DDR |
double data rate |
|
|
I |
|
I2C |
inter-integrated circuit |
IP |
Internet Protocol |
|
|
P |
|
PC |
personal computer |