Using Embedded Tools for I2C, SPI, and USB Debugging for the
Transcript of Using Embedded Tools for I2C, SPI, and USB Debugging for the
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Renesas Electronics America Inc.
© 2012 Renesas Electronics America Inc. All rights reserved.
Class ID: Class ID: 3L03B
Scott Loring, Engineering Manager, Total Phase
Using Embedded Tools for I2C, SPI, and USB Debugging for the Renesas RX63N RDK
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Scott Loring
Engineering Manager at Total Phase
Education
B.S. Computer Engineering from the University of California, Riverside
M.S. Electrical Engineering from Stanford University
Work Experience
10 years experience with embedded systems development
5 years at Total Phase designing hardware and software development tools
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Renesas Technology & Solution Portfolio
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Introduction to the Renesas RX63N RDK
Introduction to Total Phase Development Tools
Lab
Beagle protocol analyzers and Data Center Software
Aardvark I2C/SPI Host Adapter and Flash Center Software
Development Start Up
Bug 1: I2C LCD
Bug 2: Read I2C
Q&A
Agenda
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Renesas RX63N RDK
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Renesas RX63N RDK J-Link
debugger
Ext. Power
5 VDC
Speaker
Stereo headphone
jack
Expansion
header
LED
Ring
10/100 Ethernet
(Opt. IEEE1588)
USB
Host/Function
CAN
transceiver
128 Mb PCM
Memory
SD-Card
Application header
WiFi/Bluetooth
I2C/SPI Debug
Connector
PMOD
expansion
Graphics
LCD
Digital sensors
Temp & Accel
User push
buttons
POT
VR1
MIC and
amplifier
RS-232
Serial Port
Expansion header
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Total Phase Development Tools
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By using debugging tools manufactured by Total Phase, you can:
Debug in real time
Quickly evaluate embedded systems
Program EEPROMS and flash memories
Easily collaborate with colleagues
Maximize productivity
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General purpose I2C/SPI master or slave
Active communication on the I2C bus up to 800 kHz
Active communication up to 8 MHz as an SPI master
and up to 4 MHz as an SPI slave
Aardvark I2C/SPI Host Adapter
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Designed to work with the Aardvark I2C/SPI Host Adapter
Read and Write I2C/SPI messages
XML Batch Script support
Built-in Help System
Multiple adapter support
Windows, Linux, Mac OS X
Control Center Software
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Non-intrusively monitor an I2C or SPI bus
Interactive Real-Time Display, Filter, and Search
Monitors I2C data up to 4 MHz
Monitors SPI data up to 24 MHz
Beagle I2C/SPI
Protocol Analyzer
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Non-intrusively monitor high-, full-, and low-speed USB 2.0
Interactive Real-Time Display, Filter, and Search
Real-time class-level decoding
64 MB on-board hardware buffer
Beagle USB 480
Protocol Analyzer
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Designed to work with the Beagle Protocol Analyzers
LiveDisplay
LiveFilter
LiveSearch
32-bit and 64-bit support
Tree View and Block View
Windows, Linux, Mac OS X
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Lab Introduction
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Lab Introduction
Beagle USB 480
Protocol Analyzer
Hub
Beagle I2C/SPI
Protocol
Analyzer
Aardvark
I2C/SPI Host
Adapter
EEPROM Activity
Board
Host
Computer
External
Power
Ribbon Cable
Renesas RX63N
RDK
Physical Set Up
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Logical Set Up
RX63N RDK
I2C
EEPROM
I2C Bus
Beagle I2C/SPI
Protocol Analyzer
PC
Aardvark I2C/SPI
Host Adapter Beagle USB 480
Protocol Analyzer
USB
Lab Introduction
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Beagle Protocol Analyzers
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Objective: Introduce the Beagle protocol analyzers
Task: Set up and start a live capture using the Data Center Software
Beagle Protocol Analyzers
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1. Open the Data Center Software.
2. Click Connect to Analyzer.
3. Select the I2C/SPI analyzer and Click OK.
Configuring the Beagle analyzer for use
Beagle Protocol Analyzers
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4. Click Device Settings.
5. Change the capture protocol to I2C.
6. Set the sampling rate to 50 MHz.
7. Set the protocol lens to I2C.
Configuring the Beagle analyzer for use
Beagle Protocol Analyzers
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4. Click Device Settings.
5. Change the capture protocol to I2C.
6. Set the sampling rate to 50 MHz.
7. Set the protocol lens to I2C.
8. Start the capture.
Configuring the Beagle analyzer for use
Beagle Protocol Analyzers
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Aardvark I2C/SPI Host Adapter
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Objective: Introduce Aardvark I2C/SPI Host Adapter.
Task: Use the Aardvark adapter and Flash Center Software to read and write from the I2C EEPROM.
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1. Open the Flash Center Software
2. Click on Add Adapters
3. Select Aardvark I2C/SPI Host Adapter
4. Click Add
Configuring the Aardvark I2C/SPI Host Adapter for use
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5. Turn on the Target Power button
6. Click on Choose Target to specify which part you will be using
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7. Select I2C EEPROM under Device Type
8. Under Manufacturer, select Atmel
9. Under Part Number, choose AT24C02
10. Click OK
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11. Click the Read Target icon
12. Click Erase
13. Select OK
14. Click Read Target again
Reading and Erasing the SPI EEPROM Contents
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15.Click the Clear button to clear the local buffer
16.Click into the ASCII editor
17.On the first line, type abcdefghijklmnop
Writing Data to the I2C EEPROM
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18. Select the Program and Verify icon
19. Click OK if presented with a warning about exceeding capacity
20. Verify the transactions in Data Center
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Development Start Up
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Objective: Access the project content and application
Task: Load and set up the lab project using the e2Studio designed by Renesas
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1. Open e2Studio
2. Select Browse in the Workspace Launcher
3. Browse to C:\<PATH_TO_FILES>\e2studio-workspace\TPRX63N.work
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4. Select Project Build All
5. Select Run Debug (F11)
6. Select Go (F8)
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7. The “Renesas DevCon 2012” message will be displayed on the LCD along with a prompt to reinsert the USB cable.
Beagle USB 480
Protocol Analyzer
Hub
Beagle I2C/SPI
Protocol
Analyzer
Aardvark
I2C/SPI Host
Adapter
EEPROM Activity
Board
Host
Computer
External
Power
Ribbon Cable
Renesas RX63N
RDK
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8. Reinsert the USB cable (near the Ethernet connector)
9. In the Windows ‘Found New HW wizard’, select “No, not this time” (If you are running Windows 7, Select “Browse my computer.”)
10.Click Next
Installing the Driver
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11.Select “Install from a specific location” (If you are running Windows 7, select “Let me pick.”).
12.Click Next
Installing the Driver
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13. If asked for the libusb driver, select ‘Browse’ and point to the directory <PATH>\material\libusb-drivers\x86.
Installing the Driver
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14.In Windows Device Manager, check that Windows has enumerated the RX
properly. You should have it listed under the “libusb-win32 device” class
Installing the Driver
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15.Launch the RX63N LibUSB GUI by double-clicking the launcher
C:\<PATH_TO_FILES>\libusb-gui\launch.bat
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Bug 1 – I2C to LCD
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Problem: The EEPROM data is incorrectly displayed on the LCD screen
Task: Use Total Phase tools to diagnose and solve the problem
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1. Click LibUSB Connect in the RX63N GUI.
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2. Click LED Control
3. Type Aardvark and click Write LCD
4. Click Clear LCD
5. Click I2C to LCD
Testing Application Functions
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Spend the next few minutes solving the bug in sending data from the EEPROM to the LCD
Beagle USB 480
Protocol Analyzer
Hub
Beagle I2C/SPI
Protocol
Analyzer
Aardvark
I2C/SPI Host
Adapter
EEPROM Activity
Board
Host
Computer
External
Power
Ribbon Cable
Renesas RX63N
RDK
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Using the Beagle I2C analyzer, we can quickly see this problem.
When we used Flash Center, the Data Center displays this transaction.
The first byte of data is 00. Remember that 00 is our offset.
When we click I2C to LCD, the Data Center displays these transactions.
Note that the data is being pushed to the LCD starting at offset 08. The correct offset is 00 as shown in the first write transaction.
Solution
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6. Make the corrections to source code in line 254.
253 case USB_LIBUSB_CMD_I2C_LCD: 254 i2c_eeprom_read(0x50, 8, data, 12); 255 lcd_display(LCD_LINE1, "I2C -> LCD"); 256 lcd_display(LCD_LINE2, data); 257 break;
Correcting the source code and verifying the solution
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7. Save and rebuild the project referring to the handout
8. Click Connect in the Application Box
9. Click I2C to LCD to verify the solution.
Correcting the source code and verifying the solution
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Bug 2 - Read I2C
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Problem: Data is incorrectly read from the EEPROM
Task: Use Total Phase tools to diagnose and solve the problem
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1. Click I2C to GUI
Writing and reading from the EEPROM
You can see the data is incorrectly displayed in the application.
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Spend the next few minutes solving the bug in reading data from the EEPROM.
Beagle USB 480
Protocol Analyzer
Hub
Beagle I2C/SPI
Protocol
Analyzer
Aardvark
I2C/SPI Host
Adapter
EEPROM Activity
Board
Host
Computer
External
Power
Ribbon Cable
Renesas RX63N
RDK
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Using the Beagle analyzers, we can quickly isolate this problem.
When we Read I2C, the Data Center displays these transactions.
Using the Details pane, we can see the data is being read correctly from the I2C EEPROM.
Evaluating the I2C data
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2. Open another Data Center Software
3. Click Connect to Analyzer.
4. Select the USB analyzer and Click OK.
Evaluating the USB data using the Beagle USB 480 analyzer
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5. Go to Capture Settings and adjust the Data Capture Limit to 700 MB
6. Start the Capture
Evaluating the USB data using the Beagle USB 480 analyzer
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7. Go to the Bus Pane
8. In e2studio click Reset then Go (F8)
9. Reinsert the USB cable
10. RX600 LibUSB Demo should appear in the bus pane
Reset the device to see the enumeration details
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11. Go to the Filter tab
12. Uncheck Collapsed & SOFs
13. Apply filter
Filter out extraneous USB data
Only data of interest is displayed in the capture log
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Spend the next few minutes analyzing the USB data to identify the bug.
Beagle USB 480
Protocol Analyzer
Hub
Beagle I2C/SPI
Protocol
Analyzer
Aardvark
I2C/SPI Host
Adapter
EEPROM Activity
Board
Host
Computer
External
Power
Ribbon Cable
Renesas RX63N
RDK
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Using the Beagle USB 480 analyzer, we can diagnose this problem.
When we Read I2C, the Data Center displays these input reports.
Using the Details pane, we can see the data is being read backwards over USB.
Evaluating the USB data
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14. Make the corrections to source code.
232 uint32_t usb_bulk_send_in_packet (uint16_t ip, int16_t fn, uint32_t val) {
233 USB_ER_t err_code; 234 int16_t state; 235 236 static uint8_t data[4]; 237 for (int i = 0, s = 0; i < 4; i++, s+=8) { 238 data[i] = (uint8_t)((val >> s) & 0xff); 239 } 240 write(fn, data, 4);
Correcting the source code and verifying the solution
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15. Save and rebuild the project referring to the handout
16. Click Connect in the GUI
17. Click I2C to GUI to verify the solution.
Correcting the source code and verifying the solution
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Questions and Answers
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