Phytec PhyBoard Wega AM335x Guía del usuario

A product of a PHYTEC Technology Holding company

phyBOARD®-Wega AM335x

Application Guide

Document No.: L-792e_1

SBC Prod. No..: PB-00802-xxx

CB PCB No.: 1405.1, 1405.2

SOM PCB No.: 1397.1

Edition: August 2015

phyBOARD-Wega AM335x [PB-00802-xxx]

©PHYTEC Messtechnik GmbH 2014 L-792e_1

Copyrighted products are not explicitly indicated in this manual. The absence of the trademark (™, or ®)

and copyright (©) symbols does not imply that a product is not protected. Additionally, registered patents

and trademarks are similarly not expressly indicated in this manual.

The information in this document has been carefully checked and is considered to be entirely reliable.

However, PHYTEC Messtechnik GmbH assumes no responsibility for any inaccuracies. PHYTEC Messtechnik

GmbH neither gives any guarantee nor accepts any liability whatsoever for consequential damages

resulting from the use of this manual or its associated product. PHYTEC Messtechnik GmbH reserves the

right to alter the information contained herein without prior notification and accepts no responsibility for

any damages that might result.

Additionally, PHYTEC Messtechnik GmbH offers no guarantee nor accepts any liability for damages arising

from the improper usage or improper installation of the hardware or software. PHYTEC Messtechnik GmbH

further reserves the right to alter the layout and/or design of the hardware without prior notification and

accepts no liability for doing so.

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without the express written consent from PHYTEC Messtechnik GmbH.

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Web Site: http://www.phytec.in http://www.phytec.cn

1st Edition August 2015

Contents

©PHYTEC Messtechnik GmbH 2014 L-792e_1 i

List of Figures........................................................................................................... iv

List of Tables ............................................................................................................. v

Conventions, Abbreviations and Acronyms .................................................................... vi

Preface .................................................................................................................... ix

1Introduction ...................................................................................................... 1

1.1 Hardware Overview........................................................................................ 1

1.1.1 Features of the phyBOARD-Wega AM335x ............................................... 1

1.1.2 Block Diagram................................................................................... 2

1.1.3 View of the phyBOARD-Wega AM335x..................................................... 3

1.2 Software Overview......................................................................................... 4

1.2.1 Ubuntu............................................................................................ 4

1.2.2 Eclipse............................................................................................. 4

1.2.3 Qt Creator ........................................................................................ 4

1.2.4 Yocto Project .................................................................................... 4

2Application Programming..................................................................................... 5

2.1 Working with Eclipse...................................................................................... 5

2.1.1 Programming in the C/C++ Perspective................................................... 5

2.1.1.1 Work with the Demo Project .................................................... 5

2.1.1.2 Creating a New Project ..........................................................11

2.1.1.3 Modifying the Demo Application .............................................18

2.1.1.4 Starting a Program out of Eclipse on the Target..........................21

2.1.2 Debugging an Example Project ............................................................23

2.1.2.1 Starting the GDB Server on the Target ......................................24

2.1.2.2 Configuring and Starting the Debugger in Eclipse.......................24

2.1.2.3 Setting a Breakpoint ............................................................29

2.1.2.4 Stepping through and Watching Variable Contents .....................30

2.1.2.5 Stepping through and Changing Variable Contents .....................32

2.1.2.6 Using the Memory Monitor.....................................................33

2.2 Working with Qt Creator ................................................................................36

2.2.1 Stop the Running Qt Demo on the Target ...............................................36

2.2.2 Importing the Demo Application..........................................................36

2.2.3 Work with the Demo Application ..........................................................38

2.2.4 Compile and Run the Demo Application on the Target...............................41

2.2.5 Compile and Run the Demo Application on the Host.................................43

2.2.6 Debugging the Demo Application.........................................................44

2.2.6.1 Using QDebug for simple Debugging Messages...........................44

2.2.6.2 Using the integrated Qt Creator Debugger.................................46

3Accessing the phyBOARD-Wega Features .............................................................. 51

3.1 Overview of the phyBOARD-Wega Peripherals.....................................................51

3.1.1 Connectors and Pin Header.................................................................51

3.1.2 LEDs...............................................................................................52

3.1.3 Switches .........................................................................................52

3.1.4 Jumpers..........................................................................................53

3.2 Functional Components on the phyBOARD-Wega SBC ..........................................54

phyBOARD-Wega AM335x [PB-00802-xxx]

ii ©PHYTEC Messtechnik GmbH 2014 L-792e_1

3.2.1 Power Supply .................................................................................. 54

3.2.1.1 Power Connectors (X67 and X72)............................................ 54

3.2.1.1.1 PHOENIX 2-pole MINI COMBICON Base Strip (X67)........55

3.2.1.1.2 USB Micro-AB (X72)...............................................55

3.2.1.1.3 WAGO 6-pole Male Header (X67)...............................55

3.2.1.2 Power LED D58 ................................................................... 56

3.2.1.3 VBAT and RTC ..................................................................... 56

3.2.2 UART Connectivity (X66 and X69) ........................................................ 57

3.2.2.1 Software Implementation ..................................................... 58

3.2.3 Ethernet Connectivity (X16 and X17) ................................................... 59

3.2.3.1 Software Implementation ..................................................... 60

3.2.4 USB Connectivity (X15 and X42).......................................................... 60

3.2.4.1 Software Implementation ..................................................... 61

3.2.4.1.1 USB Host .............................................................61

3.2.4.1.2 USB OTG ..............................................................61

3.2.5 Audio Interface (X55 and X73)............................................................ 62

3.2.5.1 Software Implementation ..................................................... 63

3.2.6 CAN Connectivity (X65, JP3)............................................................... 64

3.2.6.1 Software Implementation ..................................................... 65

3.2.7 Secure Digital Memory Card/ MultiMedia Card (X11) ............................... 67

3.2.7.1 Software Implementation ..................................................... 67

3.2.8 Boot Mode (S4) ............................................................................... 68

3.2.9 System Reset Button (S2) .................................................................. 69

3.2.10 Audio/Video connectors (X70 and X71) ................................................ 69

3.2.11 Expansion connector (X69)................................................................ 69

3.2.12 Addressing the RTC........................................................................... 70

3.2.13 CPU Core Frequency Scaling ............................................................... 70

3.2.14 Using the Pre-installed Qt Demo Applications ........................................ 72

4System Level Customizing .................................................................................. 73

4.1 About this Section....................................................................................... 73

4.2 Software Overview....................................................................................... 73

4.3 Getting Started with the BSP ......................................................................... 73

4.3.1 Working with Yocto........................................................................... 73

4.3.2 Writing the Root Filesystem into the Target’s Flash ................................. 77

4.4 Updating the Software using an SD Card .......................................................... 80

4.4.1 Creating a bootable SD Card ............................................................... 80

4.4.2 Flashing the Bootloader .................................................................... 81

4.4.3 Writing the Kernel / Root File System into Flash ..................................... 81

4.5 Setup your own Linux Host PC........................................................................ 82

4.5.1 Essential settings............................................................................. 82

4.5.1.1 Installing Ubuntu................................................................ 82

4.5.1.2 Installation of Software Packages........................................... 84

4.5.1.3 Set the Git Configuration ...................................................... 85

4.5.1.4 Build the Board Support Package and Install the SDK ................. 85

4.5.1.5 Setting up Eclipse and Integrate Plug-ins................................. 86

4.5.1.6 Install and Setup Qt Creator................................................... 89

4.5.1.7 Setting up a TFTP server........................................................ 94

4.5.2 Optional Settings............................................................................. 95

Contents

©PHYTEC Messtechnik GmbH 2014 L-792e_1 iii

4.6 System Level Hardware Information ................................................................96

4.6.1 USB Connectivity (X15 and X42) ..........................................................96

4.6.1.1 Combining the Overcurrent Signals (J78 and J77) ......................96

4.6.1.2 96

4.6.1.3 Rerouting the USB Interfaces to different Connectors (J72 – J75, J79

and J80) ............................................................................97

4.6.2 I2C Connectivity................................................................................97

4.6.2.1 Software Implementation......................................................98

4.6.2.1.1 EEPROM............................................................... 98

4.6.3 Audio/Video Connectors (X70 and X71).................................................99

4.6.3.1 Software Implementation....................................................102

4.6.3.1.1 Framebuffer ....................................................... 102

4.6.3.1.2 Brightness......................................................... 102

4.6.3.1.3 Touch ............................................................... 102

4.6.3.1.4 I2C Connectivity .................................................. 103

4.6.3.1.5 Audio I2S........................................................... 103

4.6.3.1.6 User programmable GPIOs..................................... 103

4.6.4 Expansion Connector (X69)...............................................................104

4.6.4.1 Software Implementation....................................................107

4.6.4.1.1 UART Connectivity ............................................... 107

4.6.4.1.2 USB Connectivity ................................................ 107

4.6.4.1.3 SPI Connectivity.................................................. 107

4.6.4.1.4 I2C Connectivity .................................................. 108

4.6.4.1.5 User programmable GPIOs..................................... 108

5Revision History ............................................................................................. 110

Index.................................................................................................................... 111

phyBOARD-Wega AM335x [PB-00802-xxx]

iv ©PHYTEC Messtechnik GmbH 2014 L-792e_1

List of Figures

Figure 1: Block Diagram of the phyBOARD-Wega AM335x ................................................. 2

Figure 2: View of the phyBOARD-Wega AM335x .............................................................. 3

Figure 3: Power Supply Connectors............................................................................ 54

Figure 4: RS-232 Interface Connector (X66) ................................................................ 57

Figure 5: RS-232 Connector Signal Mapping................................................................ 58

Figure 6: Ethernet Interfaces at Connectors (X16 and X17)............................................. 59

Figure 7: Components supporting the USB Interfaces.................................................... 60

Figure 8: Audio Interfaces at Connectors (X55 and X73)................................................. 62

Figure 9: Components supporting the CAN Interface ..................................................... 64

Figure 10: CAN Connector Signal Mapping .................................................................... 65

Figure 11: SD / MM Card interface at connector( X11) ..................................................... 67

Figure 12: Boot Switch (S4)....................................................................................... 68

Figure 13: System Reset Button (S2) ........................................................................... 69

Figure 14: Audio/Video Connectors (X70 and X71) ......................................................... 99

Figure 15: Expansion Connector (X69) ........................................................................104

Contents

©PHYTEC Messtechnik GmbH 2014 L-792e_1 v

List of Tables

Table 1: Abbreviations and Acronyms used in this Manual..............................................vii

Table 2: phyBOARD-Wega Connectors and Pin Headers..................................................51

Table 3: phyBOARD-Wega LEDs Descriptions ...............................................................52

Table 4: phyBOARD-Wega Switches Description ...........................................................52

Table 5: phyBOARD-Wega Jumper Description .............................................................53

Table 6: Pin Assignment of the 2-pole PHOENIX MINI COMBICON Base Strip at X67..............55

Table 7: Pin Assignment of the 6-pole WAGO Connector at X67........................................56

Table 8: Pin Assignment of RS-232 Interface Connector X66...........................................57

Table 9: Pin Assignment of Audio Connector X73..........................................................62

Table 10: Pin Assignment of Audio Connector X55..........................................................62

Table 11: Pin Assignment of CAN Connector X65 ............................................................64

Table 12: Boot Switch Configuration (S4).....................................................................68

Table 13: USBOC Configuration ..................................................................................96

Table 14: USB Routing Configuration ..........................................................................97

Table 15: I2C Connectivity .........................................................................................97

Table 16: I2C Addresses in Use ...................................................................................98

Table 17: Pin Assignment of PHYTEC A/V connector X70 ................................................101

Table 18: Pin Assignment of PHYTEC A/V connector X71 ................................................101

Table 19: A/V Jumper Configuration J77....................................................................101

Table 20: GPIOs available at A/V Connector X71...........................................................103

Table 21: Pin Assignment of PHYTEC Expansion Connector X69 .......................................106

Table 22: GPIOs available at Expansion Connector X69..................................................108

Table 23: GPO Pins and Device Path...........................................................................109

phyBOARD-Wega AM335x [PB-00802-xxx]

vi ©PHYTEC Messtechnik GmbH 2014 L-792e_1

Conventions, Abbreviations and Acronyms

This hardware manual describes the PB-00802-xxx Single Board Computer (SBC) in the

following referred to as phyBOARD-Wega AM335x. The manual specifies the

phyBOARD-Wega AM335x's design and function. Precise specifications for the Texas

Instruments AM335x microcontrollers can be found in the Texas Instrumenten’s AM335x

Data Sheet and Technical Reference Manual.

Conventions

The conventions used in this manual are as follows:

Signals that are preceded by an "n", "/", or “#”character (e.g.: nRD, /RD, or #RD), or

that have a dash on top of the signal name (e.g.: RD) are designated as active low

signals. That is, their active state is when they are driven low, or are driving low.

A "0" indicates a logic zero or low-level signal, while a "1" represents a logic one or

high-level signal.

The hex-numbers given for addresses of I2C devices always represent the 7 MSB of the

address byte. The correct value of the LSB which depends on the desired command

(read (1), or write (0)) must be added to get the complete address byte. E.g. given

address in this manual 0x41 => complete address byte = 0x83 to read from the device

and 0x82 to write to the device.

Tables which describe jumper settings show the default position in bold, blue text.

Text in blue italic indicates a hyperlink within, or external to the document. Click these

links to quickly jump to the applicable URL, part, chapter, table, or figure.

Text in bold italic indicates an interaction by the user, which is defined on the screen.

Text in Consolasindicates an input by the user, without a premade text or button to

click on.

Text in italic indicates proper names of development tools and corresponding controls

(windows, tabs, commands etc.) used within the development tool, no interaction

takes place.

White Text on black background shows the result of any user interaction (command,

program execution, etc.)

Abbreviations and Acronyms

Many acronyms and abbreviations are used throughout this manual. Use the table below to

navigate unfamiliar terms used in this document.

Conventions, Abbreviations and Acronyms

©PHYTEC Messtechnik GmbH 2014 L-792e_1 vii

Abbreviation Definition

A/V Audio/Video

BSP Board Support Package (Software delivered with the Development Kit

including an operating system (Windows, or Linux) pre-installed on

the module and Development Tools)

CB Carrier Board; used in reference to the phyBOARD-Wega Development

Kit Carrier Board

DFF D flip-flop

DSC Direct Solder Connect

EMB External memory bus

EMI Electromagnetic Interference

GPI General purpose input

GPIO General purpose input and output

GPO General purpose output

IRAM Internal RAM; the internal static RAM on the Texas Instruments

AM335x microcontroller

J Solder jumper; these types of jumpers require solder equipment to

remove and place

JP Solderless jumper; these types of jumpers can be removed and placed

by hand with no special tools

NC Not Connected

NM Not Mounted

NS Not Specified

PCB Printed circuit board

PDI PHYTEC Display Interface; defined to connect PHYTEC display adapter

boards, or custom adapters

PEB PHYTEC Expansion Board

PMIC Power management IC

PoE Power over Ethernet

PoP Package on Package

POR Power-on reset

RTC Real-time clock

SBC Single Board Computer; used in reference to the PBA-CD-02

/phyBOARD-Wega AM335x

SMT Surface mount technology

SOM System on Module; used in reference to the PCL-051

/phyCORE-AM335x module

Sx User button Sx (e.g. S1, S2) used in reference to the available user

buttons, or DIP switches on the CB

Sx_y Switch y of DIP switch Sx; used in reference to the DIP switch on the

carrier board

VSTBY SOM standby voltage input

Table 1: Abbreviations and Acronyms used in this Manual

phyBOARD-Wega AM335x [PB-00802-xxx]

At this icon you might leave the path of this Application Guide.

This is a warning. It helps you to avoid annoying problems.

You can find useful supplementary information about the topic.

At the beginning of each chapter you can find information about the time

required to read the following chapter.

You have successfully completed an important part of this Application

Guide.

You can find information to solve problems.

Note: The BSP delivered with the phyBOARD-Wega AM335x usually includes drivers and/or

software for controlling all components such as interfaces, memory, etc. Therefore

programming close to hardware at register level is not necessary in most cases. For this

reason, this manual contains no detailed description of the controller's registers. Please

refer to the AM335x Technical Reference Manual, if such information is needed to connect

customer designed applications.

The BSP is configured according to the hardware configuration including the expansion

board delivered with the kit. Thus some functions of the hyBOARD-Wega AM335x might not

be available if the corresponding pins and drivers are needed to support an expansion

board. If the expansion board is removed, or exchanged the BSP must be exchanged, too.

From BSP version AM335x-PD14.1-rc1 on it is possible to configure the BSP in regard to

the hardware configuration. This allows to easily adapt the BSP if an expansion board is

attached, removed, or exchanged.

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