Table of Contents
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Contents
1
1.1
1.2
1.3
1.4
1.5
2
2.1
2.2
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
Introduction ............................................................................................... 2
Product Features....................................................................................... 3
Mechanical Specifications ......................................................................... 4
Electrical Specifications ............................................................................ 4
Environmental Specifications .................................................................... 4
Installation....................................5
Board Connectors ..................................................................................... 6
2.1.1
Connector List ............................................................................... 6
Board Block Diagram ................................................................................ 8
Figure 2.1 ROM-5721 Block Diagram.......................................... 8
Test Tools ............................................................................................... 10
3.1.1
Display Test ................................................................................ 10
3.1.2
Audio Test ................................................................................... 12
3.1.3
PCI-e Test ................................................................................... 13
3.1.4
Battery Test................................................................................. 15
3.1.5
RS-232 Test ................................................................................ 15
3.1.6
I2C Test ...................................................................................... 16
3.1.7
USB Test..................................................................................... 17
3.1.8
RTC Test..................................................................................... 18
3.1.9
MMC (eMMC/SD) Test ............................................................... 20
3.1.10 Ethernet Test .............................................................................. 22
3.1.11 CAN Test .................................................................................... 22
3.1.12 GPIO Test ................................................................................... 23
3.1.13 Watchdog Test ............................................................................ 25
Package Content..................................................................................... 26
3.2.1
Source Code Package ................................................................ 26
Setting up a Build Environment ............................................................... 29
3.3.1
Conventions ................................................................................ 30
3.3.2
Introducing BSP .......................................................................... 30
3.3.3
Build Instructions......................................................................... 33
3.3.4
Creating boot-up on-board flash from pre-built image ................ 34
3.3.5
Creating boot-up on-board flash from built sdcard image ........... 34
Customization ......................................................................................... 36
3.4.1
Package addition ........................................................................ 36
3.4.2
Setting up SDK ........................................................................... 36
3.4.3
Setting up cross compiling environment ..................................... 36
3.4.4
Building & updating u-boot manually .......................................... 36
3.4.5
Building & updating kernel/modules/dtb manually....................... 36
Replace Kernel &dts........................................................ 38
3.4.6
System Recovery .................................................................................... 39
Debug Message ...................................................................................... 39
Linux Software AP and Testing on ROM-5721 ....................................... 40
3.7.1 "Hello World!" Application and Execution .................................... 40
3.7.2 Watchdog Timer Sample Code.................................................... 41
3.7.3 GPIO Setting................................................................................ 42
3.7.4 RS232 Initial Code ....................................................................... 42
3.7.5 Display Output Setting ................................................................. 43
3.7.6 Network Setup ............................................................................. 45
3.7.7 Storage (eMMC/SD Card) ........................................................... 46
................................1
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7
ROM-5721 User Manual
vii
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