Difference between revisions of "Dacu"

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{{InfoBoxTop}}
 
{{InfoBoxTop}}
 
{{AppliesToDacu}}
 
{{AppliesToDacu}}
−
{{AppliesToAxel}}
 
−
{{AppliesToAxelLite}}
 
−
{{AppliesToAxelEsatta}}
 
−
{{Applies To Diva}}
 
 
{{AppliesToLizard}}
 
{{AppliesToLizard}}
 +
{{AppliesToAndroid}}
 
{{InfoBoxBottom}}
 
{{InfoBoxBottom}}
  
 
==Introduction==
 
==Introduction==
  
−
[[File:Dacu-top-view.png|600px|frameless|border]]
+
Dacu is an ARM Cortex-A8 industrial tablet platform, built around a carrier board hosting the [[:Category:Lizard|Lizard]] CPU module. The main system specifications are the following:
−
 
 
−
Dacu is a '''carrier board''' that can host various '''DAVE Embedded Systems''' SOMs, like, for example, the [[:Category:Lizard|Lizard]] CPU module.
 
−
{{ImportantMessage|text=Please note that DACU supports several BOM variants in order to mate with different SOMs or evaluation boards.}}
 
−
 
 
−
 
 
−
Dacu's system specifications are the following:
 
  
 
{| class="wikitable"  
 
{| class="wikitable"  
 
|-
 
|-
−
|Supported SOMs
+
|Microprocessor
−
|[[:Category:AxelUltra|Axel Ultra]]<br>[[:Category:AxelLite|Axel Lite]]<br>[[:Category:Diva|Diva]]<br>[[:Category:Lizard|Lizard]]
+
|ARM Cortex-A8 @ 500 MHz
 
|-
 
|-
 
|Power
 
|Power
Line 27: Line 18:
 
|-
 
|-
 
|Serial Ports
 
|Serial Ports
−
|1x UART RS232 on DB9<br>1x UART (RS232/RS422/RS485) or CAN on DB9 (hardware mount options)<br>1x UART RS232 on pin strip (debug port)
+
|1x UART RS232 on DB9<br>1x UART RS232/RS485/CAN on DB9<br>1x UART RS232 on pin strip (debug port)
 
|-
 
|-
 
|Ethernet
 
|Ethernet
Line 39: Line 30:
 
|-
 
|-
 
|USB
 
|USB
−
|2x USB 2.0 ports
+
|1x USB Host full speed port<br>1x USB Host high speed port
 
|-
 
|-
 
|Audio
 
|Audio
Line 54: Line 45:
 
== Block Diagram ==
 
== Block Diagram ==
  
−
The following picture shows block diagram of the Dacu carrier board (the version for the Lizard SOM):
+
The following picture shows block diagram of Dacu:
−
 
 
 
[[File:dacu-bd.png|thumbnail|center|400px]]
 
[[File:dacu-bd.png|thumbnail|center|400px]]
  
Line 62: Line 52:
 
The following picture shows the mechanical layout of Dacu:
 
The following picture shows the mechanical layout of Dacu:
 
[[File:Dacu-top.png|thumbnail|center|400px]]
 
[[File:Dacu-top.png|thumbnail|center|400px]]
−
 
−
== Available options ==
 
−
 
−
=== RS232/RS485/RS422 or CAN ===
 
−
 
−
=== Male or female DB9 connector ===
 
  
 
== Connectors pinout ==
 
== Connectors pinout ==
Line 77: Line 61:
 
Power is provided through the JP2 DC Power Jack. Power voltage range is [12-24 V]
 
Power is provided through the JP2 DC Power Jack. Power voltage range is [12-24 V]
  
−
=== CPU module connectors – J1, J2 ===
+
=== Lizard module connectors – J1, J2 ===
  
−
J1 and J2 are the 140-pin mating connectors for the hosted SOM.
+
J1 and J2 are the mating connectors for Lizard CPU module.
  
 
=== UART1 - J4 ===
 
=== UART1 - J4 ===
Line 124: Line 108:
 
|}
 
|}
  
−
=== UART2/CAN - J5 ===
+
=== UART2 - J5 ===
−
 
 
−
J5 is a standard DB9 '''male''' connector for the configurable UART/CAN port. The board provides some '''hardware''' mount options for the selection of the UART mode (RS232/RS422/RS485 with auto-direction) or the CAN mode. The board default configuration provides the CAN interface on this port, while the RS232/RS422/RS485 interface is provided as an option to customers who choose the alternative configuration.
 
−
 
 
−
Please note that this port can be used to connect a [http://www.rovingnetworks.com/products/RN240 Bluetooth serial adapter] powered by the 5V_BT signal.
 
−
 
 
  
−
The following table reports the connector's pinout:
+
J5 is a standard DB9 connector for the configurable UART/CAN port. The board provides some mount options for the selection of the UART mode (RS232/RS422/RS485 with autodirection) or the CAN mode. The following table reports the connector's pinout:
  
 
{| class="wikitable"  
 
{| class="wikitable"  
Line 144: Line 123:
 
|-
 
|-
 
|1
 
|1
−
|N.A./Reserved
+
|N.A./CAN_SHIELD
 
|Not connected
 
|Not connected
−
|Not connected
+
|
−
|Not connected
+
|
−
|Reserved
+
|Can shield
 
|
 
|
 
|-
 
|-
Line 154: Line 133:
 
|UART2_A/CAN_M
 
|UART2_A/CAN_M
 
|UART2 rx line
 
|UART2 rx line
−
|Not connected
+
|
−
|Not connected
+
|
 
|CAN bus low signal
 
|CAN bus low signal
−
|
+
|CAN mode primary mount option
 
|-
 
|-
 
|3
 
|3
Line 168: Line 147:
 
|-
 
|-
 
|4
 
|4
−
|N.A./Reserved
+
|N.A./CAN_M(opt)
 
|Not connected
 
|Not connected
−
|Not connected
 
−
|Not connected
 
−
|Reserved
 
 
|
 
|
 +
|
 +
|CAN bus low signal
 +
|CAN mode secondary mount option
 
|-
 
|-
 
|5
 
|5
Line 179: Line 158:
 
|Ground
 
|Ground
 
|Ground
 
|Ground
−
|Ground  
+
|Ground
−
|CAN bus shield (Optional)
+
|CAN bus shield
 
|
 
|
 
|-
 
|-
 
|6
 
|6
−
|N.A./GND
+
|N.A./GND(opt)
 
|Not connected
 
|Not connected
−
|Not connected
 
−
|Not connected
 
−
|Ground (Optional)
 
 
|
 
|
 +
|
 +
|Ground
 +
|CAN mode secondary mount option
 
|-
 
|-
 
|7
 
|7
Line 197: Line 176:
 
|Noninverting driver output
 
|Noninverting driver output
 
|CAN bus high signal
 
|CAN bus high signal
−
|
+
|CAN mode primary mount option
 
|-
 
|-
 
|8
 
|8
−
|UART2_B/Reserved
+
|UART2_B/CAN_P(opt)
 
|UART2 Clear To Send
 
|UART2 Clear To Send
−
|Not connected
 
−
|Not connected
 
−
|Reserved
 
 
|
 
|
 +
|
 +
|CAN bus high signal
 +
|CAN mode secondary mount option
 
|-
 
|-
 
|9
 
|9
 
|5V_BT/CAN_V+
 
|5V_BT/CAN_V+
 
|5V for bluetooth
 
|5V for bluetooth
−
|5V for bluetooth
+
|
−
|5V for bluetooth
+
|
−
|CAN bus Power (Optional)
+
|CAN bus +5V
 
|
 
|
 
|-
 
|-
Line 220: Line 199:
 
==== Configuration Jumpers J26 e J27 ====
 
==== Configuration Jumpers J26 e J27 ====
  
−
When the board is configured to provide the UART2 interface through the J5 connector, the J26 and J27 jumpers are used to configure the UART mode, as reported below:
+
These jumpers are used to configure the UART mode, as reported below:
  
 
{| class="wikitable"  
 
{| class="wikitable"  
 
|-
 
|-
 
!Jumper
 
!Jumper
−
!RS232 mode
+
!RS232
−
!RS422 mode
+
!RS422
−
!RS485 mode
+
!RS485
 
|-
 
|-
 
|1-3
 
|1-3
Line 644: Line 623:
 
=== MicroSD slot - J12 ===
 
=== MicroSD slot - J12 ===
  
−
J12 is a Micro-SD card header. The following table reports the connector's pinout:
+
J12 is a Micro-SD card header.
 +
 
 +
=== SDIO slot (DWM module) - J14 ===
 +
 
 +
=== USB ports - J15 ===
 +
 
 +
=== I2C bus - J18 ===
 +
 
 +
=== GPIO - J19 ===
 +
 
 +
=== SPI bus - J20 ===
  
−
{| class="wikitable"
+
=== Audio - J21 ===
−
|-
+
 
−
!Pin#
+
=== JTAG - J16 ===
−
!Pin name
+
 
−
!Function
+
Bottom
−
!Notes
+
 
−
|-
+
== Software and hardware usage notes ==
−
|1
+
 
−
|MMC1_DAT2
+
=== Quick start===
−
|
+
This section describes how to quick start Dacu system.
−
|
+
 
−
|-
+
==== "Full control" mode ====
−
|2
+
# connect the serial cable, provided with the board, to J3 pin-strip connector
−
|MMC1_DAT3
+
# connect this cable to PC COM port through a NULL-modem cable (not provided)
−
|
+
# start your favourite terminal software on PC; communication parameters are:
−
|
+
#* baud rate: 115200 Bps
−
|-
+
#* data bits: 8
−
|3
+
#* stop bits: 1
−
|MMC1_CMD
+
#* parity: none
−
|
+
# connect the system to Ethernet LAN (RJ45 connector, J6)
−
|
+
# connect a 12Vcc power supply to to the power jack (JP2)
−
|-
+
 
−
|4
+
Once power has been applied, U-Boot bootloader will be executed and the following messages will be printed on serial console:
−
|MMC_3.3V
+
 
−
|
+
<pre class="board-terminal">
−
|
+
U-Boot 2009.11-00074-g34e0d5b-dirty (Jul 17 2012 - 11:00:55) [dacu-android-0.9.2]
−
|-
 
−
|5
 
−
|MMC1_CLK
 
−
|
 
−
|
 
−
|-
 
−
|6
 
−
|DGND
 
−
|
 
−
|
 
−
|-
 
−
|7
 
−
|MMC1_DAT0
 
−
|
 
−
|
 
−
|-
 
−
|8
 
−
|MMC1_DAT1
 
−
|
 
−
|
 
−
|-
 
−
|9, 11
 
−
|SD_SHIELD
 
−
|
 
−
|
 
−
|-
 
−
|10, 12
 
−
|MMC1_DAT5
 
−
|
 
−
|
 
−
|-
 
−
|}
 
  
−
=== SDIO slot (DWM module) - J14 ===
+
AM35xx-GP ES2.0, L3-165MHz
 +
DAVE Lizard board + LPDDR/NAND
 +
I2C:  ready
 +
DRAM:  256 MB
 +
Flash: 32 MB
 +
NAND:  1024 MiB
 +
In:    serial
 +
Out:  serial
 +
Err:  serial
 +
Die ID #7cf60001000000000160ae2d0b01e00a
 +
Net:  davinci_emac_initialize
 +
Ethernet PHY: GENERIC @ 0x11
 +
DaVinci EMAC                                                                                                     
 +
Hit any key to stop autoboot:  0                                                                                 
 +
=>
  
−
J14 is a Molex dual row 0.50mm pitch SlimStack™ receptacle. This connector is dedicated to the [[Wireless_Module_(DWM) | DWM add-on module]].The following table reports the connector's pinout:
+
</pre>
  
−
{| class="wikitable"  
+
Once the boot process has completed, you'll get the default Android "desktop":
−
|-
 
−
!Pin#
 
−
!Pin name
 
−
!Function
 
−
!Notes
 
−
|-
 
−
|1, 2
 
−
|5V
 
−
|
 
−
|
 
−
|-
 
−
|3, 4
 
−
|3.3V
 
−
|
 
−
|
 
−
|-
 
−
|5, 6, 9, 10, 19
 
−
|DGND
 
−
|
 
−
|
 
−
|-
 
−
|7
 
−
|MMC2_CMD
 
−
|
 
−
|
 
−
|-
 
−
|8
 
−
|MMC2_CLK
 
−
|
 
−
|
 
−
|-
 
−
|11
 
−
|MMC2_DAT0
 
−
|
 
−
|
 
−
|-
 
−
|12, 14, 16, 18, 20, 22
 
−
|N.C.
 
−
|Not connected
 
−
|
 
−
|-
 
−
|13
 
−
|MMC2_DAT1
 
−
|
 
−
|
 
−
|-
 
−
|15
 
−
|MMC2_DAT2
 
−
|
 
−
|
 
−
|-
 
−
|17
 
−
|MMC2_DAT3
 
−
|
 
−
|
 
−
|-
 
−
|21
 
−
|UART2_RX
 
−
|
 
−
|Mount option
 
−
|-
 
−
|23
 
−
|UART2_CTS
 
−
|
 
−
|Mount option
 
−
|-
 
−
|24
 
−
|BT_F5
 
−
|
 
−
|Connected to DSS_DATA20/DSI_DY1
 
−
|-
 
−
|25
 
−
|UART2_TX
 
−
|
 
−
|Mount option
 
−
|-
 
−
|26
 
−
|BT_F2
 
−
|
 
−
|Connected to DSS_DATA21/DSI_DX1
 
−
|-
 
−
|27
 
−
|UART2_RTS
 
−
|
 
−
|Mount option
 
−
|-
 
−
|28
 
−
|WIFI_IRQ
 
−
|
 
−
|Connected to DSS_DATA22/DSI_DY2
 
−
|-
 
−
|29
 
−
|BT_EN
 
−
|
 
−
|Connected to DSS_DATA19/DSI_DX0
 
−
|-
 
−
|30
 
−
|WIFI_EN
 
−
|
 
−
|Connected to DSS_DATA23/DSI_DX2
 
−
|-
 
−
|}
 
  
−
=== USB ports - J15 ===
+
[[File:Android-dacu-lock-screen.jpg|thumb|none|border|450px|Android default lock screen]]
  
−
J15 is a stacked, dual port USB Type A connector.
+
Moreover, you'll have immediate access to the Android shell, so you can use the shell commands to interact with the system and see the output messages on the console. Using the serial console doesn't prevent you from using also the adb tool to access the system.
  
−
==== USB port 0 (''high speed'') ====
+
==== "Normal" mode ====
 +
# connect the system to Ethernet LAN (RJ45 connector, J6)
 +
# connect a 12Vcc power supply to to the power jack (JP2)
  
−
USB port 0 is mapped on the '''lower''' USB connector. The following table reports the connector's pinout:
+
Once power has been applied, the system will boot loading the software components from the internal flash. Once the boot process has completed, you'll get the default Android "desktop":
  
−
{| class="wikitable"
+
You can now access the system using adb.
−
|-
 
−
!Pin#
 
−
!Pin name
 
−
!Function
 
−
!Notes
 
−
|-
 
−
|B1
 
−
|5V_USBH_0
 
−
|5V
 
−
|
 
−
|-
 
−
|B2
 
−
|USB0_DM
 
−
|USB0 Data -
 
−
|
 
−
|-
 
−
|B3
 
−
|USB0_DP
 
−
|USB0 Data +
 
−
|
 
−
|-
 
−
|B4
 
−
|DGND_USBH_0
 
−
|
 
−
|Ground
 
−
|-
 
−
|}
 
  
−
==== USB port 1 (''full speed'') ====
 
  
−
USB port 1 is mapped on the '''higher''' USB connector. The following table reports the connector's pinout:
+
==== Default IP address ====
  
−
{| class="wikitable"
+
{{ImportantMessage|text='''The default IP address is 192.168.0.122'''}}
−
|-
 
−
!Pin#
 
−
!Pin name
 
−
!Function
 
−
!Notes
 
−
|-
 
−
|A1
 
−
|5V_USBH_1
 
−
|5V
 
−
|
 
−
|-
 
−
|A2
 
−
|USBM1
 
−
|USB0 Data -
 
−
|
 
−
|-
 
−
|A3
 
−
|USBP1
 
−
|USB1 Data +
 
−
|
 
−
|-
 
−
|A4
 
−
|DGND_USBH_1
 
−
|Ground
 
−
|
 
−
|-
 
−
|}
 
  
−
=== I2C bus - J18 ===
 
  
−
J18 is a 8-pin 1.25mm pitch vertical header. The following table reports the connector's pinout:
+
==== Running the Android Debug Bridge (ADB) ====
  
−
{| class="wikitable"
+
[http://developer.android.com/tools/help/adb.html ADB] is a fundamental development tool and enables remote access to the Android device. ADB is provided with the Android SDK, so before using it you must install the SDK.
−
|-
 
−
!Pin#
 
−
!Pin name
 
−
!Function
 
−
!Notes
 
−
|-
 
−
|1, 5
 
−
|DGND
 
−
|Ground
 
−
|
 
−
|-
 
−
|4, 8
 
−
|3.3V
 
−
|3.3 V
 
−
|
 
−
|-
 
−
|2
 
−
|I2C2_SDA
 
−
|I2C #2 data
 
−
|
 
−
|-
 
−
|3
 
−
|I2C2_SCL
 
−
|I2C #2 clock
 
−
|
 
−
|-
 
−
|6
 
−
|I2C3_SDA
 
−
|I2C #3 data
 
−
|
 
−
|-
 
−
|7
 
−
|I2C3_SCL
 
−
|I2C #3 clock
 
−
|
 
−
|-
 
−
|}
 
  
−
=== GPIO - J19 ===
+
To establish the ADB connection, on a '''Linux''' host machine open a shell and launch the following commands:
  
−
J19 is a 8-pin 1.25mm pitch vertical header. The following table reports the connector's pinout:
+
<pre class="workstation-terminal">
 +
$ export PATH=${PATH}:<your_sdk_dir>/platform-tools
 +
$ export ADBHOST=<target's ip address>
 +
$ adb kill-server
 +
$ adb start-server
 +
</pre>
  
−
{| class="wikitable"
+
On a '''Windows''' host machine, open a shell and launch the following commands:
−
|-
 
−
!Pin#
 
−
!Pin name
 
−
!Function
 
−
!Notes
 
−
|-
 
−
|1, 8
 
−
|DGND
 
−
|Ground
 
−
|
 
−
|-
 
−
|2
 
−
|MCBSP1_CLKX
 
−
|GPIO
 
−
|
 
−
|-
 
−
|3
 
−
|MCBSP1_DX
 
−
|GPIO
 
−
|
 
−
|-
 
−
|4
 
−
|MCBSP1_FSX
 
−
|GPIO
 
−
|
 
−
|-
 
−
|5
 
−
|MCBSP3_DR
 
−
|GPIO
 
−
|
 
−
|-
 
−
|6
 
−
|MCBSP3_FSX
 
−
|GPIO
 
−
|
 
−
|-
 
−
|7
 
−
|MCBSP4_DR
 
−
|GPIO
 
−
|
 
−
|-
 
−
|}
 
  
−
=== SPI bus - J20 ===
+
<pre class="workstation-terminal">
 +
adb tcpip 5555
 +
adb connect <target's ip address>:5555
 +
adb kill-server
 +
adb start-server
 +
</pre>
  
−
J20 is a 8-pin 1.25mm pitch vertical header. The following table reports the connector's pinout:
 
  
−
{| class="wikitable"
+
To check the connection, please launch
−
|-
 
−
!Pin#
 
−
!Pin name
 
−
!Function
 
−
!Notes
 
−
|-
 
−
|1
 
−
|DGND
 
−
|Ground
 
−
|
 
−
|-
 
−
|2
 
−
|MCSPI1_CLK
 
−
|SPI1 clock
 
−
|
 
−
|-
 
−
|3
 
−
|MCSPI1_CS0
 
−
|SPI1 chip select #0
 
−
|
 
−
|-
 
−
|4
 
−
|MCSPI1_CS1
 
−
|SPI1 chip select #1
 
−
|
 
−
|-
 
−
|5
 
−
|MCSPI1_CS2
 
−
|SPI1 chip select #2
 
−
|
 
−
|-
 
−
|6
 
−
|MCSPI1_SOMI
 
−
|SPI1 slave output master input
 
−
|
 
−
|-
 
−
|7
 
−
|MCSPI1_SIMO
 
−
|SPI1 slave input master output
 
−
|
 
−
|-
 
−
|8
 
−
|3.3V
 
−
|3.3 V
 
−
|
 
−
|-
 
−
|}
 
  
−
=== Audio - J21 ===
+
<pre class="workstation-terminal">
 +
$ adb devices
 +
</pre>
  
−
J21 is a 8-pin 1.25mm pitch vertical header. The following table reports the connector's pinout:
+
If everything is working properly, you should see the following messages:  
  
−
{| class="wikitable"  
+
<pre class="workstation-terminal">
−
|-
+
$ adb devices
−
!Pin#
+
List of devices attached
−
!Pin name
+
emulator-5554    device
−
!Function
+
</pre>
−
!Notes
 
−
|-
 
−
|1
 
−
|AUD_PW2
 
−
|Audio amplifier VO 2
 
−
|
 
−
|-
 
−
|2
 
−
|AUD_PW1
 
−
|Audio amplifier VO 1
 
−
|
 
−
|-
 
−
|3, 5, 7
 
−
|DGND
 
−
|Ground
 
−
|
 
−
|-
 
−
|4
 
−
|LINEOUT_R
 
−
|Audio coded lineout right
 
−
|
 
−
|-
 
−
|6
 
−
|LINEOUT_L
 
−
|Audio coded lineout left
 
−
|
 
−
|-
 
−
|8
 
−
|MIC_INPUT
 
−
|Microphone input
 
−
|
 
−
|-
 
−
|}
 
  
−
=== JTAG - J16 ===
+
You can open a remote shell using the following command:
  
−
J16 is a standard 20-pin 2.54mm pitch header connector (bottom side). The following table reports the connector's pinout:
+
<pre class="workstation-terminal">
 +
$ adb shell
 +
</pre>
  
−
{| class="wikitable"
+
To install an application (in .apk format), you can use the following commmand:
−
|-
 
−
!Pin#
 
−
!Pin name
 
−
!Function
 
−
!Notes
 
−
|-
 
−
|1, 2
 
−
|3.3V
 
−
|3.3 V
 
−
|
 
−
|-
 
−
|3
 
−
|JTAG_TRSTn
 
−
|
 
−
|
 
−
|-
 
−
|5
 
−
|JTAG_TDI
 
−
|
 
−
|
 
−
|-
 
−
|7
 
−
|JTAG_TMS
 
−
|
 
−
|
 
−
|-
 
−
|9
 
−
|JTAG_TCK
 
−
|
 
−
|
 
−
|-
 
−
|11
 
−
|JTAG_RTCK
 
−
|
 
−
|
 
−
|-
 
−
|13
 
−
|JTAG_TDO
 
−
|
 
−
|
 
−
|-
 
−
|15
 
−
|JTAG_RST#
 
−
|
 
−
|Connected to MRSTn
 
−
|-
 
−
|4, 6, 8, 10, 12, 14, 16, 18, 20
 
−
|DGND
 
−
|Ground
 
−
|
 
−
|-
 
−
|17, 19
 
−
|N.A.
 
−
|Not connected
 
−
|
 
−
|-
 
−
|}
 
  
−
== Versions ==
+
<pre class="workstation-terminal">
−
As stated before, different versions of DACU board exist in order to support several SOMs and evaluation boards.
+
$ adb install <path to apk>
 +
</pre>
  
−
The following pages provide some additional information (including '''schematics''' and '''BOMs''') related to the mating of DACU with the supported SOMs.
+
===Useful Links===
−
* [[Dacu for the Diva SOM]]
 
−
* [[Dacu for the Axel SOM]]
 
  
−
==Layout==
+
[http://www.youtube.com/watch?v=VhvlZL46R5Q Video: Android Multitouch demo on Dacu]
−
* http://mirror.dave.eu/diva/dacu//dacu-CS091612C_component_view.pdf
 
  
−
==Mechanical==
+
[http://developer.android.com/tools/help/adb.html Android Debug Bridge]
−
* DXF: http://mirror.dave.eu/diva/dacu/dacu_2D_CS091612C.zip
 
−
* IDF (3D): http://mirror.dave.eu/diva/dacu//dacu_3D_CS091612C.zip
 

Revision as of 11:24, 25 March 2013

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Info Box
Dacu-top-view.png Applies to Dacu
Lizard.jpg Applies to Lizard
Android-logo.jpg Applies to Android

Introduction[edit | edit source]

Dacu is an ARM Cortex-A8 industrial tablet platform, built around a carrier board hosting the Lizard CPU module. The main system specifications are the following:

Microprocessor ARM Cortex-A8 @ 500 MHz
Power 12-24 V
Serial Ports 1x UART RS232 on DB9
1x UART RS232/RS485/CAN on DB9
1x UART RS232 on pin strip (debug port)
Ethernet 1x Fast Ethernet on RJ45 connector
Display 7" 800x480 LVDS
Storage 1x microSD slot
USB 1x USB Host full speed port
1x USB Host high speed port
Audio UDA1345 codec
Buses I2C
SPI
Other On board touch controller
Optional Wi-Fi module
GPIOs

Block Diagram[edit | edit source]

The following picture shows block diagram of Dacu:

Dacu-bd.png

Mechanicals[edit | edit source]

The following picture shows the mechanical layout of Dacu:

Dacu-top.png

Connectors pinout[edit | edit source]

The following section describes the on-board connectors and their pinout.

Power supply[edit | edit source]

Power is provided through the JP2 DC Power Jack. Power voltage range is [12-24 V]

Lizard module connectors – J1, J2[edit | edit source]

J1 and J2 are the mating connectors for Lizard CPU module.

UART1 - J4[edit | edit source]

J4 is a standard DB9 connector for the RS232 four-wires UART1 port. The following table reports the connector's pinout:

Pin# Pin name Function Notes
1, 4, 6, 9 N.A. N.A. Connected to protection diode array
2 UART_EXT_RX Receive line
3 UART_EXT_TX Transmit line
5 DGND Ground
7 UART_EXT_RTS Request To Send line
8 UART_EXT_CTS Clear To Send line

UART2 - J5[edit | edit source]

J5 is a standard DB9 connector for the configurable UART/CAN port. The board provides some mount options for the selection of the UART mode (RS232/RS422/RS485 with autodirection) or the CAN mode. The following table reports the connector's pinout:

Pin# Pin name RS232 mode RS422 mode RS485 mode CAN mode Notes
1 N.A./CAN_SHIELD Not connected Can shield
2 UART2_A/CAN_M UART2 rx line CAN bus low signal CAN mode primary mount option
3 UART2_Y/CAN_GND UART2 tx line Inverting driver output Inverting driver output CAN bus GND
4 N.A./CAN_M(opt) Not connected CAN bus low signal CAN mode secondary mount option
5 DGND/CAN_SHIELD Ground Ground Ground CAN bus shield
6 N.A./GND(opt) Not connected Ground CAN mode secondary mount option
7 UART2_Z/CAN_P UART2 Request To Send Noninverting driver output Noninverting driver output CAN bus high signal CAN mode primary mount option
8 UART2_B/CAN_P(opt) UART2 Clear To Send CAN bus high signal CAN mode secondary mount option
9 5V_BT/CAN_V+ 5V for bluetooth CAN bus +5V


Configuration Jumpers J26 e J27[edit | edit source]

These jumpers are used to configure the UART mode, as reported below:

Jumper RS232 RS422 RS485
1-3 open open closed
5-7 open closed open
9-11 open closed open
2-4 open open closed
6-8 open closed closed
10-12 open closed closed
13-15 open open closed
14-16 open open closed

UART3 - J25[edit | edit source]

J25 is a 10 pin (5x2x2.54mm) header connector. The following table reports the connector's pinout:

Pin# Pin name Function Notes
1, 2, 4, 6, 7, 8, 10 N.A. N.C. Not connected
3 UART3_RX Uart Receive line
5 UART3_TX Uart Transmit line
9 DGND Ground


Ethernet port - J6[edit | edit source]

J6 is a standard RJ45 connectors connected to the Lizard integrated ethernet controller and PHY.

Pin# Pin name Function Notes
1 ETH_CTTD Center Tap TX
2 ETH_TX+ Eth transmit data +
3 ETH_TX- Eth transmit data -
4 ETH_RX+ Eth receive data +
5 ETH_RX- Eth receive data -
6 ETH_CTRD Center Tap RX
7 DGND Ground
8 ETH_LED2 Eth speed led
9 DGND Ground
10 ETH_LED1 Eth activity led

LCD LVDS connector - J8[edit | edit source]

J8 is a Hirose (cod. DF13A-20DP-1.25V) double row 1.25mm pitch miniature crimping connector. The following table reports the connector's pinout:

Pin# Pin name Function Notes
1, 2 3.3V_LCD 3.3 V
3, 4, 7, 10, 13, 16, 19 DGND Ground
5 LCD_LVDS_D0- LVDS Data 0 -
6 LCD_LVDS_D0+ LVDS Data 0 +
8 LCD_LVDS_D1- LVDS Data 1 -
9 LCD_LVDS_D1+ LVDS Data 1 +
11 LCD_LVDS_D2- LVDS Data 2 -
12 LCD_LVDS_D2+ LVDS Data 2 +
14 LCD_LVDS_CLK- LVDS clock -
15 LCD_LVDS_CLK+ LVDS clock +
17 LCD_P17 Backlight PWM Connected to LCD_BKLT_PWM
18 LCD_P18 Connected to 5V_LCD
20 LCD_P20 Connected to ground
21, 22 LVDS_SHIELD LVDS shield

LCD Ziff connecor - J7[edit | edit source]

J7 is an optional connector for an Ampire AM-800480STMQW-TB0 7" 800x480 display. The following table reports the connector's pinout:

Pin# Pin name Function Notes
1, 2, 9, 13, 17, 21, 25, 39, 40 DGND Ground
3 LCD_PCLK LCD Pixel clock
4 LCD_IRQ
5 TSC_YP
6 LCD_R0
7 LCD_R1
8 LCD_R2
10 LCD_R3
11 LCD_R4
12 LCD_R5
14 LCD_G0
15 LCD_G1
16 LCD_G2
18 LCD_G3
19 LCD_G4
20 LCD_G5
22 LCD_B0
23 LCD_B1
24 LCD_B2
26 LCD_B3
27 LCD_B4
28 LCD_B5
29 TSC_YM
30 TSC_XM
31 TSC_XP
32 LCD_DE
33, 34 3.3V_LCD
35, 36, 37 5V_LCD
38 LCD_BKLT_PWM

Touch screen connecor - J28[edit | edit source]

J28 is a 1.0mm pitch 4-pin ZIF connector. The following table reports the connector's pinout:

Pin# Pin name Function Notes
1 TSC_YP Touch controller Y+
2 TSC_XP Touch controller X+
3 TSC_YM Touch controller Y-
4 TSC_XM Touch controller X-

MicroSD slot - J12[edit | edit source]

J12 is a Micro-SD card header.

SDIO slot (DWM module) - J14[edit | edit source]

USB ports - J15[edit | edit source]

I2C bus - J18[edit | edit source]

GPIO - J19[edit | edit source]

SPI bus - J20[edit | edit source]

Audio - J21[edit | edit source]

JTAG - J16[edit | edit source]

Bottom

Software and hardware usage notes[edit | edit source]

Quick start[edit | edit source]

This section describes how to quick start Dacu system.

"Full control" mode[edit | edit source]

  1. connect the serial cable, provided with the board, to J3 pin-strip connector
  2. connect this cable to PC COM port through a NULL-modem cable (not provided)
  3. start your favourite terminal software on PC; communication parameters are:
    • baud rate: 115200 Bps
    • data bits: 8
    • stop bits: 1
    • parity: none
  4. connect the system to Ethernet LAN (RJ45 connector, J6)
  5. connect a 12Vcc power supply to to the power jack (JP2)

Once power has been applied, U-Boot bootloader will be executed and the following messages will be printed on serial console: 

U-Boot 2009.11-00074-g34e0d5b-dirty (Jul 17 2012 - 11:00:55) [dacu-android-0.9.2]

AM35xx-GP ES2.0, L3-165MHz
DAVE Lizard board + LPDDR/NAND
I2C:   ready
DRAM:  256 MB
Flash: 32 MB
NAND:  1024 MiB
In:    serial
Out:   serial
Err:   serial
Die ID #7cf60001000000000160ae2d0b01e00a
Net:   davinci_emac_initialize
Ethernet PHY: GENERIC @ 0x11
DaVinci EMAC                                                                                                       
Hit any key to stop autoboot:  0                                                                                   
=>

Once the boot process has completed, you'll get the default Android "desktop":

Android default lock screen

Moreover, you'll have immediate access to the Android shell, so you can use the shell commands to interact with the system and see the output messages on the console. Using the serial console doesn't prevent you from using also the adb tool to access the system.

"Normal" mode[edit | edit source]

  1. connect the system to Ethernet LAN (RJ45 connector, J6)
  2. connect a 12Vcc power supply to to the power jack (JP2)

Once power has been applied, the system will boot loading the software components from the internal flash. Once the boot process has completed, you'll get the default Android "desktop":

You can now access the system using adb.


Default IP address[edit | edit source]

200px-Emblem-important.svg.png

The default IP address is 192.168.0.122


Running the Android Debug Bridge (ADB)[edit | edit source]

ADB is a fundamental development tool and enables remote access to the Android device. ADB is provided with the Android SDK, so before using it you must install the SDK.

To establish the ADB connection, on a Linux host machine open a shell and launch the following commands: 

$ export PATH=${PATH}:<your_sdk_dir>/platform-tools
$ export ADBHOST=<target's ip address>
$ adb kill-server
$ adb start-server

On a Windows host machine, open a shell and launch the following commands: 

adb tcpip 5555
adb connect <target's ip address>:5555
adb kill-server
adb start-server


To check the connection, please launch 

$ adb devices

If everything is working properly, you should see the following messages: 

$ adb devices
List of devices attached
emulator-5554    device

You can open a remote shell using the following command: 

$ adb shell

To install an application (in .apk format), you can use the following commmand: 

$ adb install <path to apk>

Useful Links[edit | edit source]

Video: Android Multitouch demo on Dacu

Android Debug Bridge

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