Difference between revisions of "DWS ADD-ON/DWS Hardware/Integration guide"

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! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History
 
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=== Typical scenario===
 
=== Typical scenario===
  
−
The following picture shows the conceptual block diagram of the application where the host is an Embedded System.
+
The following picture shows the conceptual block diagram of the application where the host is an Embedded PC.
  
 
[[File:DWS-embedded-linux-scenario.png|thumb|center|400px|Typical Embedded scenario]]
 
[[File:DWS-embedded-linux-scenario.png|thumb|center|400px|Typical Embedded scenario]]
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===Electrical guidelines===
 
===Electrical guidelines===
−
*SDIO lines
+
*xxxxxxxxxx Keep SDIO lines as short as possible.
−
**50ohm single ended impedance
+
*xxxxxxxxxx 5V and 3.3V rails can power up in any order
−
**keep lines as short as possible
+
*xxxxxxxxxx Keep WIFI_EN asserted during power-up sequence
−
**place series resistor on the carrier for impedance matching (tipical 22ohm)
 
−
*5V and 3.3V rails can power up in any order
 
−
**by default 5V rail is not used by the add-on
 
−
*keep WIFI_EN asserted during power-up sequence
 
  
−
=== Customizations ===
+
===Calibration process===
−
Many customization are potentially available for this module:
+
The radio interface of the DWS module is configured by several parameters. These parameters are set through a calibration process, that is described in detail xxxxxxxxxxxxxxx
−
* I/O with 1.8V levels
 
−
** applies to all the interfaces (SDIO, UART, EN)
 
−
* the module can be powered by the 5V rail only
 
−
* I2S interface can be made available for BT operations
 
−
Ask more information to [https://www.dave.eu/helpdesk technical support] about this topic.
 
−
 
 
−
==Calibration process==
 
−
The radio interface of the DWS module is configured by several parameters. These parameters are set in Linux user space.
 
−
 
 
−
==== Regulatory domain ====
 
−
For proper operation in the country where the system is deployed, the regulatory domain has to be configured. See [[DWS ADD-ON/Regulatory domain setup|this section]] for more details
 
  
 
==== MAC address ====
 
==== MAC address ====
−
The MAC address is fused inside the module and assured to be unique
+
The MAC address is set at calibration time for WLAN. xxxxxxxxxx
−
== Antenna selection ==
 
−
The WiFi module featured inside this add-on provides some precertifications that allow the final customer to decrease the amount of test to perform to obtain the needed certification.
 
−
 
 
−
To be able to use these precertifications a proper antenna has to be selected. Refer to the manufacturer Hardware Design Guide, linked in the References section of this page, or contact [https://www.dave.eu/helpdesk technical support] for more informations.
 
  
 
===Tested Antennas===
 
===Tested Antennas===
 
Following a list of tested and approved antennas:
 
Following a list of tested and approved antennas:
−
#Atel T-AT9552 with UFL to SMA adapter:[[File:T-AT9552.jpg|none|thumb|135x135px|Atel T-AT9552]][[File:1300-00041.png|thumb|135x135px|none| UFL to SMA adapter ]]
+
* Laird technology 001-0001 with UFL to SMA adapter [[File:001-0001.png|thumb|100px|none]] [[File:1300-00041.png|thumb|100px|none]]
−
#J2 Antennas 2JF0102P patch antenna[[File:2jf0102p-01.jpg|thumb|135x135px|J2 Antennas 2JF0102P|none]]
+
*
−
The antenna 1. has been used by the manufacturer for the precertification tests
+
{{ImportantMessage|text=Molex 47950-0011 valid only for '''No EU''' countries - see [https://www.lairdconnect.com/documentation/regulatory-information-tiwi-ble link][[File:4795.png|thumb|100px|none]] }}
  
−
The antenna 2. has been used by DAVE for the qualification tests
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=== References ===
  
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== References ==
+
----
−
* [https://www.telit.com/m2m-iot-products/wifi-bluetooth-modules/wi-fi-we866c6-p/ WE866C6-P Wi-Fi module] manufacturer's documentation page
 
−
** see the Hardware Design Guide for the antenna selection
 
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** see the Wi-Fi and Bluetooth Network Interface Card NIC User Guide for software implementations
 
  
 
[[Category:DWS]]
 
[[Category:DWS]]

Revision as of 13:33, 18 January 2022

HOME SOMs SBCs ToloMEO Embedded Assistant Sale-tag.pngGET A QUOTE Customer-service.pngONLINE HELPDESK
Roadmap IoT Services ML/AI services Embedded Design Services
History
Version Issue Date Notes
1.0.0 Jan 2022 First version



Integration guide[edit | edit source]

This section provides useful information and resources that let the system designer integrate the DWS module in the application very quickly.

Typical scenario[edit | edit source]

The following picture shows the conceptual block diagram of the application where the host is an Embedded PC.

Typical Embedded scenario
Real case scenario on AXEL Lite SOM Evaluation Kit

Electrical guidelines[edit | edit source]

  • xxxxxxxxxx Keep SDIO lines as short as possible.
  • xxxxxxxxxx 5V and 3.3V rails can power up in any order
  • xxxxxxxxxx Keep WIFI_EN asserted during power-up sequence

Calibration process[edit | edit source]

The radio interface of the DWS module is configured by several parameters. These parameters are set through a calibration process, that is described in detail xxxxxxxxxxxxxxx

MAC address[edit | edit source]

The MAC address is set at calibration time for WLAN. xxxxxxxxxx

Tested Antennas[edit | edit source]

Following a list of tested and approved antennas:

  • Laird technology 001-0001 with UFL to SMA adapter
    001-0001.png
    1300-00041.png
200px-Emblem-important.svg.png
Molex 47950-0011 valid only for No EU countries - see link
4795.png

References[edit | edit source]

HOME SOMs SBCs ToloMEO Embedded Assistant Sale-tag.pngGET A QUOTE Customer-service.pngONLINE HELPDESK
Roadmap IoT Services ML/AI services Embedded Design Services
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