Difference between revisions of "ETRA SOM/ETRA Evaluation Kit/Interfaces and Connectors/DWM"

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!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History
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! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Issue Date
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<section end=History/>
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<section end="History" />
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<section begin=Body/>
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<section begin="Body" />
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−
==DWM interface ==
 
  
−
''TBD: sostituire le sezioni con le informazioni sull'uso della periferica e del suo connettore''
+
==DWM ==
−
''Nell'esempio di seguito c'è la descrizione dell'interfaccia UART/console''
+
DWM is a Dave Wireless Module, more detail at the [[Wireless Module (DWM)|DWM page]].
  
 
=== Description  ===
 
=== Description  ===
 +
The DWM interface is available on the Evaluation Kit at the connector ''J8.''
  
−
The DWM interface available on the Evaluation Kit at the connector ''TBD:Jxxx''.  
+
J8 is a 30-pins 0.50mm Pitch SlimStack™ Receptacle. This connector is dedicated to the DWM ''optional'' add-on module.  
  
−
''Jxx'' is a ''TBD:connector-type'' header connector for the RS232 two-wires UART3 port, used for debug purposes (bootloader and operating system serial console).
+
The module is built around an LS Research TiWi-BLE Integrated Transceiver Modules for WLAN 802.11 b/g/n and Bluetooth. The module implements the necessary PHY/MAC layers to support WLAN applications in conjunction with a host processor over a SDIO interface. The module also provides a Bluetooth platform through the HCI transport layer. Both WLAN and Bluetooth share the same antenna port.
  
  
Line 41: Line 32:
  
 
The following table describes the interface signals:
 
The following table describes the interface signals:
−
 
+
{| class="wikitable"
−
{| class="wikitable"  
+
!Pin#
−
! latexfontsize="scriptsize"| Pin#
+
!SOM Pin#
−
! latexfontsize="scriptsize"| SOM Pin#
+
!Pin name
−
! latexfontsize="scriptsize"| Pin name
+
!Pin function
−
! latexfontsize="scriptsize"| Pin function
+
!Pin Notes
−
! latexfontsize="scriptsize"| Pin Notes
+
|-
 +
|1, 2
 +
| -
 +
|5V_CB
 +
|5V power
 +
|
 +
|-
 +
|3, 4
 +
| -
 +
|3V3_CB
 +
|3.3V power
 +
|
 
|-
 
|-
−
|1,2,4,6,,7,8,10
+
|5, 6, 9, 10, 19
 
| -
 
| -
−
| N.A.
+
|DGND
−
| N.C.
+
|Ground
−
| Not connected
+
|
 +
|-
 +
|7
 +
|J18.45
 +
|WIFI_CMD
 +
|
 +
|
 +
|-
 +
|8
 +
|J18.47
 +
|WIFI_CLK
 +
|
 +
|
 
|-
 
|-
−
| 3
+
|11
−
| J1.189
+
|J18.37
−
| RS232_RX
+
|WIFI_DATA0
−
| Receive line
+
|
−
|  
+
|
 
|-
 
|-
−
| 3
+
|13
−
| J1.187
+
|J18.39
−
| RS232_TX
+
|WIFI_DATA1
−
| Transmit line
+
|
−
|  
+
|
 
|-
 
|-
−
| 9
+
|15
 +
|J18.41
 +
|WIFI_DATA2
 +
|
 +
|
 +
|-
 +
|17
 +
|J18.43
 +
|WIFI_DATA3
 +
|
 +
|
 +
|-
 +
|21
 +
|J18.80
 +
|BT_UART_RX
 +
|
 +
|Used only for BT peripheral
 +
|-
 +
|23
 +
|J18.76
 +
|BT_UART_CTS
 +
|
 +
|Used only for BT peripheral
 +
|-
 +
|24
 +
|J18.105
 +
|TIWI_BT_F5
 +
|
 +
|
 +
|-
 +
|25
 +
|J18.74
 +
|BT_UART_TX
 +
|
 +
|Used only for BT peripheral
 +
|-
 +
|26
 +
|J18.72
 +
|TIWI_BT_F2
 +
|
 +
|
 +
|-
 +
|27
 +
|J18.78
 +
|BT_UART_RTS
 +
|
 +
|Used only for BT peripheral
 +
|-
 +
|28
 +
|J18.70
 +
|TIWI_IRQ
 +
|
 +
|
 +
|-
 +
|29
 +
|J18.51
 +
|TIWI_BT_EN
 +
|
 +
|
 +
|-
 +
|30
 +
|J18.53
 +
|TIWI_EN
 +
|
 +
|
 +
|-
 +
|12, 14, 16, 18, 20, 22
 
| -
 
| -
−
| DGND
+
|N.C.
−
| Ground
+
|Not connected
−
|  
+
|
 
|}
 
|}
  
 
=== Device mapping ===
 
=== Device mapping ===
−
UART3 is mapped to <code>/dev/ttymxc2</code> device in Linux. The peripheral is used as the default serial console, both for the bootloader and the kernel.
+
The WiFi peripheral is mapped to the corresponding <code>wlan<X></code> device in Linux. The network peripheral is visible under the <code>ifconfig</code> network configuration utility.
 +
 
 +
The BT peripheral is mapped to <code>/dev/ttyxxx</code> device in Linux.
 +
 
 +
The control signals are managed by <code>rfkill</code> in Linux.
  
 
=== Device usage ===
 
=== Device usage ===
  
−
To connect to the debug serial port:
+
The WiFi peripheral use the standard kernel interface and network protocol stack.
  
−
# connect the DB9 adapter bracket to the J22 connector on the SBCX board
+
The BT peripheral use the standard kernel hci interface.
−
# connect a serial cable between DB9 connector and PC COM port through a NULL-modem cable (not provided)
 
−
# start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,1
 
  
 
----
 
----
  
 
[[Category:ETRA]]
 
[[Category:ETRA]]

Revision as of 16:10, 31 December 2020

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History
Version Issue Date Notes
1.0.0 Dec 2020 First Release


DWM[edit | edit source]

DWM is a Dave Wireless Module, more detail at the DWM page.

Description[edit | edit source]

The DWM interface is available on the Evaluation Kit at the connector J8.

J8 is a 30-pins 0.50mm Pitch SlimStack™ Receptacle. This connector is dedicated to the DWM optional add-on module.

The module is built around an LS Research TiWi-BLE Integrated Transceiver Modules for WLAN 802.11 b/g/n and Bluetooth. The module implements the necessary PHY/MAC layers to support WLAN applications in conjunction with a host processor over a SDIO interface. The module also provides a Bluetooth platform through the HCI transport layer. Both WLAN and Bluetooth share the same antenna port.


[[File:{Template:Nome-som-EVB-DWM-connector.png|thumb|center|500px|DWM connector]]

Signals[edit | edit source]

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
1, 2 - 5V_CB 5V power
3, 4 - 3V3_CB 3.3V power
5, 6, 9, 10, 19 - DGND Ground
7 J18.45 WIFI_CMD
8 J18.47 WIFI_CLK
11 J18.37 WIFI_DATA0
13 J18.39 WIFI_DATA1
15 J18.41 WIFI_DATA2
17 J18.43 WIFI_DATA3
21 J18.80 BT_UART_RX Used only for BT peripheral
23 J18.76 BT_UART_CTS Used only for BT peripheral
24 J18.105 TIWI_BT_F5
25 J18.74 BT_UART_TX Used only for BT peripheral
26 J18.72 TIWI_BT_F2
27 J18.78 BT_UART_RTS Used only for BT peripheral
28 J18.70 TIWI_IRQ
29 J18.51 TIWI_BT_EN
30 J18.53 TIWI_EN
12, 14, 16, 18, 20, 22 - N.C. Not connected

Device mapping[edit | edit source]

The WiFi peripheral is mapped to the corresponding wlan<X> device in Linux. The network peripheral is visible under the ifconfig network configuration utility.

The BT peripheral is mapped to /dev/ttyxxx device in Linux.

The control signals are managed by rfkill in Linux.

Device usage[edit | edit source]

The WiFi peripheral use the standard kernel interface and network protocol stack.

The BT peripheral use the standard kernel hci interface.

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Roadmap IoT Services ML/AI services Embedded Design Services
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