ORCA SOM/ORCA Evaluation Kit/Interfaces and Connectors/DWS

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History
Issue Date Notes

2021/12/10

First release
2024/08/09 DWS only support


Wi-Fi/BT interface[edit | edit source]

The Wi-Fi and BT socket interface supports the DWS a DAVE WiFi add-on providing WiFi 802.11 bgn and Bluetooth connectivity.

Description[edit | edit source]

The DWS interface is available on the Evaluation Kit at the connector J2.

J2 is a 30-pin 0.50mm Pitch SlimStack™ Receptacle. This connector is dedicated to the DWS optional add-on module.


DWS connector

Signals[edit | edit source]

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
1, 2 - 5V Power supply
3, 4 - 3.3V Power supply
5, 6, 9, 10, 19 - DGND Ground
7 J15.18 TIWI_MMC2_CMD
8 J15.16 TIWI_MMC2_CLK
11 J15.20 TIWI_MMC2_DAT0
13 J15.22 TIWI_MMC2_DAT1
15 J15.24 TIWI_MMC2_DAT2
17 J15.26 TIWI_MMC2_DAT3
21 J15.114 UART2_RX Used only for BT peripheral
23 J15.110 UART2_CTS Used only for BT peripheral
24 J15.36 TIWI_BT_F5 Used only for BT peripheral
25 J15.114 UART2_TX Used only for BT peripheral
26 J15.38 TIWI_BT_F2 Used only for BT peripheral
27 J15.116 UART2_RTS Used only for BT peripheral
28 J15.56 TIWI_IRQ
29 J15.34 TIWI_BT_EN Used only for BT peripheral
30 J15.32 TIWI_EN
12, 14, 16, 18, 20, 22 - N.C. Not connected

WiFi[edit | edit source]

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.

Device usage[edit | edit source]

The peripheral is used the standard kernel interface and network protocol stack.

Bluetooth[edit | edit source]

Device mapping[edit | edit source]

The BT peripheral is mapped to the /dev/ttymxc2 serial port in Linux. It can be mounted as an hci device with the hci tools commands.

Device usage[edit | edit source]

The peripheral is used by the standard kernel interface and BlueZ protocol stack.