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| History | |||
|---|---|---|---|
| Version | Issue Date | Notes | |
| 1.0.0 | Dec 2020 | First Release | |
Contents
DWMEdit
DWM is a Dave Wireless Module, more detail at the DWM page.
DescriptionEdit
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.
SignalsEdit
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 mappingEdit
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Section not completed yet |
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 usageEdit
The WiFi peripheral use the standard kernel interface and network protocol stack.
The BT peripheral use the standard kernel hci interface.