User Manual

Redpine Signals, Inc. Page 48

Connect

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RS9110-N-11-24

Evaluation Board User Guide

Figure 14: Architecture with TCP/IP Enabled

4.1.2 Using the Wi-Fi module with TCP/IP stack bypassed

The TCP/IP stack in the WiFi module can be bypassed by sending a

software command from the Host to the module.

The “TCP bypass command” should be issued to convert the RS9110-N-

11-24 from a TCP/IP enabled module to a TCP/IP bypassed module. The

following should be taken care of:

1. The reference driver that the user should use for this mode is placed

inside RS.CN.xx.GENR.SP.x.x.x/Driver/Driver_TCP_Bypass

2. The API manual that should be used is placed in

RS.CN.xx.GENR.SP.x.x.x/Driver/Driver_TCP_Bypass/Documentation/

3. In this mode, the WiFi module presents itself as a standard network

interface, which would talk to the Host TCP/IP stack through the network

driver in the Host. For transmitting data to the air interface, the data

should be framed by the TCP/IP stack in the Host as an Ethernet frame,

and the WiFi module does only the WLAN framing on top of it. The

interface is according to standard networking protocols. For example :

http://www.makelinux.com/ldd3/chp-17-sect-3 describes the structure for

Linux. For successful sending and receiving of data, the MAC ID of the

module should be assigned to a field inside the net_device structure