SWRU576 January   2021 WL1801MOD , WL1805MOD , WL1807MOD , WL1831MOD , WL1835MOD , WL1837MOD

 

  1.   Trademarks
  2. 1 Introduction
    1. 1.1 Acronyms Used in This Document
  3. 2 Peer to Peer (P2P) Mode
    1. 2.1 P2P Device
      1. 2.1.1 Searching Phase
      2. 2.1.2 Negotiation
      3. 2.1.3 Group Formation
    2. 2.2 PSP Client
    3. 2.3 P2P GO
    4. 2.4 P2P Commands
      1. 2.4.1 P2P Commands Detailed Information
        1. 2.4.1.1 p2p_find
        2. 2.4.1.2 p2p_connect
        3. 2.4.1.3 p2p_listen
        4. 2.4.1.4 p2p_group_add
        5. 2.4.1.5 p2p_group_remove
        6. 2.4.1.6 p2p_peer
        7. 2.4.1.7 p2p_invite
      2. 2.4.2 P2P Event Details
    5. 2.5 P2P Use Cases
      1. 2.5.1 P2P Connection in PBC (Push Button Control)
      2. 2.5.2 Create Autonomous 1:2 P2P Group (Push button Control)
        1. 2.5.2.1 Assigning IP Address in P2P Mode Using DHCP Method
        2. 2.5.2.2 Create 1:2 P2P Group - Connect With PIN Code
        3. 2.5.2.3 P2P Invitation Procedure - Create Autonomous 1:2 P2P Group, (Push button Control)
  4. 3 Access Point (AP) and Peer-to-Peer (P2P) Multirole
    1. 3.1 Errata/Limitations
  5. 4 Multi BSSID (mBSSID)
    1. 4.1 Setup and Configuration
    2. 4.2 User Guide and Examples
  6. 5 Access Point (AP) Enhanced Low Power (ELP) Mode
    1. 5.1 Setup and Configuration
    2. 5.2 User Guide and Examples
    3. 5.3 Errata/Limitations
  7. 6 WiLink8 Wake on WLAN (WoWLAN) Feature
    1. 6.1 Mode of Operation
    2. 6.2 Adding "Suspend/Resume" WoW Mode to AM335x EVM
      1. 6.2.1 Patch Description
    3. 6.3 WoWLAN (Wake on WLAN) Mode Enable Procedure
      1. 6.3.1 Commands and Expected Output
      2. 6.3.2 Rx Filter Configuration
        1. 6.3.2.1 Rx Filter Configuration Examples
    4. 6.4 WoWLAN - Magic Packet
    5. 6.5 Block Acknowledgement (BA) Filter Setting
    6. 6.6 Hardware Modification Engineering Change Order (ECO) Request for AM335x EVM
  8. 7 WiLink8 Suspend Resume Mode
    1. 7.1 Suspend Resume Example With AM437x SDK
  9. 8 Access Point (AP) Dynamic Frequency Selection (DFS) Master Support
    1. 8.1 Setup and Configuration
    2. 8.2 User Guide & Examples
    3. 8.3 Errata/Limitations
  10. 9 Station Mode - Alternative Method, With iw Commands, Explained
    1. 9.1 Step 1- Check if the wlan0 Interface is Already Running
    2. 9.2 Step 2- Bringup wlan0 Interface if Not Running
    3. 9.3 Step 3 - Connect Device to Available Acces Point
  11. 10References

6.1 Mode of Operation

On Suspend state, the WL18xx chip will stay connected to Wi-Fi network and will wait for specific "magic" frame on the Wi-Fi media. Only upon receiving that frame, it will wake up the host. Two mode of operation are supported:

  • Suspend state: The chip will be held in shutdown mode, were the host disable the WLAN portion by keeping the WLAN_Enable signal OFF, in that mode the WL18xx consumes minimal current consumption.
  • WOWLAN state: The host is shutting down but the WLAN chip is being kept active (WLAN enable pin remains active). This allows the WL18xx firmware to remain active during suspend and if the system is configured to allow the WLAN interrupt to wake-up the host, it can trigger a system resume when a specific packet is received by the WL18xx firmware.

Before you enter suspend mode, you need to declare which event triggers the wake up. In this example, the trigger is set to “any”, which means any event (console activity, magic frame, and so forth) will wake up the board:

There are two options to resume from Suspend:

  • Serial console activity or other configured wakeup sources (keypad, touchscreen) will trigger resume.
  • Send Magic frame from other Station to the Station that is in suspend mode.