AN053 - GS1500M WIFI DIRECT APP NOTE PRELIMINARY

Transcription

1 AN053 - GS1500M WIFI DIRECT APP NOTE PRELIMINARY

2 1 Introduction The GAINSPAN GS1500M module offers offers a game changing cutting edge technology Wi-Fi direct to connect directly, making it simple and convenient to do things like print, share, sync and display. Wi-Fi Direct allows devices with the appropriate hardware to connect directly to each other via Wi-Fi without an intermediate access point. Devices can discover and connect to other devices when each device supports Wi-Fi Direct, then communicate over a speedy connection across distances much longer than a Bluetooth connection. This is useful for applications that share data among users, such as a multiplayer game or a photo sharing application. Wi-Fi Direct essentially embeds a software access point ("Soft AP"), into any device that must support Direct. The soft AP provides a version of Wi-Fi Protected Setup with its push-button or PIN-based setup. Wi-Fi Direct-certified devices can connect one-to-one or one-to-many and not all connected products need to be Wi-Fi Direct-certified. One Wi-Fi Direct enabled device can connect to legacy Wi-Fi certified devices. PRELIMINARY PAGE 2 OF 21

3 2 How Wi-Fi Direct Works Wi-Fi Direct device connections can happen anywhere, anytime - even when you don t have access to a Wi-Fi network. Your Wi-Fi Direct-certified device will signal to other devices in the area that it can make a connection. You can view available devices and ask them to connect. In some cases, you might receive an invitation to connect to another Wi-Fi Direct certified device. You can then decide whether to accept the invitation or not. In many devices the only action required is to push a connection button on the device, or accept a pop-up window request. Just like with traditional Wi-Fi networks, you should only connect with trusted devices or people. Once a connection is confirmed using Wi-Fi Protected Setup, the seamless and easy to use protocol for Wi-Fi connections, the devices make a secure connection to help protect your communication. This secure connection is completed by industry-standard WPA2 security, the very latest and best form of Wi- Fi security. Once two or more Wi-Fi Direct-certified devices connect directly, they have formed a Wi-Fi Direct Group. Wi-Fi Direct devices can connect to each other on a one-to-one basis, or as a group. A one-to-one connection will be very common for Wi-Fi Direct devices. You may use one-to-one connections to exchange content or share applications with a friend or co-worker. You may often connect your camera to a printer, your phone to your PC to sync calendars, or a gaming device to another gaming device in order to compete real-time. You may also link your phone to a display device such as a TV in order to view downloaded videos. Many Wi-Fi Direct devices can also connect with multiple devices at one time. This group connection is known as one-to-many because one device will act as the gate keeper to invite other devices and determine whether devices requesting to join the group will be allowed. Only devices that receive permission from the gatekeeper device are allowed to connect to other devices in the group. PRELIMINARY PAGE 3 OF 21

4 3 GS1500M WiFi-Direct Usage Wifi-Direct feature usage requires one GS1500M and Wi-Fi Direct compatible device. Wifi Direct compatible device could be mobile phones/tablets etc. Wifi Direct feature is available in wireless and network settings of wifi direct compatible mobile phones. Following sample screen capture shows the Samsung Galaxy S2 android phone Wi-Fi Direct settings option. Features supported in GS1500M: - Autonomous P2P GO (Group Owner) - P2P Group formation - P2P client - P2P Invitation (Optional feature) Optional Features Not supported in GS1500M: - Concurrent mode : A P2P Device that can concurrently operate as a WLAN STA in WLAN. PRELIMINARY PAGE 4 OF 21

5 NOTE : 1) In following usecases, LG-P970 android mobile is used for testing. Any wifi direct supported device can be used for testing. 2) GO intent value 15 in both nodes is not supported. Please refer 3_4_1 release notes. 3.1) Group form between GS1500M and LG android phone usecase Please follow the below mentioned steps to use WiFi Direct feature on GS1500M. 1) Start Wi-Fi direct feature in Wi-Fi Direct compatible device. 2) Execute the following set of sample AT commands on GS1500M. at+p2psetdev=15,81,11,11,2388,us at+p2psetwps=gainspan2-p2p,0006,0001, at+p2pfind=180,1 Once GSNode find the device it will display the information about the P2P device in the Teraterm as follows. p2p-dev-found f2:1c:13:cd:b2:5f,f2:1c:13:cd:b2:5f,000a,0050,f204,0005,lg-p970,11,180,27,08 Now you start Group formation on the Wi-Fi Direct compatible device 3) Once you find the P2P device, execute the following AT commands at+p2pgrpform= f2:1c:13:cd:b2:5f,11,4,,15,1,0 In the above command (f2:1c:13:cd:b2:5f) is the Mac address of Wi-Fi Direct compatible device. 4) Now you start Group formation on the Wi-Fi Direct compatible device. After negotiation one will become Group Owner. From the wifi Direct enabled device, select the device-name which is display on the screen and connect. Once connection is completed from wifi direct device to the GS1500M, following response will be displayed. at+p2pgrpform=f2:1c:13:cd:b2:5f,11,4,,15,1,0 p2p-prov-disc-req pbc f2:1c:13:cd:b2:5f,f2:1c:13:cd:b2:5f,000a,0050,f204,0005,lg-p970,0080,27,08 p2p-go-neg-complete GO,DIRECT-nA,11,02:1d:c9:00:22:3e,nLsGs9Av 3.2) Group form between TWO GS1500M nodes using PBC usecase PRELIMINARY PAGE 5 OF 21

6 First GS1500M configurations: at+p2psetdev=15,81,11,11,2388,us at+p2psetwps=gainspan1-p2p,0006,0001, at+p2pfind=180,1 wait till the GS1500M list down the wfd devices. p2p-dev-found 02:1d:c9:90:6a:40,02:1d:c9:90:6a:40,0006,0050,f204,0001,GAINSPAN2-P2P,11,2388,23,00 Run the following AT command to form the wifi direct group form.run the p2pgrpform with appropriate intent and AUTH value. Intent value should not be same in both GS1500M. AUTH value must be enable in one GS1500M and disabled in another GS1500M node. at+p2pgrpform=02:1d:c9:90:6a:40,11,4,,15,1,0 p2p-go-neg-complete GO,DIRECT-24,11,02:1d:c9:90:6a:64,FZ0m0pLM Second GS1500M configurations: at+p2psetdev=10,81,11,11,2388,us at+p2psetwps=gainspan2-p2p,0006,0001, at+p2pfind=180,1 wait till the GS1500M list down the wfd devices. p2p-dev-found 02:1d:c9:90:6a:64,02:1d:c9:90:6a:64,0006,0050,f204,0001,GAINSPAN1-P2P,11,2388,23,00 p2p-dev-found 24:77:03:77:a4:f5,24:77:03:77:a4:f5,0001,0050,f204,0001,INTELWIFI-PC,1,00,24,00 at+p2pgrpform=02:1d:c9:90:6a:64,11,4,,4,0,0 p2p-go-neg-complete Client,DIRECT-24,11,02:1d:c9:90:6a:64,FZ0m0pLM 3.3) Group form between TWO GS1500M nodes using Display and Keypad PIN method usecase First GS1500M Display configurations: at+wrxactive=1 at+p2psetdev=15,81,11,11,2388,us at+p2psetwps=gainspan1-p2p,0006,0001, PRELIMINARY PAGE 6 OF 21

7 at+p2pfind=180,1 p2p-dev-found 02:1d:c9:90:6a:40,02:1d:c9:90:6a:40,0006,0050,f204,0001,GAINSPAN2-P2P,11,2388,23,00 at+p2pgrpform=02:1d:c9:90:6a:40,6,2, ,15,1,0 <-Display method with WPS PIN and third argument WPS method as 2 p2p-go-neg-complete GO,DIRECT-AF,6,02:1d:c9:90:6a:64,AFiIGSpY Second GS1500M Keypad configurations: at+wrxactive=1 at+p2psetdev=7,81,11,11,2388,us at+p2psetwps=gainspan2-p2p,0006,0001, at+p2pfind=180,1 p2p-dev-found 02:1d:c9:90:6a:64,02:1d:c9:90:6a:64,0006,0050,f204,0001,GAINSPAN1-P2P,11,2388,23,00 at+p2pgrpform=02:1d:c9:90:6a:64,6,3, ,7,0,0 PIN and third argument WPS method as 3 <-Keypad method with WPS p2p-go-neg-complete Client,DIRECT-AF,6,02:1d:c9:90:6a:64,AFiIGSpY 3.4) Autonomous GO and client connecton using two GS1500M nodes usecase GS1500M Autonomous GO: at+wrxactive=1 at+p2psetdev=15,81,11,11,2388,us at+p2psetwps=gainspan1-p2p,0006,0001, at+p2pgostart=11,test <- GS1500M GO start command p2p-go-started DIRECT-sXtest,11,02:1d:c9:90:6a:64,1gcM6OVY, Wait till provision discovery request from any of the clients. Once it recives the request acknowledge the client with following AT command. p2p-prov-disc-req pbc 02:1d:c9:90:6a:40,02:1d:c9:90:6a:40,0006,0050,f204,0001,GAINSPAN2-P2P,0080,23,00 <- PD request from client at+p2pprovok GS1500M Client : PRELIMINARY PAGE 7 OF 21

8 at+wrxactive=1 at+p2psetdev=10,81,11,11,2388,us at+p2psetwps=gainspan2-p2p,0006,0001, at+p2pfind=180,0 p2p-dev-found 02:1d:c9:90:6a:64,02:1d:c9:90:6a:64,0006,0050,f204,0001,GAINSPAN1-P2P,11,2388,33,49 at+p2ppd=02:1d:c9:90:6a:64,0 <- Send the provision discovery request to GO p2p-prov-disc-resp pbc at+p2pjoin=02:1d:c9:90:6a:64,0 <-Client join the group DIRECT- p2p-join-success-client sxtest,11,02:1d:c9:90:6a:64,6022ee4a8009a2cc611d9c a194019a59d6cd7bb732cd51d8065cce at+ndhcp=1 IP SubNet Gateway : : ) Autonomous GO (GS node) and client (LG phone) connecton usecase GS1500M as Autonomous GO: at+wrxactive=1 at+p2psetdev=15,81,11,11,2388,us at+p2psetwps=gainspan1-p2p,0006,0001, at+p2pgostart=11,test p2p-go-started DIRECT-sXtest,11,02:1d:c9:90:6a:64,1gcM6OVY, Wait till provision discovery request from any of the clients (LG android phone). Once it recives the request, acknowledge the client with following AT command. p2p-prov-disc-req pbc f2:1c:13:cd:b2:5f,f2:1c:13:cd:b2:5f,000a,0050,f204,0005,lg-p970,0080,27,08 at+p2pprovok Android LG-P970 as Client: Turn on wifi direct feature in android LG phone. Please select the Settings->Wireless & networks->wi-fi Direct Settings-> Wi-Fi Direct. LG phone detects the GS1500M GO Select the listed GS1500M wifi direct device and connect it. PRELIMINARY PAGE 8 OF 21

9 3.6) Autonomous GO (LG phone) and GS client connecton usecase LG-P970 android phone as Autonomous GO: GS1500M Client : Turn on wifi direct feature in android LG phone. Please select the Settings->Wireless & networks->wi-fi Direct Settings-> Wi-Fi Direct. Turn on the Forced G/O mode option in LG phone. LG phone start listening to the client request for group join. Any request comes from the GS1500M, accept the request. After accepting the request, waits for client to join. Run at+p2pjoin command from the GS1500M client. at+wrxactive=1 at+p2psetdev=15,81,11,11,2388,us at+p2psetwps=gainspan2-p2p,0006,0001, at+p2pfind=180,0 p2p-dev-found f2:1c:13:cd:32:5f,f2:1c:13:cd:b2:5f,0006,0050,f204,0001,direct-59lg-p970,11,180,27,09 at+p2ppd=f2:1c:13:cd:32:5f,0 p2p-prov-disc-resp pbc at+p2pjoin=f2:1c:13:cd:b2:5f,0 p2p-join-success-client P970,11,f2:1c:13:cd:32:5f,f5ccc1d202682f854476fbdfd360a457d7fbd2b417eba0af9a0790bdd138d958 at+ndhcp=1 IP SubNet Gateway : : DIRECT-AWLG- NOTE : if at+p2pjoin AT command fails, keep retry the join command until LG-phone is in waiting for client connection. Some times at first attempt GS1500M fails. 3.7) Legacy mode to P2P mode switching and vice versa By default wireless mode will be in infrastructure mode i.e., 0. To make use of wifi direct, wireless mode need to be switch from 0 to the 3. Wifi direct wireless mode is 3. Wifi access point scanning will not work when wireless mode is set to Wi-Fi Direct mode i.e., 3. It works in case of wireless mode is set to infra. Please find the following AT commands to show the mode switching. PRELIMINARY PAGE 9 OF 21

10 at+wrxactive=1 at+p2psetdev=15,81,11,11,2388,us at+p2psetwps=gainspan2- P2P,0006,0001, <- wifi Direct mode at+p2pfind=180,0 p2p-dev-found f2:1c:13:cd:32:5f,f2:1c:13:cd:b2:5f,0006,0050,f204,0001,direct-tzlg-p970,11,180,27,09 p2p-dev-found 24:77:03:77:a4:f5,24:77:03:77:a4:f5,0001,0050,f204,0001,INTELWIFI-PC,1,00,24,00 at+p2ppd=f2:1c:13:cd:32:5f,0 p2p-prov-disc-resp pbc at+p2pjoin=f2:1c:13:cd:32:5f,0 p2p-join-success-client P970,11,f2:1c:13:cd:32:5f,c2446da129766dec35f e1d287ef9e8fd217ea3d6b529e1 at+ws <- In case of Wi-Fi Direct mode, scanning will not work ERROR at+wd at+wm=0 <- Switch the mode from Wi-Fi Direct to the infra mode at+ws=prashven <- In case of Infra mode, scanning will work BSSID SSID Channel Type RSSI Security 00:23:69:a3:e7:7a, Prashven No.Of AP Found:1 at+wrxactive=1 at+p2psetdev=15,81,11,11,2388,us, 11, INFRA, -49, WPA2-PERSONAL DIRECT-tZLG- at+p2psetwps=gainspan2- P2P,0006,0001, at+p2pfind=180,0 p2p-dev-found f2:1c:13:cd:32:5f,f2:1c:13:cd:b2:5f,0006,0050,f204,0001,direct-onlg-p970,11,180,27,09 at+ws ERROR at+p2ppd=f2:1c:13:cd:32:5f,0 PRELIMINARY PAGE 10 OF 21

11 p2p-prov-disc-resp pbc at+p2pjoin=f2:1c:13:cd:32:5f,0 p2p-join-fail ERROR at+p2pjoin=f2:1c:13:cd:32:5f,0 p2p-join-success-client P970,11,f2:1c:13:cd:32:5f,29a8f9f4bf207f4ebc9658b61cc32c90fe99eccd5fbf885e77820ee4c4959f8e DIRECT-OnLG- 3.8) P2P invitation method to form persistent group between GS1500M and Android phone (LG-P970) P2P invitation feature is to demonstrate the invitation method from GS1500M GO to the client. Step-1: Start GO in GS1500M and then Let client Joins : at+wrxactive=1 at+antenna=2 at+p2psetdev=15,81,11,11,2388,us at+p2psetwps=gainspan11-p2p,0006,0001, at+nset= , , at+dhcpsrvr=1 at+p2pgostart=11,6.1.3,1 p2p-go-started DIRECT-u36.1.3,11,02:1d:c9:90:6a:64,CL4KmwC6, at+apclientinfo=? No.Of Stations Connected=1 No MacAddr IP 1 f2:1c:13:cd:32:5f Step-2: Disconnect Client at+apclientinfo=? PRELIMINARY PAGE 11 OF 21

12 No.Of Stations Connected=0 Step-3: Dissolve the GO at+wd Step-4: Switch to non-p2p mode at+wm=0 Step-5: Scan for P2P device at+ws=direct- BSSID SSID Channel Type RSSI Security f2:1c:13:cd:b2:5f, DIRECT-, 11, INFRA, -30, WPA2-PERSONAL No.Of AP Found:1 Step-6: Switch to P2P mode and issue P2PFIND at+p2pfind=36000,0 p2p-dev-found f2:1c:13:cd:b2:5f,f2:1c:13:cd:b2:5f,000a,0050,f204,0005,lg-p970,11,180,27,08 at+p2pstopfind Step#7: re-invoke the persistent group and invite the device at+p2pgostart=,,,1 p2p-go-started DIRECT-u36.1.3,11,02:1d:c9:90:6d:59,CL4KmwC6, at+p2pinvite=f2:1c:13:cd:b2:5f p2p-prov-disc-req pbc f2:1c:13:cd:b2:5f,f2:1c:13:cd:b2:5f,000a,0050,f204,0005,lg-p970,0080,27,08 at+p2pprovok Step#8:Start Http Server in GS1500M GO PRELIMINARY PAGE 12 OF 21

13 at+webserver=1,admin,admin at+xmlparse=1 Step#9:DO HTTP get from client (Example client : Android phone LG-970): - From mobile web browser paste the following link On GS1500M GO, following request message will be displayed: /gainspan/profile/mcu after this message send the data to the client (LG-P970) as mentioned below. Note : LG-P970 web browser does not support xml format. Try with the clients which can support xml parsing. Following teraterm script should be run on GS1500M to send the XML data to the client. sendln'at+xmlsend=0,6,100,/gainspan/profile/mcu,test,3' send 27 send 'G0' sendln'0020first-tag:aaaaaaaaaa' send 27 send 'G0' sendln'0036second-tag:bcbcbcbcbcbcbcbcbcbcbcbcb' send 27 send 'G0' sendln'0024third-tag:efefefefefefef' PRELIMINARY PAGE 13 OF 21

14 4 GS1500M WiFi Direct (P2P) Commands 1) P2P mode configuration AT+WM=3 If the P2P mode is being started for the first time, the command AT+WM=3 must be issued after executing AT+P2PSETDEV and AT+P2PSETWPS commands. to switch back to WLAN STA mode, AT+WM=0 must be given. 2) Set P2P Device AT+P2PSETDEV=<go intent>,<reg class>,<listen channel>,<operating hannel>, <config methods>,<country> This command sets P2P device related attributes using single set command and this must be the first command for starting P2P operation. Parameters: -> go intent 0 to 15, group owner intent value to be used for group negotiation -> reg class 81 11g channels 1 to g channel a channels 36 to a channels 149 to 161 -> listen channel 1 byte value indicating channels 1 to 14 ->operating channel 1 byte value indicating channels 1 to 14 -> config methods 2 byte value indicating the WPS config methods supported -> country indicates the country to operate in. Valid country code strings are US,JP,FR,GB,AU,GE,IN. Country code must be in upper case. 3) Set WPS configuration AT+P2PSETWPS=<device name>,<primary device type category>,<primary device type subcategory>, <uuid>,[num secondary device types],[secondary dev type category],[secondary dev type subcategory], up to 5 tuples This command is used to set the important P2P WPS related attributes using single set command. Parameters: device name 32 character string. This is the device name used to uniquely identify the device Primary device type category - A 2 byte device category value. primary device type subcategory A 2 byte device subcategory value. Refer to P2P specification document for device subcategories. uuid 16 byte UUID 4) Set P2P Attribute PRELIMINARY PAGE 14 OF 21

15 AT+P2PSETATTR=<attribute ID><attribute value> The following attributes are supported: Attribute Id Attribute Attribute value Description attribute ID : 1 Intra BSS distribution attribute value : 0 disable,1 enable 5) P2P Find AT+P2PFIND=<timeout>,<type> Timeout : If timeout is not specified, then it is considered as infinite ie., the system will be in find phase forever or until stopped explicitly using at+p2pstopfind. If timeout is specified, then it indicates P2P find duration in seconds. Type 0 (social) or 1 (Progressive). social scan only channels 1,6,11. progressive scans all channels. Default is 0 ie., social. Command Response: The format is similar to scan results, as given below. p2p-dev-found<mac address>,<device address>,<primary device category>,<primary device subcategory>,<secondary device category>,<secondary device subcategory>,<device name>,<channel>,<config methods>,<device capabilities>,<group capabilities> For example, p2p-dev-found 02:b5:64:63:30:63,02:b5:64:63:30:63, 0006,0050,f204,0001,,wireless pc,6,2388,33,49 Note: 1. Mac addr,devaddr,type, config methods, device cap and group cap values are displayed in hex 2. P2P find is NOT supported in GO mode 6) P2P Stop Find AT+P2PSTOPFIND 7) P2P Listen AT+P2PLISTEN=[timeout] This command is used to start listening to P2P devices. In this state, it responds to provision discovery requests. 8) P2P Group Owner Start AT+P2PGOSTART=<channel>,[ssid-postfix],[persistent],[persistent group id] -> channel is the channel on which the GO must be started -> ssidpostfix is an optional parameter that specifies the postfix to be used for the ssid PRELIMINARY PAGE 15 OF 21

16 For example: AT+P2PGOSTART=6,gsnode The GO will be started on channel 6 with ssid DIRECT-gsnode. -> persistent flag is used to indicate if this is a persistent group. -> persistent group id gives the identifier of the persistent group. If the persistent group with the given id exists, then it is invoked; otherwise a new persistent group is created and stored with the given id. Currently only 1 persistent group information can be saved. Response: p2p-go-started<ssid>,<channel>,<go dev address>,<psk> <passphrase>,<display PIN> Typical example, p2p-go-started DIRECT-gsnode,6,00:1d:c9:01:02:03,xyghjsef, ) Invoking Persistent Group AT+P2PGOSTART Example usage given below: AT+P2PGOSTART=,,1,1 10) Provisioning Discovery AT+P2PPD=<peer address>,<config method> Sends provisioning discovery request to given peer with the given config method and wait for provisioning discovery response. Parameters: -> peer address: MAC address of the peer P2P device to send provisioning discovery request. -> config method: Config method to use. 0 Request peer to push button 1 request peer to display PIN that we would use for connect/join 2 request peer to enter PIN we would display Before issuing provision discovery command, make sure find is in progress, otherwise it will return ERROR. 11) Group Form (Group Owner Negotiation) AT+P2PGRPFORM=<peer address>,<channel>,<wps method>,[pin],[go intent],[auth],[persistent] Group formation includes group owner negotiation, provisioning and establishing data connection. Parameters: -> peer address: MAC address of the peer P2P device to connect to. -> channel: channel on which to connect. -> WPS method: PRELIMINARY PAGE 16 OF 21

17 a. 4: Use push button for provisioning(pbc) b. 2: Display configuration information. ie., Display a PIN that peer has to enter c. 3: Key-in configuration information. ie., enter the PIN using keypad, which was displayed by peer -> PIN : WPS pin, if the above selected option is DISPLAY or KEYPAD method. -> GO intent: GO intent value to be use for GO negotiation. If not specified, default value will be used. -> Auth: If auth is specified as 1, 1500 is in listen mode, and it can respond to GO- Negotiation requests -> persistent: Set if the group should be a persistent group. If not specified, it is taken as zero ie., not a persistent P2P group. Note: If any of the above parameter is not specified, then it will be considered to be not set. Response: 1. p2p-go-neg-complete client,<ssid>,<channel>,<go device address>,<passphrase> <psk> This format is used when a new group is created and the device becomes a client. Typical example, p2p-group-started client,direct-gs,6,02:1d:c9:01:02:03,gsdemo p2p-go-neg-complete GO,<ssid>,<channel>,<GO device address>,<passphrase> <psk> This format is used when a new group is created and the device becomes a GO. Typical example, p2p-go-neg-complete GO,DIRECT-aR,11,02:1d:c9:90:6a:bb,E4JWHKo3 3. p2p-go-neg-fail <reason> 11.1) Group Formation using PBC Method For group formation using PBC method, the following commands are entered on your device and peer device: own>at+p2pgrpform=02:1d:c9:01:02:03,6,4,15,1,0 peer>at+p2pgrpform=02:1d:c9:01:02:04,6,4,4,0,0 11.2) Group Formation using Display Method For group formation using Display Method, the following commands are entered on your device and peer device after discovering devices using p2pfind. At the peer where the PIN needs to be entered, the following command should be given: peer>at+p2pgrpform=02:1d:c9:01:02:04,6,1,<pin>,4,0,0 The GO negotiation should happen between the two devices followed by provisioning and connection and the following response is given out: own>p2p-group-started GO,DIRECT-gs,6,02:1d:c9:01:02:04,GSDemo123 PRELIMINARY PAGE 17 OF 21

18 peer>p2p-group-started client,direct-gs,6,02:1d:c9:01:02:03,gsdemo ) Group Formation using Keypad Method For group formation using Keypad method, the following commands are entered on your device and peer device after discovering devices using p2pfind. own>at+p2pgrpform=02:1d:c9:01:02:03,6,2,<pin>,15,1,0 At the peer where the PIN needs to be displayed, the following command should be given: peer>at+p2pgrpform=02:1d:c9:01:02:04,6,3,<pin>,4,0,0 The GO negotiation should happen between the two devices followed by provisioning and connection and then he following response is given out: own>p2p-group-started GO,DIRECT-gs,6,02:1d:c9:01:02:04,GSDemo123 peer>p2p-group-started client,direct-gs,6,02:1d:c9:01:02:03,gsdemo ) Provision Discovery Request Handling Upon receiving provisioning discovery request, depending on WPS config method, one of the following response is sent to host. PBC Method : p2p-prov-disc-req pbc<peer address>,<device address>,<primary device category>,<primary device subcategory>,<secondary device category>,<secondary device subcategory>,<device name>,<config methods>,<device capability>,<group capability> The user action upon receiving this should be following: AT+P2PPROV or AT+P2PPROVN Display Method : p2p-prov-disc-req display-pin <PIN> <peer address>,<device address>,>,<primary device category>,<primary device subcategory>,<secondary device category>,<secondary device subcategory>,<,<device name>,<config methods>,<device capability>,<group capability> The user action should be to show the PIN on a display and issue following command: AT+P2PGRPFORM= or AT+P2PPROV or AT+P2PPROVN Keypad Method : PRELIMINARY PAGE 18 OF 21

19 p2p-prov-disc-req enter-pin <peer address>,<device address>,>,<primary device category>,<primary device subcategory>,<secondary device category>,<secondary device subcategory>,<device name>,<config methods>,<device capability>,<group capability> The user action should be to enter PIN as follows: AT+P2PGRPFORM= or AT+P2PPROV=<PIN> or AT+P2PPROVN 12) Client Join AT+P2PJOIN=<GO device address or interface address>,<wps method>,[pin] Parameters: 1. GO device address or interface address device address or interface address of group owner 2. wps method WPS method to use for WPS procedure 0 pbc 1 display 2 keypad 3. pin is optional. It should be entered in following cases: a. If wps_method is keypad, then the entered pin is passed (displayed by peer) b. if wps_method is display, then the pin displayed by us is passed (keyed by peer) Response: 1. p2p-join-success-client <ssid>,<channel>,<go device address>, <psk> This format is used when the device connects as a client to an already existing group. Typical example, p2p-join-success-client DIRECT-gs,6,02:1d:c9:01:02:03, 6219f1d891f752c00bb4a850dd4a26bc1d74e79791a2db6da0f97ba2ca1921ca 2. p2p-join-fail <reason> Invitation Procedures 13) Invitation Procedures AT+P2PINVITE=<peer address>,[go device address] Sends an invitation request to the given peer address. Note: This does not support sending invitation to invoke a persistent group. Parameters: -> peer address address of peer device to which invitation has to be sent. PRELIMINARY PAGE 19 OF 21

20 -> GO device address Device address of Group Owner(GO ) of group to which the peer should join. 14) P2P Disconnect AT+WD Disconnect P2P client or Group owner. If the device is in P2P mode,then this command does the following, a. If the device is connected as a client to a group, then it disconnects b. If the device is operating as a GO, then it stops GO operation 15) P2P Store/Restore NW Connection AT+STORENWCON AT+RESTORENWCONN If a device is operating in P2P mode as a client or Group Owner(GO), then store/restore can be used to store the context, go to standby and restore the context. The device will perform the necessary setup and continue to operae in the previous mode. PRELIMINARY PAGE 20 OF 21

21 5 GS1500M WiFi Direct Benefits The technology behind Wi-Fi Direct builds on traditional Wi-Fi strengths like performance, security, ease of use and ubiquity, and adds features that optimize it for consumer uses that don t require access to an infrastructure network. Rather than connecting first to an infrastructure network and then connecting to another networked device, users can connect directly to those devices offering the services they need. This allows, for example, a mobile device such as a cellular phone to connect directly to a laptop, regardless of whether an infrastructure network is available to the user. Many consumers associate Wi-Fi with Internet connectivity. Devices certified for Wi-Fi Direct extend the technology s reach to include the simple, direct connections that many users may accomplish using cables today. Here are some of the benefits consumers will see from Wi-Fi Direct devices. Mobility & Portability: Wi-Fi Direct-certified devices connect anytime, anywhere. Immediate Utility: Users have the ability to create direct connections with the very first Wi-Fi Direct-certified device they bring home. For example, a new laptop certified for Wi-Fi Direct can create direct connections with the existing legacy Wi-Fi devices in the user s home. Ease of Use: Wi-Fi Direct devices have features that allow users to identify available devices and services before establishing a connection. Simple Secure Connections: Wi-Fi Protected Setup makes it simple to create securityprotected connections between devices. Users in most cases will be able to connect at the push of a button. PRELIMINARY PAGE 21 OF 21