WIZNET WIZFI220 Wireless LAN Module User Manual

WIZNET Co., LTD. Wireless LAN Module Users Manual

Users Manual

WizFi220 User Manual (WIZnet Co., Ltd.) WizFi220 User Manual (Version 1.0) ©2011 WIZnet Co., Ltd. All Rights Reserved. ☞ For more information, visit our website at http://www.wiznet.co.kr
WizFi220 User Manual (WIZnet Co., Ltd.) Certification Information KCC for Class B ITE INFORMATION TO THE USER This equipment has been tested for a Class B digital device. - Trade Name or Applicant : WIZnet, Co., Ltd. - Equipment Name : Wireless LAN Module - Model Number : WizFi220 - Derivative Model Number : WizFi220CA - Manufacturer / Country of Origin : WIZnet, Co., Ltd. / KOREA - Certification Number : KCC-CRM-WWW-WIZFI220 CE for Class B ITE INFORMATION TO THE USER Hereby, WIZnet. Declares that this WizFi220 is in compliance with the essential requirements and other relevant provisions of directive 1999/5/EC. WARNING: This is a class B product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
WizFi220 User Manual (WIZnet Co., Ltd.) Certification Information FCC for Class B ITE INFORMATION TO THE USER This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no Guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. FCC NOTICE TO USERS: This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:(1) This device may not cause harmful interference and (2) This device must accept any interference received, including interference that may cause undesired operation. WARNING: 1. This equipment may generate or use radio frequency energy. Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction manual. The user could lose the authority to operate this equipment if an unauthorized change or modification is made. 2. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
WizFi220 User Manual (WIZnet Co., Ltd.) Document Revision History Date Revision Changes 2011-05-24 V1.0 Official Release
WizFi220 User Manual (WIZnet Co., Ltd.) <Contents> 1. Overview ........................................................................................................................ 1 (1) Benefits and Features .............................................................................................. 2 (2) Specifications .......................................................................................................... 3 2. Hardware Specification ................................................................................................... 4 (1) Operating Conditions .............................................................................................. 4 (2) Digital Input Specifications ...................................................................................... 4 (3) Digital Output Specifications ................................................................................... 4 (4) I/O Digital Specification (Tri-State) ........................................................................... 5 (5) RTC Input Specifications .......................................................................................... 6 (6) RTC Output Specifications ....................................................................................... 6 (7) Internal 1.8V regulator ............................................................................................ 7 RF Specification .............................................................................................................. 8 (8) Block Diagram ......................................................................................................... 9 (9) Pin Description ...................................................................................................... 10 (10) Module Dimension .......................................................................................... 14 (11) Recommend Pad Dimension............................................................................ 15 (12) LED Indications ............................................................................................... 15 Application Guide ......................................................................................................... 16 (1) AP Scanning .......................................................................................................... 16 (2) Network Connection Management ........................................................................ 16 (3) Auto Connection Operation .................................................................................. 16 (4) Response Codes .................................................................................................... 17 (5) Use of GPIO10 ...................................................................................................... 18 (6) AT Command example .......................................................................................... 19 3. AT Commands .............................................................................................................. 20 (1) Command interface ............................................................................................... 20 (2) UART / adapter interface configuration ................................................................. 20 (3) Profile management .............................................................................................. 21 (4) Wi-Fi interface ....................................................................................................... 22 (5) Wi-Fi security ........................................................................................................ 22 (6) Wireless configuration ........................................................................................... 24 (7) Network interface .................................................................................................. 24 (8) Connection management ...................................................................................... 25 (9) Battery check ........................................................................................................ 26 (10) Power state management ................................................................................ 26 (11) Auto connection .............................................................................................. 26 (12) Provisioning .................................................................................................... 27 (13) Miscellaneous .................................................................................................. 27 4. Hardware Installation .................................................................................................... 29 5. Warranty ...................................................................................................................... 31
WizFi220 User Manual (WIZnet Co., Ltd.) <Table> TABLE 1. SPECIFICATIONS ................................................................................................................................... 3 TABLE 2. OPERATING CONDITIONS ................................................................................................................ 4 TABLE 3. DIGITAL INPUT SPECIFICATIONS .................................................................................................. 4 TABLE 4. DIGITAL OUTPUT SPECIFICATIONS ............................................................................................. 4 TABLE 5. I/O DIGITAL SPECIFICATION ............................................................................................................ 5 TABLE 6. RTC INPUT SPECIFICATIONS .......................................................................................................... 6 TABLE 7. RTC OUTPUT SPECIFICATIONS ..................................................................................................... 6 TABLE 8. INTERNAL 1.8V REGULATOR .......................................................................................................... 7 TABLE 9. RF SPECIFICATION............................................................................................................................... 8 TABLE 10. PIN DESCRIPTION ........................................................................................................................... 13 TABLE 11. LED INDICATIONS ............................................................................................................................ 15 TABLE 12. RESPONSE CODES ........................................................................................................................ 18 TABLE 13. AT COMMAND EXAMPLE .............................................................................................................. 19 TABLE 14. COMMAND INTERFACE ................................................................................................................ 20 TABLE 15. UART / ADAPTER INTERFACE CONFIGURATION ............................................................ 21 TABLE 16. PROFILE MANAGEMENT .............................................................................................................. 21 TABLE 17. WI-FI INTERFACE ............................................................................................................................. 22 TABLE 18. WI-FI SECURITY ............................................................................................................................... 23 TABLE 19. WIRELESS CONFIGURATION ..................................................................................................... 24 TABLE 20. NETWORK INTERFACE ................................................................................................................. 24 TABLE 21. CONNECTION MANAGEMENT ................................................................................................... 26 TABLE 22. BATTERY CHECK ............................................................................................................................. 26 TABLE 23. POWER STATE MANAGEMENT ................................................................................................. 26 TABLE 24. AUTO CONNECTION ....................................................................................................................... 27 TABLE 25. PROVISIONING ................................................................................................................................. 27 TABLE 26. MISCELLANEOUS ............................................................................................................................ 28
WizFi220 User Manual (WIZnet Co., Ltd.) <Figure> FIGURE 1. BASIC DIAGRAM ............................................... 오류! 책갈피가 정의되어 있지 않습니다. FIGURE 2. BLOCK DIAGRAM ............................................................................................................................... 9 FIGURE 3. PIN DESCRIPTION .......................................................................................................................... 10 FIGURE 4. MODULE DIMENSION .................................................................................................................... 14 FIGURE 5. RECOMMEND PAD DIMENSION ............................................................................................... 15 FIGURE 6. VIN = BATTERY.................................................... 오류! 책갈피가 정의되어 있지 않습니다. FIGURE 7. VIN = AC ADAPTOR ........................................... 오류! 책갈피가 정의되어 있지 않습니다. FIGURE 8. FIRMWARE DOWNLOAD ............................... 오류! 책갈피가 정의되어 있지 않습니다. FIGURE 9. INTERFACE .......................................................... 오류! 책갈피가 정의되어 있지 않습니다. FIGURE 10. FACTORY DEFAULT AND AD HOC MODE ......................................................................... 18
WizFi 210 User Manual (WIZnet Co., Ltd.) 1 1. Overview The WizFi220 family of fully certified modules offers a quick, easy, and cost effective way for device and appliance manufacturers to add Wi-Fi capabilities to their products. The module provides serial UART interface which enables connection to any embedded design utilizing an 8/16/32-bit microcontroller via simple commands. The WizFi220 is an ideal solution for organizations with limited or no Wi-Fi or RF expertise, as it not only dramatically reduces RF design time but also removes the burden of testing and certification; allowing customers to focus on their core application, product, or expertise. The module supports data rates up to 11 Mbps, and is compliant with 802.11b. The WizFi220 provides customers the mean to evaluate the capabilities of ultra-low power wireless system-on-a-chip and the Serial to Wi-Fi embedded software for Wi-Fi networks. The Serial to Wi-Fi embedded software allows devices and appliance manufacturers to easily add Wi-Fi capabilities to their products with minor impact on the host microcontroller firmware. The WizFi220 provides all the hardware and software necessary to quickly set up a serial (UART) based link to a PC or external microcontroller. The WizFi220 is a RF-enhanced Product. Except for [RF Output Power], the WizFi220 is similar in management and development to the WizFi210. In other words, the WizFi220 will consume more power but it has the improved WiFi range.
WizFi 210 User Manual (WIZnet Co., Ltd.) 2 (1) Benefits and Features  Brings Wi-Fi connectivity to any device with a microcontroller and serial HOST interface (UART)  Minimal Serial to Wi-Fi “driver” footprint on host microcontroller and minor changes to existing host MCU firmware  Offloading of smaller host microcontrollers from the Wi-Fi and TCP/ IP networking  Simple AT commands for configuration and data communication  DHCP/Static IP, TCP/UDP, Server/Client, DNS  Reduces development time, testing and certification burden, accelerating time to market  Easy device provisioning through our utility or Wi-Fi Protected Set-up (WPS)  Ultra low power consumption through dynamic power management  Operates with standard 802.11b access points at speed up to 11 Mbps (802.11b)  802.11i Security (WEP, WPA, WPA2-PSK, Enterprise)  Rich I/O interfaces (SPI, UART, GPIO, I2C, ADC, JTAG)  Low power modes, Alarm Input for wake-up  High-throughput hardware AES and RC4 encryption/decryption engines
WizFi 210 User Manual (WIZnet Co., Ltd.) 3 (2) Specifications Specifications Description Radio Protocol IEEE 802.11b Compatible Supported Data Rates 11, 5.5, 2, 1 Mbps (802.11 b) Modulation DSSS and CCK RF Operating Frequency 2.412 - 2.462 GHz Antenna Options U.FL connector for external antenna Networking Protocols UDP, TCP/IP (IPv4), DHCP, ARP, DNS, HTTP/HTTPS Client and Server(*) Power Consumption (Typical) Standby = 34.0 µA Receive = 124.0 mA Transmit = 290.0 mA RF Output Power (Typical) 17dBm ± 1.5dB Security Protocols WEP, WPA/WPA2 – PSK, Enterprise, EAP-FAST, EAP-TLS, EAP-TTLS, PEAP I/O Interface UART, SPI(*), I2C(*), WAKE, ALARM, GPIOs Power Source 3.3V Dimensions 32 x 23.5 x 3 mm Table 1. Specifications (*) is supported by software customizing.
WizFi 210 User Manual (WIZnet Co., Ltd.) 4 2. Hardware Specification (1) Operating Conditions Min Typ Max Unit Operating Ambient Range -40 +85 °C RTC Supply Voltage 1.2 3.3 3.6 V Single Supply Voltage 3.0 3.3 3.6 V Table 2. Operating Conditions (2) Digital Input Specifications Min Typ Max UnitIO Supply Voltage 1.62/3 1.8/3.3 1.98/3.63 V Input Low Voltage (VIL) -0.3 0.25VDDIO V Input High Voltage (VIH) 0.8VDDIO VDDIO V Schmitt trig. Low to High threshold point (VT+) 1.5 V Schmitt trig. High to Low threshold point (VT-) 1 V Table 3. Digital Input Specifications (3) Digital Output Specifications Min Typ Max UnitIO Supply Voltage 1.62/3 1.8/3.3 1.98/3.63 V Output Low Voltage (VIL) 0 0.4 V Output High Voltage (VIH) 1.3 VDDIO V Output rise time (tTLH) 7 ns Output fall time (tTHL) 7 ns Table 4. Digital Output Specifications
WizFi 210 User Manual (WIZnet Co., Ltd.) 5 (4) I/O Digital Specification (Tri-State) Min Typ Max Unit IO Supply Voltage 1.62/3 1.8/3.3 1.98/3.63 Input Low Voltage (VIL) -0.3 0.25VDDIO V Input High Voltage (VIH) 0.8VDDIO VDDIO V Schmitt trig. Low to High threshold point (VT+) 1.5 V Schmitt trig. High to Low threshold point (VT-) 1 V Pull-Up Resistor (Ru) 0.05 1 MΩ Pull-Down Resistor (Rd) 0.05 1 V Output Low Voltage (VOL) 0 0.4 V Output High Voltage (VOH) 1.3 VDDIO ns Output rise time @ 3.3V (tToLH) 7 ns Output fall time @ 3.3V (tToHL) 7 ns Input rise time (tTiLH) 7 ns Input fall time (tTiHL) 7 ns Table 5. I/O Digital Specification
WizFi 210 User Manual (WIZnet Co., Ltd.) 6 (5) RTC Input Specifications Min Typ Max Unit RTC Supply Voltage (VDDRTC) 1.2 3.6 V Input Low Voltage (VIL) -0.3 0.25VDDRTC V Input High Voltage (VIH) 0.8VDDRTC VDDRTC V Schmitt trig. Low to High threshold point (VT+) 0.57VDDRTC 0.68VDDRTC V Schmitt trig. High to Low threshold point (VT-) 0.27VDDRTC 0.35VDDRTC V Table 6. RTC Input Specifications (6) RTC Output Specifications Min Typ Max Unit RTC Supply Voltage (VDDRTC) 1.2 3.6 V Output Low Voltage (VOL) 0 0.4 V Output High Voltage (VOH) 0.8VDDRTC VDDRTC V Output rise time (tTLH) 19 142 ns Output fall time (tTHL) 21 195 ns Table 7. RTC Output Specifications
WizFi 210 User Manual (WIZnet Co., Ltd.) 7 (7) Internal 1.8V regulator Min Typ Max UnitOutput Voltage (VOUT_1V8) 1.8 V Maximum Output Current (IVOUT_1V8) 250 300 mA 1.8V Regulator Enable "H" Voltage (EN_1V8) 1.0 VIN_3V3 V 1.8V Regulator Enable "L" Voltage (EN_1V8) 0 0.25 V Table 8. Internal 1.8V regulator
WizFi 210 User Manual (WIZnet Co., Ltd.) 8 RF Specification Specification Description Modulation Technique DSSS for 1, 2Mbps CCK for 5.5, 11Mbps Data Rate IEEE 802.11b: 1, 2, 5.5 and 11Mbps Receive Sensitivity -84dBm ± 1dB @ 11Mbps -88dBm ± 1dB @ 5.5Mbps -90dBm ± 1dB @ 2Mbps -94dBm ± 1dB @ 1Mbps Transmit power (Average) 802.11b : 17dBm ± 1.5dB @ 11Mbps Frequency Range USA: 2.400 ~ 2.483GHz Europe: 2.400 ~ 2.483GHz Japan: 2.400 ~ 2.497GHz China: 2.400 ~ 2.483GHz Operating Channels USA/Canada: 11 (1~11) Major Europe Countries: 13 (1~13) France: 4 (10~13) Japan: 14 for IEEE 802.11b (1~13 or 14th), 13 for IEEE 802.11g (1~13) Korea/China: 13 (1~13) Antenna U.FL External Antenna Support External Antenna Pad Support 1dBi Chip Antenna (Optional) Table 9. RF Specification
WizFi 210 User Manual (WIZnet Co., Ltd.) 9 (8) Block Diagram Figure 1. Block Diagram
WizFi 210 User Manual (WIZnet Co., Ltd.) 10(9) Pin Description Figure 2. Pin description PIN NAME I/O IN BIAS DESCRIPTION 1 GND P NA Ground 2 JTAG_TCK (*) I Pull-up Joint Test Action Group Test Clock 3 JTAG_TDO (*) O NA Joint Test Action Group Test Data Out 4 JTAG_TDI (*) I Pull-up Joint Test Action Group Test Data In 5 JTAG_TMS (*) I Pull-up Joint Test Action Group Test Mode Select 6 JTAG_NTRST (*) I Pull-up Joint Test Action Group Test Mode Reset Active Low 7 ALARM1 I Pull-down Embedded Real Time Clock Wake Up Input 1 8 RTC_OUT1 (*) O NA Embedded Real Time Clock Wake Up Output 1 9 VBAT P NA Embedded Real Time Clock Power Supply
WizFi 210 User Manual (WIZnet Co., Ltd.) 1110 DC_DC_CNTL O NA VIN_3V3 Regulator Control Output 11 ALARM2 (*) I Pull-down Embedded Real Time Clock Wake Up Input 2 12 ADC1 (*) I NA General Analog to Digital Converter 1 13 ADC2 (*) I NA General Analog to Digital Converter 2 14 MSPI_MISO/GPIO6 (*) I Pull-down Master Serial Peripheral Interface Bus Data Input / General Purpose Input Output 15 MSPI_MOSI/GPIO7 (*) O Pull-down Master Serial Peripheral Interface Bus Data Output / General Purpose Input Output 16 MSPI_CLK/GPIO5 (*) O Pull-down Master Serial Peripheral Interface Bus Clock / General Purpose Input Output 17 VOUT_1V8 (*) P NA Internal 1.8V Vout 18 GND P NA Ground 19 MSPI_CS0/GPIO4 (*) O Pull-down Master Serial Peripheral Interface Bus Chip Select 0 / General Purpose Input Output 20 MSPI_CS1/GPIO13 (*) O Pull-down Master Serial Peripheral Interface Bus Chip Select 1 / General Purpose Input Output 21 I2C_CLK/GPIO9 (*) IO Pull-down Inter-Integrated Circuit Clock / General Purpose Input Output 22 PWM0/GPIO10 O Pull-down Pulse Width Modulator / General Purpose Input Out-put 23 GPIO19/CLK_44MHz (*) I Pull-down Internal Clock Circuitry Test Point / General Purpose Input Output 24 GPIO20/CLK_22MHz (*) I Pull-down Internal Clock Circuitry Test Point / General Purpose Input Output 25 GPIO21/CLK_11MHz (*) I Pull-down Internal Clock Circuitry Test Point / General Purpose Input Output 26 I2C_DATA/GPIO8 (*) IO Pull-down Inter-Integrated Circuit Data / General Purpose Input Output 27 SSPI_MISO (*) O Pull-up SPI Slave Transmit Data Output to the HOST 28 SSPI_CLK (*) I Pull-up SPI Slave Clock Input from the HOST 29 SSPI_CS (*) I Pull-up SPI Slave Chip Select Input from the HOST
WizFi 210 User Manual (WIZnet Co., Ltd.) 1230 SSPI_MOSI (*) I Pull-down SPI Slave Receive Data Input from the HOST 31 GND P NA Ground 32 VIN_3V3 P NA Single Supply Port 33 EN_1V8 I NA Internal 1.8V regulator enable port-Active High 34 VDDIO(**) P NA All I/O voltage domain (can be tied to VIN_3V3 or tied to HOST I/O supply) 35 EXT_RESETN (*) IO Pull-up Module Hardware Reset Input and Power Supply Reset Monitor Indictor 36 UART1_CTS/GPIO26 (*) I Pull-downUniversal Asynchronous Receiver Transmitter 1 Clear to Send Input / General Purpose Input Output 37 UART1_RTS/GPIO27 O Pull-downUniversal Asynchronous Receiver Transmitter 1 Request to Send Output / General Purpose Input Out-put / Firmware Program Mode 38 UART1_RX/GPIO3 (*) I Pull-downUniversal Asynchronous Receiver Transmitter 1 Receive Input / General Purpose Input Output 39 UART1_TX/GPIO2 (*) O Pull-downUniversal Asynchronous Receiver Transmitter 1 Transmitter Output / General Purpose Input Output 40 UART0_TX/GPIO1 O Pull-downUniversal Asynchronous Receiver Transmitter 0 Transmitter Output / General Purpose Input Output 41 UART0_RTS/GPIO25 O Pull-downUniversal Asynchronous Receiver Transmitter 0 Request to Send Output / General Purpose Input Out-put 42 UART0_RX/GPIO0 I Pull-downUniversal Asynchronous Receiver Transmitter 0 Receive Input / General Purpose Input Output 43 UART0_CTS/GPIO24 I Pull-downUniversal Asynchronous Receiver Transmitter 0 Clear to Send Input / General Purpose Input Output
WizFi 210 User Manual (WIZnet Co., Ltd.) 1344 GPIO31 IO Pull-down General Purpose Input Output 45 GPIO30 IO Pull-down General Purpose Input Output 46 GPIO29 (*) IO Pull-down General Purpose Input Output 47 GPIO28 IO Pull-down General Purpose Input Output 48 GND P NA Ground 49 EXT-ANT IO NA External Antenna pad Table 10. Pin description (*) is not available in this version. (**) To allow for design flexibility and support for multiple sensors with different voltages, the VDDIO banks are split, such that some of the VDDIO banks can be 1.8 V and some can be 3.3 V. If a VDDIO bank is connected to 1.8 V then the corresponding I/O signals for that bank should be driven at the same voltage. VDDIO Bank 1 : GPIO28~29, JTAG, VDDIO Bank 2 : SPI1(Master), Misc VDDIO Bank 3 : GPIO18~23, PWM VDDIO Bank 4 : I2C, SPI2(Slave), GPIO16~17 VDDIO Bank 5 : UART0~1 VDDIO Bank 6 : GPIO30~31
WizFi 210 User Manual (WIZnet Co., Ltd.) 14(10) Module Dimension Figure 3. Module dimension
WizFi 210 User Manual (WIZnet Co., Ltd.) 15(11) Recommend Pad Dimension Figure 4. Recommend Pad Dimension (12) LED Indications Condition D3(PWR) D1(GPIO 30) D2(GPIO 31) D4 (GPIO 28) ON Solid Power On - Serial-To-WiFi OK Associated Blink(-1-) - Serial Data Rx (Data Mode) - Blink(-1-1-) - Serial Data Rx (AT Command Mode) - - OFF No Power - Serial-To-WiFi Error Not Associated Table 11. LED Indications
WizFi 210 User Manual (WIZnet Co., Ltd.) 16Application Guide (1) AP Scanning The Serial2WiFi interface can instruct the Wi-Fi radio to scan for access points and ad hoc networks with a specified SSID, BSSID and/or channel for a specified scan time. Scanning can be performed to find networks with a specific SSID, BSSID, networks operating on a specific radio channel, or a combination of these constraints. (2) Network Connection Management The connection management module is responsible for processing connection-related events. The interface provides UDP and TCP sockets (similar to the familiar BSD network sockets). Each socket may represent either a server or client connection. Each such connection has a unique, single-digit hexadecimal value (0 to 15) for the CID. The allowed maximum number of connections (up to 16) may be specified at compile time. Note that this single pool of CID‟s is used for TCP, UDP, Server and Client connections (3) Auto Connection Operation Auto Connecttion acts as a cable replacement insofar that the interface acts like a serial interface and no commands or user intervention are required for connection management. In this mode, the Station automatically builds the wireless and network connections by using parameter values from the current active Profile, then transfers data transparently between the Host and Target in data mode. No status information is sent to the Host. The operation modes of WizFi220 are as below Command Mode : in which data is interpreted as commands to control WizFi220 Data Mode : in which serial data is sent to the WiFi interface In Data mode the Adapter: ► Receives characters from the serial port and transmits them over the connection ► Receives data from the connection and transmits it on the serial port The serial host may gain control of the interface by issuing the escape sequence “+++”, followed by a one-second gap where no characters are received on the serial port. When this sequence is encountered, the Adapter exits data mode and resumes command processing. The host then makes changes in the network configuration or other parameters
WizFi 210 User Manual (WIZnet Co., Ltd.) 17as needed. However, the Adapter does not accept any new TCP/UDP client/server or data connection requests. The ATO command (terminated by the ASCII character “O”, not the number 0) is used to return to data mode. Applying the “AT+XEHT=1” command (Enable Hardware Trigger), you can change between data mode and command mode using GPIO 10, without escape sequence (“+++”). Using D2(GPIO 31), D4(GPIO 28) of WizFi220, you can see if the WizFi220 is associated to the AP and if serial-to-wifi network channel is normal. And applying the “AT+XDUM=1” command (Disable UART Message), all UART messages are blocked in data mode. In this situation, you have to check the signal of GPIO 28 and GPIO 31 to know disassociation or network connection closed. In data mode, the Nagle Algorithm Wait Time can be used to buffer any characters to be sent, in order to avoid sending a large number of packets with small payloads onto the network. The wait time is specified in units of 10 milliseconds. This functionality is available for both UDP and TCP connections. (4) Response Codes The possible responses sent by the Adapter to the serial host are described below. The Response Codes can be distinguished into codes resulting from the AT Command or not. There are Carriage Return(\r, 0x0d) and Line Feed(\n, 0x0a) above and below ASCII STRING. If you send “at” string and Line Feed to the WizFi220, at + Line Feed (0x61 0x74 0x0d) You can see the following data. at + Line Feed (0x61 0x74 0x0d) + \r\n[OK]\r\n (0x0d 0x0a 0x5b 0x4f 0x4b 0x5d 0x0d 0x0a) No ASCII CHAR Response ASCII STRING Meaning 1 0 S2W_SUCCESS [OK] Command Request Success. 2 1 S2W_FAILURE [ERROR] Command Request Failed. 3 2 S2W_EINVAL [ERROR: INVALID INPUT] Invalid Command or Option or Parameter. 4 3 S2W_SOCK_FAIL [ERROR: SOCKET FAILURE] Socket Operation Failed. 5 4 S2W_ENOCID [ERROR: NO CID] All allowed CID’s in use, so there was no CID to assign to the new
WizFi 210 User Manual (WIZnet Co., Ltd.) 18connection. 6 5 S2W_EBADCID [ERROR: INVALID CID] Invalid Connection Identifier. 7 6 S2W_ENOTSUP [ERROR: NOT SUPPORTED] Operation or Feature not supported. 8 7 S2W_CON_SUCCESS [CONNECT <CID> <info>]TCP/IP connection successful. <CID> = the new CID in hexadecimal format. 9 8 S2W_ECIDCLOSE [DISCONNECT <CID>] TCP/IP connection with the given CID is closed. This response is sent to the host when a connection is closed either by the remote device or by the serial host. 10 9 S2W_LINK_LOST [DISASSOCIATED] Not associated to a wireless network. 11 A S2W_DISASSO_EVT [Disassociation Event] Wireless network association lost. Table 12. Response Codes (5) Use of GPIO10 If you click the GPIO10 button twice consecutively, the WizFi220 is restored to factory default. And if you click the GPIO10 button three times consecutively, the WizFi220 is restored to factory default and will change to ad hoc mode to configure the WizFi220 via WiFi. (IP:192.168.1.254/Subnet:255.255.255.0/Gateway:192.168.1.1) Figure 5. Factory Default and ad hoc mode As previously described, GPIO10 is used for data/command mode transition by applying “AT+XEHT=1” command. But there should be no UART input in 300mS before and after sending signal to GPIO10 for mode transition time and buffer processing time.
WizFi 210 User Manual (WIZnet Co., Ltd.) 19(6) AT Command example AT Command examples are described below. In this sample application, the WizFi220 associate to the AP and open the serial-to-wifi channel automatically after reboot. Description of each command is in the next chapter. No MCU → WizFi220 (AT Command) WizFi220 → MCU (Echo and Result String) Description 1 AT+WD AT+WD [OK] Disassociate 2 AT+WWPA=12345678 AT+WWPA=12345678 [OK] Set WPA passphrase 3 AT+NDHCP=1 AT+NDHCP=1 [OK] Enable DHCP 4 AT+WAUTO=0,WizFiAP,,0 AT+WAUTO=0,WizFiAP,,0 [OK] Set WiFi Configuration 5 AT+NAUTO=1,1,,4000 AT+NAUTO=1,1,,4000 [OK] TCP Server Mode(4000) 6 ATC1 ATC1 [OK] Auto Connect on next reboot 7 AT+XEHT=0 AT+XEHT=0 [OK] Disable Hardware Trigger 8 AT+XDUM=1 AT+XDUM=1 [OK] Disable UART Message 9 AT&Y0 AT&Y0 [OK] Set Default Profile 10 AT&W0 AT&W0 [OK] Save Profile Table 13. AT Command Example
WizFi 210 User Manual (WIZnet Co., Ltd.) 203. AT Commands This section provides a list of Serial2WiFi commands and their effects. Parameters are generally ASCII characters, e.g. ATEn with n=1 is the series of ASCII characters ‘A’, ‘T’, ‘E’, and ‘1’. Where some parameters are optional, mandatory parameters are denoted by < > and optional parameters by [ ]. If a parameter is mandatory, any associated sub-parameters are also mandatory; sub-parameters of an optional parameter are optional. Parameters must always be provided in the order given in the command description. When an optional parameter is not supplied, the comma delimiters must still be included in the command. Every command starts with the characters “AT”; any other initial characters will cause an error to be returned. Command Response: In most cases, valid commands return the characters OK. Invalid inputs return ERROR: INVALID INPUT. Some commands may be not supported depending on the version (1) Command interface Command Parameters Responses / Effects AT “OK” ATE n=0 (disable) =1 (enable) IF 1, echo all input. Ex) ATE0, ATE1 ATV n=0 (disable) =1 (enable) IF 1 responses are ASCII, else numerical codes. Ex) ATV0, ATV1 Table 14. Command interface (2) UART / adapter interface configuration Command Parameters Responses / Effects ATB <baudrate>[[,<bitsperchar>] [,<parity>][,<stopbits>]] UART parameters are immediately reset to values provided.(9600, 19200, 38400, 57600, 115200, 230400) Parity is n for no parity, e for even parity and o for odd parity. Allowed values are 5, 6, 7 or 8 bits/character, with 1 or 2 stop bits (1.5 in the case of a 5-bit character). Ex) ATB=9600,8,n,1
WizFi 210 User Manual (WIZnet Co., Ltd.) 21AT&K n=0 (disable) =1 (enable) IF 1, software flow control is enabled. Ex) AT&K0, AT&K1 AT&R n=0 (disable) =1 (enable) IF 1, hardware flow control is enabled. Ex) AT&R0, AT&R1 ATS n=0 to 5; p=(parameter value) Sets various timeout values; 0 (Network Connection Timeout, 10 milliseconds, 1~65535, default 1000) 1 (Auto Associate Timeout 10 milliseconds, 0~65535, default 500) 2 (TCP Connection Timeout 10 milliseconds, 0~65535, default 500) 3 (Association Retry Count Not currently supported) 4 (Nagle Algorithm Wait Time 10 milliseconds, 0~65535, default 10) 5 (Scan Time 1 milliseconds, 0~65535, default 20) Ex) ATS0=1000, ATS1=500 ATI n=0 to 2; Various Adapter ID information; 0 (OEM identification) 1 (Hardware version) 2 (Software version) Ex) ATI0, ATI2 Table 15. Uart / adapter interface configuration (3) Profile management Command Parameters Responses / Effects AT&W n=0 (profile 0) =1 (profile 1) Save profile specified by n. Ex) AT&W0 ATZ n=0 (profile 0) =1 (profile 1) Load profile specified by n. Ex) ATZ0 AT&Y n=0 (profile 0) =1 (profile 1) Set default profile to the value n. AT&Y0 AT&F Restore profile to factory default values. AT&V Current and saved profile parameter values as ASCII. Table 16. Profile management
WizFi 210 User Manual (WIZnet Co., Ltd.) 22(4) Wi-Fi interface Command Parameters Responses / Effects AT+NMAC=? Returns the current adapter MAC address. AT+NMAC2=? Returns the current adapter MAC address. AT+WREGDOMAIN= <Regulatory Domain> 0: FCC : supported Channel range is 1 to 11. 1: ETSI : supported Channel range is 1 to 13. 2: TELEC : supported Channel range is 1 to 14.Ex) AT+WREGDOMAIN=? AT+WREGDOMAIN=2 AT+WS= [<SSID>[,<BSSID>][,<Channel>][,<Scan Time>]] Network scan, returns list of found networks in the format: <SSID>,<BSSID>,<Channel>,<RSSI>,<Mode>,<Security> Ex) AT+WS AT+WS=,,6 AT+WM= n=0 (infrastructure) =1 (ad hoc) Set 802.11 Station operating mode. Ex) AT+WM=0 AT+WA= <SSID>[,[<BSSID>][,<Ch>]] Associate to specified SSID, BSSID, and channel. Ex)AT+WA=WizFiDemoAP AT+WD Disassociate from the current network. ATH Disassociate from the current network. AT+WWPS= <METHOD>[,PIN] Associate to an AP using WPS METHOD is push button (1) or pin (2). PIN is the pin for PIN method. AT+WWPS=2,12345670 AT+NSTAT=? Current wireless and network configuration. AT+WSTATUS Adapter reports the current network configuration to the serial host AT+WRSSI=? Current RSSI as ASCII. AT+WRATE=? Current transmit rate as ASCII. AT+WRETRY= <retrycount> Value of 802.11 TX retry is reset. Ex) AT+WRETRY=5 Table 17. Wi-Fi interface (5) Wi-Fi security Command Parameters Responses / Effects
WizFi 210 User Manual (WIZnet Co., Ltd.) 23AT+WAUTH= n=0 to 2 Authentication mode setting; 0 : None 1 : Open 2 : Shared with WEP Ex) AT+WAUTH=0 AT+WWEPn= n=1 to 4, <key> WEP key n is set to the value in <key>. Ex) AT+WWEP1=123456abdc AT+WWEP3=abcdef12345678901234567890AT+WWPA= <passphrase> WPA passphrase set to the value in <passphrase>. Ex) AT+WWPA=12345678 AT+WPAPSK= <SSID>,<passphrase> Computes and stores the WPA2 PSK value. Ex) AT+WPAPSK=WizFiDemoAP,12345678 AT+WPSK= <PSK> Sets the WPA2 pre-shared key to the <PSK>. Ex)AT+WPSK=00010203040506070809000102 03040506070809000102030405060708090001 AT+ WEAPCONF= <Outer Authentication>,<Inner Authentication>,<user name>, <password> Set the Outer authentication, Inner authentication, user name and password for EAP Security. This command returns the normal response codes. The valid outer authentication values are: Eap-FAST: 43 Eap-TLS: 13 Eap-TTLS: 21 Eap-PEAP: 25 The valid Inner Authentication values are: Eap-MSCHAP: 26 Eap-GTC: 6 Ex) AT+WEAPCONF=43,26,guest,1234 AT+WEAP= <Type>,<Format>,<Size>,<Location> <ESC>W <data of size above> Configure certificate for EAP-TLS Type: CA certificate(0)/ Client certificate(1)/ Private Key(2) Format: Binary(0)/Hex(1) Size: size of the file to be transferred. Location: Flash(0)/Ram(1) Ex) AT+WEAP=2,0,100,0 (cont.) <Esc>W<..data..> Table 18. Wi-Fi security
WizFi 210 User Manual (WIZnet Co., Ltd.) 24(6) Wireless configuration Command Parameters Responses / Effects AT+WRXACTIVE= n=0 (disable) =1 (enable) If 1, 802.11 radio is enabled. Ex) AT+WRXACTIVE=1 AT+WRXPS= n=0 (disable) =1 (enable) If 1, Power Save mode is enabled. Ex) AT+WRXPS=1 AT+MCSTSET= n=0 (disable) =1 (enable) If 1, multicast reception is enabled. AT+WP= <power> 8(Max) to 15(Min) Transmit power set to <power>. Ex) AT+WP=0 AT+WSYNCINTRL= <n> 1 to 65535. Configure the sync loss interval Ex) AT+WSYNCINTRL=30 AT+EXTPA= n=0 (disable) =1 (enable) Enable/disable the external PA Ex) AT+EXTPA=0 AT+PSPOLLINTRL= <n> 1 to 65535. Configure the keep-alive timer interval Ex) AT+PSPOLLINTRL=45 Table 19. Wireless configuration (7) Network interface Command Parameters Responses / Effects AT+NDHCP= n=0 (disable) =1 (enable) If 1, DHCP is enabled. AT+NSET= <Src Address>,<Net-mask>, <Gateway> Static network parameters; overrides previous values. Ex) AT+NSET=192.168.3.100,255.255.255.0,192.168.3.1 AT+DNSLOOKUP= <URL>,[<retry>,[<timeout=S>] Query DNS server for address of hostname URL. Ex) AT+DNSLOOKUP=google.com AT+DNSSET= <DNS1 IP>,[<DNS2 IP>] Set the DNS server addresses to be used. Ex) AT+DNSSET=192.168.3.1 AT+STORENWCONN Store network connection parameters prior to transition to Standby. AT+RESTORENWCONN Restore network connection parameters after wake from Standby. Table 20. Network interface
WizFi 210 User Manual (WIZnet Co., Ltd.) 25(8) Connection management Command Parameters Responses / Effects AT+NCTCP= <Dest-Address>,<Port> Attempt TCP client connection to Destination; CONNECT <CID> if successful. Ex) AT+NCTCP=192.168.3.200,5000 AT+NCUDP= <Dest-Address>,<Port> [<,Src.Port>] Open UDP client socket to Destination; CONNECT <CID> if successful. Ex) AT+NCUDP=192.168.3.200,5000 AT+NSTCP= <Port> Start a TCP server on Port; CONNECT <CID> if successful. Ex) AT+NSTCP=5000 AT+NSUDP= <Port> UDP server on Port; CONNECT <CID> if successful. Ex) AT+NSUDP=5000 AT+CID=? Returns the current CID configuration. AT+NCLOSE= <CID> Close connection identified by CID. Ex) AT+NCLOSE=1 AT+NCLOSEALL Close all open connections. AT+SETSOCKOPT= <Cid>,<Type>,<Parameter>,<Value>,<Length> Configure a socket which is identified by a CidAT+SSLOPEN= <cid>,<certificate name> Open an SSL connection AT+SSLCLOSE= <cid> Close an SSL connection AT+HTTPCCONF= <Param>,<Value> Configure an HTTP client AT+HTTPCOPEN= <host>,<Port Number>, [<SSL Flag>,<certificate name>] Open an HTTP client connection. This command opens an HTTP client on the adaptor and connects to the server specified by the host name or IP address AT+HTTPCSEND= <cid>,<Type>,<Timeout>, <Page>,[Size of content] GET/POST HTTP data on the HTTP client connection AT+HTTPCCLOSE= <cid> Close the HTTP client connection AT+NRAW= <0|1|2> Enable / Disable Raw Ethernet support. AT+UNSOLICITEDTX= <Frame Control>,<Sequence Cntrl>,<Channel>,<Rate>,<WmmInfo>, <Receiver Mac>,<Bssid of Unsolicited data transmission
WizFi 210 User Manual (WIZnet Co., Ltd.) 26AP>,<Frame Length> Table 21. Connection management (9) Battery check Command Parameters Responses / Effects AT+BCHKSTRT= <Batt.chk.freq> Start checking battery each 0 < Batt.chk.freq≤ 100 packets transmitted. AT+ BATTLVLSET= <Warning Level>,<Warning Freq>,<Standby Level> Set the battery warning/standby level to enable the adaptor’s internal battery measuring logic AT+BCHK= <Batt.chk.freq> Reset value of battery check frequency. AT+BCHKSTOP Stop checking battery. AT+BATTVALGET Retrieve the most recent battery check value. Table 22. Battery check (10) Power state management Command Parameters Responses / Effects AT+PSDPSLEEP Enable SOC Deep Sleep power saving mode. AT+PSSTBY= <x>[,<DelayTime>,<Alarm1 pol.>,<Alarm2 pol.>] Request transition to Standby for x milliseconds. Ex) AT+PSSTBY=60000,1000,1,1 AT+PSSTBY=5000 Table 23. Power state management (11) Auto connection Command Parameters Responses / Effects AT+WAUTO= <mode>,<SSID>,<BSSID>,[channel] Sets WiFi parameters to be used for Auto Connect. Mode is 0 for Infrastructure and 1 for Ad-hoc mode Ex) AT+WAUTO=0,WizFiDemoAP AT+NAUTO= <Type>,<Protocol>,<Destination IP>,<Destination Port> Sets network parameters to be used for Auto Connect. Type is 0 for Client and 1 for Server; Protocol is 0 for UDP and 1 for TCP;
WizFi 210 User Manual (WIZnet Co., Ltd.) 27Ex) AT+NAUTO=0,1,192.168.3.101,5000 (TCP/Client) AT+NAUTO=1,1, ,5001 (TCP/Server) AT+NAUTO=0,0,192.168.3.101,5002 (UDP, Local/Remote Port is 5002) ATC n=0 (disable) =1 (enable) IF 1, Auto Connect is enabled on next reboot or AT. ATA Start Auto Connect, including association. ATA2 Start Auto Connect using existing association. ATO Return to a previous Auto Connect session; returns an error if no such session exists. Table 24. Auto connection (12) Provisioning Command Parameters Responses / Effects AT+WEBPROV= <user name>,<passwd> Provisioning through web pages AT+WEBLOGOADD= <size> maximum size is 1788 bytes Adding the Logo that will appear on the web pages used for provisioning. Table 25. Provisioning (13) Miscellaneous Command Parameters Responses / Effects AT+FWUP= <SrvIp>,<SrvPort>,<SrcPort>,[<retry>] Get a firmware upgrade from the server address/port to the adapter port SrcPort. Ex) AT+FWUP=192.168.3.200,667,667 AT+SETTIME= <dd/mm/yyyy>,<HH:MM:SS> Set the adaptor system time AT+ GETTIME=? Upon reception of this command the adaptor sends the current system time in milliseconds since epoch(1970) to the serial interface. The time format comes on the serial interface as follows: “Current Time in msec since epoch=xxxxxxx” AT+DGPIO= <GPIO-NO>,<SET/RESET(0/1)> Set or reset (high/low) a GPIO pin Ex) AT+DGPIO=31,0 AT+VER=? Return the current adapter firmware versions. AT+PING= <IP>,[[Trails],[<Interval>],[<Len>],[ PING the IP address provided. Trails = 0 will
WizFi 210 User Manual (WIZnet Co., Ltd.) 28<TOS>],[<TTL>],[<PAYLOAD>]] ping until <Esc> C is issued. Ex) AT+PING=192.168.3.1,5 AT+TRACEROUTE= <IP>,[[Interval],[<MaxHops>],[<MinHops>],[<TOS>]] Trace the route to the IP address provided. Ex) AT+TRACEROUTE=74.125.155.103 AT+XDUM= n=1 (disable) =0 (enable) If 1, UART Message is Disabled.(When Auto Connection Mode) AT+XEHT= n=0 (disable) =1 (enable) If 1, Hardware Trigger is Enabled. Table 26. Miscellaneous
WizFi 210 User Manual (WIZnet Co., Ltd.) 294. Hardware Installation Please follow the instruction to install your WizFi220 Wi-Fi module on your system: Your PCB comes with a SMD PADs, which allows the system to SMT WizFi220 Wi-Fi module for using Wireless LAN (IEEE802.11b). Step 1: Mount the Wi-Fi module on your PCB Step 2: Connect the antenna. You have just completed the Wireless LAN hardware installation. When you boot up the system , you should expect to see the wireless LAN connection capacity. This device is intended only for OEM integrators under the following conditions: 1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and 2) The transmitter module may not be co-located with any other transmitter or antenna, 3) For all products market in US, OEM has to limit the operation channels in CH1 to CH11 for 2.4G band by supplied firmware programming tool. OEM shall not supply any tool or info to the end-user regarding to Regulatory Domain change. As long as 3 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed. NOTE: In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization.
WizFi 210 User Manual (WIZnet Co., Ltd.) 30 End Product Labeling This transmitter module is authorized only for use in device where the antenna may be installed such that 20 cm may be maintained between the antenna and users. The final end product must be labeled in a visible area with the following: “Contains FCC ID: XR2WIZFI220.” To comply with FCC RF exposure compliance requirements, the antenna used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.
WizFi 210 User Manual (WIZnet Co., Ltd.) 315. Warranty WIZnet Co., Ltd offers the following limited warranties applicable only to the original purchaser. This offer is non-transferable. WIZnet warrants our products and its parts against defects in materials and workmanship under normal use for period of standard ONE(1) YEAR for the WizFi220 board and labor warranty after the date of original retail purchase. During this period, WIZnet will repair or replace a defective products or part free of charge. Warranty Conditions: 1. The warranty applies only to products distributed by WIZnet or our official distributors. 2. The warranty applies only to defects in material or workmanship as mentioned above in 3.Warranty. The warranty applies only to defects which occur during normal use and does not extend to damage to products or parts which results from alternation, repair, modification, faulty installation or service by anyone other than someone authorized by WIZnet Co., Ltd. ; damage to products or parts caused by accident, abuse, or misuse, poor maintenance, mishandling, misapplication, or used in violation of instructions furnished by us ; damage occurring in shipment or any damage caused by an act of God, such as lightening or line surge. Procedure for Obtaining Warranty Service 1. Contact an authorized distributors or dealer of WIZnet Co., Ltd. for obtaining an RMA (Return Merchandise Authorization) request form within the applicable warranty period. 2. Send the products to the distributors or dealers together with the completed RMA request form. All products returned for warranty must be carefully repackaged in the original packing materials. 3. Any service issue, please contact to sales@wiznet.co.kr

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