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DTU说明(RM0001E_mxchipWNet_DTU_V4_1).pdf
1 Introduction
1.1 LED Functions Controlled by Firmware
1.2 Pin Definition Under mxchipWNetTM-DTU
1.2.1 EMW3280, EMW3160 and EMW3162
1.2.2 EMW3161
1.3 Function Description of Each Pin
1.4 Typical hardware connections
2 Firmware Working Modes and Switching
2.1 Working Flowchart
2.2 Working Modes
2.3 Working Mode after Power On
2.4 Switching between Working Modes
2.5 Default Settings
3 Direct Transmission Mode
3.1 QUICK START
3.1.1 Hardware Connection
3.1.2 Connect to module using Wi-Fi
3.1.3 Data transmission between serial port and Wi-Fi
3.2 Internal mechanism of Direct Transmission Mode
3.2.1 Serial Port=>Wireless Network
3.2.2 Wireless Network => Serial Port
3.3 Half Duplex Mode (HDC mode)
4 EMSP Command Mode
4.1 QUICK START
4.1.1 Hardware Connection
4.1.2 Send EMSP command using EMW Tool Box
4.2 EMSP Command Specification
4.3 Command Description
4.3.1 Static Configuration Commands
EMSP_CMD_GET_CONFIG (COMMAND ID 0002)
EMSP_CMD_SET_CONFIG (COMMAND ID 0003)
EMSP_CMD_SET_DNS (COMMAND ID 0052)
EMSP_CMD_GET_DNS (COMMAND ID 0053)
EMSP_CMD_SET_EXTRA_SSID (COMMAND ID 0064)
EMSP_CMD_GET_EXTRA_SSID (COMMAND ID 0065)
EMSP_CMD_SET_EXTRA_SOCKET (COMMAND ID 0069)
EMSP_CMD_GET_EXTRA_SSID (COMMAND ID 006A)
EMSP_CMD_SET_KEEPALIVE (COMMAND ID 006B)
EMSP_CMD_GET_KEEPALIVE (COMMAND ID 006C)
EMSP_CMD_SET_PS_MODE (COMMAND ID 0063)
EMSP_CMD_GET_PS_MODE (COMMAND ID 0066)
EMSP_CMD_SET_DUAL_UAP (COMMAND ID 0067)
EMSP_CMD_GET_DUAL_UAP (COMMAND ID 0068)
EMSP_CMD_GET_UART_MODE (COMMAND ID 0062)
EMSP_CMD_SET_UART_MODE (COMMAND ID 0061)
EMSP_CMD_GET_NAME (COMMAND ID 0046)
EMSP_CMD_SET_NAME (COMMAND ID 0047)
EMSP_CMD_GET_VER (COMMAND ID 006F)
EMSP_CMD_GET_MAC_ADDR (COMMAND ID 000C)
4.3.2 Dynamic Control Commands
EMSP_CMD_RESET (COMMAND ID 0001)
EMSP_CMD_START (COMMAND ID 0005)
EMSP_CMD_GET_STATUS (COMMAND ID 0008)
EMSP_CMD_GET_IP (COMMAND ID 0040)
EMSP_CMD_OPEN_SOCKET (COMMAND ID 0045)
EMSP_CMD_CLOSE_SOCKET (COMMAND ID 0044)
EMSP_CMD_WIFI_STOP (COMMAND ID 004A)
EMSP_CMD_WIFI_CONNECT (COMMAND ID 004B)
EMSP_CMD_SCAN_AP (COMMAND ID 0004)
EMSP_CMD_SEND_DATA (COMMAND ID 0006)
EMSP_CMD_RECV_DATA (COMMAND ID 0007)
5 Methods of Configuration
5.1 Build-in Web Pages Method
5.2 EMSP Commands Method
5.3 Near-Field-Communication Method
5.4 Wi-Fi Protected Setup (WPS)
5.5 Easy Link Method
6 Low power modes
7 Network Services
7.1 Use mDNS (Bonjour) Service to find module in local network
7.1.1 Bonjour definition:
7.1.2 Demonstration:
7.2 Use UDP broadcast to find modules in local network
7.3 DHCP Server
8 Sales Information
9 Technical Support
Reference
Manual
mxchipWNetTM-DTU firmware
mxchipWNet-DTU
4.1
Date：2014-03-12
Reference manual
UART <> Wi-Fi Firmware
Overview
mxchipWNetTM firmware is a software system
running run on EMW Wi-Fi modules developed
by MXCHIP. These firmware embedded with
multiple M2M applications, TCP/IP stack and Wi-
Fi driver can greatly reduce your development
time and improve competitiveness on your M2M
products.
Firmware: mxchipWNetTM-DTU is used to
implement the Wi-Fi data transmission on serial
devices. Two primary functions are provided:
EMSP command and direct data transmission
between UART and Wi-Fi. It is widely used in
establishing wireless communication on serial
devices.
Main functions:
Two working modes: EMSP command
TCP/IP features:
mode and direct data transmission mode
Multiple configuration interface
Build-in web site
Firmware updating using serial and web
Wi-Fi driver features:
DHCP client and server
DNS, mDNS (bonjour)
Two sockets working at the same time
TCP client/server with keep-alive
detection and auto reconnection
WLAN standard: IEEE 802.11 b/g/n
UDP unicast/broadcast
RF frequency: channel 1-13 on 2.4GHz
Support 8 clients in TCP server mode
Greatly reduce power consumption
HTTP, FTP and SMTP client
Roaming between multiple access points
Sock4/5 proxy
Support station mode,, soft AP mode
UART features:
and Wi-Fi direct
Security: WEP and WPA/WPA2 PSK
enterprise
Auto detect security mode
Baud rate: 2400-3686400
CTS/RTS hardware flow control
Multiple UART data package mode
High-speed data transfer by DMA
Contents
INTRODUCTION .................................................................................................. 5
LED Functions Controlled by Firmware ...................................................................................... 5
Pin Definition Under mxchipWNetTM-DTU ................................................................................ 6
EMW3280, EMW3160 and EMW3162 ...................................................................................................... 6
EMW3161 ........................................................................................................................................................... 6
Function Description of Each Pin ................................................................................................ 7
Typical hardware connections ..................................................................................................... 9
FIRMWARE WORKING MODES AND SWITCHING ........................................ 11
Working Flowchart ...................................................................................................................... 11
Working Modes ........................................................................................................................... 12
Working Mode after Power On ................................................................................................. 12
Switching between Working Modes ......................................................................................... 13
Default Settings ........................................................................................................................... 14
FUNCTION DESCRIPTION: DIRECT TRANSMISSION MODE ........................ 15
QUICK START ............................................................................................................................... 15
Hardware Connection .................................................................................................................................. 15
Connect to module using Wi-Fi ............................................................................................................... 17
Data transmission between serial port and Wi-Fi ............................................................................. 18
Internal mechanism of Direct Transmission Mode ................................................................. 20
Serial Port=>Wireless Network................................................................................................................ 20
2
Wireless Network => Serial Port ............................................................................................................. 23
Half Duplex Mode (HDC mode) ................................................................................................ 24
FUNCTION DESCRIPTION: EMSP COMMAND MODE ................................... 26
QUICK START ............................................................................................................................... 27
Hardware Connection .................................................................................................................................. 27
Send EMSP command using EMW Tool Box ....................................................................................... 27
EMSP Command Specification .................................................................................................. 28
Command Description ................................................................................................................ 29
Static Configuration Commands ............................................................................................................. 30
Dynamic Control Commands .................................................................................................................... 38
METHODS OF CONFIGURATION ..................................................................... 42
Build-in Web Pages Method ...................................................................................................... 42
EMSP Commands Method ......................................................................................................... 43
Near-Field-Communication Method ......................................................................................... 43
Wi-Fi Protected Setup (WPS) ..................................................................................................... 43
Easy Link Method ........................................................................................................................ 44
NETWORK SERVICES ........................................................................................ 47
Use mDNS (Bonjour) Service to find module in local network ............................................. 49
MAC/iOS Example: ........................................................................................................................................ 49
Windows Example: .......................................................................................................... 错误!未定义书签。
Android example: ............................................................................................................ 错误!未定义书签。
3
Use UDP broadcast to find module in local network ............................................................. 51
DHCP Server ................................................................................................................................ 52
SALES INFORMATION ...................................................................................... 53
TECHNICAL SUPPORT ...................................................................................... 54
4
Introduction
mxchipWNetTM firmware is a software system running run on EMW Wi-Fi modules
developed by MXCHIP. These firmware embedded with multiple M2M applications,
TCP/IP stack and Wi-Fi driver can greatly reduce your development time and improve
competitiveness on your M2M products.
One of the firmware: mxchipWNetTM-DTU is used to implement the Wi-Fi data
transmission on serial devices. Two primary functions: EMSP command and direct data
transmission between UART and Wi-Fi are provided. It is widely used in establishing
wireless communication on serial devices.
mxchipWNetTM-DTU can run on: EMW3280, EMW3161, and EMW3162. LEDs and pins
on these module are defined to a specified function which is described in 1.1 and 1.2:
LED Functions Controlled by Firmware
D1
D2
D1
EMW3280 EMW3161
D2
D1
D2
D1
EMW3162 EMW3160
Name
Function description
LED function list
D1
D2*
On
Off
Flash
On
Off
Firmware initialize successful
Firmware uninitialized, or deep sleep mode
Firmware update mode
Wi-Fi connected, DHCP negotiate success
Wi-Fi disconnected
Keep
Data transmission/WPS negotiating/EasyLink
Flashing
mode
* D2 led is available on EMW3280, EMW3162 and EMW3160, and you can also
connect an external led from pin 16. D2 is not existed on EMW3161 module, so you
should connect an external LED from pin 36 on EMW3161.
5
Pin Definition Under mxchipWNetTM-DTU
EMW3280, EMW3160 and EMW3162
EMW3280, EMW3160 and EMW3162 Pinouts
Pins
Pin Name
Pins
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NFC_SCL
NFC_SDA
NC
NC
WPS/Default (IN)
NC
NC
NC
NC
NC
EasyLink/Default (IN)
NC
NFC_INT
LoPow(IN) *
GND
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Pin Name
LED (OUT)
BOOT(IN)
nRESET(IN)
IO1
NC
nUART_RTS(OUT)
nUART_CTS(IN)
UART_TXD(OUT)
UART_RXD(IN)
VDD
GND
NC
NC
NC
nWAKE_UP(IN）
STATUS(IN)
* LoPow function is only available on EMW316x modules.
6
EMW3161
EMW3161 Pinouts
Pins
Pin Name
Pins
Pin Name
6
11
12
21
24
28
29
36
38
NFC_INT
WPS/Default (IN)
EasyLink/Default (IN)
IO1
LoPow(IN) *
NFC_SCL
NFC_SDA
LED (OUT)
BOOT(IN)
39
40
46
45
47
48
41,44,49
42,43
nWAKE_UP(IN)
Other
STATUS(IN)
nRESET(IN)
nUART_RTS(OUT)
nUART_CTS(IN)
UART_TXD(OUT)
UART_RXD(IN)
GND
VDD
NC
Function Description of Each Pin
Pin
Type
VDD
GND
Function description
Function
3.3V DC power input.
Grounding.
NFC_SCL
O
IIC clock (connect to NFC tag EMF2104)
NFC_SDA
I/O
IIC data (connect to NFC tag EMF2104)
NFC_INT
WPS/Defaul
t
EasyLink/
Default
I
I
I
Interrupt input (connect to NFC tag EMF2104)
Pull down and up: enter Wi-Fi protected setup(WPS)
Double click: enter one step configuration method: EasyLink
Pull down and keep for 5 seconds: restore all settings to default.
This pin is only available on EMW316x modules
Pull down and up: enter one step configuration method: EasyLink
Pull down and keep for 5 seconds: restore all settings to default.
7
Pin
Type
Function
UART_RXD
UART_TXD
nUART_CTS5
nUART_RTS5
I
O
I
O
UART Data input.
UART Data output.
UART clear to send, active low.
UART is ready to receive, active low.
LoPow
I
Pull up: Exit sleep mode
Control the module’s MCU low power mode:
Pull down: Enter sleep mode
Set the operation mode:
STATUS
I, PU1
Pull up: enter the direct data transmission mode
Pull down: enter the EMSP command mode
Refer chapter 2 for details.
Module enter deep sleep mode if the WAKE_UP pin is pulled low,
WAKE_UP
I, PU
and wake up while the WAKE_UP pin is pulled high.
Reset is needed to wake up EMW3161 from deep sleep mode.
nRESET6
I, PU
Pull down this pin for 1μs to reboot the module.
BOOT signal is detected to enter the different working mode when
LED/
BOOT
module is powered on, Refer chapter 2 for details.
I, PU
Pull up: Boot to normal working mode.
Pull down: Boot to special working modes (firmware update
mode or test mode).
O
LED pin has the same function as led D2, This signal is active low.
NC7
No function. (IO1 function is configured by firmware)
FC mode: Used as a serial data frame controller in direct data
I7
IO1
transmission mode.
Pull down: Module stores the received serial data in RAM
Pull up: Build up TCP/UDP package with the serial data in RAM
HDC mode: Used as a Half-duplex Controller.
Output a high level signal while sending a serial data, otherwise,
O7
output a low level
This function can also be used to wake up host before send any
UART data.
NC
Undefined IOs. Leave them floating or grounding.
1. PU: The pin is at high level if no external signal is asserted.
2. PD: The pin is at low level if no external signal is asserted.
3. UART signals includes UART_TXD，UART_RXD，UART_RTS and UART_CTS。
4. Only VDD, GND UART_TXD and UART_RXD are needed in a simplest connection.
8
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