Usr iot Usr-c321 User manual

USR-C321 Low Power M inisize WiFi Module User Manual www.usr.so

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USR-C32

USR-C32 1

1

-

-Low

Low

Low Power

Power

Power Minisize

Minisize

Minisize WiFi

WiFi

WiFi Module

Module

Module User

User

User Manual

Manual

V1.

V1. 1

1

Support [email protected] GHz 802.11 b/g/n wireless standards



Support WEP

、

WPA/WPA2 security mode

Support AP/STA working mode

Based on ARM Cortex-M4 kernel running frequency of 80 MHZ

Fully integrated serial port turn wireless TCP/UDP transmission function,the rate of serial

port up to 3M bps

Support 485 Control

Search in local area network (LAN) and wireless parameter s setting function

Support TCP/UDP Client registered packet mechanism

Support Simplelink/usrlink Networking configuration

Support c ustom web function

Support similar RFC2217 automatic baud rate adaptation function

Support AT+ simple instruction set configuration

Single 3.3 V power supply

Ultra low power mode, support deep dormancy

Support Internal/External(I-PEX) Antenna Option

Minisize:18.22mm*26.65mm*2.8mm SMT



FCC/CE Certificated

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Catalogue

1

、

Module

Module Overview

Overview

Overview ..............................................................................................................................

..............................................................................................................................

.............................................................................................................................. 3

3

1.1

1.1 Module

Module

Module Overview

Overview

.......................................................................................................................

3

1.2

1.2 Characteristics

Characteristics

Characteristics of

of

of Module

Module

.......................................................................................................

3

1.3

1.3 Product

Product

Product Feature

Feature

.........................................................................................................................

4

1.4

1.4 Application

Application

Application Area

Area

........................................................................................................................

5

2

、

Hardware

Hardware Description

Description

Description ......................................................................................................................

......................................................................................................................

...................................................................................................................... 6

6

2.1

2.1 Pin

Pin Definitions

Definitions

............................................................................................................................

6

2.2

2.2 Antenna

Antenna

Antenna Shows

Shows

..........................................................................................................................

7

2.3

2.3 Size

Size

Size and

and

and Layout

Layout

Layout Recommendations

Recommendations

....................................................................................

8

2.4

2.4 The

The

The Hardware

Hardware

Hardware Circuit

Circuit

Circuit Design

Design

Design Reference

Reference

............................................................................

9

3

、

Product

Product Function

Function

Function ............................................................................................................................

............................................................................................................................

............................................................................................................................ 11

11

3.1

3.1 Work

Work

Work Mode

Mode

................................................................................................................................

11

3.2

3.2 Wireless

Wireless

Wireless Network

Network

Network Mode

Mode

.........................................................................................................

12

3.3

3.3 Socket

Socket

Socket Communication

Communication

.........................................................................................................

13

3.4

3.4 Custom

Custom

Custom web

web

web function

function

.............................................................................................................

14

3.5

3.5 Search

Search

Search in

in

in local

local

local area

area

area network

network

...............................................................................................

14

3.6

3.6 TCP/UDP

TCP/UDP

TCP/UDP Client

Client

Client Registration

Registration

Registration Packet

Packet

Packet Mechanism

Mechanism

..........................................................

15

3.7

3.7 Fast

Fast

Fast Access

Access

Access Wi-Fi(usrlink)

Wi-Fi(usrlink)

....................................................................................................

15

3.8

3.8 Simplelink

Simplelink

Simplelink Configuration

Configuration

......................................................................................................

18

3.9

3.9 RFC2217

RFC2217

RFC2217 Automatic

Automatic

Automatic Baud

Baud

Baud Rate

Rate

Rate Function

Function

.........................................................................

18

3.10

3.10 Sleep

Sleep

Sleep Mode

Mode

Mode Introduction

Introduction

....................................................................................................

19

4

、

Parameter

Parameter Setting

Setting

Setting ...........................................................................................................................

...........................................................................................................................

........................................................................................................................... 21

21

4.1

4.1 Web

Web

Web Page

Page

Page Configuration

Configuration

.......................................................................................................

21

4.2

4.2 AT+

AT+

AT+ Commands

Commands

Commands Configuration

Configuration

............................................................................................

28

5

、

service

service and

and

and support

support

support .......................................................................................................................

.......................................................................................................................

....................................................................................................................... 40

40

Appendix

Appendix A:

A:

A: Contact

Contact

Contact Information

Information

.....................................................................................................

41

Appendix

Appendix B:

B:

B: Disclaimer

Disclaimer

......................................................................................................................

41

Appendix

Appendix C:

C:

C: Update

Update

Update History

History

..............................................................................................................

41

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1

1、

、

、Module

Module

Module Overview

Overview

1.1

1.1 Module

Module

Module Overview

Overview

USR - C321 is a low-cost module of the series wifi module C32 x.The module is a low-power

802.11 b/g/n modules that design for achieving the application of the embedded system,

wireless network communication. Through the module, the customer can set a physical device

connected to a wifi network, so as to realize the control and management of the Internet of iot.

The hardware of module integrate MAC, baseband chip, rf transceiver unit, as well as the

power amplifier; Adopting CC3200 chip of TI company, the kernel of industrial-grade ARM

architecture (M4 kernel, running frequency of 80 MHZ. The internal ultra-low power operation

mechanism, can run effectively low-power module; Support WiFi protocol and TCP/IP protocol,

the user only needs simple configuration, can achieve the function of UART devices connected

to the Internet.

Small size, easy to welding in the customer product veneer of hardware circuit. And the

module can choose the application of the internal or external antenna, supplying customers

multiple choices.

Module size: 18.22 mm * 26.65 mm * 2.8 mm SMT assembly

The basic function of the module is described below:

Can work in AP mode for other WIFI devices access communication, can also work in

the STA mode, access to the wireless router to realize communication

With a Socket communication links, can be set to the TCP Server, TCP Client, and UDP

Server, UDP Client communication; The Socket in the TCP Server mode, can support

up to four TCP Client connection

Module supports UART translate, can use AT commands to arbitrary switching.

If you have problems when use the module,you can submit the question to

http://h.usriot.com

http://h.usriot.com .We will solve your question at the first time .

1.2

1.2 Characteristics

Characteristics

Characteristics of

of

of Module

Module

Support [email protected] GHz 802.11 b/g/n wireless standards



Support WEP-A

、

WPA/WPA2 security mode

Support AP/STA working mode

Based on ARM Cortex-M4 kernel running frequency of 80 MHZ

Fully integrated serial port turn wireless TCP/UDP transmission function,the rate of serial

port up to 3M bps

Support 485 control

Search in local area network (LAN) and wireless parameter s setting function

Support TCP/UDP Client registered packet mechanism

Support Simplelink/usrlink Networking configuration

Support similar RFC2217 automatic baud rate adaptation function

Support AT+ simple instruction set configuration

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Single 3.3 V power supply

Ultra low power mode, support deep dormancy

Support Internal/External(I-PEX) Antenna Option

Minisize:18.22mm*26.65mm*2.8mm SMT



FCC/CE Certificated

1.3

1.3 Product

Product

Product Feature

Feature

Module parameters

classify parameter value

Wireless P ara

meter

Certification FCC/CE

Wlan S tandard 802.11 b/g/n

T ransmit P ower

17.0 dBm @ 1 DSSS

17.25 dBm @ 11 CCK

13.5 dBm @ 54 OFDM

R eceive

S ensitivity

– 94.7 dBm @ 1 DSSS

– 87.0 dBm @ 11 DSSS

– 73.0 dBm @ 54 OFDM

A ntenna

External : I-PEX

Internal : On-board antenna

Hardware

D ata I nterface UART 300-3M bps

W orking V oltage 3.0V~3.6V

W orking C urrent

（voltage 3.3 V ）

Continue to send : ~75mA

normal mode : average: ~18mA ，top: 200mA

In the web : 3.5mA

Standby : lowest 25uA

W orking

T emperature

- 40 ℃- 85 ℃

S torage

T emperature

-45 ℃- 125 ℃

S ize 18.22mm*26.65mm*2.8mm

Footprint SMT

S oftware

Wireless

N etwork T ype

AP/STA

S ecurity R egime WEP/WPA-PSK/WPA2-PSK

Encryption Type TKIP , AES , TKIP/AES

N etworking

P rotocol

IPv4, TCP/UDP

User

Configuration

AT+ instruction set

Web

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1.4

1.4 Application

Application

Application Area

Area



Cloud C onnected



H ome A utomation



H ousehold A ppliances



A ccess C ontrol



S ecurity and P rotection S ystem



Smart Energy



I ndustrial C ontrol



I ntelligent E lectrical O utlet B ox/ I nstrument M easurement



IP N etwork S ensor N odes



W ireless P rinter

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2

2、

、

、Hardware

Hardware

Hardware Description

Description

2.1

2.1 Pin

Pin Definitions

Definitions

The module pin

P in Net Name F unctional D escription

1 GND GND

2 GPIO General GPIO

3 GPIO General GPIO

4 nReset Module reset pin, low level effectively

5 SOP2

Start the choice, see 2.4

2.4

2.4 The

The

The Hardware

Hardware

Hardware Circuit

Circuit

Circuit Design

Design

Reference

6 SOP1 default NC

7 SOP0 default NC

8 ANA DC-DC The RF power output pin, hung up

9 NC NC

10 NC NC

11 GND GND

12 GND GND

13 VBT_CC Power input pin, please connect + 3.3 V

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14 VDD_ANA2 RF Power input pin, please connect + 3.3 V

15 GPIO General GPIO

16 NC NC

17 GND GND

18 GPIO General GPIO

19 UART TX UART TX for

module

20 UART RX UART RX for module

21 nReload

Down 1-3 Seconds start simplelink setting.

Down more 3 seconds set the Module to factory default

setting

22 nReady

Work instructions pin of module, low effective, connect an

external LED

23 nLink

WiFi link pin of module, low effective, connect an external

LED

24 UART CTS A serial port flow control pin CTS

25 UART RTS A serial port flow control pin RTS

26 GPIO General GPIO

27 GPIO General GPIO

28 GND GND

29 GND GND

30 GPIO General GPIO

31 GPIO General GPIO

32 GPIO General GPIO

33 GPIO General GPIO

34 GPIO General GPIO

35 GPIO General GPIO

36 GPIO General GPIO

37 GPIO General GPIO

38 GPIO General GPIO

39 NC NC

40 NC NC

41 GPIO General GPIO

42 NC NC

43 NC NC

44 GND GND

2.2

2.2 Antenna

Antenna

Antenna Shows

Shows

Module has two antenna version, internal antenna and external IPEX interface respectively:

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Internal Antenna External:I-PEX

2.3

2.3 Size

Size

Size and

and

and Layout

Layout

Layout Recommendations

Recommendations

Advise PCB F ootprint :

Cloth plate specification:

1) Internal Antenna

Customers to use the internal antenna, the need to abide by the following

considerations and internal antenna module placed general rules:

On the user's PCB, and grey shaded area above the corresponding area cannot be

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placed components and GND.

Antennas away from the metal, at least distance with high components around

more than 10 mm;

Antenna part cannot be metal shell, plastic shell need at least more than 10 mm

away from the antenna;

It is suggested that module is placed in the following areas of the user's board as far

as possible, to reduce the influence of the antenna and wireless signal, and at the same

time, please consult someone technical support staff to assist the placement of

modules and related areas of the Layout design.

2) external antenna

Customers to use external antenna lead, according to the requirement of the

IEEE802.11 b/g/n standard, need to connect the 2.4 g external antenna. External antenna

using IPEX interface. The parameters of the external antenna requirements in the table

below details.

item paramter

frequency range 2.4~2.5GHz

impedance 50 Ohm

VSWR 2 (Max)

Return Loss -10dB (Max)

Connection Type IPEX

2.4

2.4 The

The

The Hardware

Hardware

Hardware Circuit

Circuit

Circuit Design

Design

Design Reference

Reference

The hardware design considerations:

Need to add more than 200uf capacitance module power supply pin.

SOP0 、SOP1 、no connect .

SOP2 reserved a port,used to upgrade firmware in uart0

Reset 、Reload n eed to pick up on the 4.7 K resistor.

nLink,nReady Effective for low level output.

Serial port RXD, TXD series a 0 Ωresistance

Serial port RXD, TXD need to pick up on the 10K resistor.

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3

3、

、

、Product

Product

Product Function

Function

3.1

3.1 Work

Work

Work Mode

Mode

Module consists of two work modes: translate mode and command mode



Translate

Translate Mode

Mode

In this mode, the module realizes the UART and transparent transmission between

network, realize common serial data transfer between devices and network equipment.



Command

Command Mode

Mode

In this mode, the user can through the AT command to UART module and query

and network parameters Settings. When using the AT + ENTM exit command mode,

the default back to translate mode.

3.1.1

3.1.1 Translate

Translate

Translate Mode

Mode

1.

1. Translate

Translate

Translate Mode

Mode

UART interface can transparent transmission mode has the advantage of UART

interface and network communication of the plug and play, which reduce the complexity of

the user to a great extent. Modules to work in a transparent transmission mode, the users

only need to configure the necessary parameters, UART interface and network

communication can be realized. After power on, module automatically connected to the

wireless network and server configured.

Transparent transmission mode is fully compatible with your own software platform,

reducing the workload of integration of wireless data transmission software development.

Users need to preset parameters usually include:

Wireless network parameters

SSID

security mode

secret key

TCP/UDP parameter

protel

connection type

destination port

destination address

UART parameter

Baud rate

data bits

stop bit

parity bit

Hardware flow control

2.

2. UART

UART

UART Frame

Frame

Frame Scheme

Scheme

Module in the receiving UART data, will continue to check the time interval of two

adjacent bytes. If the time interval is greater than the set packing time (default 5 ms, can be

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set up by the

AT

+ UARTTE), argues that the end of a frame, or has been receiving data, in

command mode is greater than 1 k bytes are discarded the received data, in translate mode

is greater than 1 k bytes are sent packing.

3.1.2

3.1.2 Command

Command

Command Mode

Mode

In command mode, the module will no longer work to translate, UART port

AT

this time

for receiving the

AT

command, the user can through UART port to send

AT

commands to

module, UART for querying and setting module, network and other related parameters.

3.2

3.2 Wireless

Wireless

Wireless Network

Network

Network Mode

Mode

There are two kinds of wireless module WIFI working mode: the

STA

and

AP,

can

provide users with flexible network mode and the network topology method.

< Nouns that >

AP:The wireless access point, is the center of a wireless network node. Commonly

used wireless router is an

AP,

other wireless terminal can be interconnected by AP

STA: wireless site, is a wireless network terminal. Such as notebook computer, PDA,

etc.

3.2.1

3.2.1 Module

Module

Module As

As

As a

a

a STA

STA

Module as the

STA

is one of the most commonly used network mode, and is composed

of a router AP and many STA, the following figure. Its characteristic is AP in a central

position, communication between the

STA

forward by

AP.

3.2.2

3.2.2 Module

Module

Module As

As

As a

a

a AP

AP

Modules as AP mode, can achieve phone/PAD/computer without any configuration, fast

access module for data transmission. In addition, you can login module internal web page

to set parameters

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<

< note

note

note >

>

>: module in AP mode, can support only 1

STA

access devices.

3.2.3

3.2.3 Encryption

Encryption

Encryption Type

Type

Encryption is scrambling to message data, ensure the security of data transmission,

increase the security of communication. Support multiple wireless network encryption

methods, including:

WEP

WPA-PSK/TKIP

WPA-PSK/AES

WPA2-PSK/TKIP

WPA2-PSK/AES

3.3

3.3 Socket

Socket

Socket Communication

Communication

The module has a TCP Socket. When the module in translate mode, to write the data of

the UART interface module, module will automatically send a Socket; Module through

the Socket received data, send out through the UART interface.

Socket works include: the TCP Server, the TCP Client, UDP Client, and UDP Server,

please refer to the

AT

command set method in the

AT

+ SOCKA instruction set or

through a web page Settings.

When a TCP Server Socket set, can support up to four TCP Client TCP link connection.

In a multiple TCP link connection mode, from the TCP transport data will be forwarded

to them one by one on the UART interface. Come from the UART interface data will be

copied into a more, in every TCP forwarding a link. Specific data flow diagram shown

below:

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When the Socket set to UDP Server, if a serial port receives data first, module sends

the data to the already set

IP,

port

(AT

+ SOCKA set), if the UDP Server receives data,

data source address, the module will remember after a serial port, after receipt of the

data module will be transmitted to the address data.

When the module is set to the UDP Client module only to have set the IP and port to

send data, and receive only has set the IP and port address data

(AT

+ SOCKA

Settings), other address to send more data is not forwarded to the UART.

3.4

3.4 Custom

Custom

Custom web

web

web function

function

USR

-

C322 support Custom web function. User can modify the web page content or add

your own web page. Please refer to the specific implementation method " reference : USR-C32 1

custom ed web function ".

3.

3. 5

5

5 Search

Search

Search in

in

in local

local

local area

area

area network

network

Module support within the local area network (LAN) search function, that is, when the

module is connected to a wireless router, the user can through to a fixed port sends UDP

broadcast way, to get the IP address of the module of the current, in order to realize the search

and communications equipment. SEARCH the port and keyword can be set by the

AT

+

SEARCH commands, default: 48899, www.usr.cn.

Search tool operation process:

1. Through the UDP broadcast (broadcast address: xx. Xx. Xx. 255, port: 48899) to send a

password, the default password is: "www.usr.cn", the longest can be set up 20 bytes.

2. Module after receiving the password, if the password is correct, the module to enter

configuration mode, to the address (unicast, source port) send the local IP address, MAC

address, the module name, version number.

(IP,

MAC, MID, ver 10.10.100.254,

D8B04CFC0000, USR - C321, 01.01.10). Module to enter configuration mode set if not

received within 30 seconds after the command, the module will exit the configuration mode, the

user needs to send search command word, enter configuration mode.

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3. Users can through the network to the port to send

AT

commands to set up and read the

module working state, the

AT

command format with a serial port the

AT

command.

Note: search tools and modules must be within the same LAN, if multiple

STA

even on a

router, run the search tools of the computer and even on the router. This search tool to search

all of the STA.

3.

3. 6

6

6 TCP/UDP

TCP/UDP

TCP/UDP Client

Client

Client Registration

Registration

Registration Packet

Packet

Packet Mechanism

Mechanism

When the module working in TCP or UDP Client Client mode, the user can open registration

packet mechanism, in order to realize the server to the distinction between the data source,

data of different equipment monitoring. MAC and ID registration packet is divided into two kinds,

MAC is 6 bytes, ID 0-65535, ID value can be set. Registration packet ID is mainly used for the

D2D software of the company..

Registered packet opened and closed by

AT

+ REGENA.

Registered packet implementation mechanism is as follows:

TCP Client: There are two kinds of TCP Client: registration mechanism:

1Just send a registration packet, when the module is connected to the TCP Server

module will send TCP Server MAC (6 bytes) or ID (4 bytes), Server by MAC or ID to

distinguish between different devices.

2Every packet of data has registration information, TCP Client after the link to the server,

a serial port receives each packet of data to increase MAC or ID, to distinguish between

equipment. ID or MAC choice, can be set by the

AT

+ REGENA.

UDP Client: each module on the sending UDP packets, MAC or ID will increase in each

packet header information, and then send.

3.

3. 7

7

7 Fast

Fast

Fast Access

Access

Access Wi-Fi(usrlink)

Wi-Fi(usrlink)

When one module works in AP mode, it opens a UDP port used to receive fast access Wi-Fi

commands, the port number is 49000. The phone PDA can directly connect to Wi-Fi network of

the module, send commands to search router list and set SSID and password. After the

completion of set up, module will automatically restart, connected to the router, work in the STA

mode at this time.

Protocol format:

Searching command

No Name Num of Bytes Description

1 head 1 fixed value:0xFF

2 length 2 Sum of data bytes from length bytes to check

byte(not contain length bytes and check byte).

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3 cmd 1 Command type, 0x01

4 check 1 Sum of bytes from head (not contained) byte to

check byte (not contained).

Response for searching

No Name Num of Bytes Description

1 head 1 fixed value:0xFF

2 length 2 Sum of data bytes from length bytes to check

byte(not contain length bytes and check byte).

3 cmd 1 Command type, 0x81

4 AP num 1 The number of AP what module scans

5 SSID1 Unsized The SSID of router 1

6 separator 1 Separator of SSID1, fixed value:0x00

7 Signal

strength1

1 Signal strength of router 1,0~100:0%~100%

8 separator 2 Separator of signal strength1, fixed value:

0x0D,0x0A

… … … ………

M SSID n Unsized The SSID of router n

M+1 separator 1 Separator of SSID n, fixed value:0x00

M+2 Signal

strength

1 Signal strength of router n,0~100:0%~100%

M+3 separator 2 fixed value:0x0D,0x0A

M+4 check 1 Sum of bytes from head (not contained) byte to

check byte (not contained).

Example:

Data from phone PDA to module (HEX): FF 00 01 01 02

Data from module to phone PDA (HEX): FF 00 14 81 02 54 45 53 54 31 00 40 0D 0A 54 45

53 54 32 00 37 0D 0A 1F

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Explanation:

The phone PDA send searching command to module, the response from module is: SSID

of router1 is “ TEST1 ” , signal strength of router1 is 64%; SSID of router2 is “ TEST2 ” , signal

strength of router2 is 55%.

Note: The information of routers is ordered by signal strength.

a) Setting Command

No Name Num of Bytes Description

1 head 1 fixed value:0xFF

2 length 2 Sum of data bytes from length bytes to check byte

(not contain length bytes and check byte).

3 cmd 1 Command type, 0x02

4 reserve 1 fixed value:0x00

5 SSID Unsized SSID of router

6 separator 2 fixed value:0x0D,0x0A

7 password Unsized Password of router

8 check 1 Sum of bytes from head (not contained) byte to

check byte (not contained).

Response for Setting

No Name Num of Bytes Description

1 head 1 fixed value:0xFF

2 length 2 Sum of data bytes from length bytes to check

byte(not contain length bytes and check byte).

3 cmd 1 Command type, 0x82

4 Check for

SSID

1 If the SSID set by PDA exist, check value is 0x01,

otherwise is 0x00.

5 Check for

password

1 If the form of password set by PDA is correct, check

value is 0x01, otherwise is 0x00.

6 check 1 Sum of bytes from head (not contained) byte to

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check byte (not contained).

Example:

Data from phone PDA to module (HEX): FF 00 0F 02 00 54 45 53 54 31 0D 0A 31 32 33 34

35 36 CE

Data from module to phone PDA (HEX): FF 00 03 82 01 01 87

Explanation:

The phone PDA send setting command to module, SSID is set to “ TEST1 ” , password is set

to “ 123456 ” . The response from module is that the “ TEST1 ” Wi-Fi network exist, the form of

password is correct.

3.

3. 8

8

8 Simplelink

Simplelink

Simplelink Configuration

Configuration

Simplelink function main realization module of intelligent network, namely the quick

connect to the

AP.

Modules work in

STA

and AP mode, lower Reload pin 0 to 3 seconds, the

module get into the Smartconfig configuration, at this time Ready pin output high and low

level of 0.5 Hz. The handheld device connected to the module to connect to the

AP,

open

the

APP,

enter the password, click on "start". Module will automatically restart after

successfully connect to the

AP.

Note

Note : when using the

AT

+ WSTA AP information query module is connected, password

show SAFE, password is not visible.

3.

3. 9

9

9 RFC2217

RFC2217

RFC2217 Automatic

Automatic

Automatic Baud

Baud

Baud Rate

Rate

Rate Function

Function

3.

3. 9

9

9 .1

.1

.1 RFC2217

RFC2217

RFC2217 Functional

Functional

Functional Description

Description

1. RFC2217 is an instant change via Ethernet equipment serial port parameters of a

standard protocol, this device supports a similar RFC2217 agreement, not a standard

RFC2217, realize the same function, but the deal easier.

2. Sends a command to the device after this agreement, if do set serial port parameters

meet the requirements, not return anything, if the calibration error or agreement is

wrong, will be as a common packet via a serial port forwarding.

3. TCP Client, TCP Server, UDP Client, and UDP Server, and broadcast the several

patterns are support this function.

4. This command changes take effect immediately, do not need to restart, when effective,

not save, power is lost.

3.9.2

3.9.2 RFC2217

RFC2217

RFC2217 Protocol

Protocol

Protocol Specification

Specification

Protocol length is 8 bytes, specific agreement content as follows, for example the value

for the HEX format:

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41

Attachment: a serial port parameters meaning a bit

Bit num Explain Data describe

1:0 Data bits 00 5 bits

01 6 bits

10 7 bits

11 8 bits

2 Stop bit 0 1 bit

1 2 bits

3 Enabled check 0 Disable check

1 Enable check

5:4 Check type 00 ODD

01 EVEN

10 Mark

11 Clear

7:6 NC 00 Write 0

3.

3. 10

10

10 Sleep

Sleep

Sleep Mode

Mode

Mode Introduction

Introduction

Modules can open low power mode. In module under normal condition, if the network and

uart port for certain time 10-240 seconds

(AT

+ SLPTYPE Settings) does not data

communication module into low power mode. The user can choose different sleep mode (0 to

4).

Ways there are to awaken the network side and serial port: network side refers to establish

the wifi connection, to establish a socket connection with module and send data to the socket, a

serial port end points to a serial port to send data.

For example: set up

AT

+ SLPTYPE = 2,200

When the module network end (refer to the socket end) and a serial port for 200 seconds

didn't receive the data, the module into Deepsleep mode (mode 2).

designation Header Bps Data bit Check

length(bytes) 3 3 1 1

explain

reduce

misjudg

ment

baud rate value,

high in the former

Different bits to

represent different

meanings, see

table

Sum of the

front four

Exam p le

(115200,N,8,

1)

55 AA

55

01 C2 00 83 46

Example

(9600,N,8,1)

55 AA55 00 25 80 83 28

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41

3.

3. 10

10

10 .1

.1

.1 Mode

Mode

Mode Introduction

Introduction

Mode

Mode 0:

0:

0: Active

Active

Active Mode

Mode

The Active mode, the system clock is 80 MHZ. Module running various peripherals.

Corresponding mode 0, that is, normal work mode, the module optimal performance.

Mode

Mode 1:

1:

1: Sleep

Sleep

Sleep Mode

Mode

Sleep mode, the system clock to 80 MHZ. Through a serial port or network packets,

gpio port output, module after awakening from entering hibernation continues to run, wake

up the response time shorter than deepsleep mode. Corresponding mode 1.

Mode

Mode 2:

2:

2: Deepsleep

Deepsleep

Deepsleep Mode

Mode

Module into deepsleep dormancy, reduced to 40 MHZ system clock. Might wake up via

a serial port or network packets, gpio port output, module after awakening from entering

hibernation continues to run, wake up the response time a bit longer than the sleep mode.

Than the normal operation of the lower power consumption about 5 ma. The corresponding

mode 2.

Mode

Mode 3:

3:

3: LPDS

LPDS

LPDS Mode

Mode

Module into LPDS mode, network part keep running, module gpio port output is high

impedance state. Via a serial port or network packets wake up, wake up after the restart

operation module. Corresponding mode 3.

Mode

Mode 4:

4:

4: Hibernate

Hibernate

Hibernate Mode

Mode

Module into the hibernate mode, network and MCU are entering sleep mode, gpio port

output high impedance state, only through a serial port data. Module after the restart. Power

consumption can be achieved the uA level. Corresponding mode 4.

3.

3. 10

10

10 .2

.2

.2 Power

Power

Power Reference

Reference

Reference Table

Table

No data transmission module, the power consumption mode reference is as follows:

Power

mode

UART 、GPIO 、network

Wake up mode STA AP

0

UART 、GPIO 、network

working

none 18 mA 74 mA

1

UART 、GPIO 、network

working

Uart,network 13 mA 71 mA

2 UART 、network working Uart,network 9 mA 70 mA

3 UART 、network working Uart,network 3.5 mA 70 mA

4 GPIO （RXD ）working Uart(RXD) 24 uA 24 uA

The mode to distinguish the table:

Powe

r

mode

Still working Wakeup source

Run

frequency

MCU WIFI UART GPIO network UART GPIO network

0 80M

    

1 80M

     

RXD



2 40M

     

RXD



3 32.768Khz

     

RXD



USR IOT USR-C321 User manual

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