Microchip Technology TCP 17051 Bedienungsanleitung

Lab Manual for TCP 17051

Page | 1

MASTERs 2013

Lab Manual for TCP 17051

Table of Contents

Hardware Architecture 2

Lab 1 Instructions 4

Appendix A: Command Reference 12

Appendix B: Reference documents 17

Appendix C: Schematics 18

Adding Wi-Fi to Embedded Designs

Using the RN-131/RN-171 modules

Lab Manual for TCP 17051

Page | 2

Hardware Architecture: Development Environment

UART Interface (J3)

RX - input to evaluation

board

TX - output from evaluation

board

Description

3.3 VDC output

GND

UART RX

UART TX

UART RTS

UART CTS

GPIO4

GPIO5

GPIO6

GPIO7

GPIO8

GPIO9

Reset

Sensors (J1)

Description

Sensor Power

Sensor 4 (3.3-V tolerant)

Sensor 5 (3.3-V tolerant)

Sensor 7 (1.2 V only)

Sensor 5 (1.2 V only)

Sensor 4 (1.2 V only)

Sensor 6 (1.2 V only)

Sensor 3 (1.2 V only)

GND

WARNING: Sensors must not

have more than 1.2-V DC.

Otherwise, the module may be

permanently damaged.

Table 1. RN-131-EK Evaluation Board LED Indicators

Condition

Blue LED

Red LED

Yellow LED

Green LED

On solid!

Unused

Connected over

TCP

Fast blink!

Unused

Not associated!

Rx/Tx data transfer!

No IP address

Slow blink!

Unused

Associated, no

Internet!

IP address OK

Off!

Unused!

Associated, Internet

OK!

Sensor

Interface (J1)

LED Indicators

UART Interface

(J3)

Reset

Pushbutton

USB

Connector

AP/WPS/Factory Reset

Pushbutton (GPIO9)

95234678 1

Lab Manual for TCP 17051

Page | 3

Lab Equipment

For this lab, you need the following hardware and software.

Hardware

•RN-131-EK evaluation board, which contains the RN-131 WiFly module

•Personal computer with a USB port

•USB cable to interface the RN-131-EK to the PC

•Access point(s) configured with WAP2 security (this hardware is already set up in

the lab by the instructor)

Software

•Tera Term software (http://sourceforge.jp/projects/ttssh2/releases/)

Access Point Setup

•We have four Access Points set up for this class, each having a unique SSID

•Three Access Point are configured with WAP2-Personal encryption

•One Access Point is open (has no security enabled)

Lab Manual for TCP 17051

Page | 4

Lab 1: Association and Data Transmission over TCP

Purpose:

This lab will teach you how to:

•Configure the module’s parameters.

•Scan, join, and authenticate to wireless networks.

•Discover the WiFly module on your wireless network via UDP.

•Send data over TCP using the RN-131-EK to your lab partner.

Page | 5

Overview:

The following steps will show you how to:

1. Set up the hardware.

2. Configure the module on the evaluation kit.

3. Associate with a network.

4. Discover the module on the network via UDP broadcast.

5. Send data to your lab partner using TCP.

Part 1: Hardware Setup

1. Connect the evaluation board.

a. Connect the RN-131-EK board to your computer using the USB cable.

b. Use the device manager to find the COM port. See the following figures.

2. Launch the Tera Term terminal software from your PC.

a. Choose Serial.

b. In the drop-down menu, select the COM port you found in step 1b.

Lab Manual for TCP 17051

Page | 6

3. Configure the RN-131-EK to enter command mode:

a. Type the escape sequence (three dollar signs, $$$).

b. The module responds with CMD. When you press the enter key, Tera Term

console displays the version prompt.

4. Review the module’s configuration and initialize the module to the factory default

conditions:

a. Check the configuration and firmware version:

i. ver

b. Perform a factory reset (starts the module in a known state):

i. factory RESET

ii. reboot

You have completed the hardware setup.

Example Output:

CMD

<4.00> ver

wifly-GSX Ver 4.00.1, Apr 19 2013 11:48:31 on RN-131

<4.00> factory RESET

Set Factory Defaults

<4.00> reboot

*Reboot*.wifly-GSX Ver 4.00.1, Apr 19 2013 11:48:28 on RN-131

MAC Addr=00:06:66:21:3a:08

*READY*

Lab Manual for TCP 17051

Page | 7

Part 2: Associating with a Wireless Network (Access Points)

1. Search for wireless networks.

a. $$$ (enter command mode)

b. scan

Example Output:

<4.00> scan

<4.00>

SCAN:Found 15

01,01,-69,08,1104,28,00,00:1a:70:74:15:43,youllneverbelievewhatsinside

02,01,-67,08,3104,28,00,06:90:e8:25:54:86,Moxa

03,01,-73,08,3104,28,00,84:c9:b2:65:5b:54,ADoctorADayKeepsAnAppleAway

04,01,-70,08,3104,28,00,00:15:f9:38:bd:b0,laptastic

05,01,-66,04,1100,28,c0,00:22:3f:6b:95:42,SensorNet

06,01,-74,04,3100,28,00,e0:91:f5:a9:8a:a0,accelbiotech

07,06,-58,06,3100,14,00,d8:c7:c8:aa:e7:a0,mchp-peap

08,06,-65,00,2100,00,00,d8:c7:c8:aa:e7:a1,guest

09,06,-57,08,3100,28,00,d8:c7:c8:aa:e7:a2,mchp-secure

10,06,-52,04,3104,28,00,b8:c7:5d:06:d0:2b,

11,06,-53,04,3104,28,00,00:26:f2:4f:89:d6,roving-guest

12,09,-49,04,3104,28,00,e0:91:f5:57:a3:54,

13,11,-48,04,3104,28,00,00:16:b6:45:63:98,CoolBox

14,11,-64,04,3108,28,00,00:14:d1:af:12:0c,roving1

15,11,-72,00,2100,40,40,00:18:02:70:7e:e8,GPT

END:

The scan output format is shown below:

Index

Channel

RSSI

Security

Mode

Capabilities

WPA

Configuration

WPS

Mode

MAC

Address

SSID

For a more detailed description of the scan output fields, refer to the WiFly Command

Reference, Advanced Features & Applications User’s Guide.

NOTE 1: If you do not see the desired access point in the list, re-issue the scan

command.

2: The module does not display hidden access points in the scan output.

Lab Manual for TCP 17051

Page | 8

2. Auto-join a network with persistent configuration.

a. set wlan ssid <string> // AP name

b. set wlan pass <string> // AP passphrase

c. set wlan join 1 // Enable auto-join to AP after reboot

d. set option deivce-id <string> //Give your module a unique device name

e. save

f. reboot

Example Output:

<4.00> set wlan ssid roving1

AOK

<4.00> set wlan pass rubygirl

AOK

<4.00> set wlan join 1

AOK

<4.00> save

Storing in config

<4.00> reboot

*Reboot*.wifly-GSX Ver 4.00.1, Apr 19 2013 11:48:28 on RN-131

MAC Addr=00:06:66:21:3a:08

*READY*

Auto-Assoc roving1 chan=11 mode=MIXED SCAN OK

Joining roving1 now..

Associated!

DHCP: Start

DHCP in 17ms, lease=60s

IF=UP

DHCP=ON

IP=172.35.1.13:2000

NM=255.255.0.0

GW=172.35.0.1

Listen on 2000

TIP: If the network is secure, set the pass phrase with set wlan pass <string> before

joining the network.

Lab Manual for TCP 17051

Page | 9

Part 3: Discovering Your Devices on the Network Using the UDP Broadcast

Protocol

NOTE: You will be observing this section. There is no action required.

The following figure illustrates device discovery via UDP broadcast. The module sends a

UDP broadcast at programmable intervals to make itself discoverable. The UDP

broadcast contains information that identifies the module on the network.

Device Discovery via UDP Broadcast

The UDP broadcast is a fixed 110 byte packet with the following structure:

Roving

Networks

Device

192.168.0.3

Access Point

DHCP server

Roving

Networks

Device

192.168.0.2

192.168.0.1

174.201.25.16

To Internet

Roving

Networks

Device

Roving

Networks

Device Roving

Networks

Device

Roving

Networks

Device

Roving

Networks

Device

192.168.0.4

192.168.0.5

192.168.0.6

192.168.0.7

192.168.0.8

192.168.0.100

UDP Server

Who is

there

I’m

here

I’m

here

I’m

here

I’m

here

I’m

here

I’m

here

I’m

here

0 - 5 6 7 8 - 9 10 - 13 14 - 15 16 - 17 18 - 31 32 - 59 60 - 91 92 - 93 94 - 110

Programmable Device ID Set with set option deviceid <string> (32 Bytes)

Version String with Date Code (26 Bytes)

ASCII Time (13 Bytes)

GPIO Pin Value (2 Bytes)

Access Point’s MAC Address (6 Bytes)

Channel (1 Byte)

RSSI (1 Byte)

Local TCP Port (2 Bytes)

Pin 20’s Battery Voltage in mV, e.g., 2755 (2 Bytes)

RTC Value, MSB to LSB (4 Bytes)

Position

Sensor 0 - 7 Voltage Readings Enabled with set opt format <mask>(16 Bytes)

Boot Time in ms (2 Bytes)

Lab Manual for TCP 17051

Page | 10

Part 4: Communicating with your lab partner over TCP

This lab section will teach you how to:

•Connect from the module to a remote host using TCP (client).

•Connect to module from remote host using TCP (server).

Student A’s module initiates the TCP open and acts as the client. Student B’s module

accepts the TCP connection and acts as the server.

TCP connections are point-to-point connections that provide reliable, guaranteed, in

order data delivery. They are also known as sockets. See the following figure.

TCP Connections

1. Restore the module to the factory defaults:

a. $$$ // Enter command mode.

b. factory RESET // Restore module to factory defaults

c. reboot // Reboot module with factory defaults

2. Associate with AP

a. $$$ // Enter command mode

b. set wlan ssid <string> // Enter AP SSID

c. set wlan pass <string> // Enter AP passphrase

d. set wlan join 1 // Enable auto join

e. save

f. reboot

WiFly Module Opens TCP Connection

Sensing applications

Sending data to web server

Data acquisition systems

Fleet management

Remote Host Opens TCP Connection

Industrial controls

Home automation

Universal remotes

open 192.168.1.200 5000 open 192.168.1.50 2000

RN-134-K

192.168.1.50

Listen on Port 2000

Access Point

DHCP server

Remote

Host

192.168.1.200

Listen on Port 5000

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