A000065

A000065 Datasheet

Code A000065

Part	Datasheet
A000065	A000065 (pdf)

PDF Datasheet Preview
ARDUINO WIRELESS SD SHIELD Code A000065 The Wireless SD shield allows an Arduino board to communicate wirelessly using a wireless Xbee module or similar plus a card slot OVERVIEW • The Wireless SD shield allows an Arduino board to communicate wirelessly using a wireless module. It is based on the Xbee modules from Digi, but can use any module with the same footprint. The module can communicate up to 100 feet indoors or 300 feet outdoors with line-of-sight . It can be used as a serial/usb replacement or you can put it into a command mode and configure it for a variety of broadcast and mesh networking options. The shields breaks out each of the Xbee's pins to a through-hole solder pad. Included on board is a SD card slot. When using the SD Library to access the card, Pin 4 is CS and cannot be used otherwise. SPI also relies on pins 11, 12, and 13 for communication. An on-board switch allows the wireless module to communicate with the USB-toserial converter or with the microntroller. • Switch Settings The Wireless SD shield has an on-board switch labelled Serial Select. It determines how the Xbee's serial communication connects to the serial communication between the microcontroller ATmega8 or ATmega168 and USB-to-serial chip on the Arduino board. When in the Micro position, the DOUT pin of the wireless module is connected to the RX pin of the microcontroller and DIN is connected to TX. The wireless module will then communicate with the microcontroller. Note that the RX and TX pins of the microcontroller are still connected to the TX and RX pins respectively of the USB-to-serial converter. Data sent from the microcontroller will be transmitted to the computer via USB as well as being sent wirelessly by the wireless module. The microcontroller will not be programmable via USB in this mode. With the switch in the USB position, the DOUT pin the wireless module is connected to the RX pin of the USB-to-serial converter, and DIN on the wireless module is connected to the TX pin of the USB-to-serial converter. This means that the module can communicate directly with the computer. The microcontroller on the board will be bypassed. To use the shield in this mode, you must program the microcontroller with an empty sketch shown below , or remove it from the board. Empty sketch: void setup void loop Networking [Get Code] The Wireless SD shield can be used with different modules with the same footprint as the XBeemodules. The instructions below are for the XBee modules sometimes called "Series 1" to distinguish them from the Series 2 modules, although "Series 1" doesn't appear in the official name or product description and also for the XBee ZNet or XBee ZB modules, both known as "Series 2" modules. All the modules, basically have the same type of configuration parameters, but differ by the function that they implement and the topologies of networks that they can create. Can communicate with each other only modules of the same family. Addressing There are multiple parameters that need to be configured correctly for two modules to talk to each other although with the default settings, all modules should be able to talk to each other . They need to be on the same network, as set by the ID parameter see "Configuration" below for more details on the parameters . The modules need to be on the same channel, as set by the CHparameter. Finally, a module's destination address DH and DL parameters determine which modules on its network and channel will receive the data it transmits. This can happen in a few ways: • If a module's DH is 0 and its DL is less than 0xFFFF i.e. 16 bits , data transmitted by that module will be received by any module whose address MY parameter equals DL. • If DH is 0 and DL equals 0xFFFF, the module's transmissions will be received by all modules. • If DH is or DL is greater than 0xFFFF, the transmission will only be received by the module whose serial number equals the transmitting module's destination address i.e. whose SH equals the transmitting module's DH and whose SL equals its DL . Again, this address matching will only happen between modules on the same network and channel. If two modules are on different networks or channels, they can't communicate regardless of their addresses. For the "Series 2" modules you must chose which firmware put on the module to give it Coordinator, Router or End Device functionality. Series 2 use only serial low SL and serial high SH for addressing. Configuration Here are some of the more useful parameters for configuring your Xbee module. For step-by-step instructions on reading and writing them using AT commands, see the: • guide to the Wireless shield with the modules. • guide to the Wireless shield with the ZNet modules. Make sure to prepend AT to the parameter name when sending a command to the module e.g. to read the ID parameter, you should send the command ATID . Command Description Valid Values Default Value The network ID of the XBee module. 0 0xFFFF 3332 The channel of the XBee module. 0x0B 0x1A 0X0C SH andSLThe serial number of the XBee module SH gives the high 32 bits, SL the low 32 bits . 0 different for each module bothSH andSL The address of the module. 0 0xFFFF DH andDLThe destination address for wireless communication DH is the high 32 bits, DL the low 0 for

PDF Datasheet Preview

ARDUINO WIRELESS SD SHIELD

Code A000065

The Wireless SD shield allows an Arduino board to communicate wirelessly using a wireless Xbee module or similar plus a card slot OVERVIEW
• The Wireless SD shield allows an Arduino board to communicate wirelessly using a wireless module. It is based on the Xbee modules from Digi, but can use any module with the same footprint. The module can communicate up to 100 feet indoors or 300 feet outdoors with line-of-sight . It can be used as a serial/usb replacement or you can put it into a command mode and configure it for a variety of broadcast and mesh networking options. The shields breaks out each of the Xbee's pins to a through-hole solder pad.

Included on board is a SD card slot. When using the SD Library to access the card, Pin 4 is CS and cannot be used otherwise. SPI also relies on pins 11, 12, and 13 for communication. An on-board switch allows the wireless module to communicate with the USB-toserial converter or with the microntroller.
• Switch Settings The Wireless SD shield has an on-board switch labelled Serial Select. It determines how the Xbee's serial communication connects to the serial communication between the microcontroller ATmega8 or ATmega168 and USB-to-serial chip on the Arduino board.

When in the Micro position, the DOUT pin of the wireless module is connected to the RX pin of the microcontroller and DIN is connected to TX. The wireless module will then communicate with the microcontroller. Note that the RX and TX pins of the microcontroller are still connected to the TX and RX pins respectively of the USB-to-serial converter. Data sent from the microcontroller will be transmitted to the computer via USB as well as being sent wirelessly by the wireless module. The microcontroller will not be programmable via USB in this mode.

With the switch in the USB position, the DOUT pin the wireless module is connected to the RX pin of the USB-to-serial converter, and DIN on the wireless module is connected to the TX pin of the USB-to-serial converter. This means that the module can communicate directly with the computer. The microcontroller on the
board will be bypassed. To use the shield in this mode, you must program the microcontroller with an empty sketch shown below , or remove it from the board.

Empty sketch:
void setup void loop

Networking
[Get Code]

The Wireless SD shield can be used with different modules with the same footprint as the XBeemodules. The instructions below are for the XBee modules sometimes called "Series 1" to distinguish them from the Series 2 modules, although "Series 1" doesn't appear in the official name or product description and also for the XBee ZNet or XBee ZB modules, both known as "Series 2" modules. All the modules, basically have the same type of configuration parameters, but differ by the function that they implement and the topologies of networks that they can create. Can communicate with each other only modules of the same family.

Addressing

There are multiple parameters that need to be configured correctly for two modules to talk to each other although with the default settings, all modules should be able to talk to each other . They need to be on the same network, as set by the ID parameter see "Configuration" below for more details on the parameters . The modules need to be on the same channel, as set by the CHparameter. Finally, a module's destination address DH and DL parameters determine which modules on its network and channel will receive the data it transmits. This can happen in a few ways:
• If a module's DH is 0 and its DL is less than 0xFFFF i.e. 16 bits , data transmitted by that module will be received by any module whose address MY parameter equals DL.
• If DH is 0 and DL equals 0xFFFF, the module's transmissions will be received by all modules.
• If DH is or DL is greater than 0xFFFF, the transmission will only be received by the module whose serial number equals the transmitting module's destination address i.e. whose SH equals the transmitting module's DH and whose SL equals its DL .

Again, this address matching will only happen between modules on the same network and channel. If two modules are on different networks or channels, they can't communicate regardless of their addresses.

For the "Series 2" modules you must chose which firmware put on the module to give it Coordinator, Router or End Device functionality. Series 2 use only serial low SL and serial high SH for addressing.

Configuration

Here are some of the more useful parameters for configuring your Xbee module. For step-by-step instructions on reading and writing them using AT commands, see the:
• guide to the Wireless shield with the modules.
• guide to the Wireless shield with the ZNet modules.

Make sure to prepend AT to the parameter name when sending a command to the module e.g. to read the ID parameter, you should send the command ATID .

Command Description

Valid Values

Default Value

The network ID of the XBee module.
0 0xFFFF
3332

The channel of the XBee module.
0x0B 0x1A
0X0C

SH andSLThe serial number of the XBee module SH gives the high 32 bits, SL the low 32 bits .
0 different for
each module
bothSH andSL

The address of the module.
0 0xFFFF

DH andDLThe destination address for wireless communication DH is the high 32 bits, DL the low
0 for

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived A000065 Datasheet file may be downloaded here without warranties.

Datasheet ID: A000065 518298