Component: Bluetooth (EB024, Generic AT) (Wireless)

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Author Matrix Ltd.
Version 2.0
Category Wireless


Bluetooth (EB024, Generic AT) component

Low level routines for controlling a standard AT Bluetooth interface. Also available in the form of the EB024 Bluetooth E-block.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_Bluetooth.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_Bluetooth.fcfx

Detailed description

No detailed description exists yet for this component

Examples

Making a device discoverable

Example program to set up the Bluetooth module to be discoverable with a pair key. Any data received is then output onto the LCD component. You can connect to the Bluetooth device using a PC with Bluetooth connection and using software such as Flowcode 6, RealTerm or HyperTerminal. Alternatively you can connect using a smart phone running a terminal emulator app or via another embedded Bluetooth board. FC6 Icon.png Bluetooth Discover Script 1 contains the AT commands to setup the Bluetooth device to be discoverable with pair key "1234".

DiscoverableScript.jpg


Searching for a device

Example program to scan for local discoverable Bluetooth devices. For each device found the MAC address is displayed on to the LCD. FC6 Icon.png Bluetooth Inquiry

Connecting to a device

Example program to connect to a specific Bluetooth device address and send data to the device. FC6 Icon.png Bluetooth Connect The device MAC address is specified using the "CreateCommandString" and "SendCommand" macros.

ConnectToMAC.jpg






Macro reference

CreateCommand

Fc9-comp-macro.png CreateCommand
Adds a single characters to the end of the Command buffer. Returns 1 for success in adding the characters to the buffer. Returns 0 for errors, including Buffer overflow. 
Fc9-u8-icon.png - BYTE Character
ASCII value or single character, 
Fc9-u8-icon.png - BYTE Return


CreateCommandString

Fc9-comp-macro.png CreateCommandString
Assigns a string of characters to the Command buffer. Returns 1 for success in adding the characters to the buffer. Returns 0 for errors, including Buffer overflow. 
Fc9-string-icon.png - STRING Data
 
Fc9-u8-icon.png - BYTE Return


Initialise

Fc9-comp-macro.png Initialise
Required to be used whenever the Bluetooth component is used in a program. Initialises the Bluetooth component ready for use. 
Fc9-void-icon.png - VOID Return


SendCommand

Fc9-comp-macro.png SendCommand
Sends the command buffer. Returns 1 for success in sending the command. Returns 0 for errors. 
Fc9-u8-icon.png - BYTE ExpectEcho
Remote module automatically echos back data: 1 = On (Expect echo), 0 = off 
Fc9-u8-icon.png - BYTE SendCR
Automatically adds \n to the end of the command data: 1 = append CR, 0 = no CR. 
Fc9-u8-icon.png - BYTE Return


SendScript

Fc9-comp-macro.png SendScript
Sends Script idx Note that the general property Number of Scripts needs to be set so that it allows the scripts to be accessed and sent. Returns 0 for success and 1 for error  
Fc9-u8-icon.png - BYTE idx
Refers to the Script page to send (1-4). 
Fc9-u8-icon.png - BYTE Return


Send_byte

Fc9-comp-macro.png Send_byte
 
Fc9-u8-icon.png - BYTE ByteVal
 
Fc9-void-icon.png - VOID Return


StringRead

Fc9-comp-macro.png StringRead
Returns the ASCII value of character idx of the Response string. 
Fc9-u8-icon.png - BYTE idx
Needs to be a equal to or less than the string length of the response in order to retrieve a valid character. 
Fc9-u8-icon.png - BYTE Return


StringReceive

Fc9-comp-macro.png StringReceive
Checks for a response string. Returns the length of the response string if one is present otherwise returns 0.  
Fc9-u8-icon.png - BYTE Return


WaitForResponse

Fc9-comp-macro.png WaitForResponse
Waits for a response message of type response_code for timeout ms. Returns: 0 for a Response of type response_code 255 (0xFF) for a timeout or invalid response Response string length for any Response not of type response_code 
Fc9-u8-icon.png - BYTE response_code
1:OK / 2:ERROR / 3:CONNECT / 4:NO CARRIER / 5:AUDIO / 6:PAIR / 7:RING 
Fc9-u8-icon.png - BYTE timeout
The timeout value will need to set to allow sufficient time for the response to arrive. 
Fc9-u8-icon.png - BYTE Return


Property reference

Fc9-prop-icon.png Properties
Fc9-type-21-icon.png Command Buffer Size
Maximum number of bytes that can be stored in the outgoing command buffer. 
Fc9-type-21-icon.png Response Buffer Size
Maximum number of bytes that can be stored in the incoming response buffer. 
Fc9-type-16-icon.png Script Count
Controls how many AT scripts are stored into non-volatile memory 
Fc9-type-11-icon.png Script 1
Data to send for script 0, each command should be terminated with a carriage return 
Fc9-conn-icon.png Connections
Fc9-type-16-icon.png Channel
UART Channel selector Software channels are bit banged using generic I/O pins but are not as reliable as hardware channels. Hardware channels use the selected peripheral on-board the target microcontroller. 
Fc9-type-5-icon.png TX
Pin to be used for Transmit data 
Fc9-type-5-icon.png RX
Pin to be used for Receive data 
Fc9-type-16-icon.png Use Flow Control
Flow Control (Handshake) enable or disable. On: Two I/O pins are used to control the flow of data in and out of the device. Off: Flow control is disabled. 
Fc9-type-16-icon.png Baud Options
Baud rate option selector 
Fc9-type-14-icon.png Baud Rate
 
Fc9-conn-icon.png Simulation
Fc9-type-21-icon.png Console Columns
Number of characters that can be displayed on a single line of the console. 
Fc9-type-7-icon.png Console Data
Selects if the console data is automatically generated or not 
Fc9-type-7-icon.png Scope Traces
Selects if the scope traces are automatically added to the data recorder window or not. Simulation - draws an approximation of the UART data onto the scope trace. ICT - sets up the scope trace for incoming data and adds UART packet decoding at the correct BAUD. 
Fc9-type-16-icon.png Data Source
Simulation data source used to allow the component to connect to various remote devices Nothing - Simulation data is ignored COM port - Routes the communication data to and from a physical or virtual COM port API - Routes the communication data via a data API component on the Panel. 
Fc9-type-16-icon.png API
Selects whichAPI component to route the communication data via. Add API components to the panel before they will be available in this list. API components are available from the Comms component category.