Component: Bluetooth (RN4677) (RN4677) (Wireless)

Author	Matrix Ltd.
Version	1.4
Category	Wireless

Bluetooth (RN4677) component

Low level routines for controlling a Microchip RN4677 Bluetooth Module. Also available in the form of the BL0170 Bluetooth E-block. Uses an interrupt to receive characters from the UART and improve reliability, Must be used with a hardware UART channel.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_Bluetooth_RN4677.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_Bluetooth_RN4677.fcfx

Detailed description

No detailed description exists yet for this component

Examples

No additional examples

Macro reference

ReceiveByte

	ReceiveByte
Receives a single data byte from the Bluetooth module. 0-255 - Valid Data / 256 signifies no data available.
- UINT	Timeout
Amount of time to wait in milliseconds 0=Wait forever
- UINT	Return

SendString

	SendString
Sends a string to the Bluetooth module.
- STRING	Text
- BYTE	SendCR
- VOID	Return

LeaveCommandMode

	LeaveCommandMode
Leaves command mode allowing data to be passed back and forth,
- VOID	Return

ConnectToMAC

	ConnectToMAC
Connects to a specific Bluetooth MAC address. Waits up to 5 seconds for connection to be established. Returns 1 if connection was successful.
- STRING	MACAddress
MAC Address of the Bluetooth Device we wish to connect to
- BOOL	Return

SendCommand

	SendCommand
Sends a command string to the Bluetooth module. 0 = Command sent ok, 255 = No Reply
- STRING	Command
- BYTE	SendCR
- BYTE	DiscardReply
0=Do not touch the reply, 1=Wait for reply and remove from buffer
- BYTE	Return

ReadString

	ReadString
Copies the incoming data from the data string array to a local string variable.
- BYTE	NumBytes
Maximum number of bytes to try and read
- STRING	Return

SendByte

	SendByte
Sends a single data byte out to the Bluetooth module.
- BYTE	Data
- VOID	Return

EnterCommandMode

	EnterCommandMode
Enters command mode allowing commands to be sent using the SendCommand macro. Returns: 0 = No Reply / 1 = Command Mode OK
- BOOL	Return

WaitForStringValue

	WaitForStringValue
Allows us to wait and check for an incoming value. Returns 1 if the string value is found otherwise returns 0.
- STRING	Value
String value to look for
- UINT	Timeout
Length of time to wait in milliseconds
- BOOL	Return

GetMACAddress

	GetMACAddress
Gets the local Bluetooth device MAC address.
- STRING	Return

Initialise

	Initialise
Sets up the Bluetooth module including: - Enabling the UART - Configuring the module (Name / Key / etc) Returns 1 for OK and 0 for no reply.
- BYTE	Return

Property reference

	Properties
	Bluetooth Settings
	Init Details
Allows the Bluetooth device name and key to be automatically assigned on initialise.
	Device Name
Sets the friendly name of the Bluetooth device.
	Pair Key
	Discoverable
Is the Bluetooth module discoverable by default?
	Reply Timeout
Specifies the amount of time to wait for incoming data before timing out in milliseconds. Default 2000 = 2 seconds.
	RX Buffer Size
Amount of RAM memory to dedicate to receiving responses and incoming data from the BT module. Default 40
	Connections
	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.
	Baud Options
Baud rate option selector
	Baud Rate
	TX
Pin to be used for Transmit data
	TX Remap Pin
Allows the hardware transmit pin to be configured from a list of available pins based on your target device,
	RX
Pin to be used for Receive data
	RX Remap Pin
Allows the hardware receive pin to be configured from a list of available pins based on your target device,
	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.
	Reset Pin
	Simulation
	Simulate Comms
	Simulation
	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.
	Console Data
Selects if the console data is automatically generated or not
	Console Columns
Number of characters that can be displayed on a single line of the console.
	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 Injector - Routes the communication data via a data injector component on the Panel.