Component: Bluetooth (ESP32 SPP) (Wireless)

Author	Matrix TSL
Version	1.0
Category	Wireless

Bluetooth (ESP32 SPP) component

Bluetooth slave component designed to run on a ESP32 providing legacy SPP functionality. BT Legacy functionality must be switched on via the sdkconfig file.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_Bluetooth_ESP32_SPP.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_Bluetooth_ESP32_SPP.fcfx

Detailed description

No detailed description exists yet for this component

Examples

A simple example file showing how to send and receive data using the ESP32 Bluetooth Serial Port Profile.

ESP_BT

The SPP legacy bluetooth mode must be enabled in the ESP32 config file to allow SSP to work. For details please see this forum topic.

For problems sending strings or missing data bytes, please see this forum topic.

Macro reference

ReceiveByte

	ReceiveByte
Attempts to receive a byte from the bluetooth serial port. 0-255 = a valid received value 256 = a timeout has occured
- UINT	Timeout
Number of ms to wait for incoming data
- UINT	Return

SendString

	SendString
Sends a string to the Bluetooth serial connection
- STRING	Data
Data Array to send
- VOID	Return

ReceiveINTArray

	ReceiveINTArray
Receives an array of 16-bit INT/UINT values and returns the number of values received.
- UINT	Data
Array to store the incoming data
- BYTE	NumValues
Maximum number of values to try and receive
- BOOL	MSBfirst
0=Least significant byte first, 1=Most significant byte first
- BYTE	Timeout
Max amount of time in ms to wait between bytes
- BYTE	Return

SendINTArray

	SendINTArray
Transmits an array of 16-bit INT/UINT values via the Bluetooth peripheral
- UINT	Data
Data Array to send
- BYTE	NumValues
Number of 16-bit values to send from the array
- BOOL	MSBfirst
0=Least significant byte first, 1=Most significant byte first
- VOID	Return

CheckConnectionStatus

	CheckConnectionStatus
Checks to see if the Bluetooth device is connected. Returns 1 if connected.
- BOOL	Return

ReceiveCount

	ReceiveCount
Collects the number of bytes currently stored in the receive buffer.
- UINT	Return

ReceiveArray

	ReceiveArray
Attempts to receive an array of bytes from the bluetooth serial port. Returns the number of bytes received.
- BYTE	Data
Buffer to place received data into
- UINT	MaxBytes
Max number of bytes to try and read within the time
- UINT	Timeout
Number of ms to wait for incoming data
- UINT	Return

SendArray

	SendArray
Sends a byte to the Bluetooth serial connection
- BYTE	Data
Data Array to send
- UINT	NumBytes
Number of bytes to send
- VOID	Return

SendByte

	SendByte
Sends a byte to the Bluetooth serial connection
- BYTE	Data
- VOID	Return

ReceiveString

	ReceiveString
- UINT	MaxBytes
Max number of bytes to try and read within the time
- UINT	Timeout
Number of ms to wait for incoming data
- STRING	Return

Initialise

	Initialise
Starts up the Bluetooth communications SPP service.
- VOID	Return

Property reference

	Properties
	Device Name
Sets the Bluetooth device friendly name
	Receive Buffer
Configures the size of the receive buffer in bytes to store incoming data until we are ready to receive it.
	Data Receive Interrupt
	Verbose Debug
When enabled debug messages will be placed onto UART CH1 which is generally connected to via a Serial to USB IC to pipe messages back to the host PC.
	Simulation
	COM Port
Selects which port to communicate with, only lists ports which are currently available.
	Refresh COM Ports
When set to yes the COM port list is rescanned for newly connected or available ports. Note that refreshing the ports list may take a few seconds depending on the number of connected ports.
	Baud
Baud rate passed to the COM port to control the rate of data.
	Console Data