This directory contain all files needed to support A2DP bluetooth module based on Beken BK8000L chip and also untested support for BK8002 based modules.
BK8000L (F-6188 module at least) have AT command control support, supported commands are described here
this is for testing if your module has serial interface enabled:
| BK8000L | computer(USB2serial for example) |
|---|---|
| RX | TX |
| TX | RX |
| GND | GND |
| VBAT | via diode to 5V |
Uncoment "#define USE_SW_SERIAL" in BK8000L.h to enable software serial support.
| BK8000L | computer(USB2serial for example) |
|---|---|
| RX | 7 (1st parameter of SoftwareSerial in example) |
| TX | 6 (2nd parameter of SoftwareSerial in example) |
| RESET | 5 (defined as resetBTpin in example) |
| GND | GND |
| VBAT | via diode to 5V |
| BK8000L | computer(USB2serial for example) |
|---|---|
| RX | TX1 (if using Serial1) |
| TX | RX1 (if using Serial1) |
| RESET | 5 (defined as resetBTpin in example) |
| GND | GND |
| VBAT | via diode to 5V |
Information about using libraries on arduino site
Copy content of this repository directory or just this two files: BK8000L.cpp, BK8000L.h to ~/Arduino/libraries/BK8000L/ directory (if did not exist, create one). Open new project in arduino and use this code, or check code in examples directory BK8000L.ino:
#include "BK8000L.h"
#include <SoftwareSerial.h> //if using SW, with HW no need for this
#define resetBTPin 5
SoftwareSerial swSerial(7, 6); //rxPin, txPin
BK8000L BT(&swSerial, resetBTPin); //in case of HW serial use for example: (&Serial1)
void(){
BT.begin(); //or BT.begin(9600); for specific baudrate
}
void loop(){
//should be call periodically, to get notifications from module, for example if someone calling...
BT.getNextEventFromBT();
}for more examples look ate examples/BK8000L/BK8000L.ino
begin(uint32_t baudrate); //parameter baudrate is communication speed between MCU and arduino, default 9600
sendData(String cmd); //construct string of AT+cmd and send it to serial port
sendAPTData(String cmd); //construct string of APT+cmd and send it to serial port
getNextEventFromBT(); //parse data send from module and set internal variales, call this periodicaly to parse data received from module ASAP
PairingInit(); //initialize pairing mode
PairingExit(); //exit pairing mode
ConnectLastDevice(); //connect to last device
Disconnect(); //disconnect from currently connected device
callAnsware(); //answare currently receiving call, see CallerID variable to see who is calling
callReject(); //reject currently receiving call, see CallerID variable to see who is calling
callHangUp(); //hang up current call, see CallerID variable to see who you are calling with
callRedial(); //call last dialed number, see CallerID variable to see who you dialing
volumeUp(); //set volume up
volumeDown(); //set volume down
languageSwitch(); //did not understand what is this doing based on provided info in datasheet (sending AT+CM)
channelSwitch(); //did not understand what is this doing based on provided info in datasheet (sending AT+CO)
shutdownBT(); //shutdown BT module
switchInput(); //switch to AUX input
openPhoneVoice(); //did not understand what is this doing based on provided info in datasheet (sending AT+CV)
memoryClear(); //did not understand what is this doing based on provided info in datasheet (sending AT+CZ)
languageSetNumber(uint8_t number); //did not understand what is this doing based on provided info in datasheet (sending AT+CM+number)
musicTogglePlayPause(); //toggle play/pause music on mobile phone
musicStop(); //stop playing music
musicNextTrack(); //switch to next track
musicPreviousTrack(); //switch to previous track
musicFastForward(); //fast forward current track
musicRewind(); //rewind current track
getName(); //get bluetooth module name
getConnectionStatus(); //get BT connection status
getPinCode(); //get pin
getAddress(); //get HW address of module
getSoftwareVersion(); //get SW version of module (this one did not work for me)
MusicGetStatus(); //get playback status
getHFPstatus(); //get BT connection status
resetModule(); //reset module, for example to start it againAs far as getNextEventFromBT() is called periodically, the library will update state variables based on the response from module. Function getNextEventFromBT() is called at the end of all functions mentioned above to handle response sent from the bluetooth module asap.
Library has its own variables, which are set/updated when data are received from module:
String BT_ADDR; // updated after getAddress() is called
String BT_NAME; // updated after getName() is called
String BT_PIN; // updated after getPinCode() is called
String CallerID; // updated automatically or by calling getHFPstatus()
uint8_t BTState; // enum, updated automatically or by calling getHFPstatus() or getConnectionStatus()
uint8_t CallState; // enum, updated automatically or by calling callRedial() or getHFPstatus()
uint8_t MusicState; // enum, updated automatically or by calling getMusicStatus()
uint8_t PowerState; // enum, updated automaticaly or by calling getHFPstatus(),getMusicStatus() or getConnectionStatus()If you init BK8000L library as in example code this variables can be accessed directly from main sketch with prefix BT, for example:
Serial.print(BT.BT_NAME);BTState, CallState, MusicState and PowerState have these states, these are accessible from main sketch with prefix like other variable:
BT.Playing; // responce from module "MA"
BT.Idle; // responce from module "MB"
BT.IncomingCall; // responce from module "IR- or M2"
BT.OutgoingCall; // responce from module "PR- or M3"
BT.CallInProgress; // responce from module "M4"
BT.Connected; // responce from module "M1"
BT.Disconnected; // responce from module "M0"
BT.On; // responce from module "ON"
BT.Off; // set if shutdownBT() is called
BT.Pairing; // set if PairingInit() is calledthese can be used to triger actions in main sketch based on change of module state see BK8000L.ino in examples directory.