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Support for Master mode, Pin and SSP (#3219)

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* 20190916 - initial: support for Master mode, Pin and SSP

* 20190916 - initial: Add example app for Master mode

* 20190916 - initial: Force another build

* 20190916 - connect would use resolved address as preference and remove now redundant _remote_address

* 20190916 - rework set/reset/default pin logic

* 20190916 - cleanup: remove static vars, add/use constants, fix typos

* 20190916 - fix build issues and implement geoup events for status verification.

* 20190916 - remove extra lines,misc

* 20190916 - rework ESP_BT_GAP_DISC_RES_EVT, added SPP_DISCONNECTED bit for disconnect event. + timeout for disconnect()

* 20190916 - Small log change to improve log sequencing

* 20190916 - remove static from local vars

* 20190916 - Limited scope and duration for the scan, log device address during scan in info mode as it is very difficult to find out sometimes. Fixed get_name_from_eir() not resetting the name when called.

* 20190916 - break property for loop during scan when name matches.

* 20190916 - misc

* 20190916 - SPP_DISCONNECT state updates

* 20190916 - formatting, remove some strange syntax from initiator code

* 20190916 - Add comments to the example about connect(...) usage and timeouts

* 20190916 - fix disconnect() without timeout

* 20190916 - Add example comment to view BT address and name during connect(name)

* 20190916 - wording in example comments

* 20190916 - rework connect() and disconnect() methods to help with concurrency and more authoritative status returned back to caller. Automatic disconnect in connect() methods

* 20190916 - optimize code

* 20190916 - optimize code - more

* 20190916 - add timeout for pin set

* 20190916 - change scan mode to ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE

* 20190916 - update example code slightly

* 20190916 - increase READY_TIMEOUT to 10 secs

* 20190916 - typo in example and move waitForConnect() to static area

* 20190916 - update example comments

* 20190916 - update example comments

* 20190916 - update example comments

* 20190916 - add new example to remove paired devices from ESP32

* 20190916 - correct typo in example

* 20190916 - update example comment, add remove_bond_device() method for convenience.

* 20190916 - reword example comment.

* 20190916 - rename remove_bond_device()

* 20190916 - rename removePairedDevice() to unpairDevice()

* 20190916 - code review changes

* 20190916 - fix return value in setup() od example
This commit is contained in:
IonicEV 2019-10-01 10:34:46 -04:00 committed by Me No Dev
parent b334b2c2f9
commit 38c4c06108
4 changed files with 503 additions and 8 deletions
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56
libraries/BluetoothSerial/examples/SerialToSerialBTM/SerialToSerialBTM.ino Normal file
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@ -0,0 +1,56 @@
//This example code is in the Public Domain (or CC0 licensed, at your option.)
//By Victor Tchistiak - 2019
//
//This example demostrates master mode bluetooth connection and pin
//it creates a bridge between Serial and Classical Bluetooth (SPP)
//this is an extention of the SerialToSerialBT example by Evandro Copercini - 2018
//
#include "BluetoothSerial.h"
BluetoothSerial SerialBT;
String MACadd = "AA:BB:CC:11:22:33";
uint8_t address[6] = {0xAA, 0xBB, 0xCC, 0x11, 0x22, 0x33};
//uint8_t address[6] = {0x00, 0x1D, 0xA5, 0x02, 0xC3, 0x22};
String name = "OBDII";
char *pin = "1234"; //<- standard pin would be provided by default
bool connected;
void setup() {
Serial.begin(115200);
//SerialBT.setPin(pin);
SerialBT.begin("ESP32test", true);
//SerialBT.setPin(pin);
Serial.println("The device started in master mode, make sure remote BT device is on!");
// connect(address) is fast (upto 10 secs max), connect(name) is slow (upto 30 secs max) as it needs
// to resolve name to address first, but it allows to connect to different devices with the same name.
// Set CoreDebugLevel to Info to view devices bluetooth address and device names
connected = SerialBT.connect(name);
//connected = SerialBT.connect(address);
if(connected) {
Serial.println("Connected Succesfully!");
} else {
while(!SerialBT.connected(10000)) {
Serial.println("Failed to connect. Make sure remote device is available and in range, then restart app.");
}
}
// disconnect() may take upto 10 secs max
if (SerialBT.disconnect()) {
Serial.println("Disconnected Succesfully!");
}
// this would reconnect to the name(will use address, if resolved) or address used with connect(name/address).
SerialBT.connect();
}
void loop() {
if (Serial.available()) {
SerialBT.write(Serial.read());
}
if (SerialBT.available()) {
Serial.write(SerialBT.read());
}
delay(20);
}

87
libraries/BluetoothSerial/examples/bt_remove_paired_devices/bt_remove_paired_devices.ino Executable file
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@ -0,0 +1,87 @@
//This example code is in the Public Domain (or CC0 licensed, at your option.)
//By Victor Tchistiak - 2019
//
//This example demonstrates reading and removing paired devices stored on the ESP32 flash memory
//Sometimes you may find your ESP32 device could not connect to the remote device despite
//many successful connections earlier. This is most likely a result of client replacing your paired
//device info with new one from other device. The BT clients store connection info for paired devices,
//but it is limited to a few devices only. When new device pairs and number of stored devices is exceeded,
//one of the previously paired devices would be replaced with new one.
//The only remedy is to delete this saved bound device from your device flash memory
//and pair with the other device again.
//
#include "esp_bt_main.h"
#include "esp_bt_device.h"
#include"esp_gap_bt_api.h"
#include "esp_err.h"
#define REMOVE_BONDED_DEVICES 0 // <- Set to 0 to view all bonded devices addresses, set to 1 to remove
#define PAIR_MAX_DEVICES 20
uint8_t pairedDeviceBtAddr[PAIR_MAX_DEVICES][6];
char bda_str[18];
bool initBluetooth()
{
if(!btStart()) {
Serial.println("Failed to initialize controller");
return false;
}
if(esp_bluedroid_init() != ESP_OK) {
Serial.println("Failed to initialize bluedroid");
return false;
}
if(esp_bluedroid_enable() != ESP_OK) {
Serial.println("Failed to enable bluedroid");
return false;
}
return true;
}
char *bda2str(const uint8_t* bda, char *str, size_t size)
{
if (bda == NULL || str == NULL || size < 18) {
return NULL;
}
sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
bda[0], bda[1], bda[2], bda[3], bda[4], bda[5]);
return str;
}
void setup() {
Serial.begin(115200);
initBluetooth();
Serial.print("ESP32 bluetooth address: "); Serial.println(bda2str(esp_bt_dev_get_address(), bda_str, 18));
// Get the numbers of bonded/paired devices in the BT module
int count = esp_bt_gap_get_bond_device_num();
if(!count) {
Serial.println("No bonded device found.");
} else {
Serial.print("Bonded device count: "); Serial.println(count);
if(PAIR_MAX_DEVICES < count) {
count = PAIR_MAX_DEVICES;
Serial.print("Reset bonded device count: "); Serial.println(count);
}
esp_err_t tError = esp_bt_gap_get_bond_device_list(&count, pairedDeviceBtAddr);
if(ESP_OK == tError) {
for(int i = 0; i < count; i++) {
Serial.print("Found bonded device # "); Serial.print(i); Serial.print(" -> ");
Serial.println(bda2str(pairedDeviceBtAddr[i], bda_str, 18));
if(REMOVE_BONDED_DEVICES) {
esp_err_t tError = esp_bt_gap_remove_bond_device(pairedDeviceBtAddr[i]);
if(ESP_OK == tError) {
Serial.print("Removed bonded device # ");
} else {
Serial.print("Failed to remove bonded device # ");
}
Serial.println(i);
}
}
}
}
}
void loop() {}

354
libraries/BluetoothSerial/src/BluetoothSerial.cpp Normal file → Executable file
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@ -53,15 +53,80 @@ static EventGroupHandle_t _spp_event_group = NULL;
static boolean secondConnectionAttempt;
static esp_spp_cb_t * custom_spp_callback = NULL;
#define INQ_LEN 0x10
#define INQ_NUM_RSPS 20
#define READY_TIMEOUT (10 * 1000)
#define SCAN_TIMEOUT (INQ_LEN * 2 * 1000)
static esp_bd_addr_t _peer_bd_addr;
static char _remote_name[ESP_BT_GAP_MAX_BDNAME_LEN + 1];
static bool _isRemoteAddressSet;
static bool _isMaster;
static esp_bt_pin_code_t _pin_code;
static int _pin_len;
static bool _isPinSet;
static bool _enableSSP;
#define SPP_RUNNING 0x01
#define SPP_CONNECTED 0x02
#define SPP_CONGESTED 0x04
#define SPP_DISCONNECTED 0x08
typedef struct {
size_t len;
uint8_t data[];
} spp_packet_t;
static char *bda2str(esp_bd_addr_t bda, char *str, size_t size)
{
if (bda == NULL || str == NULL || size < 18) {
return NULL;
}
uint8_t *p = bda;
sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
p[0], p[1], p[2], p[3], p[4], p[5]);
return str;
}
static bool get_name_from_eir(uint8_t *eir, char *bdname, uint8_t *bdname_len)
{
if (!eir || !bdname || !bdname_len) {
return false;
}
uint8_t *rmt_bdname, rmt_bdname_len;
*bdname = *bdname_len = rmt_bdname_len = 0;
rmt_bdname = esp_bt_gap_resolve_eir_data(eir, ESP_BT_EIR_TYPE_CMPL_LOCAL_NAME, &rmt_bdname_len);
if (!rmt_bdname) {
rmt_bdname = esp_bt_gap_resolve_eir_data(eir, ESP_BT_EIR_TYPE_SHORT_LOCAL_NAME, &rmt_bdname_len);
}
if (rmt_bdname) {
rmt_bdname_len = rmt_bdname_len > ESP_BT_GAP_MAX_BDNAME_LEN ? ESP_BT_GAP_MAX_BDNAME_LEN : rmt_bdname_len;
memcpy(bdname, rmt_bdname, rmt_bdname_len);
bdname[rmt_bdname_len] = 0;
*bdname_len = rmt_bdname_len;
return true;
}
return false;
}
static bool btSetPin() {
esp_bt_pin_type_t pin_type;
if (_isPinSet) {
if (_pin_len) {
log_i("pin set");
pin_type = ESP_BT_PIN_TYPE_FIXED;
} else {
_isPinSet = false;
log_i("pin reset");
pin_type = ESP_BT_PIN_TYPE_VARIABLE; // pin_code would be ignored (default)
}
return (esp_bt_gap_set_pin(pin_type, _pin_len, _pin_code) == ESP_OK);
}
return false;
}
static esp_err_t _spp_queue_packet(uint8_t *data, size_t len){
if(!data || !len){
log_w("No data provided");
@ -159,29 +224,34 @@ static void esp_spp_cb(esp_spp_cb_event_t event, esp_spp_cb_param_t *param)
case ESP_SPP_INIT_EVT:
log_i("ESP_SPP_INIT_EVT");
esp_bt_gap_set_scan_mode(ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
esp_spp_start_srv(ESP_SPP_SEC_NONE, ESP_SPP_ROLE_SLAVE, 0, _spp_server_name);
if (!_isMaster) {
log_i("ESP_SPP_INIT_EVT: slave: start");
esp_spp_start_srv(ESP_SPP_SEC_NONE, ESP_SPP_ROLE_SLAVE, 0, _spp_server_name);
}
xEventGroupSetBits(_spp_event_group, SPP_RUNNING);
break;
case ESP_SPP_SRV_OPEN_EVT://Server connection open
log_i("ESP_SPP_SRV_OPEN_EVT");
if (!_spp_client){
_spp_client = param->open.handle;
} else {
secondConnectionAttempt = true;
esp_spp_disconnect(param->open.handle);
}
xEventGroupClearBits(_spp_event_group, SPP_DISCONNECTED);
xEventGroupSetBits(_spp_event_group, SPP_CONNECTED);
log_i("ESP_SPP_SRV_OPEN_EVT");
break;
case ESP_SPP_CLOSE_EVT://Client connection closed
log_i("ESP_SPP_CLOSE_EVT");
if(secondConnectionAttempt) {
secondConnectionAttempt = false;
} else {
_spp_client = 0;
xEventGroupSetBits(_spp_event_group, SPP_DISCONNECTED);
}
xEventGroupClearBits(_spp_event_group, SPP_CONNECTED);
log_i("ESP_SPP_CLOSE_EVT");
break;
case ESP_SPP_CONG_EVT://connection congestion status changed
@ -216,25 +286,149 @@ static void esp_spp_cb(esp_spp_cb_event_t event, esp_spp_cb_param_t *param)
}
break;
//should maybe delete those.
case ESP_SPP_DISCOVERY_COMP_EVT://discovery complete
log_i("ESP_SPP_DISCOVERY_COMP_EVT");
if (param->disc_comp.status == ESP_SPP_SUCCESS) {
log_i("ESP_SPP_DISCOVERY_COMP_EVT: spp connect to remote");
esp_spp_connect(ESP_SPP_SEC_AUTHENTICATE, ESP_SPP_ROLE_MASTER, param->disc_comp.scn[0], _peer_bd_addr);
}
break;
case ESP_SPP_OPEN_EVT://Client connection open
log_i("ESP_SPP_OPEN_EVT");
if (!_spp_client){
_spp_client = param->open.handle;
} else {
secondConnectionAttempt = true;
esp_spp_disconnect(param->open.handle);
}
xEventGroupClearBits(_spp_event_group, SPP_DISCONNECTED);
xEventGroupSetBits(_spp_event_group, SPP_CONNECTED);
break;
case ESP_SPP_START_EVT://server started
log_i("ESP_SPP_START_EVT");
break;
case ESP_SPP_CL_INIT_EVT://client initiated a connection
log_i("ESP_SPP_CL_INIT_EVT");
break;
default:
break;
}
if(custom_spp_callback)(*custom_spp_callback)(event, param);
}
static void esp_bt_gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param)
{
switch(event){
case ESP_BT_GAP_DISC_RES_EVT:
log_i("ESP_BT_GAP_DISC_RES_EVT");
char bda_str[18];
log_i("Scanned device: %s", bda2str(param->disc_res.bda, bda_str, 18));
for (int i = 0; i < param->disc_res.num_prop; i++) {
uint8_t peer_bdname_len;
char peer_bdname[ESP_BT_GAP_MAX_BDNAME_LEN + 1];
switch(param->disc_res.prop[i].type) {
case ESP_BT_GAP_DEV_PROP_EIR:
if (get_name_from_eir((uint8_t*)param->disc_res.prop[i].val, peer_bdname, &peer_bdname_len)) {
log_i("ESP_BT_GAP_DISC_RES_EVT : EIR : %s : %d", peer_bdname, peer_bdname_len);
if (strlen(_remote_name) == peer_bdname_len
&& strncmp(peer_bdname, _remote_name, peer_bdname_len) == 0) {
log_v("ESP_BT_GAP_DISC_RES_EVT : SPP_START_DISCOVERY_EIR : %s", peer_bdname, peer_bdname_len);
_isRemoteAddressSet = true;
memcpy(_peer_bd_addr, param->disc_res.bda, ESP_BD_ADDR_LEN);
esp_bt_gap_cancel_discovery();
esp_spp_start_discovery(_peer_bd_addr);
}
}
break;
case ESP_BT_GAP_DEV_PROP_BDNAME:
peer_bdname_len = param->disc_res.prop[i].len;
memcpy(peer_bdname, param->disc_res.prop[i].val, peer_bdname_len);
peer_bdname_len--; // len includes 0 terminator
log_v("ESP_BT_GAP_DISC_RES_EVT : BDNAME : %s : %d", peer_bdname, peer_bdname_len);
if (strlen(_remote_name) == peer_bdname_len
&& strncmp(peer_bdname, _remote_name, peer_bdname_len) == 0) {
log_i("ESP_BT_GAP_DISC_RES_EVT : SPP_START_DISCOVERY_BDNAME : %s", peer_bdname);
_isRemoteAddressSet = true;
memcpy(_peer_bd_addr, param->disc_res.bda, ESP_BD_ADDR_LEN);
esp_bt_gap_cancel_discovery();
esp_spp_start_discovery(_peer_bd_addr);
}
break;
case ESP_BT_GAP_DEV_PROP_COD:
//log_i("ESP_BT_GAP_DEV_PROP_COD");
break;
case ESP_BT_GAP_DEV_PROP_RSSI:
//log_i("ESP_BT_GAP_DEV_PROP_RSSI");
break;
default:
break;
}
if (_isRemoteAddressSet)
break;
}
break;
case ESP_BT_GAP_DISC_STATE_CHANGED_EVT:
log_i("ESP_BT_GAP_DISC_STATE_CHANGED_EVT");
break;
case ESP_BT_GAP_RMT_SRVCS_EVT:
log_i( "ESP_BT_GAP_RMT_SRVCS_EVT");
break;
case ESP_BT_GAP_RMT_SRVC_REC_EVT:
log_i("ESP_BT_GAP_RMT_SRVC_REC_EVT");
break;
case ESP_BT_GAP_AUTH_CMPL_EVT:
if (param->auth_cmpl.stat == ESP_BT_STATUS_SUCCESS) {
log_v("authentication success: %s", param->auth_cmpl.device_name);
} else {
log_e("authentication failed, status:%d", param->auth_cmpl.stat);
}
break;
case ESP_BT_GAP_PIN_REQ_EVT:
// default pairing pins
log_i("ESP_BT_GAP_PIN_REQ_EVT min_16_digit:%d", param->pin_req.min_16_digit);
if (param->pin_req.min_16_digit) {
log_i("Input pin code: 0000 0000 0000 0000");
esp_bt_pin_code_t pin_code;
memset(pin_code, '0', ESP_BT_PIN_CODE_LEN);
esp_bt_gap_pin_reply(param->pin_req.bda, true, 16, pin_code);
} else {
log_i("Input pin code: 1234");
esp_bt_pin_code_t pin_code;
memcpy(pin_code, "1234", 4);
esp_bt_gap_pin_reply(param->pin_req.bda, true, 4, pin_code);
}
break;
case ESP_BT_GAP_CFM_REQ_EVT:
log_i("ESP_BT_GAP_CFM_REQ_EVT Please compare the numeric value: %d", param->cfm_req.num_val);
esp_bt_gap_ssp_confirm_reply(param->cfm_req.bda, true);
break;
case ESP_BT_GAP_KEY_NOTIF_EVT:
log_i("ESP_BT_GAP_KEY_NOTIF_EVT passkey:%d", param->key_notif.passkey);
break;
case ESP_BT_GAP_KEY_REQ_EVT:
log_i("ESP_BT_GAP_KEY_REQ_EVT Please enter passkey!");
break;
default:
break;
}
}
static bool _init_bt(const char *deviceName)
{
if(!_spp_event_group){
@ -245,6 +439,7 @@ static bool _init_bt(const char *deviceName)
}
xEventGroupClearBits(_spp_event_group, 0xFFFFFF);
xEventGroupSetBits(_spp_event_group, SPP_CONGESTED);
xEventGroupSetBits(_spp_event_group, SPP_DISCONNECTED);
}
if (_spp_rx_queue == NULL){
_spp_rx_queue = xQueueCreate(RX_QUEUE_SIZE, sizeof(uint8_t)); //initialize the queue
@ -297,6 +492,11 @@ static bool _init_bt(const char *deviceName)
}
}
if (_isMaster && esp_bt_gap_register_callback(esp_bt_gap_cb) != ESP_OK) {
log_e("gap register failed");
return false;
}
if (esp_spp_register_callback(esp_spp_cb) != ESP_OK){
log_e("spp register failed");
return false;
@ -307,8 +507,20 @@ static bool _init_bt(const char *deviceName)
return false;
}
log_i("device name set");
esp_bt_dev_set_device_name(deviceName);
if (_isPinSet) {
btSetPin();
}
if (_enableSSP) {
log_i("Simple Secure Pairing");
esp_bt_sp_param_t param_type = ESP_BT_SP_IOCAP_MODE;
esp_bt_io_cap_t iocap = ESP_BT_IO_CAP_IO;
esp_bt_gap_set_security_param(param_type, &iocap, sizeof(uint8_t));
}
// the default BTA_DM_COD_LOUDSPEAKER does not work with the macOS BT stack
esp_bt_cod_t cod;
cod.major = 0b00001;
@ -318,7 +530,6 @@ static bool _init_bt(const char *deviceName)
log_e("set cod failed");
return false;
}
return true;
}
@ -361,6 +572,11 @@ static bool _stop_bt()
return true;
}
static bool waitForConnect(int timeout) {
TickType_t xTicksToWait = timeout / portTICK_PERIOD_MS;
return (xEventGroupWaitBits(_spp_event_group, SPP_CONNECTED, pdFALSE, pdTRUE, xTicksToWait) != 0);
}
/*
* Serial Bluetooth Arduino
*
@ -376,8 +592,9 @@ BluetoothSerial::~BluetoothSerial(void)
_stop_bt();
}
bool BluetoothSerial::begin(String localName)
bool BluetoothSerial::begin(String localName, bool isMaster)
{
_isMaster = isMaster;
if (localName.length()){
local_name = localName;
}
@ -445,4 +662,129 @@ esp_err_t BluetoothSerial::register_callback(esp_spp_cb_t * callback)
return ESP_OK;
}
//Simple Secure Pairing
void BluetoothSerial::enableSSP() {
_enableSSP = true;
}
/*
* Set default parameters for Legacy Pairing
* Use fixed pin code
*/
bool BluetoothSerial::setPin(const char *pin) {
bool isEmpty = !(pin && *pin);
if (isEmpty && !_isPinSet) {
return true; // nothing to do
} else if (!isEmpty){
_pin_len = strlen(pin);
memcpy(_pin_code, pin, _pin_len);
} else {
_pin_len = 0; // resetting pin to none (default)
}
_pin_code[_pin_len] = 0;
_isPinSet = true;
if (isReady(false, READY_TIMEOUT)) {
btSetPin();
}
return true;
}
bool BluetoothSerial::connect(String remoteName)
{
if (!isReady(true, READY_TIMEOUT)) return false;
if (remoteName && remoteName.length() < 1) {
log_e("No remote name is provided");
return false;
}
disconnect();
_isRemoteAddressSet = false;
strncpy(_remote_name, remoteName.c_str(), ESP_BT_GAP_MAX_BDNAME_LEN);
_remote_name[ESP_BT_GAP_MAX_BDNAME_LEN] = 0;
log_i("master : remoteName");
// will first resolve name to address
esp_bt_gap_set_scan_mode(ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
if (esp_bt_gap_start_discovery(ESP_BT_INQ_MODE_GENERAL_INQUIRY, INQ_LEN, INQ_NUM_RSPS) == ESP_OK) {
return waitForConnect(SCAN_TIMEOUT);
}
return false;
}
bool BluetoothSerial::connect(uint8_t remoteAddress[])
{
if (!isReady(true, READY_TIMEOUT)) return false;
if (!remoteAddress) {
log_e("No remote address is provided");
return false;
}
disconnect();
_remote_name[0] = 0;
_isRemoteAddressSet = true;
memcpy(_peer_bd_addr, remoteAddress, ESP_BD_ADDR_LEN);
log_i("master : remoteAddress");
if (esp_spp_start_discovery(_peer_bd_addr) == ESP_OK) {
return waitForConnect(READY_TIMEOUT);
}
return false;
}
bool BluetoothSerial::connect()
{
if (!isReady(true, READY_TIMEOUT)) return false;
if (_isRemoteAddressSet){
disconnect();
// use resolved or set address first
log_i("master : remoteAddress");
if (esp_spp_start_discovery(_peer_bd_addr) == ESP_OK) {
return waitForConnect(READY_TIMEOUT);
}
return false;
} else if (_remote_name[0]) {
disconnect();
log_i("master : remoteName");
// will resolve name to address first - it may take a while
esp_bt_gap_set_scan_mode(ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
if (esp_bt_gap_start_discovery(ESP_BT_INQ_MODE_GENERAL_INQUIRY, INQ_LEN, INQ_NUM_RSPS) == ESP_OK) {
return waitForConnect(SCAN_TIMEOUT);
}
return false;
}
log_e("Neither Remote name nor address was provided");
return false;
}
bool BluetoothSerial::disconnect() {
if (_spp_client) {
flush();
log_i("disconnecting");
if (esp_spp_disconnect(_spp_client) == ESP_OK) {
TickType_t xTicksToWait = READY_TIMEOUT / portTICK_PERIOD_MS;
return (xEventGroupWaitBits(_spp_event_group, SPP_DISCONNECTED, pdFALSE, pdTRUE, xTicksToWait) != 0);
}
}
return false;
}
bool BluetoothSerial::unpairDevice(uint8_t remoteAddress[]) {
if (isReady(false, READY_TIMEOUT)) {
log_i("removing bonded device");
return (esp_bt_gap_remove_bond_device(remoteAddress) == ESP_OK);
}
return false;
}
bool BluetoothSerial::connected(int timeout) {
return waitForConnect(timeout);
}
bool BluetoothSerial::isReady(bool checkMaster, int timeout) {
if (checkMaster && !_isMaster) {
log_e("Master mode is not active. Call begin(localName, true) to enable Master mode");
return false;
}
if (!btStarted()) {
log_e("BT is not initialized. Call begin() first");
return false;
}
TickType_t xTicksToWait = timeout / portTICK_PERIOD_MS;
return (xEventGroupWaitBits(_spp_event_group, SPP_RUNNING, pdFALSE, pdTRUE, xTicksToWait) != 0);
}
#endif

12
libraries/BluetoothSerial/src/BluetoothSerial.h Normal file → Executable file
View File

@ -30,7 +30,7 @@ class BluetoothSerial: public Stream
BluetoothSerial(void);
~BluetoothSerial(void);
bool begin(String localName=String());
bool begin(String localName=String(), bool isMaster=false);
int available(void);
int peek(void);
bool hasClient(void);
@ -41,6 +41,16 @@ class BluetoothSerial: public Stream
void end(void);
esp_err_t register_callback(esp_spp_cb_t * callback);
void enableSSP();
bool setPin(const char *pin);
bool connect(String remoteName);
bool connect(uint8_t remoteAddress[]);
bool connect();
bool connected(int timeout=0);
bool isReady(bool checkMaster=false, int timeout=0);
bool disconnect();
bool unpairDevice(uint8_t remoteAddress[]);
private:
String local_name;