And from the original BLE_client i get this:
07:13:54.074 -> BLE Advertised Device found: Name: , Address: 30:32:90:2e:39:c8
07:13:54.074 -> BATT Device found: Name: , Address: 30:32:90:2e:39:c8
07:13:54.144 -> new BLEAdvertisedDevice
07:13:54.144 -> new BLEAdvertisedDevice done
07:13:54.144 -> Forming a connection to 30:32:90:2e:39:c8
07:13:54.144 -> - Created client
07:13:54.179 -> BLE Advertised Device found: Name: , Address: 2f:fb:ad:af:cb:79
07:13:54.247 -> BLE Advertised Device found: Name: , Address: fc:f9:35:d8:ea:44, serviceUUID: , serviceUUID:
07:13:56.452 -> - Connected to server
07:13:59.696 -> ScanCallback: GAP_MSG_LE_CONN_UPDATE_IND: conn_id 0, conn_interval_max 0x18, conn_interval_min 0x6, conn_latency 0x0,supervision_timeout 0x190
07:13:59.696 ->
cba20d00-224d-11e6-9fb8-0002a5d5c51b
07:14:11.509 -> Failed to find our service UUID: cba20d00-224d-11e6-9fb8-0002a5d5c51b
07:14:11.544 -> We have failed to connect to the server; there is nothin more we will do.
07:14:11.544 -> …
From the examples Seeed Adruino BLE BLE_client
/**
A BLE client example that is rich in capabilities.
There is a lot new capabilities implemented.
author unknown
updated by chegewara
*/
#include "BLEDevice.h"
#include "Seeed_erpcUnified.h"
#include <BLEScan.h>
#include <BLEAdvertisedDevice.h>
// The remote service we wish to connect to.
static BLEUUID serviceUUID("CBA20D00-224D-11E6-9FB8-0002A5D5C51B");
// The characteristic of the remote service we are interested in.
static BLEUUID charUUID("CBA20002-224D-11E6-9FB8-0002A5D5C51B");
static boolean doConnect = true;
static boolean connected = true;
static boolean doScan = true;
static BLERemoteCharacteristic* pRemoteCharacteristic;
static BLEAdvertisedDevice* myDevice;
uint8_t bd_addr[6] = {0x30, 0x32, 0x90, 0x2e, 0x39, 0xc8}; //reversed
//uint8_t bd_addr[6] = {0xc8, 0x39, 0x2e, 0x90, 0x32, 0x30};
BLEAddress BattServer(bd_addr);
static uint8_t cmdPress[3] = {0x57, 0x01, 0x00};
static void notifyCallback(
BLERemoteCharacteristic* pBLERemoteCharacteristic,
uint8_t* pData,
size_t length,
bool isNotify) {
Serial.print("Notify callback for characteristic ");
Serial.print(pBLERemoteCharacteristic->getUUID().toString().c_str());
Serial.print(" of data length ");
Serial.println(length);
Serial.print("data: ");
Serial.print(*(uint8_t *)pData);
}
class MyClientCallback : public BLEClientCallbacks {
void onConnect(BLEClient* pclient) {
}
void onDisconnect(BLEClient* pclient) {
connected = false;
Serial.println("onDisconnect");
}
};
bool connectToServer() {
Serial.print("Forming a connection to ");
Serial.println(myDevice->getAddress().toString().c_str());
BLEClient* pClient = BLEDevice::createClient();
Serial.println(" - Created client");
pClient->setClientCallbacks(new MyClientCallback());
// Connect to the remove BLE Server.
pClient->connect(myDevice); // if you pass BLEAdvertisedDevice instead of address, it will be recognized type of peer device address (public or private)
Serial.println(" - Connected to server");
// Obtain a reference to the service we are after in the remote BLE server.
BLERemoteService* pRemoteService = pClient->getService(serviceUUID);
Serial.println(serviceUUID.toString().c_str());
if (pRemoteService == nullptr) {
Serial.print("Failed to find our service UUID: ");
Serial.println(serviceUUID.toString().c_str());
pClient->disconnect();
return false;
}
Serial.println(" - Found our service");
// Obtain a reference to the characteristic in the service of the remote BLE server.
pRemoteCharacteristic = pRemoteService->getCharacteristic(charUUID);
if (pRemoteCharacteristic == nullptr) {
Serial.print("Failed to find our characteristic UUID: ");
Serial.println(charUUID.toString().c_str());
pClient->disconnect();
return false;
}
Serial.println(" - Found our characteristic");
// Read the value of the characteristic.
if (pRemoteCharacteristic->canRead()) {
Serial.println(" - can read start");
std::string value = pRemoteCharacteristic->readValue();
Serial.print("The characteristic value was: ");
Serial.println(value.c_str());
}
if (pRemoteCharacteristic->canNotify())
// cmd to send ------->>>>>>>>> pRemoteCharacteristic->writeValue(cmdPress, sizeof(cmdPress), false);
pRemoteCharacteristic->registerForNotify(notifyCallback);
connected = true;
return true;
}
/**
Scan for BLE servers and find the first one that advertises the service we are looking for.
*/
class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
/**
Called for each advertising BLE server.
*/
void onResult(BLEAdvertisedDevice advertisedDevice) {
Serial.print("BLE Advertised Device found: ");
Serial.println(advertisedDevice.toString().c_str());
// We have found a device, let us now see if it contains the service we are looking for.
if (memcmp(advertisedDevice.getAddress().getNative(), BattServer.getNative(), 6) == 0) {
Serial.print("BATT Device found: ");
Serial.println(advertisedDevice.toString().c_str());
BLEDevice::getScan()->stop();
Serial.println("new BLEAdvertisedDevice");
myDevice = new BLEAdvertisedDevice(advertisedDevice);
Serial.println("new BLEAdvertisedDevice done");
doConnect = true;
doScan = true;
} // onResult
}
}; // MyAdvertisedDeviceCallbacks
void setup() {
Serial.begin(115200);
while (!Serial) {};
delay(2000);
Serial.println("Starting Arduino BLE Client application...");
BLEDevice::init("");
// Retrieve a Scanner and set the callback we want to use to be informed when we
// have detected a new device. Specify that we want active scanning and start the
// scan to run for 5 seconds.
BLEScan* pBLEScan = BLEDevice::getScan();
pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
pBLEScan->setInterval(1349);
pBLEScan->setWindow(449);
pBLEScan->setActiveScan(true);
pBLEScan->start(5, false);
} // End of setup.
// This is the Arduino main loop function.
void loop() {
// If the flag "doConnect" is true then we have scanned for and found the desired
// BLE Server with which we wish to connect. Now we connect to it. Once we are
// connected we set the connected flag to be true.
if (doConnect == true) {
if (connectToServer()) {
Serial.println("We are now connected to the BLE Server.");
} else {
Serial.println("We have failed to connect to the server; there is nothin more we will do.");
}
doConnect = false;
}
Serial.printf(".");
delay(1000);
} // End of loop