ESP32 Forum

Posted: **Sun Dec 02, 2018 1:21 am**

Hello, I'm trying to get the client / server examples working. Found it odd the service and char UUID don't match in the example. But that's no big deal right? I changed the client so it matches the server example and also tried changing the client so it matches the server but client will not connect.

It sees the advertised device

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 BLE Advertised Device found: Name: MyESP32, Address: 24:0a:c4:96:70:7a, txPower: -21

But it's never getting to this condition even though I've made the uuids the same.

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 if (advertisedDevice.haveServiceUUID() && advertisedDevice.getServiceUUID().equals(serviceUUID)) {

The only thing I modified in the BLE_client and BLE_server sketchers is the uuid for service and char to match them up

Code: Select all

// Client
// The remote service we wish to connect to.
static BLEUUID serviceUUID("4fafc201-1fb5-459e-8fcc-c5c9c331914b");
// The characteristic of the remote service we are interested in.
static BLEUUID    charUUID("beb5483e-36e1-4688-b7f5-ea07361b26a8");

// Server
#define SERVICE_UUID        "4fafc201-1fb5-459e-8fcc-c5c9c331914b"
#define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"

Thanks

Posted: **Sun Dec 02, 2018 8:11 am**

Hi, ble examples has been updated recently.
Here you have client example with better version searching by service UUID:
https://github.com/nkolban/ESP32_BLE_Ar ... t.ino#L103

And here is line that was missing in old server example but is requires to use client/server togheter:
https://github.com/nkolban/ESP32_BLE_Ar ... er.ino#L34

Posted: **Mon Dec 03, 2018 3:07 am**

Thanks for providing the code. These updated ones work out of the box.

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