ESP32 Forum

Posted: **Tue Jun 02, 2020 11:02 am**

Hi,
I'm tryng the BLE_Client sketch on Arduino in order to have some information from a bluetooth thermometer.
I need to read a service that I can see with ble_scanner on a smartphone. But if I insert the UUID of the service in the ble_client this tell me that this service is unavalaible.
This device has 2 custom services, if I insert the UUID of the "first" service all is ok. But I need the "second" service.
The service that is recognize is only that I see during scan.
I'm a newbie for Arduino and ESP32.

BR
Marco

Posted: **Tue Jun 02, 2020 11:31 am**

Screenshot from smartphone, logs from app please, code maybe.

Posted: **Tue Jun 02, 2020 11:55 am**

Hi,
code I have used is the ble_client sketch modified by you.
I have changed only the service UUID, and charUUID

Code: Select all

// The remote service we wish to connect to.
//static BLEUUID serviceUUID("0000fff0-0000-1000-8000-00805f9b34fb");
static BLEUUID serviceUUID("0000fee7-0000-1000-8000-00805f9b34fb");
// The characteristic of the remote service we are interested in.
//static BLEUUID    charUUID("0000fff4-0000-1000-8000-00805f9b34fb");
static BLEUUID    charUUID("0000fec9-0000-1000-8000-00805f9b34fb");

the commented row are the one I need to read, the other is the service that is OK.

when the esp32 don't succed in found the service the serial monitor will show:
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1216
ho 0 tail 12 room 4
load:0x40078000,len:9720
ho 0 tail 12 room 4
load:0x40080400,len:6352
entry 0x400806b8
Starting Arduino BLE Client application...
BLE Advertised Device found: Name: Belter_TP, Address: 01:b6:ec:b1:2a:c7, manufacturer data: a00301b6ecb12ac7, serviceUUID: 0000fee7-0000-1000-8000-00805f9b34fb

Belter_TP is name of the device

Many thanks
Marco

Posted: **Tue Jun 02, 2020 5:48 pm**

Ok, everything seems to look good. So, you need to have code to search one service and then second copy of that code to find second service.

Posted: **Wed Jun 03, 2020 4:34 pm**

Many Thanks.
How I can find another service, I just pass my service code to the getservice() function.
I have tried to call another time the getservice() function, but none. There is a jolly address, like *.* in order to automatically have the list of all services ?

BR
Marco

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