How to change the device address?

[Droidnah]

Hello, I'm new to programming this kind of thing. I'm trying to implement different Bluetooth features on a single device, and I need the computer to be able to connect to two different devices when selecting different features.

For example, I enable the Bluetooth keyboard code on the ESP32 and connect as a keyboard, then switch to the Bluetooth mouse code and use it as a mouse.

I was able to implement the devices separately, but when I connect to the mouse after the keyboard, it connects as a mouse, but with keyboard functionality, and nothing works (the same thing happens vice versa). The name changes in Windows, the icon changes, but it automatically connects to the previous device with the old settings.

I'd like to know the function responsible for changing the address, if one exists, since I couldn't find one. Thanks in advance!

[h2zero]

You can set the address with these:

NimBLE-Arduino/src/NimBLEDevice.h

Line 130 in 5dad893

static bool setOwnAddr(const NimBLEAddress& addr);

[Droidnah]

Could you please tell me what format the address should be written in?
I tried:

NimBLEDevice().setOwnAddr(0);
NimBLEDevice().setOwnAddr((const uint8_t*)1);

In both cases, the device reboots; it won't compile in other formats.
Error in serial:

ELF file SHA256: 2503f5ed718cd27a

Rebooting...
ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_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:0x3fff0030,len:1344
load:0x40078000,len:13964
load:0x40080400,len:3600
entry 0x400805f0

assert failed: npl_freertos_mutex_pend c:\Users\Watson\Documents\Arduino\libraries\NimBLE-Arduino\src\nimble\porting\npl\freertos\src\npl_os_freertos.c:265 (mu->handle)


Backtrace: 0x40083a21:0x3ffcab80 0x400932e1:0x3ffcaba0 0x40098a95:0x3ffcabc0 0x400edd01:0x3ffcacf0 0x400e5714:0x3ffcad10 0x400e572b:0x3ffcad30 0x400e6b6f:0x3ffcad50 0x400dc415:0x3ffcad70 0x400d2a0b:0x3ffcad90 0x400d2ecf:0x3ffcadc0 0x400f1871:0x3ffcade0

[Droidnah]

Does anyone know how to solve this problem?

[h2zero]

You need to use a proper address: NimBLEDevice::setOwnAddr("11:22:33:44:55:66", 1) for example. I suggest doing some research about BLE addresses.

[Droidnah]

This doesn't work either...
Compilation only succeeds with these parameters:
NimBLEDevice::setOwnAddr((const uint8_t*)"08:26:01:03:08:57");
But the error remains the same.

Where can I find information about BLE addresses?

[h2zero]

The correct format is NimBLEDevice::setOwnAddr(NimBLEAddress("08:26:01:03:08:57", 1));

Here is some reading: https://novelbits.io/bluetooth-address-privacy-ble/