Question - Can a device be a BLE SERVER and a BLE CLIENT at same time

[mitchjs]

@h2zero , my existing project working great, then the user asked me if they could add a BLE remote(physical device)
to it, i dont got the remote YET, but im guessing its a server probably even BLE HID. i always see "Client or Server" never both options

thanks
mitch

[h2zero]

Sure you can do that. Works just as you would expect, create a client instance and a server instance and give it a go.

[mitchjs]

ok, when i get this remote deally in my hand, ill scan it and see what services it offers...

thanks!!!

[arif-ozcan]

Is there any example for this operation ? I cannot access to the client services of the central through peripheral.

[michaelboeding]

I'm also trying to get this to work and I'm encountering a crash. My operation is the client starts scanning and then I try to setup the server after. And I immediately get a crash.

`
static inline ble_npl_error_t
ble_npl_mutex_pend(struct ble_npl_mutex *mu, ble_npl_time_t timeout)
{
return npl_freertos_mutex_pend(mu, timeout);
}

rc = ble_npl_mutex_pend(&ble_hs_mutex, 0xffffffff);

ble_hs_lock_nested();

#if defined(CONFIG_BT_NIMBLE_ROLE_PERIPHERAL)
/* STATIC / NimBLEServer NimBLEDevice::createServer() {
if(NimBLEDevice::m_pServer == nullptr) {
NimBLEDevice::m_pServer = new NimBLEServer();
ble_gatts_reset();
ble_svc_gap_init();
ble_svc_gatt_init();
}

return m_pServer;

} // createServer

ble_gatts_reset();

`

That's the backtrace. Seems to fail on the createServer call. Any advice? @h2zero

[michaelboeding]

Update on this - I think I got this working. You need to create the server first before trying to create the client. I was doing it the other way around.