write_value to NRF52 on Ubuntu 18.04 takes at least 75 ms.

[wiesener]

I've measured the duration of sending one packet of 8 bytes to the peripheral with the code below:

auto tick = boost::posix_time::microsec_clock::local_time();
this->nus_char_tx->write_value(buffer);
auto now = boost::posix_time::microsec_clock::local_time();
boost::posix_time::time_duration diff = now - tick;
auto mili = diff.total_milliseconds();
std::cout << "Time elpased: " << mili << std::endl;

It gives me around 70-90 ms. My peripheral set the connection interval between 7.5-75 ms. So how could it be that long for sending just some data.

Best regards,

[wiesener]

I've just checked:
write_value calls: gatt_characteristic1_call_write_value_sync
Which seems to be generated code?
Is there a way to call it asynchronously? And is there a way to reduce the connection interval from dbus?

[wiesener]

I've just checked:
write_value calls: gatt_characteristic1_call_write_value_sync
Which seems to be generated code?
Is there a way to call it asynchronously? And is there a way to reduce the connection interval from dbus?