nrf52840 , android disconnect after 28 seconds of connection

RE: nrf52840 , android disconnect after 28 seconds of connection

Judge — Thu, 16 Aug 2018 13:29:40 GMT

hi Martin Lesund,

Yes, I did. The problem solved.

Thank you!

RE: nrf52840 , android disconnect after 28 seconds of connection

Martin Lesund — Mon, 06 Aug 2018 13:10:15 GMT

Hi Judge,

So if I understand you correctly you have solved the issue?

but you are wondering why it now works?

I do not know what your code looked like before, but the way you are handling the BLE_GAP_EVT_PHY_UPDATE_REQUEST case is the same as it is done in "ble_app_uart" example. Which is to automatically choose the PHYs the peer prefers to use.

RE: nrf52840 , android disconnect after 28 seconds of connection

Judge — Thu, 26 Jul 2018 01:59:46 GMT

My phone's android is 8.1.0, support bluetooth 5.

The SDK I'm using now is 15.0. Softdevice is s140_nrf52_6.0.0_softdevice.

I used the Smart Remote 3 program(SR3 version 1.2) to migrate to 52840.

Nothing logger.Maybe I didn't open more debug information.

I have followed the instructions in the migration manual.

I have solved the problem. Add the following code in the sofedevice BLE event:

case BLE_GAP_EVT_PHY_UPDATE_REQUEST:

{

NRF_LOG_DEBUG("PHY update request.");

ble_gap_phys_t const phys =

{

.rx_phys = BLE_GAP_PHY_AUTO,

.tx_phys = BLE_GAP_PHY_AUTO,

};

err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);

APP_ERROR_CHECK(err_code);

} break;

I don't know why ?

RE: nrf52840 , android disconnect after 28 seconds of connection

Martin Lesund — Wed, 25 Jul 2018 12:56:21 GMT

Hi Judge,

With what exactly phone are you experiencing this with?

What Softdevice version are you running on your device?

Is this a custom firmware made from scratch or is it based on a particular example in the SDK?

Do you get any logging information out of the peripheral?

(Have you followed the Softdevice migration guide?)