send packets continuously in ble_app_uart example

[mdido]

I have to send packages continuously; How can I get feedback on the success of transmission before sending the next package? Which event should I use? and in what callback function?

I'm using SDK 15 and softdevice 6.0. The event BLE_EVT_TX_COMPLETE is missing in ble.h

Thanks

[Edvin]

Ok.

The error 13313 = 0x3401 means that the CCCD of the characteristic is not set. That means that the phone has not enabled the notification yet, when you try to send the notification.

 

You can ignore this err_code. That is, don't send it to an APP_ERROR_CHECK(), but be aware that the message is not sent. Try to send it again. Once you call it after the notification is enabled, it should return NRF_SUCCESS.

 

BR,

Edvin

[mdido]

Hello, thank you for the great support.

A last question:

I believed that only in BLE 5.0 I can send more packets in a connection interval. It's true?

This is because I connected the nordic to phones with BLE <5.0 and then it seems that more packets are being sent every connection interval.

[Edvin]

That is not entirely true.

Different devices supports different features in BLE. Some are BLE5 features, while some are not.

 

The only BLE5 specific feature that makes a difference in throughput is 2MBPS. 

Other than that, different phones support different MTU sizes, and some support DLE while others don't. This will affect the number of packets that can be sent every connection interval.

 

BR,

Edvin

[mdido]

Thank you.

For me the ticket is closed.

Best regards