Sending & receiving >20B BLE

[Chocol8]

Hello guys,

My set up is pca10028, s110, sdk 6, tablet with nrf_connect app. I am using modified ble_app_uart example. I was trying to send >20 bytes from nrf_connect app, sniffer only shows "Prepare write request" was sent. My goal is to send and receive >20 B over BLE.

I do understand that I could send data by dividing it into 20 byte size packets but how to receive them while nrf_connect sends "Prepare write request" packet?

I was reading few times many posts in here about possibilities and checking through examples of ble_app_hrs-longwrite. Unfortunately, I do not understand where to begin. I lack of knowledge and would like some to get some guidance on this topic.

I hope I have explained detailed enough. If there is lack of information, please, let me know.

Thank you in advance.

[Hung Bui]

Hi Chocol,

SDK v6 is very old SDK. Which S110 version are you using?

Last SDK that supports nRF51 is SDK v12.3.

If you want to do queued write (write with longer than 20 bytes) you need to handle it in the application. You can have a look at the message sequence chart here.

There is an example here. For older SDK we have an example here.

[Chocol8]

Thank you :)