what is write_wo_resp property of a characteristics?

[balaji]

Hi, I need to know when to use the write_wo_resp property for a characteristics, and what is the difference between write and write_wo_resp property of a characteristics? I have seen some sample codes with characteristics property of both write and write_wo_resp enabled, how it works? And also tell me how to work with auth_signed_wr property? Please help me to get clear idea on characteristics properties.

Regards, Balaji

[Petter Myhre]

Hi Balaji

Please have a look at the Bluetooth Specification Version 4.0, Vol 3, section 4.9 for information regarding this. In short:

Write Without Response(write_wo_resp) - used to write a characteristic value to a server when the client does not need an acknowledgement that the write was successfully performed.

Write(write) - used to write a characteristic value to a server when the client does need an acknowledgement that the write was successfully performed. This is acknowledged by a write response.

Signed Write Without Response(auth_signed_wr) - is currently not supported by our SoftDevice