Is it possible to set hopIncrement for nrf52832

[saintnever]

Hi,

I'm wondering if it's possible to set hopIncrement (Core4.2 Vol6 PartB 4.5.8.2) to a specific value (not random), like 5, in current SoftDeivce. Also, if that's possible, can I set it to a value less than 5 despite the Core4.2 requirement?

thanks SN

[FormerMember]

It is not possible to set the hop increment. The purpose of channel hopping is to have significant jumps when hopping, in order to avoid interference problems. If there is a channel with a lot of interference and the channel hop is very small, there can still be interference problem on neighboring channels, which will result in more packet loss.

[saintnever]

Thanks for the answer! I'm trying to get RSSIs during a connection on all 37 channels for spectrum analysis. Is there any way that I can do that?

[FormerMember]

When using the softdevice, the application can get the current RSSI, however, I'm not sure if it is possible to get the current channel..

If you want to make a PC tool, it can be useful to take a look at this "example".

[saintnever]

I'm working on this again and tried the PC tool. It seems it works like a spectrum analyzer. However, what I want to do is to record the RSSI and channel number for each data packet during a connection. Can I do it with the PC tool firmware? Also, the channel number can be calculated with the hopIncrement and Channel Map in Connect Request Packet. I know sd_ble_opt_set can be used to set channel map. But is there a way to know hopIncrement for the current connection?

[run_ar]

You need to capture the connection request and all channel map updates if you are trying to follow a link between two other devices to capture the RSSI. The hop increment is part of the connection request packet.