I cut the SB40 bridge, then the Bluetooth throughput of the NRF5340 drops dramatically.

RE: I cut the SB40 bridge, then the Bluetooth throughput of the NRF5340 drops dramatically.

Susheel Nuguru — Thu, 28 Jul 2022 10:05:32 GMT

something seems to have happened to the kit after your test. I do not see any jumper on P22 in your image, I would suggest to do a quick test on other DK just to see if this DK is partially damaged.

RE: I cut the SB40 bridge, then the Bluetooth throughput of the NRF5340 drops dramatically.

Cong Ma — Wed, 27 Jul 2022 13:35:13 GMT

I have recovered it . Then I flash the peripheral_uart sample, it successed. Then I flash the throughput sample, It still does. Here's the board after I cut it up... could something have gone wrong?

I have no idea..

Many thanks

Cong

RE: I cut the SB40 bridge, then the Bluetooth throughput of the NRF5340 drops dramatically.

Susheel Nuguru — Wed, 27 Jul 2022 11:58:15 GMT

> nrfjprog --recover

and then flash some other application than yours to see if it is the same behavior.

RE: I cut the SB40 bridge, then the Bluetooth throughput of the NRF5340 drops dramatically.

Cong Ma — Wed, 27 Jul 2022 11:08:47 GMT

So maybe it's a software issue? But I didn't change the code for SAMPLE. I don't know how I should try 。。。。T.T

RE: I cut the SB40 bridge, then the Bluetooth throughput of the NRF5340 drops dramatically.

Susheel Nuguru — Wed, 27 Jul 2022 11:03:39 GMT

If you have a jumber to P22 then then cutting solder bridge should not affect the throughput as they are then not related. This is to be something else that must have changed.