sd_ble_gatts_hvx returns error 0x3400

RE: sd_ble_gatts_hvx returns error 0x3400

Vidar Berg — Mon, 15 Jul 2019 09:49:47 GMT

I can't think of much else to try if you have access to the usb port, unfortunately. Maybe it's best to wait with the FA if you only have one failing unit. I guess a DFU might fix/mask the problem.

RE: sd_ble_gatts_hvx returns error 0x3400

aurelieb — Fri, 12 Jul 2019 07:55:11 GMT

Unfortunatly, the person that could do it is on away for the next two weeks. I can only access the usb connector or perform a firmware update for the moment. If you have any other solution that I could try, otherwise, I'll wait for my collegue to come back, and reach back to you.

RE: sd_ble_gatts_hvx returns error 0x3400

Vidar Berg — Fri, 12 Jul 2019 07:16:50 GMT

It's possible that it's caused by corrupted flash, but I'm not sure how likely that is. Are you able to dump the flash on this particular device and compare it against the original FW image?

E.g.,

nrfjprog --memrd 0x0 --n <256/512 k bytes depedending on chip variant> > flash_readout.txt

RE: sd_ble_gatts_hvx returns error 0x3400

aurelieb — Thu, 11 Jul 2019 14:10:49 GMT

yes all devices run with the same FW. However we have them running for a while (2-3 years) now and we did a lot of DFU. Would it be possible that this come from a corrupted flash?

RE: sd_ble_gatts_hvx returns error 0x3400

Vidar Berg — Thu, 11 Jul 2019 14:01:32 GMT

Hello,

The error code corresponds to "BLE_ERROR_GATTS_INVALID_ATTR_TYPE: Invalid attribute type(s) supplied, only characteristic values may be notified and indicated.", but not sure why you would only see this on one device. Do all of your devices run with the same FW?