It is a question about an err_code 'NRF_ERROR_DATA_SIZE'

RE: It is a question about an err_code 'NRF_ERROR_DATA_SIZE'

Hung Bui — Tue, 06 Jun 2023 08:19:00 GMT

Hi,

It depends on when you establish a new connection. If the last connection is still active you may have handle 0x01 if the connection 0x00 has not been fully terminated.

RE: It is a question about an err_code 'NRF_ERROR_DATA_SIZE'

Noxstella — Tue, 06 Jun 2023 07:52:44 GMT

Hey Hung, Sorry for late reply

Every time a device is conneted ,I use RTT_LOG to show the handle of it .But when I try to connect a peripheral device ,the log shows two different handls '0x00' and '0x01'. It seems that this problem may lead to a 'NRF_ERROR_CONN_COUNT' error you mentioned.

RE: It is a question about an err_code 'NRF_ERROR_DATA_SIZE'

Hung Bui — Mon, 05 Jun 2023 11:23:14 GMT

Hi Jin,

Are you sure it's NRF_ERROR_DATA_SIZE ( error 12) because this error code is not in the list of return codes for sd_ble_gap_connect().
Could that be error 0x12 instead of decimal 12 ? If it's 0x12 then it's NRF_ERROR_CONN_COUNT which mean you exceed the maximum number of concurrent connections.

Please make sure you have correct configuration of:
NRF_SDH_BLE_PERIPHERAL_LINK_COUNT

NRF_SDH_BLE_CENTRAL_LINK_COUNT

And NRF_SDH_BLE_TOTAL_LINK_COUNT

[quote user=""]By the way,when I tried to connect one peripheral device , I got two different connecting handles.What can cause the problem to occur?[/quote]

Please explain how yo find that you have different handles and which handles you have ?