Error(-22) on connecting to the peripheral using nrf52840 as central

Question

Hi 
 this is the error when I tried to connect to peripheral and also get the error on scanning after that connection error 
 I am using the sample code for this application https://docs.zephyrproject.org/latest/samples/bluetooth/central_hr/README.html

Amanda Hsieh · Accepted Answer

Hi, 
 Karthik p said: what's the meaning of error -22 and why this error occurs. 
 error -22 means Invalid argument returned by bt_conn_le_create . 
 error -120 for is EALREADY means Socket already connected returned by bt_le_scan_start . 
 Karthik p said: I am just trying to connect using the MAC id 
 You can u se the function bt_scan_filter_add(..) and provide the scan filter type BT_SCAN_FILTER_TYPE_ADDR along with the address. After scanning, you can match the filter (which can be the MAC ID) using the ` scan_filter_match ` function. Take a look at the nrf_desktop application and central_nfc_pairing for guidance on how to implement this. Here is the tutorial for scanning and connecting . 
 -Amanda H.

Error(-22) on connecting to the peripheral using nrf52840 as central

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