Hi,

On 3 Apr 2019, at 13.17, piotr@... wrote:

# BT_HCI_OP_READ_LOCAL_EXT_FEATURES BT_OP(BT_OGF_INFO, 0x0004)
$ hcitool cmd 04 04

< HCI Command: Read Local Extended Features (0x04|0x0004) plen 0 #119 [hci0] 865.683100
invalid packet size

HCI Event: Command Complete (0x0e) plen 4 #120 [hci0] 865.684035

Read Local Extended Features (0x04|0x0004) ncmd 1
Status: Unknown HCI Command (0x01)

HCI_Read_Local_Extended_Features is a BR/EDR-only command, which is why you are getting this response from the LE-only controller. You’ll also see that it’s not listed in the supported commands response.

Johan