Hi Wang, > I want to explain it as “Master Or Slave”, because this is explained in the Core_v5.2 > > 8.6.5 Role switch > There are several occasions when a role switch is used: > • A role switch is necessary in order to make a paging device a slave when > joining an existing piconet, since by definition the paging device is initially > master of a piconet involving the pager (master) and the paged (slave) > device. > • A role switch is necessary in order for a slave in an existing piconet to set up > a new piconet with itself as master and the original piconet master as slave. > If the original piconet had more than one slave, then this implies a double > role for the original piconet master; it becomes a slave > > Signed-off-by: wangyouwan <wangyouwan@xxxxxxxxxxxxx> > --- > monitor/packet.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/monitor/packet.c b/monitor/packet.c > index 52d22ab21..b73615509 100644 > --- a/monitor/packet.c > +++ b/monitor/packet.c > @@ -4143,7 +4143,7 @@ static void create_conn_cmd(const void *data, uint8_t size) > str = "Stay master"; > break; > case 0x01: > - str = "Allow slave"; > + str = "Master Or Slave"; > break; the text was verbatim from Bluetooth 4.x core spec. If that has changed in Core 5.3 spec, then we can use that one. Regards Marcel