esp32固件，启用 ESP-AT 经典蓝牙

+CMD:138,"AT+BLUFINAME",0,1,1,0 +CMD:139,"AT+BLUFI",0,1,1,0 +CMD:140,"AT+BTINIT",0,1,1,0 +CMD:141,"AT+BTNAME",0,1,1,0 +CMD:142,"AT+BTSCANMODE",0,1,1,0 +CMD:143,"AT+BTSTARTDISC",0,0,1,0 +CMD:144,"AT+BTPINREPLY",0,0,1,0 +CMD:145,"AT+BTENCDEV",0,1,0,0 +CMD:146,"AT+BTENCCLEAR",0,0,1,1 +CMD:147,"AT+BTCOD",0,0,1,0 +CMD:148,"AT+BTPOWER",0,1,1,0 +CMD:149,"AT+BTSPPINIT",0,1,1,0 +CMD:150,"AT+BTSPPCONN",0,1,1,0 +CMD:151,"AT+BTSPPSTART",0,0,0,1 +CMD:152,"AT+BTSPPDISCONN",0,0,1,0 +CMD:153,"AT+BTSPPSEND",0,0,