USR-DR504 ¶ÌÐÅATÖ¸Áî°¸Àý
2019-12-18

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usr.cnAT+UART;
+UART:115200,8,1,NONE,NFC
usr.cnAT+UART=9600,8,1,NONE,NFC;
OK
usr.cnAT+Z;
OK
usr.cnAT+UART;
+UART:9600,8,1,NONE,NFC