Wizfi220 uart at command 문의
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RE: Wizfi220 uart at command 문의
by ssekim ·
정확한 아스키 Byte 단위의 데이터가 아닌 경우에는 에러를 출력합니다.
아스키 데이터 뿐만 아니라 Hex Data Level로 확인해 보시기 바랍니다.
예를 들어서
[TX] 0x41 0x54 0x0D
[RX] 0x41 0x54 0x0D …
그리고, 초기에는 Tx/Rx에 쓰레기 값이 있을 수 있으므로 "AT 0x0d"를 두번 보내보시기 바랍니다.