<div style="text-align:left;"> <p class="p1">안녕하세요<span class="s1">. </span></p> <p class="p2"><br></p> <p class="p3">c++ visual studio 2017 <span class="s2">환경에서</span> USB serial <span class="s2">통신을</span> <span class="s2">작업하던</span> <span class="s2">중</span> <span class="s2">막히는</span> <span class="s2">부분이</span> <span class="s2">있어서</span> <span class="s2">질문드립니다</span>.</p> <p class="p2"><br></p> <p class="p1">제<span class="s1"> </span>목표는<span class="s1"> </span>카드리더기<span class="s1"> </span>단말기와<span class="s1"> </span>컴퓨터를<span class="s1"> </span>연동시키는것<span class="s1"> </span>입니다<span class="s1">.</span></p> <p class="p2"><br></p> <p class="p1">현재<span class="s1"> com </span>포트<span class="s1"> </span>연결은<span class="s1"> </span>했고<span class="s1">,</span></p> <p class="p1">명시된<span class="s1"> </span>데이터<span class="s1"> </span>패킷을<span class="s1"> </span>전송할<span class="s1"> </span>때<span class="s1"> </span>문제가<span class="s1"> </span>있습니다<span class="s1">.</span></p> <p class="p2"><br></p> <p class="p1">데이터<span class="s1"> </span>패킷<span class="s1"> </span>구조는<span class="s1">, </span>구조체로<span class="s1"> </span>되어있으며<span class="s1">, </span>전송할<span class="s1"> </span>데이터는<span class="s1"> </span>이미<span class="s1"> </span>명시되어있습니다<span class="s1">.</span></p> <p class="p1">구조체를<span class="s1"> </span>선언하고<span class="s1">, </span>그<span class="s1"> </span>안에<span class="s1"> </span>값을<span class="s1"> </span>넣고<span class="s1">, </span>그<span class="s1"> </span>구조체<span class="s1"> </span>자체를<span class="s1"> WriteFile</span>을<span class="s1"> </span>통해<span class="s1"> </span>전송하는<span class="s1"> </span>과정에서<span class="s1"> </span>값이<span class="s1"> </span>제대로<span class="s1"> </span>전달되지않는<span class="s1"> </span>문제가<span class="s1"> </span>있습니다<span class="s1">.</span></p> <p class="p1">제가<span class="s1"> </span>보낸<span class="s1"> </span>값은<span class="s1">, </span>리더기를<span class="s1"> </span>카드를<span class="s1"> </span>인식할<span class="s1"> </span>수<span class="s1"> </span>있는<span class="s1"> </span>대기<span class="s1"> </span>상태로<span class="s1"> </span>변경하는<span class="s1"> </span>것이고<span class="s1">, </span>값이<span class="s1"> </span>제대로<span class="s1"> </span>전달된다면<span class="s1"> '</span>대기상태<span class="s1">'</span>로<span class="s1"> </span>변경이<span class="s1"> </span>이루어져야하는데<span class="s1">, </span>아무런<span class="s1"> </span>반응이<span class="s1"> </span>없습니다<span class="s1">.</span></p> <p class="p2"><br></p> <p class="p1">제가<span class="s1"> </span>패킷을<span class="s1"> </span>만들고<span class="s1">, </span>보내는<span class="s1"> </span>과정에서<span class="s1"> </span>잘못한건지<span class="s1"> ... </span>잘<span class="s1"> </span>모르겠어서<span class="s1"> </span>질문드립니다<span class="s1"> ..</span>ㅠㅠㅠ<span class="s1"> </span></p> <p class="p1">코드<span class="s1"> </span>일부<span class="s1"> </span>캡쳐본<span class="s1"> </span>함께<span class="s1"> </span>첨부합니다<span class="s1">.</span></p> <p class="p1">조언<span class="s1"> </span>주시면<span class="s1"> </span>너무<span class="s1"> </span>감사할<span class="s1"> </span>것같습니다<span class="s1">. </span>감사합니다<span class="s1">.</span></p> <p class="p1"><span class="s1"><br></span></p> <p class="p1"><span class="s1"><br></span></p> <p class="p1"><span class="s1"><br></span></p> <p class="p1"><span class="s1"><br></span></p> <p class="p1"><span class="s1"><br></span></p> <p class="p1"><span class="s1"><br></span></p> <p class="p1"><span class="s1">기본 설정 부분입니다. 및 패킷을 만드는 부분입니다.</span></p></div> <div style="text-align:left;"><br></div> <div style="text-align:left;"> <div style="text-align:left;"><img src="http://thimg.todayhumor.co.kr/upfile/201806/15297366523fe31fc0734f45d98a4dcea2e760b78d__mn126771__w602__h418__f38422__Ym201806.png" width="602" height="418" alt="기본설정.PNG" style="border:none;" filesize="38422"></div><br></div> <div style="text-align:left;"><br></div> <div style="text-align:left;">데이터를 쓰는 함수 입니다.</div> <div style="text-align:left;"><br></div> <div style="text-align:left;"> <div style="text-align:left;"><img src="http://thimg.todayhumor.co.kr/upfile/201806/1529736694a610b71a56204b8f8467fa8a173f3d53__mn126771__w817__h228__f20940__Ym201806.png" width="800" height="223" alt="데이터 쓰는 구문.PNG" class="chimg_photo" style="border:none;" filesize="20940"></div><br></div> <div style="text-align:left;"><br></div> <div style="text-align:left;">감사합니다.</div>
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