SD卡根目录下创建文件并写入数据

[{"title":"（32个子文件187KB）SD卡根目录下创建文件并写入数据","children":[{"title":"根目录下创建文件，并写入数据","children":[{"title":"znFATtest","children":[{"title":"znFAT.OBJ <span style='color:#111;'>99.55KB</span>","children":null,"spread":false},{"title":"sd.LST <span style='color:#111;'>16.58KB</span>","children":null,"spread":false},{"title":"myfun.OBJ <span style='color:#111;'>4.99KB</span>","children":null,"spread":false},{"title":"znfattest.hex <span style='color:#111;'>61.31KB</span>","children":null,"spread":false},{"title":"znfattest <span style='color:#111;'>126.49KB</span>","children":null,"spread":false},{"title":"znfattest.Uv2 <span style='color:#111;'>2.20KB</span>","children":null,"spread":false},{"title":"uart.LST <span style='color:#111;'>8.62KB</span>","children":null,"spread":false},{"title":"znfattest.Opt <span style='color:#111;'>1.56KB</span>","children":null,"spread":false},{"title":"znfattest_Opt.Bak <span style='color:#111;'>1.56KB</span>","children":null,"spread":false},{"title":"uart.h <span style='color:#111;'>459B</span>","children":null,"spread":false},{"title":"znFAT.c <span style='color:#111;'>52.90KB</span>","children":null,"spread":false},{"title":"znFAT.h <span style='color:#111;'>8.40KB</span>","children":null,"spread":false},{"title":"myfun.LST <span style='color:#111;'>4.19KB</span>","children":null,"spread":false},{"title":"mytype.h <span style='color:#111;'>406B</span>","children":null,"spread":false},{"title":"_main.OBJ <span style='color:#111;'>21.09KB</span>","children":null,"spread":false},{"title":"cj.h <span style='color:#111;'>1.59KB</span>","children":null,"spread":false},{"title":"clean.bat <span style='color:#111;'>88B</span>","children":null,"spread":false},{"title":"znfattest.plg <span style='color:#111;'>949B</span>","children":null,"spread":false},{"title":"znfattest.M51 <span style='color:#111;'>83.11KB</span>","children":null,"spread":false},{"title":"znfattest.lnp <span style='color:#111;'>99B</span>","children":null,"spread":false},{"title":"znFAT.LST <span style='color:#111;'>82.29KB</span>","children":null,"spread":false},{"title":"uart.c <span style='color:#111;'>4.97KB</span>","children":null,"spread":false},{"title":"myfun.c <span style='color:#111;'>2.20KB</span>","children":null,"spread":false},{"title":"uart.OBJ <span style='color:#111;'>7.07KB</span>","children":null,"spread":false},{"title":"znfattest_Uv2.Bak <span style='color:#111;'>2.21KB</span>","children":null,"spread":false},{"title":"sd.OBJ <span style='color:#111;'>16.06KB</span>","children":null,"spread":false},{"title":"_main.LST <span style='color:#111;'>5.09KB</span>","children":null,"spread":false},{"title":"sd.h <span style='color:#111;'>1.61KB</span>","children":null,"spread":false},{"title":"sd.c <span style='color:#111;'>9.67KB</span>","children":null,"spread":false},{"title":"myfun.h <span style='color:#111;'>856B</span>","children":null,"spread":false},{"title":"_main.c <span style='color:#111;'>3.03KB</span>","children":null,"spread":false}],"spread":false},{"title":"1.jpg <span style='color:#111;'>34.31KB</span>","children":null,"spread":false}],"spread":true}],"spread":true}]