返回错误码说明.txt

写卡器的串口测试程序, 有delphi的,vb的... 涉用到好几有语言, 还包括说明

1.动态库中函数返回码含义如下:

  readchar的返回码：
    0:	正常返回
   -1:	创建串口句柄错误:CreateFile Failed!
   -2:	建立串口句柄通信错误:SetupComm Failed!
   -3:	获取串口状态错误:GetCommState Failed!
   -4:	参数错误:model不等于1和2!
   -5:	设置串口参数错误:SetCommState Failed!
   -6:	model=2,发送命令码，但接受到的并非合法的数据序列:First character is not ESC!
   -7:	model=2,发现异常退出字符:Get 0x7F !
   -8:	model=1,发送错误:WriteFile Failed!
   -9:  model=1,接收错误:ReadFile Failed!
   -10:	model=1,发送错误:WriteFile Failed!
   -11:	model=1,发送错误:WriteFile Failed!
   -12: model=1,数据缓冲区中接受到*字符！
  
  writechar 的返回码：   
    0:	正常返回
   -1:	创建串口句柄错误:CreateFile Failed!
   -2:	建立串口句柄通信错误:SetupComm Failed!
   -3:	获取串口状态错误:GetCommState Failed!
   -4:	参数错误:model不等于1和2!
   -5:	设置串口参数错误:SetCommState Failed!
   -6:	model=2,写卡错误!
   -7:	model=1,发送错误:WriteFile Failed!
   -8:  model=1,接收错误:ReadFile Failed!
   -9:	model=1,发送错误:WriteFile Failed!
   -10:	model=1,接收错误:ReadFile Failed!
   -11: model=1,数据缓冲区中接受到*字符！