ModBus CRC16 Demo

//--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "Unit1.h" //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm1 *Form1; //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { } //--------------------------------------------------------------------------- void __fastcall TForm1::Button2Click(TObject *Sender) { Close(); } //--------------------------------------------------------------------------- __fastcall TForm1::fun_SerialCRC(uchar *puchMsg, uint usDataLen) { uchar uchCRCHi; uchar uchCRCLo; uint uIndex ; uchCRCHi = 0xff; uchCRCLo = 0xff; while (usDataLen--) { uIndex = uchCRCHi ^ *puchMsg++; uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex]; uchCRCLo = auchCRCLo[uIndex]; } return (uchCRCHi << 8 | uchCRCLo); } //--------------------------------------------------------------------------- void __fastcall TForm1::Button1Click(TObject *Sender) { String st1 = Edit1->Text; //这里调试通不过 String st2 = fun_SerialCRC(&st1,12); //这里调试通不过 Edit2->Text = st2; } //---------------------------------------------------------------------------