請問一下要怎麼顯示"0"出來 |
答題得分者是:syntax
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RS
一般會員 ![]() ![]() 發表:7 回覆:12 積分:3 註冊:2009-12-04 發送簡訊給我 |
各位前輩好 小弟我在做CRC傳送的時候 遇到一個小麻煩
那就是無法顯示0出來 請問各位能幫忙一下嘛 謝謝 void __fastcall TForm1::BitBtn1Click(TObject *Sender) { h_RS232 = CreateFile("Com1 :" , GENERIC_READ | GENERIC_WRITE , 0 , NULL , OPEN_EXISTING , 0 , NULL ); } //--------------------------------------------------------------------------- void __fastcall TForm1::BitBtn3Click(TObject *Sender) { DCB dcb; ZeroMemory(&dcb, sizeof(dcb)); dcb.DCBlength = sizeof(dcb); dcb.BaudRate = 9600; dcb.ByteSize = 8; dcb.Parity = 0; // NOPARITY dcb.StopBits = 0; //ONESTOPBIT static byte CRCHi[]={ 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40} ; static byte CRCLo[]={ 0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3, 0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26, 0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5, 0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C, 0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80, 0x40} ; unsigned char buf[8]; int i,j,i_Hi=0xFF,i_Low=0xFF, i_CRC; buf[0] = 1; buf[1] = 3; buf[2] = 0; buf[3] = 0; buf[4] = 0; buf[5] = 1; for (i=0 ; i < 6 ; i ) { j = i_Hi ^ buf[i]; i_Hi = i_Low ^ CRCHi[j]; i_Low = CRCLo[j]; } i_CRC = (i_Hi << 8 | i_Low); if (i_CRC > 256) { buf[6] = i_CRC /256 ; buf[7] = i_CRC % 256 ; } else { buf[6] = 0x00; buf[7] = i_CRC; } String A; Label3->Caption = (A.sprintf("%c",buf[0])) ; Label4->Caption = (A.sprintf("%c",buf[1])) ; Label5->Caption = (A.sprintf("%c",buf[2])) ; Label6->Caption = (A.sprintf("%c",buf[3])) ; Label7->Caption = (A.sprintf("%c",buf[4])) ; Label8->Caption = (A.sprintf("%c",buf[5])) ; Label9->Caption = (A.sprintf("%c",buf[6])) ; Label10->Caption = (A.sprintf("%c",buf[7])) ; if (SetCommState(h_RS232 , &dcb)) { DWORD ByteCount; WriteFile(h_RS232 , Label3->Caption.c_str() , strlen(Label3->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label4->Caption.c_str() , strlen(Label4->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label5->Caption.c_str() , strlen(Label5->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label6->Caption.c_str() , strlen(Label6->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label7->Caption.c_str() , strlen(Label7->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label8->Caption.c_str() , strlen(Label8->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label9->Caption.c_str() , strlen(Label9->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label10->Caption.c_str() , strlen(Label10->Caption.c_str()) , &ByteCount , NULL); } } 編輯記錄
RS 重新編輯於 2010-01-22 08:45:10, 註解 無‧
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syntax
尊榮會員 ![]() ![]() ![]() ![]() ![]() ![]() 發表:26 回覆:1139 積分:1258 註冊:2002-04-23 發送簡訊給我 |
你要顯示的內容,其格式是文字還是數字?思考一下吧~
sprintf 若 buf 的內容為 1. 字串,使用 %c 沒錯 2. 數字,請使用 ... 還是去翻書吧 ===================引 用 RS 文 章=================== 各位前輩好 小弟我在做CRC傳送的時候 遇到一個小麻煩 那就是無法顯示0出來 請問各位能幫忙一下嘛 謝謝 void __fastcall TForm1::BitBtn1Click(TObject *Sender) { h_RS232 = CreateFile("Com1 :" , GENERIC_READ | GENERIC_WRITE , 0 , NULL , OPEN_EXISTING , 0 , NULL ); } //--------------------------------------------------------------------------- void __fastcall TForm1::BitBtn3Click(TObject *Sender) { DCB dcb; ZeroMemory(&dcb, sizeof(dcb)); dcb.DCBlength = sizeof(dcb); dcb.BaudRate = 9600; dcb.ByteSize = 8; dcb.Parity = 0; // NOPARITY dcb.StopBits = 0; //ONESTOPBIT static byte CRCHi[]={ 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40} ; static byte CRCLo[]={ 0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3, 0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26, 0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5, 0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C, 0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80, 0x40} ; unsigned char buf[8]; int i,j,i_Hi=0xFF,i_Low=0xFF, i_CRC; buf[0] = 1; buf[1] = 3; buf[2] = 0; buf[3] = 0; buf[4] = 0; buf[5] = 1; for (i=0 ; i < 6 ; i ) { j = i_Hi ^ buf[i]; i_Hi = i_Low ^ CRCHi[j]; i_Low = CRCLo[j]; } i_CRC = (i_Hi << 8 | i_Low); if (i_CRC > 256) { buf[6] = i_CRC /256 ; buf[7] = i_CRC % 256 ; } else { buf[6] = 0x00; buf[7] = i_CRC; } String A; Label3->Caption = (A.sprintf("%c",buf[0])) ; Label4->Caption = (A.sprintf("%c",buf[1])) ; Label5->Caption = (A.sprintf("%c",buf[2])) ; Label6->Caption = (A.sprintf("%c",buf[3])) ; Label7->Caption = (A.sprintf("%c",buf[4])) ; Label8->Caption = (A.sprintf("%c",buf[5])) ; Label9->Caption = (A.sprintf("%c",buf[6])) ; Label10->Caption = (A.sprintf("%c",buf[7])) ; if (SetCommState(h_RS232 , &dcb)) { DWORD ByteCount; WriteFile(h_RS232 , Label3->Caption.c_str() , strlen(Label3->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label4->Caption.c_str() , strlen(Label4->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label5->Caption.c_str() , strlen(Label5->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label6->Caption.c_str() , strlen(Label6->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label7->Caption.c_str() , strlen(Label7->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label8->Caption.c_str() , strlen(Label8->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label9->Caption.c_str() , strlen(Label9->Caption.c_str()) , &ByteCount , NULL); WriteFile(h_RS232 , Label10->Caption.c_str() , strlen(Label10->Caption.c_str()) , &ByteCount , NULL); } } |
RS
一般會員 ![]() ![]() 發表:7 回覆:12 積分:3 註冊:2009-12-04 發送簡訊給我 |
|
syntax
尊榮會員 ![]() ![]() ![]() ![]() ![]() ![]() 發表:26 回覆:1139 積分:1258 註冊:2002-04-23 發送簡訊給我 |
是的,但數字,既不是 字元 亦不是 字串,它是數字
如果硬要輸出,也不是不可,但相信你知道,螢幕是印不出特殊字元或空白的,剛好 0 就是 空白 http://home.educities.edu.tw/wanker742126/asm/ap04.html 數字顯示輸出,請先轉換 ===================引 用 RS 文 章=================== syntax前輩你好~ 小弟我是要做數字的傳送 我在buf裡設定數值 然後要丟到Modbus做測試 但發現我設定buf為0時 Modbus無法顯示0出來 所以我想問各位前輩是否有解決之道 謝謝 請問一下 字元不是用%c而字串不是用%s嗎 |
RS
一般會員 ![]() ![]() 發表:7 回覆:12 積分:3 註冊:2009-12-04 發送簡訊給我 |
===================引 用 syntax 文 章=================== 是的,但數字,既不是 字元 亦不是 字串,它是數字 如果硬要輸出,也不是不可,但相信你知道,螢幕是印不出特殊字元或空白的,剛好 0 就是 空白 http://home.educities.edu.tw/wanker742126/asm/ap04.html 數字顯示輸出,請先轉換 ===================引 用 RS 文 章=================== syntax前輩你好~ 小弟我是要做數字的傳送 我在buf裡設定數值 然後要丟到Modbus做測試 但發現我設定buf為0時 Modbus無法顯示0出來 所以我想問各位前輩是否有解決之道 謝謝 請問一下 字元不是用%c而字串不是用%s嗎 謝謝 syntax前輩 我會試看看 |
foreman
高階會員 ![]() ![]() ![]() ![]() 發表:3 回覆:124 積分:190 註冊:2004-09-10 發送簡訊給我 |
大大:
modbus的格式有兩種: RTU mode: 直接 WriteFile( h_RS232, buf, 7, &ByteCount, NULL); ascii mode: 比較麻煩 String s s.printf(":ddddddd\n", buf[0],buf[1],buf[2],buf[3],buf[4],buf[5],buf[6],buf[7]); WriteFile(h_RS232 , s.c_str() , strlen(s.c_str()) , &ByteCount , NULL); 您的CRC怪怪,好像應該 buf[6] = i_CRC % 256 ; buf[7] = i_CRC /256 ; 請參考這PDF http://www.conch.com.tw/upload/file/215_file_1_cht.pdf |
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