qt 几个有点价值的个人创建的程序,字符串转ascii,字符串转hex,hex转字符,时间bcd互转字符串,小数转字符串(直接使用qt的转有bug)(虽然网上有很多c的,但是qt写出来的,更加简洁)
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//时间转换2021-01-07 12:12:12 =>0x21 0x01 0x07 0x12 0x12 0x12 void Hun::strTimeToBCD(char *tem, QString time) { bool ok; tem[0] = time.mid(2,2).toUInt(&ok,16); tem[1] = time.mid(5,2).toUInt(&ok,16); tem[2] = time.mid(8,2).toUInt(&ok,16); if(time.length()>10){ tem[3] = time.mid(11,2).toUInt(&ok,16); tem[4] = time.mid(14,2).toUInt(&ok,16); tem[5] = time.mid(17,2).toUInt(&ok,16); } } QString Hun::BCDToStrTime(char *tem, int len) { bool ok;QString temstr=""; QString time = QByteArray(tem,len).toHex();//21 02 24 10 12 13 if (len==1)temstr = "20"+time; else if(len==2)temstr = "20"+time.mid(0,2)+"-"+time.mid(2,2); else if(len==3)temstr = "20"+time.mid(0,2)+"-"+time.mid(2,2)+"-"+time.mid(4,2); else if(len==4)temstr = "20"+time.mid(0,2)+"-"+time.mid(2,2)+"-"+time.mid(4,2)+" "+time.mid(6,2)+":00:00"; else if(len==5)temstr = "20"+time.mid(0,2)+"-"+time.mid(2,2)+"-"+time.mid(4,2)+" "+time.mid(6,2)+":"+time.mid(8,2)+":00"; else temstr = "20"+time.mid(0,2)+"-"+time.mid(2,2)+"-"+time.mid(4,2)+" "+time.mid(6,2)+":"+time.mid(8,2)+":"+time.mid(10,2); return temstr; } //u32 数据缩小100倍之后,转字符串小数显示 QString Hun::formatData(u32 *tem, int len) { QString t = "\n"; for(int i=0;i<len;i++){ t+=QString(" %1.%2").arg(tem[i]/100).arg(tem[i]%100); if((i+1)%12==0)t+="\n";if((i+1)%24==0)t+="\n"; } return t; } //hex转字符串 QByteArray有个toHex()函数可以直接转为hex字符串显示 //字符串转hex 在转换时候直接使用字符串的toUInt(&ok,16)函数可以直接显示,其中&ok可以直接使用nullptr代替 //char转uchar不会丧失数据,可以大胆转, 案例如下 QString meterNumber = "0000000100000001"; char bcd[8];bool ok; for(int i=0;i<8;i++){bcd[i] = meterNumber.mid(2*i,2).toUInt(&ok,16);} QString te1 = QByteArray((char*)bcd,8).toHex();//te1=>0000000100000001
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