在我的应用程序中,我向OBD端口发送四个基本命令并获取十六进制数据... 我不知道为什么我发送命令:
ME:010c
汽车:10c410c0000
为什么消息不以4开头? 只获得410c和obd从汽车收到的数据?
我使用此方法来管理十六进制响应并将其转换为人类可读数据,而RawData是一个String,它接收消息并清除所有空间,如下所示 41 0c 00 00 = 410c0000
public String getCalculatedResult() {
//TODO devo convertire i dati da esadecimale a decimale ed effettuare i calcoli
int calculatedData = 0;
String dataToShow = null;
//Log.d("ObdCommand", "rawData: " + rawData.substring(3));
calculatedData = Integer.parseInt(rawData.substring(7), 16);
if (Pattern.compile(Pattern.quote(rawData.substring(3,4)),
Pattern.CASE_INSENSITIVE).matcher("410D").find()){
Log.d("ObdCommand", "dentro 410D: ");
//Velocità veicolo km/h
dataToShow = String.valueOf(calculatedData) + " Km/h";
Log.d("ObdCommand", "rawData: " + dataToShow);
}else if (Pattern.compile(Pattern.quote(rawData.substring(3,4)),
Pattern.CASE_INSENSITIVE).matcher("410C").find()){
Log.d("ObdCommand", "dentro 410C: ");
//Giri minuto veicolo rpm
calculatedData = calculatedData/4;
dataToShow = String.valueOf(calculatedData) + " rpm";
}else if (rawData.substring(3).startsWith("4105")){
//Temperatura refrigetante C°
calculatedData = calculatedData - 40;
dataToShow = String.valueOf(calculatedData) + " C°";
}else if (rawData.substring(3).startsWith("4151")){
//Tipo di carburante
if (rawData.substring(7).startsWith("09")){
//Benzina
dataToShow = "Benzina";
}else if (rawData.substring(7).startsWith("0d")){
//Metano
dataToShow = "Metano";
}
}
return dataToShow;
}
我使用rawData.substring(7)因为3是我在帖子开头告诉的字符
10℃
其他4个是
410C
所以我只获得十进制所需的值...但有时我会超出界限......
有人有一些想法可以解决这个问题吗?
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