我编写了一个代码,它能够成功找到配对的 OBD 并与 ELM327 建立连接,但是当我尝试发送 ATZ 命令时,应用程序崩溃了。
这是代码片段,我可能做错了
public HashMap<String, String> startOBDCommunicator(
BluetoothSocket btSocketConnected, String paramClassName,
String methodName) {
HashMap<String, String> dataRetriever = new HashMap<String, String>();
sendDataToOBD(btSocketConnected, "ATZ\r");
dataRetriever.put("Reset", readDataFromOBD(btSocketConnected));
sendDataToOBD(btSocketConnected, "ATS0\r");
dataRetriever.put("Space Control", readDataFromOBD(btSocketConnected));
sendDataToOBD(btSocketConnected, "ATE0\r");
dataRetriever.put("Echo control", readDataFromOBD(btSocketConnected));
sendDataToOBD(btSocketConnected, "ATL0\r");
dataRetriever.put("Line feed", readDataFromOBD(btSocketConnected));
sendDataToOBD(btSocketConnected, "ATAT0\r");
dataRetriever
.put("Adaptive Timing", readDataFromOBD(btSocketConnected));
sendDataToOBD(btSocketConnected, "ATST10\r");
dataRetriever.put("Time Out", readDataFromOBD(btSocketConnected));
sendDataToOBD(btSocketConnected, "ATI\r");
dataRetriever.put("Device Description",
readDataFromOBD(btSocketConnected));
sendDataToOBD(btSocketConnected, "ATDP\r");
dataRetriever.put("Protocol Information1",
readDataFromOBD(btSocketConnected));
sendDataToOBD(btSocketConnected, "ATSPA0\r");
dataRetriever
.put("Auto Protocol",
readBytesFromOBD(btSocketConnected, paramClassName,
methodName));
sendDataToOBD(btSocketConnected, "010C\r");
dataRetriever
.put("RPM param",
readBytesFromOBD(btSocketConnected, paramClassName,
methodName));
sendDataToOBD(btSocketConnected, "010D\r");
dataRetriever
.put("Speed parameters",
readBytesFromOBD(btSocketConnected, paramClassName,
methodName));
sendDataToOBD(btSocketConnected, "0104\r");
dataRetriever
.put("engine load value parameters",
readBytesFromOBD(btSocketConnected, paramClassName,
methodName));
sendDataToOBD(btSocketConnected, "0105\r");
dataRetriever
.put("Engine coolant temperature parameters",
readBytesFromOBD(btSocketConnected, paramClassName,
methodName));
sendDataToOBD(btSocketConnected, "012F\r");
dataRetriever
.put("Fuel Level Input",
readBytesFromOBD(btSocketConnected, paramClassName,
methodName));
return dataRetriever;
}
我不确定我在哪里做错了,所以我将整个代码的流程分享为两个要点,https://gist.github.com/sankarganesh/6376031,这个要点包含活动文件和蓝牙套接字的另一个要点听众https://gist.github.com/sankarganesh/6376039