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    Posts made by torgeir123

    • getting java.lang.UnsatisfiedLinkError when running as modbusmaster

      Hello,

      I am experiencing problems running the following code:

            ModbusFactory factory = new ModbusFactory();
            
            SerialParameters params = new SerialParameters();
            
            params.setCommPortId("/dev/ttyM0");
            params.setBaudRate(9600);
            params.setDataBits(8);
            params.setParity(0);
            params.setStopBits(1);
            
            RtuMaster master = (RtuMaster) factory.createRtuMaster(params);
            
            
          try {
              master.setTimeout(1000);
              master.init();
              
                List<Integer> slaves = master.scanForSlaveNodes();
                System.out.println("slaves: "+slaves);
           
          } catch (ModbusInitException ex) {
              Logger.getLogger(modbus.class.getName()).log(Level.SEVERE, null, ex);
          }
      

      when I run the above code, I get the following error:

      java -cp lib/ -jar HaystackClient.jar
      log4j:WARN No appenders could be found for logger (com.serotonin.io.serial.JsscSerialPortProxy).
      log4j:WARN Please initialize the log4j system properly.
      Exception in thread "main" java.lang.UnsatisfiedLinkError: /root/.jssc/linux/libjSSC-2.8_armsf.so: /root/.jssc/linux/libjSSC-2.8_armsf.so: cannot open shared object file: No such file or directory
      at java.lang.ClassLoader$NativeLibrary.load(Native Method)
      at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1938)
      at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1821)
      at java.lang.Runtime.load0(Runtime.java:809)
      at java.lang.System.load(System.java:1086)
      at jssc.SerialNativeInterface.<clinit>(SerialNativeInterface.java:172)
      at jssc.SerialPort.<init>(SerialPort.java:120)
      at com.serotonin.io.serial.JsscSerialPortProxy.openImpl(JsscSerialPortProxy.java:111)
      at com.serotonin.io.serial.SerialPortProxy.open(SerialPortProxy.java:80)
      at com.serotonin.io.serial.SerialUtils.openSerialPort(SerialUtils.java:95)
      at com.serotonin.modbus4j.serial.SerialMaster.init(SerialMaster.java:58)
      at com.serotonin.modbus4j.serial.rtu.RtuMaster.init(RtuMaster.java:45)
      at modbus.main(modbus.java:39)

      Two strange things:

      1: The file in the error message actually exists
      2: The processor is an ARMv7 Cortex-A8 which has hard float, so it doesn't make sense to load armsf lib.

      Any ideas would be greatly appreciated :-)

      posted in Modbus4J general discussion
      torgeir123T
      torgeir123