Examples with ReadMultipleRegistersRequest net.wimpi.modbus.msg.ReadMultipleRegistersRequest used on opensource projects

Example 1 with ReadMultipleRegistersRequest

use of net.wimpi.modbus.msg.ReadMultipleRegistersRequest in project openhab1-addons by openhab.

the class ModbusSlave method update.

/**
     * Reads data from the connected device and updates items with the new data
     *
     * @param binding ModbusBindig that stores providers information
     */
public void update(ModbusBinding binding) {
    try {
        Object local = null;
        Exception localReadError = null;
        try {
            if (ModbusBindingProvider.TYPE_COIL.equals(getType())) {
                ModbusRequest request = new ReadCoilsRequest(getStart(), getLength());
                if (this instanceof ModbusSerialSlave) {
                    request.setHeadless();
                }
                ReadCoilsResponse response = (ReadCoilsResponse) getModbusData(request);
                local = response.getCoils();
            } else if (ModbusBindingProvider.TYPE_DISCRETE.equals(getType())) {
                ModbusRequest request = new ReadInputDiscretesRequest(getStart(), getLength());
                ReadInputDiscretesResponse response = (ReadInputDiscretesResponse) getModbusData(request);
                local = response.getDiscretes();
            } else if (ModbusBindingProvider.TYPE_HOLDING.equals(getType())) {
                ModbusRequest request = new ReadMultipleRegistersRequest(getStart(), getLength());
                ReadMultipleRegistersResponse response = (ReadMultipleRegistersResponse) getModbusData(request);
                local = response.getRegisters();
            } else if (ModbusBindingProvider.TYPE_INPUT.equals(getType())) {
                ModbusRequest request = new ReadInputRegistersRequest(getStart(), getLength());
                ReadInputRegistersResponse response = (ReadInputRegistersResponse) getModbusData(request);
                local = response.getRegisters();
            }
        } catch (ModbusException e) {
            // Logging already done in getModbusData
            localReadError = e;
        } catch (ModbusConnectionException e) {
            // Logging already done in getModbusData
            localReadError = e;
        } catch (ModbusUnexpectedTransactionIdException e) {
            // Logging already done in getModbusData
            localReadError = e;
        }
        if (storage == null) {
            storage = local;
            readError = localReadError;
        } else {
            synchronized (storage) {
                storage = local;
                readError = localReadError;
            }
        }
        Collection<String> items = binding.getItemNames();
        for (String item : items) {
            updateItem(binding, item);
        }
    } catch (Exception e) {
        logger.error("ModbusSlave ({}) error getting response from slave", name, e);
    }
}

Example 2 with ReadMultipleRegistersRequest

use of net.wimpi.modbus.msg.ReadMultipleRegistersRequest in project openhab1-addons by openhab.

the class SimultaneousReadWriteTestCase method testSimultaneousReadWrite.

/**
     * Testing how binding handles simultaneous read and writes coming in.
     *
     * Even though the server in this test is able to handle at most one client at a time the binding
     * queues requests.
     *
     * Note higher artificialServerWait in constructor
     *
     * @throws Exception
     */
@Test
public void testSimultaneousReadWrite() throws Exception {
    binding = new ModbusBinding();
    binding.updated(addSlave(addSlave(newLongPollBindingConfig(), SLAVE_NAME, type, null, 0, READ_COUNT), SLAVE2_NAME, type, null, 0, READ_COUNT));
    configureItems(SLAVE_NAME);
    configureItems(SLAVE2_NAME);
    /*
         * - both slaves read twice -> 4 read requests
         * - followed by write (slave1) -> 1 write request
         * - both slaves read once -> 2 read requests.
         * - Finally three writes (slave2) -> 3 write requets
         */
    int expectedRequests = 10;
    ExecutorService pool = Executors.newFixedThreadPool(expectedRequests);
    binding.execute();
    pool.execute(new UpdateThread(binding));
    pool.execute(new WriteCommandThread(binding, SLAVE_NAME, command));
    pool.execute(new UpdateThread(binding));
    pool.execute(new WriteCommandThread(binding, SLAVE2_NAME, command));
    pool.execute(new WriteCommandThread(binding, SLAVE2_NAME, command));
    pool.execute(new WriteCommandThread(binding, SLAVE2_NAME, command));
    pool.shutdown();
    pool.awaitTermination(artificialServerWait * 7 + 5000, TimeUnit.MILLISECONDS);
    waitForRequests(expectedRequests);
    ArrayList<ModbusRequest> values = modbustRequestCaptor.getAllReturnValues();
    System.err.println(values);
    int readCount = 0;
    int writeCount = 0;
    for (ModbusRequest request : values) {
        if (request instanceof ReadMultipleRegistersRequest) {
            readCount++;
        } else if (request instanceof WriteSingleRegisterRequest) {
            writeCount++;
        }
    }
    Assert.assertEquals(6, readCount);
    Assert.assertEquals(4, writeCount);
}