Examples with PropertyId io.openems.impl.protocol.studer.internal.object.PropertyId used on opensource projects

Example 1 with PropertyId

use of io.openems.impl.protocol.studer.internal.object.PropertyId in project openems by OpenEMS.

the class StuderConnection method execute.

public void execute() throws OpenemsException {
    try {
        if (connection != null && connection.isOpen() && request != null) {
            OutputStream out = connection.getOutputStream();
            for (byte b : request.getBytes()) {
                out.write(b);
            }
            out.flush();
            out.close();
            InputStream in = connection.getInputStream();
            byte startByte = (byte) in.read();
            if (startByte == (byte) 0xAA) {
                List<Byte> checksumBytes = new ArrayList<>();
                byte frameTags = (byte) in.read();
                boolean isMessagePending = (frameTags & 1) != 0;
                boolean isRccRestart = (frameTags & 2) != 0;
                boolean isSdCardPresent = (frameTags & 4) != 0;
                boolean isSdCardFull = (frameTags & 8) != 0;
                boolean isNewDataloggerFilePresent = (frameTags & 16) != 0;
                boolean isDatalogSupported = (frameTags & 32) != 0;
                checksumBytes.add(frameTags);
                byte[] srcAddressBytes = new byte[4];
                for (int i = 0; i < 4; i++) {
                    byte b = (byte) in.read();
                    srcAddressBytes[i] = b;
                    checksumBytes.add(b);
                }
                int srcAddress = ByteBuffer.wrap(srcAddressBytes).order(ByteOrder.LITTLE_ENDIAN).getInt();
                byte[] dstAddressBytes = new byte[4];
                for (int i = 0; i < 4; i++) {
                    byte b = (byte) in.read();
                    dstAddressBytes[i] = b;
                    checksumBytes.add(b);
                }
                int dstAddress = ByteBuffer.wrap(dstAddressBytes).order(ByteOrder.LITTLE_ENDIAN).getInt();
                byte[] dataLengthBytes = new byte[2];
                for (int i = 0; i < 2; i++) {
                    byte b = (byte) in.read();
                    dataLengthBytes[i] = b;
                    checksumBytes.add(b);
                }
                short dataLength = ByteBuffer.wrap(dataLengthBytes).order(ByteOrder.LITTLE_ENDIAN).getShort();
                byte[] headerChecksumBytes = new byte[2];
                for (int i = 0; i < 2; i++) {
                    byte b = (byte) in.read();
                    headerChecksumBytes[i] = b;
                }
                List<Byte> calculatedHeaderChecksum = Service.calculateChecksum(checksumBytes);
                if (headerChecksumBytes[0] == calculatedHeaderChecksum.get(0) && headerChecksumBytes[1] == calculatedHeaderChecksum.get(1)) {
                    byte[] dataBytes = new byte[dataLength];
                    checksumBytes.clear();
                    for (int i = 0; i < dataLength; i++) {
                        byte b = (byte) in.read();
                        dataBytes[i] = b;
                        checksumBytes.add(b);
                    }
                    byte[] dataChecksumBytes = new byte[2];
                    dataChecksumBytes[0] = (byte) in.read();
                    dataChecksumBytes[1] = (byte) in.read();
                    List<Byte> calculatedDataChecksum = Service.calculateChecksum(checksumBytes);
                    if (dataChecksumBytes[0] == calculatedDataChecksum.get(0) && dataChecksumBytes[1] == calculatedDataChecksum.get(1)) {
                        ByteBuffer buffer = ByteBuffer.wrap(dataBytes).order(ByteOrder.LITTLE_ENDIAN);
                        byte dataFlagsByte = dataBytes[0];
                        boolean isError = (dataFlagsByte & 1) != 0;
                        boolean isResponse = (dataFlagsByte & 2) != 0;
                        byte serviceIdByte = dataBytes[1];
                        ObjectType objectType = ObjectType.getByCode(buffer.getShort(2));
                        int objectId = buffer.getInt(4);
                        PropertyId propertyId = PropertyId.getByCode(buffer.getShort(8));
                        if (this.request.getServiceId() != serviceIdByte) {
                            System.out.println("ServiceId of Response is not equals Request ServiceId.");
                        } else {
                            this.request.createResponse(isResponse, isError, isDatalogSupported, isNewDataloggerFilePresent, isSdCardFull, isSdCardPresent, isRccRestart, isMessagePending, srcAddress, dstAddress, objectType, propertyId, objectId, Arrays.copyOfRange(dataBytes, 10, dataBytes.length));
                        }
                    } else {
                        throw new OpenemsException("DataChecksum wrong");
                    }
                } else {
                    throw new OpenemsException("HeaderChecksum wrong");
                }
            } else {
                throw new OpenemsException("Stream start not found.");
            }
            in.close();
        } else {
            throw new OpenemsException("Connection is not open!");
        }
    } catch (IOException e) {
        throw new OpenemsException("IOException: " + e.getMessage());
    }
}