/**
* verifies response on availability of data
*
* @param response of heat pump
* @param request request defined for heat pump response
* @return Map of Strings with name and values
*/
public Map<String, String> parseRecords(final byte[] response, Request request)
throws StiebelHeatPumpException {
Map<String, String> map = new HashMap<String, String>();
logger.debug("Parse bytes: {}", DataParser.bytesToHex(response));
if (response.length < 2) {
logger.error(
"response does not have a valid length of bytes: {}", DataParser.bytesToHex(response));
return map;
}
// parse response and fill map
for (RecordDefinition recordDefinition : request.getRecordDefinitions()) {
try {
String value = parseRecord(response, recordDefinition);
logger.debug(
"Parsed value {} -> {} with pos: {} , len: {}",
recordDefinition.getName(),
value,
recordDefinition.getPosition(),
recordDefinition.getLength());
map.put(recordDefinition.getName(), value);
} catch (StiebelHeatPumpException e) {
continue;
}
}
return map;
}
/**
* parses a single record
*
* @param response of heat pump
* @param RecordDefinition that shall be used for parsing the heat pump response
* @return string value of the parse response
* @throws StiebelHeatPumpException
*/
public String parseRecord(byte[] response, RecordDefinition recordDefinition)
throws StiebelHeatPumpException {
try {
if (response.length < 2) {
logger.error(
"response does not have a valid length of bytes: {}", DataParser.bytesToHex(response));
throw new StiebelHeatPumpException();
}
ByteBuffer buffer = ByteBuffer.wrap(response);
short number = 0;
byte[] bytes = null;
switch (recordDefinition.getLength()) {
case 1:
bytes = new byte[1];
System.arraycopy(response, recordDefinition.getPosition(), bytes, 0, 1);
number = Byte.valueOf(buffer.get(recordDefinition.getPosition()));
break;
case 2:
bytes = new byte[2];
System.arraycopy(response, recordDefinition.getPosition(), bytes, 0, 2);
number = buffer.getShort(recordDefinition.getPosition());
break;
}
if (recordDefinition.getBitPosition() > 0) {
int returnValue = getBit(bytes, recordDefinition.getBitPosition());
return String.valueOf(returnValue);
}
if (recordDefinition.getScale() != 1.0) {
double myDoubleNumber = number * recordDefinition.getScale();
myDoubleNumber = Math.round(myDoubleNumber * 100.0) / 100.0;
String returnString = String.format("%s", myDoubleNumber);
return returnString;
}
return String.valueOf(number);
} catch (Exception e) {
logger.error(
"response {} could not be parsed for record definition {} ",
DataParser.bytesToHex(response),
recordDefinition.getName());
throw new StiebelHeatPumpException();
}
}
@Test
public void testParseByteToHex() throws StiebelHeatPumpException {
byte[] response =
new byte[] {
(byte) 0x01,
(byte) 0x00,
(byte) 0xb5,
(byte) 0xfd,
(byte) 0x01,
(byte) 0xb6,
(byte) 0xff,
(byte) 0x10,
(byte) 0x03
};
String hex = DataParser.bytesToHex(response);
Assert.assertEquals("(00)01 00 B5 FD (04)01 B6 FF 10 (08)03 ", hex);
}
