ConfigDeviceStateStore.java

package example;

import java.math.BigInteger;
import java.util.HashMap;
import java.util.Map;
import me.legrange.panstamp.DeviceStateStore;
import me.legrange.panstamp.Register;

/**
 *
 * @since 1.0
 * @author Gideon le Grange https://github.com/GideonLeGrange
 */
public class ConfigDeviceStateStore implements DeviceStateStore {

 ConfigDeviceStateStore() {
 // NB NB NB 
 // hard code your panstamp registers here
 // example: I want to set register 0 for device 3 to 00010004 which means "product code for device 3 is temp sensor"
 data.put(makeKey(3,0), new byte[]{0,0,0,1,0,0,0,4});
 }
 
 // assume productCodes is filled in from the config file by the application
 private final Map<String, byte[]> data = new HashMap<>();

 @Override
 public boolean hasRegisterValue(Register reg) {
 String key = makeKey(reg);
 boolean res = data.containsKey(key);
 System.out.printf("hasRegisterValue(%d for %d) == %b\n", reg.getId(), reg.getDevice().getAddress(), res);
 return res;
 }

 @Override
 public byte[] getRegisterValue(Register reg) {
 byte val[] = data.getOrDefault(makeKey(reg), new byte[]{});
 System.out.printf("getRegisterValue(%d for %d) == %s\n", reg.getId(), reg.getDevice().getAddress(), formatBytes(val));
 return val;
 }

 @Override
 public void setRegisterValue(Register reg, byte[] value) {
 System.out.printf("setRegisterValue(%d for %d) = %s\n", reg.getId(), reg.getDevice().getAddress(), formatBytes(value));
 data.put(makeKey(reg), value);
 }
 
 private String makeKey(Register reg) {
 return makeKey(reg.getDevice().getAddress(), reg.getId());
 }
 private String makeKey(int addr, int id) {
 return String.format("%d=>%d", addr, id);
 }

 
 private String formatBytes(byte val[]) {
 return new BigInteger(val).toString(16);
 }
}