static double radio_channel_to_frequency(int channel) {
return 434.550 + channel * 0.100;
}
+
+ static int[] ParseHex(String line) {
+ String[] tokens = line.split("\\s+");
+ int[] array = new int[tokens.length];
+
+ for (int i = 0; i < tokens.length; i++)
+ try {
+ array[i] = Integer.parseInt(tokens[i], 16);
+ } catch (NumberFormatException ne) {
+ return null;
+ }
+ return array;
+ }
+
+ static int checksum(int[] data, int start, int length) {
+ int csum = 0x5a;
+ for (int i = 0; i < length; i++)
+ csum += data[i + start];
+ return csum & 0xff;
+ }
}