private static void parse_status_response(Bytes response, Pod pod)
{
pod.state_last_updated = DateTime.UtcNow;
var s0 = response[0];
uint s1 = response.DWord(1);
uint s2 = response.DWord(5);
parse_delivery_state(pod, (byte)(s0 >> 4));
pod.state_progress = (PodProgress)(s0 & 0xF);
pod.radio_message_sequence = (int)(s1 & 0x00007800) >> 11;
pod.insulin_delivered = ((s1 & 0x0FFF8000) >> 15) * 0.05m;
pod.insulin_canceled = (s1 & 0x000007FF) * 0.05m;
pod.state_faulted = ((s2 >> 31) != 0);
pod.state_alert = (byte)((s2 >> 23) & 0xFF);
pod.state_active_minutes = (uint)((s2 & 0x007FFC00) >> 10);
pod.insulin_reservoir = (s2 & 0x000003FF) * 0.05m;
}
private static void parse_version_response(Bytes response, Pod pod)
{
bool lengthyResponse = false;
pod.state_last_updated = DateTime.UtcNow;
int i = 1;
if (response.Length == 27)
{
pod.id_version_unknown_7_bytes = response.ToArray(i, i + 7);
i += 7;
lengthyResponse = true;
}
var mx = response.Byte(i++);
var my = response.Byte(i++);
var mz = response.Byte(i++);
pod.id_version_pm = $"{mx}.{my}.{mz}";
var ix = response.Byte(i++);
var iy = response.Byte(i++);
var iz = response.Byte(i++);
pod.id_version_pi = $"{ix}.{iy}.{iz}";
pod.id_version_unknown_byte = response.Byte(i++);
pod.state_progress = (PodProgress)(response.Byte(i++) & 0x0F);
pod.id_lot = response.DWord(i);
pod.id_t = response.DWord(i + 4);
i += 8;
if (!lengthyResponse)
{
var rb = response.Byte(i++);
pod.radio_low_gain = rb >> 6;
pod.radio_rssi = rb & 0b00111111;
pod.radio_address = response.DWord(i);
}
else
{
pod.radio_address = response.DWord(i);
}
}
public static Packet parse(Bytes data)
{
if (data.Length < 5)
{
return(null);
}
var crc_computed = CrcUtil.Crc8(data.Sub(0, data.Length - 1).ToArray());
var crc = data[data.Length - 1];
if (crc != crc_computed)
{
return(null);
}
var address = data.DWord(0);
var d4 = data.Byte(4);
var type = (RadioPacketType)(d4 & 0b11100000);
var sequence = d4 & 0b00011111;
var body = data.Sub(5);
return(new Packet(address, type, sequence, body));
}