public ws_record(string name, int pos, ws_types wsType, double scale) : this()
{
this.name = name;
this.pos = pos;
this.ws_type = wsType;
this.scale = scale;
}
int CWS_decode(byte[] raw, ws_types ws_type, float scale, float offset, out string result)
{
int b = Convert.ToInt32(-(Math.Log(scale) + 0.5));
int i, m = 0, n = 0;
float fresult;
if (b < 1)
{
b = 1;
}
//if (!result) return 0;
//else *result = '\0';
result = "";
switch (ws_type)
{
case ws_types.ub:
m = 1;
fresult = raw[0] * scale + offset;
//n = sprintf(result, "%.*f", b, fresult);
String.Format(result, "%.*f", b, fresult);
break;
case ws_types.sb:
m = 1;
fresult = raw[0] & 0x7F;
if (Convert.ToBoolean(raw[0] & 0x80)) // Test for sign bit
{
fresult -= fresult; //negative value
}
fresult = fresult * scale + offset;
//n = sprintf(result, "%.*f", b, fresult);
String.Format(result, "%.*f", b, fresult);
break;
case ws_types.us:
m = 2;
fresult = CWS_unsigned_short(raw) * scale + offset;
//n = sprintf(result, "%.*f", b, fresult);
String.Format(result, "%.*f", b, fresult);
break;
case ws_types.ss:
m = 2;
fresult = CWS_signed_short(new ArraySegment <byte>(raw)) * scale + offset;
//n = sprintf(result, "%.*f", b, fresult);
String.Format(result, "%.*f", b, fresult);
break;
case ws_types.dt:
{
char year, month, day, hour, minute;
year = (char)CWS_bcd_decode(raw[0]);
month = (char)CWS_bcd_decode(raw[1]);
day = (char)CWS_bcd_decode(raw[2]);
hour = (char)CWS_bcd_decode(raw[3]);
minute = (char)CWS_bcd_decode(raw[4]);
m = 5;
//n = sprintf(result, "%4d-%02d-%02d %02d:%02d", year + 2000, month, day, hour, minute);
String.Format(result, "%4d-%02d-%02d %02d:%02d", year + 2000, month, day, hour, minute);
}
break;
case ws_types.tt:
m = 2;
//n = sprintf(result, "%02d:%02d", CWS_bcd_decode(raw[0]), CWS_bcd_decode(raw[1]));
String.Format(result, "%02d:%02d", CWS_bcd_decode(raw[0]), CWS_bcd_decode(raw[1]));
break;
case ws_types.pb:
m = 1;
//n = sprintf(result, "%02x", raw[0]);
String.Format(result, "%02x", raw[0]);
break;
case ws_types.wa:
m = 3;
// wind average - 12 bits split across a byte and a nibble
fresult = raw[0] + ((raw[2] & 0x0F) * 256);
fresult = fresult * scale + offset;
//n = sprintf(result, "%.*f", b, fresult);
String.Format(result, "%.*f", b, fresult);
break;
case ws_types.wg:
m = 3;
// wind gust - 12 bits split across a byte and a nibble
fresult = raw[0] + ((raw[1] & 0xF0) * 16);
fresult = fresult * scale + offset;
//n = sprintf(result, "%.*f", b, fresult);
String.Format(result, "%.*f", b, fresult);
break;
case ws_types.dp:
m = 1; //error checking for delay
// Scale outside temperature and calculate dew point
fresult = (float)CWS_dew_point(raw, scale, offset);
//n = sprintf(result, "%.*f", b, fresult);
String.Format(result, "%.*f", b, fresult);
break;
default:
//MsgPrintf(0, "CWS_decode: Unknown type %u\n", ws_type);
break;
}
for (i = 0; i < m; ++i)
{
if (raw[i] != 0xFF)
{
return(n);
}
}
if (Convert.ToBoolean(m))
{
//MsgPrintf(0, "CWS_decode: invalid value at 0x%04X\n", raw);
//sprintf(result, "--.-");
String.Format(result, "--.-");
n = 0;
}
return(n);
}
