public static function getValue($dif, $vif, $data)
{
if ($vif != 0x0) {
$vifNoExt = $vif & 0x7f;
switch ($vifNoExt) {
// E110 110n Time Point
// n = 0 date
// n = 1 time & date
// data type G
// data type F
case $vifNoExt >= 0x6c && $vifNoExt <= 0x6d:
if ($vif & 0x1) {
// Data length should be 4 bytes.
if (count($data) < 4) {
return "Invalid number of bytes to determine date and time!";
}
return mbus_utils::data_date_time_decode($data);
} else {
return "NYI - Time Point (date)";
}
break;
// This is the units of the value. Not the actual value! Still need to get value in this record.
// Tricky eh, see 6.3 plain text VIF
// This is the units of the value. Not the actual value! Still need to get value in this record.
// Tricky eh, see 6.3 plain text VIF
case $vifNoExt == 0x7c:
if ($data_length <= 0xbf) {
return mbus_utils::data_str_decode($data);
}
break;
}
}
switch ($dif & 0xf) {
case 0x0:
// no data
return "No Data";
break;
case 0x1:
// 1 byte integer (8 bit)
// 1 byte integer (8 bit)
case 0x2:
// 2 byte integer (16 bit)
// 2 byte integer (16 bit)
case 0x3:
// 3 byte integer (24 bit)
// 3 byte integer (24 bit)
case 0x4:
// 4 byte integer (32 bit)
// 4 byte integer (32 bit)
case 0x6:
// 6 byte integer (48 bit)
// 6 byte integer (48 bit)
case 0x7:
// 8 byte integer (64 bit)
return mbus_utils::data_int_decode($data);
break;
case 0x9:
// 2 digit BCD (8 bit)
// 2 digit BCD (8 bit)
case 0xa:
// 4 digit BCD (16 bit)
// 4 digit BCD (16 bit)
case 0xb:
// 6 digit BCD (24 bit)
// 6 digit BCD (24 bit)
case 0xc:
// 8 digit BCD (32 bit)
// 8 digit BCD (32 bit)
case 0xe:
// 12 digit BCD
return mbus_utils::data_bcd_decode($data);
break;
case 0xe:
// Special Functions
return "Special Functions";
break;
case 0xd:
// variable length ASCII
if ($data_length <= 0xbf) {
return mbus_utils::data_str_decode($data);
break;
}
// FALLTHROUGH
// FALLTHROUGH
default:
return "Unknown DIF (0x" . dechex($dif) . ")";
break;
}
return "";
}
