raw values (scaled) of registers and of the registers inside profiles generic

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By wildstray , 17 December, 2021
Forums
Gurux.DLMS

Hi Mikko,
is there a better way to obtain pure values compared to mine? It "just works" but probably there are already helper functions for this... especially for scalers... is there "something automatic" in C as like as the Python version?

(... here is the com_reads of index 2 and 3 of gxobject *it... )

case DLMS_OBJECT_TYPE_EXTENDED_REGISTER:
{
gxExtendedRegister *reg = (gxExtendedRegister*)it;
Serial.println(reg->value.vt);
switch(reg->value.vt) {
case DLMS_DATA_TYPE_INT32:
{
Serial.println(reg->unit);
Serial.println(pow((float)10, reg->scaler));
Serial.println(reg->value.lVal * pow((float)10, reg->scaler));
break;
}
case DLMS_DATA_TYPE_UINT32:
{
Serial.println(reg->unit);
Serial.println(pow((float)10, reg->scaler));
Serial.println(reg->value.ulVal * pow((float)10, reg->scaler));
break;
}
}
break;
}

At now just for debugging, then I need to cast/round in uint64_t plus float64 to store them in a cache.

Moreover, I need also to read the registers of gxProfileGeneric. I successfully read the profile itself and I can print the content thru obj_toString. It's very useful for debug purposes, but I need to read raw values of the registers. How can I do?

TIA!
BR,
Andrea

Kurumi

4 years 5 months ago

Hi Andrea,

In ANSI C you need to do everything by yourself. Automatic scaling is not used in ANSI C because of memory usage. But you don't need to check the data type. You can use var_toInteger to get the integer value. Something like this:

Serial.println(var_toInteger(&reg->value) * pow((float)10, reg->scaler));

BR,
Mikko

wildstray

4 years 5 months ago

Hi Mikko,
thank you, in that way is much more comfortable and readble! But I notice it doesn't exists a "var_toFloat()" :-( I'll going to write it on the bases of var_toInteger().
And excuse me again, and what about reading the values inside gxProfileGeneric? I saw it's a gxArray, but how to find the indexes? (the correspondence between gxArray index and LNs of profile registers).

BR,
Andrea