Read data from Data object type Array

By KostaG , 18 July, 2024
Forums
General discussion

Hi,

I am having trouble trying to decode, from client-side, a Data object with Array type. I managed to read the Data object but I don't know how to retrieve it's values. Can you help me with this problem?

Thank you,
BR.

Kurumi

1 year 10 months ago

Hi,

You didn't tell what programming language you are using, but it's already converted from bytes to variant values.

You can loop the array something like this:

GXDLMSData data = new GXDLMSData();
//Read the value.
foreach(var it in (GXArray) data.Value)
{
//Print value.
}

BR,
Mikko

KostaG

1 year 10 months ago

Sorry, I forgot about the language. I'm programming in ANSI C. I do the following in server-side to store the data in the GXArray in the preRead method:

e->value.vt = DLMS_DATA_TYPE_OCTET_STRING;
e->byteArray = 1;
e->handled = 1;
e->skipMaxPduSize = 1;

bb_setUInt8(e->value.byteArr, DLMS_DATA_TYPE_ARRAY);
hlp_setObjectCount(25 * 2, e->value.byteArr);
for (uint16_t i = 0; i < 25; i++) {
bb_setUInt8(e->value.byteArr, DLMS_DATA_TYPE_FLOAT32);
bb_setFloat(e->value.byteArr, data_buffer[i]);
}

I checked using GXDLMSDIrector that I'm writing correctly the data values to the Array. I tried what you proposed but it's not working.

Any ideas of what could be the problem here?

BR.