Can not read string object

By plotnikov.av , 18 April, 2023
Forums
Gurux.DLMS

Hi.
Using client example from ANSI C can't read OBIS object with string value:

if ((ret = cl_read(&connection->settings, object, attributeOrdinal, &data)) != 0 ||
(ret = com_readDataBlock(connection, &data, &reply)) != 0 ||
(ret = cl_updateValue(&connection->settings, object, attributeOrdinal, &reply.dataValue)) != 0)

This code works well with integers returning right value in reply.dataValue but it is empty if reading string.

I can't find what I'm doing wrong.
Thanks for help.

Alex

plotnikov.av

3 years 1 month ago

In addition, Octet String works well, but String UTF8 does not.
Is it a bug or my misunderstanding.

Thanks,
Alex

plotnikov.av

3 years 1 month ago

Well.

getUtfString():
...
// If there is not enough data available.
if (buff->size - buff->position < (uint16_t)(2 * len))

this condition doesn't work for UTF8 because 2-byte symbol (2*len) is for specific fonts only, numbers and Latin letters are 1-byte symbols.
Anyway, len reflects actual size even for UTF8 and

if (buff->size - buff->position < len)

should work well. Isn't it?

Alex

Kurumi

3 years 1 month ago

Hi Alex,

You are right. This is fixed and tests are on progress. The new version is released today.

BR,
Mikko