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passing hex data to .NET

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gujax
gujax on 27 Sep 2012
Hi, This is quite basic but I am missing it.
An object in C# has to be passed a value, which is an operational code '0x20'.
This code is being sent to an instrument. I understand that the instrument can only decipher binary formatted numbers.
I am using .NET interface for accessing the C# code which is interfacing with the instrument. However, I am unable to set the instrument to the above value.
If the object is 'pkt' whose property is 'opcode' and the 'opcode' needs a value of 0x20 this is what I tried:
pkt.opcode=sscanf('0x20','%x'); This did not work.
Then I tried pkt.opcode=hex2dec('0x20') - not happy.
I tried pkt.opcode=20 - not happy.
Tried pkt.opcode=00100000 - again no results. (A light is supposed to switch on when this number is transferred).
The instrument manual says that the opcode value is 0x20 and the return type is uint32 (it has both read and write enabled).
This is now really confusing. Does it mean it needs an integer decimal value? If that is the case is my first step correct? Thanks

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Accepted Answer

Walter Roberson
Walter Roberson on 27 Sep 2012
Edited: Walter Roberson on 27 Sep 2012
Try
pkt.opcode = uint8(hex2dec('20'));

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More Answers (1)

gujax
gujax on 28 Sep 2012
Thanks, it worked!

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