Re: [taste-users] ASN.1 encoding

[Maxime Perrotin <maxime.perrotin@xxxxxxx>]

Hi Michael,

Assuming your data model is in DataView.asn and the ACN file in DataView.acn, type:

$ asn1.exe -icdAcn icd.html DataView.asn  DataView.acn

This should generate the HTML file

Best regards
Maxime

On 10/18/2013 11:28 AM, Michael.Dumke@xxxxxx wrote:

Hi Maxime,

thanks, that was exactly what was going wrong. But I could not get the ICD with the compiler flag to generate. Or was the "-icdAcn File.html" not for the compiler?

Best regards,

Michael

-----Original Message-----
From: Maxime Perrotin [mailto:maxime.perrotin@xxxxxxx] 
Sent: Friday, October 18, 2013 10:32 AM
To: Dumke, Michael; George Mamais; taste-users@xxxxxxxxxxxxxxxxxxx 
Subject: Re: [taste-users] ASN.1 encoding

Hi Michael,

I think I understand the problem. Look at the encoding layout of your message:

ACN encoding

When using PER the boolean value is not encoded on one BYTE but on one BIT. This is probably the reason by the decoding does not appear as you expect.

If you want to encode the boolean with one byte and the value you want, you need to specify it in your ACN model:


 MEAS[] {
	att [], 
	rate [], 
	simctrl [] {
		simstart [true-value '00000001'B], 
		parm [encoding IEEE754-1985-64, endianness little] 
	}
}

I think this should solve your issue.

Regarding the GCC options, it is possible that you set compiler or linker flags per function, in the Interface view.
If you double-click on a function, and go to the "Functional States" or "Context Parameters" tab (depending on your version) you can add flags:

compiler options

This is particularly useful when using simulink models. 

Regarding the sizeof of the struct, you don't have to do anything. GCC is adding padding bytes so that data are aligned on 32 or 64 bits (allowing faster access at runtime). 
Look here for more explanations: http://en.wikipedia.org/wiki/Data_structure_alignment

I hope that helps and solves your issue.

Best regards,
Maxime

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