Re: [Discuss-gnuradio] gr-uhd timed command messages

[Nigel Steed]

Hi Martin,

I have put the following code into my block.


        d_rxCommand = pmt::make_dict();
             d_rxCommand = pmt::dict_add(d_rxCommand, pmt::mp("time"), 
pmt::mp(0.5));
             message_port_pub(pmt::mp("rx_freq_msg"), d_rxCommand );

It sends the message to the UHD Sink. But I get this error at run time:

        thread[thread-per-block[5]: <block gr uhd usrp source (1)>]: pmt_cdr: 
wrong_type : 1

Any ideas ? I am trying to auto step the frequencies, and currently have my own 
block to generate frequency messages which works fine. I am now trying to 
implement the time commands. Is there any other way to do it ?

Thanks,

Nigel



-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Martin Braun
Sent: Wednesday, March 2, 2016 9:24 PM
To: address@hidden
Subject: Re: [Discuss-gnuradio] gr-uhd timed command messages

When using messages, simply add a 'time' key to the command dictionary, and it 
will be set for the command you're calling. The time stamp value, is a 
long/double pair, for full and fractional time. Example:

{'freq': 1e9, 'time': (100, 0.1)}

If this is your message, it will set the frequency to 1 GHz at time 100.1.

Cheers,
Martin



On 03/02/2016 05:46 AM, Nigel Steed wrote:
> Hi,
> 
>  
> 
> Anyone know or managed to implement the time command using a message 
> port to the UHD Source Block ?
> 
>  
> 
> I believe time commands are not implemented in the latest GNURadio 
> gr-uhd ? Is that correct ?
> 
>  
> 
> Thanks,
> 
>  
> 
> Nigel
> 
> 
> 
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 


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