[hpsdr] Manual transmitter control on CW mode

[Roger Rehr W3SZ]

Hi All,

This is a very belated answer to the problem of not being able to defeat 
semi-break in CW in PowerSDR.  Hopefully others will find it useful.  
For a couple of months I have been using this solution with a Hermes 
unit that I am using as an IF radio. The modification eliminates CW semi 
break in.

I needed to do this for an EME installation where I am switching 
sequentially several radios, TWT amplifier, two LNAs, two waveguide 
switches, etc.  Of course I have tried to make everything "failsafe" 
with the sequencing but still it is much better to avoid inadvertent 
brief activations of the transmit mode when the CW key is accidentally 
bumped when the system is not in transmit mode.

The modified code works here as intended with no apparent problems.  
However, I am not a coding expert, so there may be problems with the 
code modifications that I made of which I am unaware.  Also, there 
likely are better ways of doing this.  But since no answers / help 
appeared here for Bill in the 3 years since the question was asked, and 
since I needed the same solution,  I did what I could and this is a 
solution that works for me here.

I just made very simple modifications to the PowerSDR console.cs file 
and to the Hermes firmware file.  I also made a trivial modification to 
titlebar.cs file so that I could tell at a glance whether or not I was 
running the modified PowerSDR software.  I use my installation only with 
Hermes for CW and Digital EME so I can't comment on suitability for 
other use conditions.

Here are the diffs for each file:


Firmware Diff based on Hermes-v3.3 code:

2248c2248,2250
< assign FPGA_PTT = (IF_Rx_ctrl_0[0] | CW_PTT | clean_PTT_in); // 
IF_Rx_ctrl_0 only updated when we get correct sync sequence. CW_PTT is 
used when internal CW is selected
---
 > assign FPGA_PTT = (IF_Rx_ctrl_0[0] | clean_PTT_in); // IF_Rx_ctrl_0 
only updated when we get correct sync sequence.
 >
 > //w3sz assign FPGA_PTT = (IF_Rx_ctrl_0[0] | CW_PTT | clean_PTT_in); 
// IF_Rx_ctrl_0 only updated when we get correct sync sequence. CW_PTT 
is used when internal CW is selected


PowerSDR console.cs Diff based on PowerSDR OpenHPSDR mRx PS v 
3.5.0(11/9/19):

33099c33099
<                     cw_ptt = CWInput.KeyerPTT;
---
 >              //w3sz       cw_ptt = CWInput.KeyerPTT;
33123c33123
<                             current_ptt_mode = PTTMode.CW;
---
 >                             current_ptt_mode = PTTMode.NONE;
33125,33130c33125,33132
<                             chkMOX.Checked = true;
<                             if (!mox)
<                             {
<                                 chkPower.Checked = false;
<                                 return;
<                             }
---
 >                         //w3sz    current_ptt_mode = PTTMode.CW;
 >
 >                      //w3sz       chkMOX.Checked = true;
 >                     //w3sz        if (!mox)
 >                     //w3sz        {
 >                     //w3sz            chkPower.Checked = false;
 >                     //w3sz            return;
 >                     //w3sz        }
33198c33200
<                                     chkMOX.Checked = false;
---
 >                   //w3sz                  chkMOX.Checked = false;


PowerSDR titlebar.cs Diff based on PowerSDR OpenHPSDR mRx PS v 
3.5.0(11/9/19):

43c43
<             string s = "PowerSDR™ OpenHPSDR";
---
 >             string s = "PowerSDR™ OpenHPSDR -NO CW PTT- ";


-----------------------------------

73,

Roger Rehr
W3SZ


>/On May 26, 2017, at 3:07 PM, Bill Beam <wbeam at gci.net 
<http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org>> wrote: />//>/To be more specific: />/There is a check box to enable semi break in. It has no effect. />/The program is stuck with break in always enabled. />/This appears to be an issue with PowerSDR. />/73, NL7F />//>/On Thu, 25 May 2017 18:37:39 -0800, Bill Beam wrote: />//>>/The point made was that it is not possible to disable CW break-in. 
Whenever paddle is touched the rig />>/goes into transmit. PTT functions do work OK. />//>>/I find this with my 200D, PowerSDR v 3.3.17, firmware 4.9. I am unable 
to find a way to disable CW break-in. />//>>/73, NL7F />//

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