From: c vw <dl1ycf@darc.de>
Date: Thu, 9 Jan 2020 17:44:06 +0000 (+0100)
Subject: new implementation of canTransmit()
X-Git-Url: https://git.rkrishnan.org/Site/listings/$sch_link?a=commitdiff_plain;h=9c3c1c3e9747c44faa85580d9547ffb600f061ba;p=pihpsdr.git

new implementation of canTransmit()
---

diff --git a/frequency.c b/frequency.c
index 9505fbd..149202f 100644
--- a/frequency.c
+++ b/frequency.c
@@ -510,11 +510,86 @@ g_print("getBand for %lld is %s (%d)\n",frequency,info->info,info->band);
     return result;
 }
 
+///////////////////////////////////////////////////////
+//                                                   //
+//   New, self-contained  version of canTransmit()   //
+//                                                   //
+///////////////////////////////////////////////////////
+
+#include "radio.h"
+#include "vfo.h"
+#include "band.h"
+
 int canTransmit() {
-    int result=0;
-    if(info!=0) {
-        result=info->transmit;
+    int result;
+    long long txfreq, flow, fhigh;
+    int txb, txvfo, txmode;
+    BAND *txband;
+    int i;
+
+    //
+    // If there is no transmitter, we cannot transmit
+    //
+    if (!can_transmit) return 0;
+
+    //
+    // In the code canTransmit() is always ORed with tx_out_of_band, 
+    // but this should be done in ONE PLACE (here)
+    //
+    if (tx_out_of_band) return 1;
+
+    txvfo=get_tx_vfo();
+    txb=vfo[txvfo].band;
+
+    //
+    // See if we have a band
+    //
+    if (txb == bandGen) return 0;
+
+    //
+    // Determine the edges of our band
+    // and the edges of our TX signal
+    //
+    txband=band_get_band(vfo[txvfo].band);
+    txfreq=get_tx_freq();
+    txmode=get_tx_mode();
+
+    switch (txmode) {
+      case modeCWU:
+	flow = fhigh = cw_is_on_vfo_freq ? txfreq : txfreq + cw_keyer_sidetone_frequency;
+	break;
+      case modeCWL:
+	flow = fhigh = cw_is_on_vfo_freq ? txfreq : txfreq - cw_keyer_sidetone_frequency;
+	break;
+      default:
+	flow = txfreq + transmitter->filter_low;
+	fhigh= txfreq + transmitter->filter_high;
+	break;
+    }
+
+    if (txb == band60) {
+      //
+      // For 60m band, ensure signal is within one of the "channels"
+      //
+      result=0;
+      for(i=0;i<channel_entries;i++) {
+        long long low_freq=band_channels_60m[i].frequency-(band_channels_60m[i].width/(long long)2);
+        long long hi_freq=band_channels_60m[i].frequency+(band_channels_60m[i].width/(long long)2);
+//fprintf(stderr,"TRY CHANNEL: low=%lld high=%lld SIGNAL: low=%lld high=%lld\n", low_freq, hi_freq, flow, fhigh);
+        if(flow>=low_freq && fhigh<=hi_freq) {
+//fprintf(stderr,"60m channel OK: chan=%d flow=%lld fhigh=%lld\n", i, flow, fhigh);
+	  result = 1;
+          break;
+        }
+      }
+//fprintf(stderr,"60m channel NOT FOUND: flow=%lld fhigh=%lld\n", flow, fhigh);
+    } else {
+      //
+      // For other bands, return true if signal within band
+      //
+      result = flow >= txband->frequencyMin && fhigh <= txband->frequencyMax;
     }
+//fprintf(stderr,"CANTRANSMIT: low=%lld  high=%lld transmit=%d\n", flow, fhigh, result);
     return result;
 }
 
diff --git a/vfo.c b/vfo.c
index 25cceac..598900f 100644
--- a/vfo.c
+++ b/vfo.c
@@ -1049,39 +1049,6 @@ void vfo_update() {
         cairo_set_source_rgb(cr, 1.0, 1.0, 0.0);
         cairo_show_text(cr, temp_text);
 
-       
-        long long txfreq;
-        int txlow, txhigh;
-
-        if (can_transmit) {
-          txfreq = (txvfo == 0) ? af : bf;
-          if (transmitter->xit_enabled) txfreq += transmitter->xit;
-	  //
-	  // In CW modes, the signal is generated explicitly (without WDSP),
-	  // so we can assume a zero-width filter. Note that the CW signal
-	  // can be on the VFO frequency or offset by the side tone freq.
-	  //
-          switch (transmitter->mode) {
-	    case modeCWU:
-              txlow = txhigh = cw_is_on_vfo_freq ? 0 : cw_keyer_sidetone_frequency;
-	      break;
-	    case modeCWL:
-              txlow = txhigh = cw_is_on_vfo_freq ? 0 : -cw_keyer_sidetone_frequency;
-	      break;
-	    default:
-              txlow =transmitter->filter_low;
-              txhigh=transmitter->filter_high;
-	    break;
-	  }
-	} else {
-	  //
-	  // If there is no transmitter, use VFO frequency of active receiver
-	  //
-	  txfreq = (id == 0) ? af : bf;
-	  txlow = 0;
-	  txhigh =0;
-	}
-        getFrequencyInfo(txfreq, txlow, txhigh);
 /*
         cairo_move_to(cr, (my_width/4)*3, 50);
         cairo_show_text(cr, getFrequencyInfo(af));