From c742d3b3ff99e43e73b4ae3ac0a7aa9b9cd41548 Mon Sep 17 00:00:00 2001
From: Ed Gonzalez <ed.gonzalez@flex-radio.com>
Date: Mon, 24 Aug 2015 15:05:03 -0500
Subject: [PATCH] Add mechanism that allows the waveform to know when the radio
 is unkeying.

This is needed so that DSTAR can encode it's end bits.
---
 DSP_API/SmartSDR_Interface/sched_waveform.c   | 9 +++++++++
 DSP_API/SmartSDR_Interface/sched_waveform.h   | 1 +
 DSP_API/SmartSDR_Interface/status_processor.c | 7 +++++++
 3 files changed, 17 insertions(+)

diff --git a/DSP_API/SmartSDR_Interface/sched_waveform.c b/DSP_API/SmartSDR_Interface/sched_waveform.c
index 6e87769..d0bffea 100644
--- a/DSP_API/SmartSDR_Interface/sched_waveform.c
+++ b/DSP_API/SmartSDR_Interface/sched_waveform.c
@@ -201,6 +201,9 @@ static int _dv_serial_fd = 0;
 static GMSK_DEMOD _gmsk_demod = NULL;
 static GMSK_MOD   _gmsk_mod = NULL;
 static DSTAR_MACHINE _dstar = NULL;
+static _end_of_transmission = FALSE;
+
+
 
 #define FREEDV_NSAMPLES 160
 
@@ -345,6 +348,12 @@ void sched_waveform_setFD(int fd)
     _dv_serial_fd = fd;
 }
 
+void sched_waveform_setEndOfTX(BOOL end_of_transmission)
+{
+    _end_of_transmission = TRUE;
+}
+
+
 static void* _sched_waveform_thread(void* param)
 {
     int 	nout;
diff --git a/DSP_API/SmartSDR_Interface/sched_waveform.h b/DSP_API/SmartSDR_Interface/sched_waveform.h
index f62ec01..adb614f 100644
--- a/DSP_API/SmartSDR_Interface/sched_waveform.h
+++ b/DSP_API/SmartSDR_Interface/sched_waveform.h
@@ -49,4 +49,5 @@ void sched_waveform_setOwnCall2(uint32 slice , const char * owncall2 );
 
 void sched_waveform_sendStatus(uint32 slice);
 void sched_waveform_setFD(int fd);
+void sched_waveform_setEndOfTX(BOOL end_of_transmission);
 #endif /* SCHED_WAVEFORM_H_ */
diff --git a/DSP_API/SmartSDR_Interface/status_processor.c b/DSP_API/SmartSDR_Interface/status_processor.c
index 85c87a0..62d63e9 100644
--- a/DSP_API/SmartSDR_Interface/status_processor.c
+++ b/DSP_API/SmartSDR_Interface/status_processor.c
@@ -37,6 +37,7 @@
 
 #include "common.h"
 #include "traffic_cop.h"
+#include "sched_waveform.h"
 
 static void _handle_status(char* string)
 {
@@ -140,6 +141,12 @@ static void _handle_status(char* string)
                 {
                     output(ANSI_MAGENTA "we are receiving\n");
                 }
+                else if ( strncmp(state, "UNKEY_REQUESTED", strlen("UNKEY_REQUESTED")) == 0 )
+                {
+                    output(ANSI_MAGENTA "unkey requested - sending end bits\n");
+                    sched_waveform_setEndOfTX(TRUE);
+                }
+
             }
         }