From d45189798c160cee329b7c59636b0caf538244f6 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Wed, 31 Jan 2024 23:18:07 +0100
Subject: DART-70: get VOX and CW working

---
 sw/dart-70/src/state.rs | 33 ++++++++++++---------------------
 1 file changed, 12 insertions(+), 21 deletions(-)

(limited to 'sw/dart-70/src/state.rs')

diff --git a/sw/dart-70/src/state.rs b/sw/dart-70/src/state.rs
index d5d4bf3..ffde88a 100644
--- a/sw/dart-70/src/state.rs
+++ b/sw/dart-70/src/state.rs
@@ -1,5 +1,6 @@
 pub const VHF_BAND_EDGE : u32 = 70_000_000;
 pub const VHF_INITIAL_VFO : u32 = 70_200_000;
+pub const VFO_FREQ_ERROR : i32 = 2_000; // measured at 70.2 MHz
 // Values below are measured with the assembled XTAL filter
 pub const XTAL_FILT_FREQ : u32 = 11_057_500;
 pub const BFO_LSB : u32 = XTAL_FILT_FREQ + 1_400;
@@ -38,6 +39,7 @@ pub enum Mode {
     USB,
     CustomShift(u32),
     CW(CWMode),
+    DIG,
 }
 
 #[derive(Clone, PartialEq, Eq)]
@@ -48,6 +50,8 @@ pub enum SequenceState {
     TxSSB,
     SwitchingCW,
     TxCW,
+    SwitchingDIG,
+    TxDIG,
 }
 
 impl SequenceState {
@@ -89,19 +93,12 @@ impl State {
     }
 
     pub fn bfo(&self) -> u32 {
-        if self.send_tone {
-            0
-        }
-        else {
-            match self.mode {
-                Mode::LSB => BFO_LSB,
-                Mode::USB => BFO_USB,
-                Mode::CustomShift(fs) => fs,
-                Mode::CW(_) => match self.sequence_state {
-                    SequenceState::SwitchingCW | SequenceState::TxCW => 0,
-                    _ => BFO_CW,
-                },
-            }
+        match self.mode {
+            Mode::LSB => BFO_LSB,
+            Mode::USB => BFO_USB,
+            Mode::CustomShift(fs) => fs,
+            Mode::CW(_) => BFO_CW,
+            Mode::DIG => BFO_USB,
         }
     }
 
@@ -113,14 +110,8 @@ impl State {
     }
 
     pub fn vfo(&self) -> u32 {
-        let cw_offset = match self.sequence_state {
-            SequenceState::SwitchingCW | SequenceState::TxCW => 500,
-            _ => 0,
-        };
-
-        let vfo = (self.vhf_qrg() - self.bfo()) as i32 +
-            if self.sequence_state.apply_rit() { self.rit } else { 0 } +
-                cw_offset;
+        let vfo = (self.vhf_qrg() - self.bfo()) as i32 + VFO_FREQ_ERROR +
+            if self.sequence_state.apply_rit() { self.rit } else { 0 };
         vfo as u32
     }
 }
-- 
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