From 336048a49af662684a76871a4974f8fb93239b99 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Fri, 5 Mar 2021 21:23:26 +0100
Subject: Separate LM386 muting from switching, slow down a T/R switch a bit

---
 sw/picardy/src/main.rs  | 14 +++++++++++++-
 sw/picardy/src/state.rs |  1 +
 2 files changed, 14 insertions(+), 1 deletion(-)

(limited to 'sw')

diff --git a/sw/picardy/src/main.rs b/sw/picardy/src/main.rs
index 22b894b..efdc59d 100644
--- a/sw/picardy/src/main.rs
+++ b/sw/picardy/src/main.rs
@@ -387,6 +387,18 @@ fn TIM2() {
             shared.mute_micn.set_low().unwrap();
             shared.seq2_switch.set_low().unwrap();
             shared.seq0n.set_high().unwrap();
+            if button_result.ptt || cw_ptt {
+                SequenceState::MutingSpkr
+            }
+            else {
+                SequenceState::Rx
+            }
+        },
+        SequenceState::MutingSpkr => {
+            shared.mute_spkr.set_high().unwrap();
+            shared.mute_micn.set_low().unwrap();
+            shared.seq2_switch.set_low().unwrap();
+            shared.seq0n.set_high().unwrap();
             if button_result.ptt {
                 SequenceState::SwitchingSSB
             }
@@ -466,7 +478,7 @@ fn TIM2() {
         },
     }
 
-    const SWITCHING_DELAY : u32 = TICKS_PER_SECOND * 40 / 1000;
+    const SWITCHING_DELAY : u32 = TICKS_PER_SECOND * 80 / 1000;
     if shared.state.sequence_state != next_state &&
         shared.last_sequence_state_change + SWITCHING_DELAY <= *ticks {
             shared.state.sequence_state = next_state;
diff --git a/sw/picardy/src/state.rs b/sw/picardy/src/state.rs
index 7f4909f..c275033 100644
--- a/sw/picardy/src/state.rs
+++ b/sw/picardy/src/state.rs
@@ -44,6 +44,7 @@ pub enum Mode {
 #[derive(Clone, PartialEq, Eq)]
 pub enum SequenceState {
     Rx,
+    MutingSpkr,
     SwitchingSSB,
     TxSSB,
     SwitchingCW,
-- 
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