Add initial Analogue MIDI sync functionality (needs options)

1 files changed, 17 insertions, 3 deletions

diff --git a/src/sequencer.c b/src/sequencer.c
index 11c0f5a..9dcaa89 100644
--- a/src/sequencer.c
+++ b/src/sequencer.c
@@ -346,9 +346,9 @@ play_step(void) {
     step_counter = (step_counter + 1) % 16;
 }
 
-static nseq_ticks = 0;
 void
 sequencer_tick(void) {
+    static int nseq_ticks = 0;
     if (nseq_ticks++ < 24) {
         return;
     }
@@ -1549,10 +1549,24 @@ handle_sequencer_input(void) {
     }
 }
 
+static int in_ticks = 0;
+
+void
+reset_serial_in(void) {
+    in_ticks = 0;
+}
+
 void
-serial_irq() {
+serial_irq(void) {
     if (play_status) {
-        play_step();
+        if (in_ticks++ == 0) {
+            // TODO: Instead of play_step use the nseq_ticks instead!
+            play_step();
+            // MIDI: 24 / 8 = 3
+            // set to 6 for half tempo
+        } else if (in_ticks == 3) {
+            in_ticks = 0;
+        }
     }
 }