From ac3036011e83a91351526be39de441c8dbd3e58c Mon Sep 17 00:00:00 2001
From: Peter Cai <peter@typeblog.net>
Date: Wed, 30 Jun 2021 20:07:44 +0800
Subject: [PATCH] motor_control: add a little bit of delay between notes

---
 motor_control.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/motor_control.cpp b/motor_control.cpp
index ec41e7c..1604283 100644
--- a/motor_control.cpp
+++ b/motor_control.cpp
@@ -61,7 +61,9 @@ void MotorControl::Init() {
 
 void MotorControl::TickOn(unsigned long period_half_micros) {
     tick_ctrl.SetPeriod(period_half_micros);
-    next_tick_half_micros = tick_ctrl.NextTick();
+    // Delay every note for 20 ms to add a bit of gap (attack) between notes
+    // 20 ms should be short enough (you need > 350 bpm for 1/32 notes to be 20ms long)
+    next_tick_half_micros = tick_ctrl.NextTick() + 20 * 1000 * 2;
 }
 
 void MotorControl::TickAtPitch(unsigned int midi_pitch) {