From 3a591b85d79d4fac6074beb554972c8d1eb6d2b9 Mon Sep 17 00:00:00 2001
From: hughbarney <hughbarney@googlemail.com>
Date: Tue, 9 Mar 2021 21:28:32 +0000
Subject: [PATCH] stepo BTN2 switches to launcher

---
 apps/stepo/ChangeLog |  2 +-
 apps/stepo/README.md |  9 ++++++++-
 apps/stepo/app.js    | 33 ++++++++++++++++++++++++++++++++-
 3 files changed, 41 insertions(+), 3 deletions(-)

diff --git a/apps/stepo/ChangeLog b/apps/stepo/ChangeLog
index c91dc7abd..c94954969 100644
--- a/apps/stepo/ChangeLog
+++ b/apps/stepo/ChangeLog
@@ -1,2 +1,2 @@
 0.01: First version
-0.02: Speeded up first draw, ensure timer is stopped and started depending on screen event
+0.02: Speeded up draw, start stop timer, long press BTN2 to switch to the launcher
diff --git a/apps/stepo/README.md b/apps/stepo/README.md
index 86f462ca2..26531c121 100644
--- a/apps/stepo/README.md
+++ b/apps/stepo/README.md
@@ -10,6 +10,7 @@ A large font watch, displays step count in a doughnut guage and warns of low bat
 - The guage show percentage of steps out of a goal of 10000 steps
 
 
+
 ![](screenshot1.jpg)
 
 - When the battery is less than 25% the doughnut turns red
@@ -17,8 +18,14 @@ A large font watch, displays step count in a doughnut guage and warns of low bat
 ![](screenshot2.jpg)
 
 
-# Notes
+## BTN2 Long press to start the launcher
 
+BTN2 is confiured to respond to a 1.5 second press in order to switch
+to the launcher App. Simply press and hold until you hear a buzz and
+release. This avoids accidently switching out of the watch app when
+clothing catches it.
+
+## Notes
 
 * Uses an arrayBuffer to prepare the doughnut guage. The arrayBuffer
   is 160*160 and is larger than required. The reason for this is that
diff --git a/apps/stepo/app.js b/apps/stepo/app.js
index 1e6ca7b53..e3f7092f1 100644
--- a/apps/stepo/app.js
+++ b/apps/stepo/app.js
@@ -108,9 +108,40 @@ Bangle.on('lcdPower', function(on) {
     stopTimer();
 });
 
+let firstPress = 0;
+var pressTimer;
+
+// start a timer and buzz whenn held long enough
+function firstPressed() {
+  firstPress = getTime();
+  pressTimer = setInterval(longPressCheck, 1500);
+}
+
+// if you release too soon there is no buzz as timer is cleared
+function thenReleased() {
+  var dur = getTime() - firstPress;
+  if (pressTimer) {
+    clearInterval(pressTimer);
+    pressTimer = undefined;
+  }
+  if ( dur >= 1.5 ) Bangle.showLauncher();
+}
+
+// when you feel the buzzer you know you have done a long press
+function longPressCheck() {
+  Bangle.buzz();
+  if (pressTimer) {
+    clearInterval(pressTimer);
+    pressTimer = undefined;
+  }
+}
+
+// make BTN require a long press (1.5 seconds) to switch to launcher
+setWatch(firstPressed, BTN2,{repeat:true,edge:"rising"});
+setWatch(thenReleased, BTN2,{repeat:true,edge:"falling"});
+
 g.reset();
 g.clear();
 Bangle.loadWidgets();
 Bangle.drawWidgets();
 startTimer();
-setWatch(Bangle.showLauncher, BTN2, {repeat:false,edge:"falling"});