From 02aea42207469c430f94b924cbf6de2f4d2d94a6 Mon Sep 17 00:00:00 2001
From: Thomas Schmid <tom@binary-kitchen.de>
Date: Sun, 26 Jun 2022 00:23:50 +0200
Subject: [PATCH 1/2] add acceleration sensor

Signed-off-by: Thomas Schmid <tom@binary-kitchen.de>
---
 firmware/include/zauberstab.h | 11 +++++++++--
 firmware/platformio.ini       |  4 +++-
 firmware/src/zauberstab.cpp   | 26 ++++++++++++++++++++++++++
 3 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/firmware/include/zauberstab.h b/firmware/include/zauberstab.h
index 57a875b..ae449e2 100644
--- a/firmware/include/zauberstab.h
+++ b/firmware/include/zauberstab.h
@@ -2,12 +2,19 @@
 
 #include "Arduino.h"
 #include <FastLED.h>
+#include<Wire.h>
+#include<ADXL345_WE.h>
+
+#define ADXL345_I2CADDR 0x53  // 0x1D if SDO = HIGH
 
 #define LED_PIN 12
-#define NUM_LEDS 144
+#define NUM_LEDS 48
 #define MIC_PIN 15
 
 extern CRGB leds[NUM_LEDS];
+extern ADXL345_WE myAcc;
 
 int zauberstab_init();
-float get_sample();
\ No newline at end of file
+float get_sample();
+void switch_app();
+bool acc_has_event();
\ No newline at end of file
diff --git a/firmware/platformio.ini b/firmware/platformio.ini
index 22305b5..ad2ded7 100644
--- a/firmware/platformio.ini
+++ b/firmware/platformio.ini
@@ -10,7 +10,9 @@
 
 [env]
 framework = arduino
-lib_deps = fastled/FastLED @ ^3.5.0
+lib_deps = 
+    fastled/FastLED @ ^3.5.0
+    wollewald/ADXL345_WE @ ^2.1.4
 
 [env:esp32doit-devkit-v1]
 platform = espressif32
diff --git a/firmware/src/zauberstab.cpp b/firmware/src/zauberstab.cpp
index 51a3489..c65e1bb 100644
--- a/firmware/src/zauberstab.cpp
+++ b/firmware/src/zauberstab.cpp
@@ -4,16 +4,42 @@
 DcCancelation<float> dc_blocker{0.95};
 CRGB leds[NUM_LEDS];
 static int16_t mic_offset = 0;
+static bool acc_event = false;
+ADXL345_WE myAcc = ADXL345_WE(ADXL345_I2CADDR);
 
 static uint16_t read_mic()
 {
     return analogRead(MIC_PIN);
 }
 
+void double_tab_int() {
+    acc_event = true;
+}
+
+bool acc_has_event() {
+    return acc_event;
+}
+
 int zauberstab_init()
 {
     FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
+    FastLED.addLeds<WS2812, 14, GRB>(leds, NUM_LEDS);
+    FastLED.addLeds<WS2812, 27, GRB>(leds, NUM_LEDS);
     // FastLED.setMaxPowerInVoltsAndMilliamps(5, 300);
+
+    Wire.begin();
+    if (!myAcc.init()){
+        Serial.println("Ooops, no ADXL345 detected ... Check your wiring!");
+        return -1;
+    }
+
+    myAcc.setDataRate(ADXL345_DATA_RATE_200);
+    myAcc.setRange(ADXL345_RANGE_8G);
+    myAcc.setGeneralTapParameters(ADXL345_XY0, 3.0, 30, 100.0);
+    myAcc.setAdditionalDoubleTapParameters(false, 250);
+    myAcc.setInterrupt(ADXL345_DOUBLE_TAP, INT_PIN_1);
+    attachInterrupt(digitalPinToInterrupt(4), double_tab_int, RISING);
+
     return 0;
 }
 

From 9f3c929fcd48fa26db1a1311e3f4864dde0faa09 Mon Sep 17 00:00:00 2001
From: Thomas Schmid <tom@binary-kitchen.de>
Date: Sun, 26 Jun 2022 00:24:44 +0200
Subject: [PATCH 2/2] update main app handling to include an off state

Signed-off-by: Thomas Schmid <tom@binary-kitchen.de>
---
 firmware/src/main.cpp | 57 +++++++++++++++++++++++++++++++++++++++----
 1 file changed, 52 insertions(+), 5 deletions(-)

diff --git a/firmware/src/main.cpp b/firmware/src/main.cpp
index 683f862..8463305 100644
--- a/firmware/src/main.cpp
+++ b/firmware/src/main.cpp
@@ -22,25 +22,72 @@ std::vector<std::reference_wrapper<App>> apps = {
     std::ref<App>(fackel_app)
     };
 
+<<<<<<< HEAD
 unsigned int current_app = 1;
 unsigned int next_app;
+=======
+static unsigned int current_app = 0;
+static unsigned int next_app;
+static bool init_successfull = false;
+static bool sleep_active=false;
+
+void switch_app() {
+    if (!sleep_active) {
+        next_app = current_app + 1;
+    } else {
+        sleep_active = false;
+        next_app = 0;
+    }
+
+    if (next_app >= apps.size()) {
+        next_app = 0;
+        // Turn off leds before going to sleep
+        fadeToBlackBy(leds, NUM_LEDS, 0xFF);
+        FastLED.show();
+
+        //configure wakeup source
+        esp_sleep_enable_ext0_wakeup(GPIO_NUM_4, 1);
+        
+        //bedtime
+        sleep_active = true;
+        esp_deep_sleep_start();
+    }
+
+    next_app = next_app % apps.size();
+}
+>>>>>>> update main app handling to include an off state
 
 void setup()
 {
     next_app = current_app;
+<<<<<<< HEAD
     zauberstab_init();
     //Serial.begin(115200);
+=======
+    if (zauberstab_init() != 0) {
+        return;
+    }
+    Serial.begin(115200);
+>>>>>>> update main app handling to include an off state
 
+    init_successfull = true;
     apps[current_app].get().init();
 }
 
 void loop()
 {
-/*     EVERY_N_SECONDS(30)
-    {
-        next_app++;
-        next_app = next_app % apps.size();
-    } */
+    if (!init_successfull) {
+        return;
+    }
+
+    if (acc_has_event()) {
+        String axes = myAcc.getActTapStatusAsString();
+        byte intSource = myAcc.readAndClearInterrupts();
+
+        if (myAcc.checkInterrupt(intSource, ADXL345_DOUBLE_TAP)) {
+            switch_app();
+        }
+    }
 
     if (next_app != current_app)
     {