init repo

README.md

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+# esp32 armchair

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+monitor_speed = 115200
+board_build.f_cpu = 240000000L
+board_build.f_flash = 80000000L
+board_build.flash_mode = qio
+board_build.partitions = huge_app.csv
+lib_deps = 
+	 cnmat/OSC
+	 bogde/HX711
+	 adafruit/Adafruit VS1053 Library
+	 SD(esp32)

src/main.cpp

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+#include "Arduino.h"
+#include "WiFi.h"
+#include "WiFiUdp.h"
+#include "OSCMessage.h"
+#include "OSCBundle.h"
+#include "SPI.h"
+#include "SD.h"
+#include "Adafruit_VS1053.h"
+#include "HX711.h"
+
+#define BL_ON 0
+
+#if BL_ON
+#include "BLEDevice.h"
+#include "BLEScan.h"
+
+#define blName "Sessel"
+#endif
+
+  
+// WiFi stuff
+#define ssid ""
+#define pwd ""
+
+// OSC
+#define host "192.168.20.105"
+#define port  3030
+#define localPort 4040
+
+// feather music maker
+#define maxFileNameLength 20
+#define VS1053_RESET   -1     // VS1053 reset pin (not used!)
+#define VS1053_CS      32     // VS1053 chip select pin (output)
+#define VS1053_DCS     33     // VS1053 Data/command select pin (output)
+#define CARDCS         14     // Card chip select pin
+#define VS1053_DREQ    15     // VS1053 Data request, ideally an Interrupt pin
+/*
+Miso --------> IO19
+Mosi --------> IO23
+Sck --------> IO18
+
+Sd Cs -------> IO14
+MP3 Cs ----> IO32
+DReq -------> IO15
+XdCs -------> IO33
+*/
+
+
+// load sensors 
+#define DOUT  21
+#define CLK  22
+
+WiFiUDP Udp;
+OSCErrorCode error;
+HX711 scale;
+float calibration_factor = -10380;
+const float threshold = 0.1;
+
+Adafruit_VS1053_FilePlayer musicPlayer = 
+  Adafruit_VS1053_FilePlayer(VS1053_RESET, VS1053_CS, VS1053_DCS, VS1053_DREQ, CARDCS);
+
+void bgTask(void * parameter ) {
+    scale.begin(DOUT, CLK);
+    scale.set_scale(calibration_factor);
+    scale.tare(); //Reset the scale to 0
+    float w = scale.get_units(4); 
+
+     while(true){
+	float wNew = scale.get_units(4);
+	if (abs(w-wNew) > threshold){
+		OSCMessage msgOut("/sessel/gewicht");
+  		msgOut.add(w);
+  		Udp.beginPacket(host, port);
+  		msgOut.send(Udp);
+  		Udp.endPacket();
+		w = wNew;
+	}
+      	vTaskDelay(100);}
+}
+
+void setup() {
+    Serial.begin(115200);
+    delay(500);
+
+    if (! musicPlayer.begin()) { // initialise the music player
+     	Serial.println(F("Couldn't find VS1053"));
+    }
+    Serial.println(F("VS1053 found"));
+
+    if (!SD.begin(CARDCS)) {
+    	Serial.println(F("SD failed, or not present"));
+     }
+
+    Serial.println("SD OK!");
+    musicPlayer.setVolume(10,10);
+    
+   
+
+    #if BL_ON
+    BLEDevice::init(blName);
+    #endif
+
+    WiFi.begin(ssid, pwd);
+    while (WiFi.status() != WL_CONNECTED) {
+        Serial.print(".");
+        delay(500);
+    }
+    Serial.print("WiFi connected, IP = ");
+    Serial.println(WiFi.localIP());
+    delay(1500);
+
+
+    Udp.begin(localPort);
+    
+    xTaskCreatePinnedToCore(
+    bgTask, 
+    "background task",
+    4000,
+    NULL,
+    1,
+    NULL,
+    0 );
+
+}
+
+void play(OSCMessage & msg){
+	char fileName[maxFileNameLength];
+	char * file = fileName;
+	msg.getString(0, file, maxFileNameLength);
+	Serial.println(file);
+	musicPlayer.startPlayingFile(file);
+}
+
+void stop(OSCMessage & msg){
+	Serial.println("stop");
+    	musicPlayer.stopPlaying();
+}
+
+void pause(OSCMessage & msg){
+	bool state = msg.getInt(0);
+	Serial.print("pause ");
+	Serial.println(state);
+      	musicPlayer.pausePlaying(state);
+}
+
+void togglePause(OSCMessage & msg){
+	Serial.println("togglePause");
+     if (! musicPlayer.paused()) {
+        musicPlayer.pausePlaying(true);
+      } else { 
+        musicPlayer.pausePlaying(false);
+      }
+}
+
+void setVolume(OSCMessage & msg){
+	int vol = msg.getInt(0);
+	Serial.print("set Volume to ");
+	Serial.println(vol);
+	musicPlayer.setVolume(vol,vol);
+}
+
+
+void loop() {
+  
+  musicPlayer.feedBuffer();
+  OSCMessage msg;
+  int size = Udp.parsePacket();
+
+  if (size > 0) {
+    while (size--) {
+      msg.fill(Udp.read());
+    }
+    if (!msg.hasError()) {
+      msg.dispatch("/play", play);
+      msg.dispatch("/stop", stop);
+      msg.dispatch("/pause", pause);
+      msg.dispatch("/togglePause", togglePause);
+      msg.dispatch("/setVolume", setVolume);
+    } else {
+      error = msg.getError();
+      Serial.print("error: ");
+      Serial.println(error);
+    }
+  }
+  delay(10);
+
+  
+}

test/README

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+
+This directory is intended for PlatformIO Unit Testing and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PlatformIO Unit Testing:
+- https://docs.platformio.org/page/plus/unit-testing.html