From a80b2b24a4ab57d728315ffd04d70e9ab8fbba81 Mon Sep 17 00:00:00 2001
From: me-no-dev <hristo@espressif.com>
Date: Sun, 5 Feb 2017 16:14:43 +0200
Subject: [PATCH] Add ESP32 examples folder and sigma-delta example

---
 .../AnalogOut/SigmaDelta/SigmaDelta.ino        | 18 ++++++++++++++++++
 libraries/ESP32/library.properties             |  9 +++++++++
 libraries/ESP32/src/dummy.h                    |  2 ++
 3 files changed, 29 insertions(+)
 create mode 100644 libraries/ESP32/examples/AnalogOut/SigmaDelta/SigmaDelta.ino
 create mode 100644 libraries/ESP32/library.properties
 create mode 100644 libraries/ESP32/src/dummy.h

diff --git a/libraries/ESP32/examples/AnalogOut/SigmaDelta/SigmaDelta.ino b/libraries/ESP32/examples/AnalogOut/SigmaDelta/SigmaDelta.ino
new file mode 100644
index 000000000..4a5c012bb
--- /dev/null
+++ b/libraries/ESP32/examples/AnalogOut/SigmaDelta/SigmaDelta.ino
@@ -0,0 +1,18 @@
+void setup()
+{
+    //setup channel 0 with frequency 312500 Hz
+    sigmaDeltaSetup(0, 312500);
+    //attach pin 18 to channel 0
+    sigmaDeltaAttachPin(18,0);
+    //initialize channel 0 to off
+    sigmaDeltaWrite(0, 0);
+}
+
+void loop()
+{
+    //slowly ramp-up the value
+    //will overflow at 256
+    static uint8_t i = 0;
+    sigmaDeltaWrite(0, i++);
+    delay(100);
+}
diff --git a/libraries/ESP32/library.properties b/libraries/ESP32/library.properties
new file mode 100644
index 000000000..8e78c3f3b
--- /dev/null
+++ b/libraries/ESP32/library.properties
@@ -0,0 +1,9 @@
+name=ESP32
+version=1.0
+author=Hristo Gochkov, Ivan Grokhtkov
+maintainer=Hristo Gochkov <hristo@espressif.com>
+sentence=ESP32 sketches examples
+paragraph=
+category=Other
+url=
+architectures=esp32
diff --git a/libraries/ESP32/src/dummy.h b/libraries/ESP32/src/dummy.h
new file mode 100644
index 000000000..d8a140eda
--- /dev/null
+++ b/libraries/ESP32/src/dummy.h
@@ -0,0 +1,2 @@
+// This file is here only to silence warnings from Arduino IDE
+// Currently IDE doesn't support no-code libraries, like this collection of example sketches.
-- 
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