Andrea Corrado / MAX9814_Electret_Microphone_LED_Volume_Indicator

Library to control Electret Microphone Amplifier - MAX9814 from adafruit. Allows: To sample analogue voltage to transform into rough sound level. Transfer sound level to visual indicator, volume bar such as 4 LEDs on LPC11U24.

Dependents:   MAX9814_LED_Sound_Indicator

Files at this revision

API Documentation at this revision

Revision 1:cf181e6a2ead, committed 2014-11-02

Comitter:
andcor02
Date:
Sun Nov 02 18:42:52 2014 +0000
Parent:
0:49d2ee7cb020
Child:
2:af2a48ef297c
Commit message:
REV 1.0

Changed in this revision

MAX9814.cpp Show annotated file Show diff for this revision Revisions of this file
MAX9814.h Show annotated file Show diff for this revision Revisions of this file 
--- a/MAX9814.cpp	Sun Nov 02 17:32:03 2014 +0000
+++ b/MAX9814.cpp	Sun Nov 02 18:42:52 2014 +0000
@@ -1,3 +1,8 @@
+/*
+    MAX9814.cpp - MAX9814 sensor library
+    Developed by Andrea Corrado   
+*/
+
 #include "mbed.h"
 #include "MAX9814.h"
 
@@ -6,40 +11,6 @@
 }
 
 
-void MAX9814::led_array(float x ) {
-
-    if (_value<x+0.05) {
-            _led1=0;
-            _led2=0;
-            _led3=0;
-            _led4=0;
-    }
-    if (_value>x+0.05&&_value<0.5+x) {
-            _led1=1;
-            _led2=0;
-            _led3=0;
-            _led4=0;
-    }
-    if (_value>0.5+x&&_value<1+x) {
-            _led1=1;
-            _led2=1;
-            _led3=0;
-            _led4=0;
-    }
-    if (_value>1+x&&_value<1.2+x) {
-            _led1=1;
-            _led2=1;
-            _led3=1;
-            _led4=0;
-    }
-    if (_value>1.2+x&&_value<2.8+x) {
-            _led1=1;
-            _led2=1;
-            _led3=1;
-            _led4=1;
-    }
-}
-
 float MAX9814::calibration() {
     
     _t.start();
@@ -97,6 +68,39 @@
     return _value;
 }
 
+void MAX9814::led_array(float x ) {
+
+    if (_value<x+0.05) {
+            _led1=0;
+            _led2=0;
+            _led3=0;
+            _led4=0;
+    }
+    if (_value>x+0.05&&_value<0.5+x) {
+            _led1=1;
+            _led2=0;
+            _led3=0;
+            _led4=0;
+    }
+    if (_value>0.5+x&&_value<1+x) {
+            _led1=1;
+            _led2=1;
+            _led3=0;
+            _led4=0;
+    }
+    if (_value>1+x&&_value<1.2+x) {
+            _led1=1;
+            _led2=1;
+            _led3=1;
+            _led4=0;
+    }
+    if (_value>1.2+x&&_value<2.8+x) {
+            _led1=1;
+            _led2=1;
+            _led3=1;
+            _led4=1;
+    }
+}
 
 void MAX9814::volume_indicator() {
         led_array(_average);

--- a/MAX9814.h	Sun Nov 02 17:32:03 2014 +0000
+++ b/MAX9814.h	Sun Nov 02 18:42:52 2014 +0000
@@ -1,3 +1,28 @@
+/*
+    MAX9814.h - MAX9814 sensor library
+    Developed by Andrea Corrado   
+*/
+
+/*
+    Example 'main.cpp'
+
+#include "mbed.h"
+#include "MAX9814.h"
+Serial pc (USBTX, USBRX);
+
+
+MAX9814 mic(p20);
+
+int main()
+{
+    while (1) {
+        mic.volume_indicator();
+        pc.printf("\n\r Level is %f", mic.sound_level());
+    }
+}
+
+*/
+
 #ifndef MBED_MIC_H
 #define MBED_MIC_H