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

Diff: MAX9814.h

Revision:
0:49d2ee7cb020
Child:
1:cf181e6a2ead
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX9814.h	Sun Nov 02 17:32:03 2014 +0000
@@ -0,0 +1,29 @@
+#ifndef MBED_MIC_H
+#define MBED_MIC_H
+
+#include "mbed.h"
+
+class MAX9814 {
+    
+public:
+
+    MAX9814(PinName pin);
+    
+    void led_array(float x);
+    
+    void volume_indicator();
+    
+    float calibration();
+    
+    float sound_level();
+
+protected:
+    AnalogIn _pin;
+    BusOut _led1, _led2, _led3, _led4;
+    float _value,_sum,_average;
+    int _count;
+    float _sample;
+    Timer _t,_t1;
+};
+
+#endif
\ No newline at end of file