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

MAX9814.h@0:49d2ee7cb020, 2014-11-02 (annotated)

Committer:
andcor02
Date:
Sun Nov 02 17:32:03 2014 +0000
Revision:
0:49d2ee7cb020
Child:
1:cf181e6a2ead
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.; ; ;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andcor02 0:49d2ee7cb020 1 #ifndef MBED_MIC_H
andcor02 0:49d2ee7cb020 2 #define MBED_MIC_H
andcor02 0:49d2ee7cb020 3
andcor02 0:49d2ee7cb020 4 #include "mbed.h"
andcor02 0:49d2ee7cb020 5
andcor02 0:49d2ee7cb020 6 class MAX9814 {
andcor02 0:49d2ee7cb020 7
andcor02 0:49d2ee7cb020 8 public:
andcor02 0:49d2ee7cb020 9
andcor02 0:49d2ee7cb020 10 MAX9814(PinName pin);
andcor02 0:49d2ee7cb020 11
andcor02 0:49d2ee7cb020 12 void led_array(float x);
andcor02 0:49d2ee7cb020 13
andcor02 0:49d2ee7cb020 14 void volume_indicator();
andcor02 0:49d2ee7cb020 15
andcor02 0:49d2ee7cb020 16 float calibration();
andcor02 0:49d2ee7cb020 17
andcor02 0:49d2ee7cb020 18 float sound_level();
andcor02 0:49d2ee7cb020 19
andcor02 0:49d2ee7cb020 20 protected:
andcor02 0:49d2ee7cb020 21 AnalogIn _pin;
andcor02 0:49d2ee7cb020 22 BusOut _led1, _led2, _led3, _led4;
andcor02 0:49d2ee7cb020 23 float _value,_sum,_average;
andcor02 0:49d2ee7cb020 24 int _count;
andcor02 0:49d2ee7cb020 25 float _sample;
andcor02 0:49d2ee7cb020 26 Timer _t,_t1;
andcor02 0:49d2ee7cb020 27 };
andcor02 0:49d2ee7cb020 28
andcor02 0:49d2ee7cb020 29 #endif