Program 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.
Dependencies: MAX9814_Electret_Microphone_LED_Volume_Indicator mbed
Diff: Hammer_MicrophoneSensor.c
- Revision:
- 1:380e6ab41172
- Parent:
- 0:d096ca2ffef0
- Child:
- 2:204df97fe23a
--- a/Hammer_MicrophoneSensor.c Sun Nov 02 17:00:16 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,103 +0,0 @@
-//#include "mbed.h"
-//#include "Hammer_MicrophoneSensor.h"
-//
-//MAX9814::MAX9814(PinName pin): _pin(pin), _led1(LED1), _led2(LED2), _led3(LED3), _led4(LED4) {
-//}
-//
-//
-//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();
-// _t1.start();
-// float peakToPeak=0, signalMax=0, signalMin=1024;
-//
-// while (_t1.read()<1) {
-// while (_t.read_ms()<50) {
-// _sample=_pin.read();
-//
-// if (_sample<1024) {
-// if (_sample>signalMax)
-// signalMax=_sample;
-//
-// else if (_sample<signalMin)
-// signalMin=_sample;
-// }
-// }
-// _t.reset();
-// peakToPeak=signalMax-signalMin;
-// _value= (peakToPeak*3.3);
-// _value = floor(_value * 100) / 100;
-// _sum+=_value;
-// _count++;
-// }
-// _average=_sum/_count;
-// _t1.reset();
-//
-// return _average;
-//}
-//
-//float MAX9814::sound_level() {
-//
-// _t.start();
-// float peakToPeak=0, signalMax=0, signalMin=1024;
-//
-// while (_t.read_ms()<50) {
-// _sample=_pin.read();
-//
-// if (_sample<1024) {
-// if (_sample>signalMax)
-// signalMax=_sample;
-//
-// else if (_sample<signalMin)
-// signalMin=_sample;
-// }
-// }
-// _t.reset();
-// peakToPeak=signalMax-signalMin;
-// _value= (peakToPeak*3.3);
-// _value = floor(_value * 100) / 100;
-// _sum+=_value;
-// _count++;
-//
-// return _value;
-//}
-//
-//
-//void MAX9814::volume_indicator() {
-// led_array(_average);
-// sound_level();
-//}
Andrea Corrado
Electret Microphone Amplifier - MAX9814