Brennon Farmer
/
4180_Final_Project_Menu_Music
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Dependencies: mbed mbed-rtos 4180Final SDFileSystem
Diff: microphone.h
- Revision:
- 1:e14104308237
- Parent:
- 0:c5d6f214ba01
--- a/microphone.h Sun Apr 26 06:56:36 2020 +0000
+++ b/microphone.h Sun Apr 26 19:17:18 2020 +0000
@@ -1,4 +1,12 @@
#include "mbed.h"
+//Adafruit MEMs SPW2430 microphone demo - LEDs display audio level
+BusOut led_strip(p21,p22,p23, p24, p25, p26);
+PwmOut led1(p21);
+PwmOut led2(p22);
+PwmOut led3(p23);
+PwmOut led4(p24);
+PwmOut led5(p25);
+PwmOut led6(p26);
class microphone
{
@@ -21,3 +29,32 @@
{
return _pin.read();
}
+
+microphone mymicrophone(p16);
+
+int get_sound()
+{
+ //while(1) {
+//read in, subtract 0.67 DC bias, take absolute value, and scale up .1Vpp to 15 for builtin LED display
+ int val = int(abs((mymicrophone - (0.67/3.3)))*500.0);
+ if(val <= 2.5){
+ led_strip = 0b100000;
+ } else if (2.5 > val && val < 5){
+ led_strip = 0b110000;
+ } else if (val > 5 && val < 7.5){
+ led_strip = 0b111000;
+ } else if (val > 7.5 && val < 10){
+ led_strip = 0b111100;
+ } else if (val > 10 && val < 12.5){
+ led_strip = 0b111110;
+ } else if (val > 12.5 && val < 15){
+ led_strip = 0b111111;
+ } else {
+ led_strip = 0;
+ }
+ wait(0.2);
+//Use an 8kHz audio sample rate (phone quality audio);
+ //wait(1.0/8000.0);
+ // }
+ return val;
+}