Revision 32:a9f3966b8759, committed 20 months ago

Comitter:

csmk18112

Date:

Wed Sep 07 09:45:04 2022 +0000

Parent:

31:c03fdf6f0138

Commit message:

v1

Changed in this revision

--- a/main.cpp	Fri Aug 19 04:50:42 2022 +0000
+++ b/main.cpp	Wed Sep 07 09:45:04 2022 +0000
@@ -1,18 +1,73 @@
 #include "mbed.h"
 #include "HEPTA_EPS.h"
+#include "HEPTA_SENSOR.h"
 #include "HEPTA_CDH.h"
-#include "HEPTA_SENSOR.h"
 
-Serial pc(USBTX,USBRX);
+HEPTA_CDH cdh(p5, p6, p7, p8, "sd");
+ 
+Serial pc(USBTX, USBRX, 9600);
 HEPTA_EPS eps(p16,p26);
-HEPTA_CDH cdh(p5,p6,p7,p8,"sd");
 HEPTA_SENSOR sensor(p17,
                   p28,p27,0x19,0x69,0x13,
                   p13, p14,p25,p24);
 
-int main()
-{
-    sensor.gps_setting();
-    pc.printf("GPS Raw Data Mode\r\n");
-    while(1) pc.putc(sensor.getc());
+AnalogIn mic(p15); //microphone input
+
+DigitalOut led1(LED1); // following leds are used to visualy show amplitude of sound
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+Timer sattime;
+
+void record(float* sampleArr) {
+    //record sound for 1 second
+    for(int i=0; i<4000; i++) {
+        sampleArr[i] = mic.read(); //put samples in array
+        wait(0.000125f); //sample rate of 8000 Hz
+    }  
+}
+
+void volume(){
+    //the following lights up the onboard LEDs depending on the amplitude of sound
+    led1 = (mic > 0.5f) ? 1 : 0;
+    led2 = (mic > 0.6f) ? 1 : 0;
+    led3 = (mic > 0.7f) ? 1 : 0;
+    led4 = (mic > 0.8f) ? 1 : 0;
+}
+
+int rcmd=1;
+
+int main() {
+    float sampleArr[4000];
+    sattime.start();
+    float starttime=sattime.read();
+    pc.printf("Start time: %f\r\n",starttime);
+    pc.baud(9600);
+    while(1){
+        volume();
+        if(rcmd == 1) {
+            record(sampleArr);
+            float endtime=sattime.read();
+            pc.printf("The following data has been written:\r\n");
+            for (int j=0; j<400; j++) {
+                if (j == 0){
+                pc.printf("%f = %f\r\n",starttime,sampleArr[j]);
+                }
+                else {
+                pc.printf("%f = %f\r\n",endtime,sampleArr[j]);
+                }
+             }
+            FILE *fp = fopen("/sd/mydir/test2.txt","w");  
+            if(fp == NULL) {
+                error("Could not open file for write\r\n");
+            }
+            for (int j=0; j<400; j++) {
+                fprintf(fp,"%f\r\n",sampleArr[j]);
+            }
+            fclose(fp);
+            wait(5);
+            pc.printf("Writing data complete\r\n");
+        }
+    }
 }
\ No newline at end of file