Revision 3:5fc7b56ebe8c, committed 2017-05-10

Comitter:

wspec

Date:

Wed May 10 05:13:19 2017 +0000

Parent:

2:77750f8cba47

Commit message:

Sample rate

Changed in this revision

--- a/main.cpp	Thu Jan 19 10:16:20 2017 -0600
+++ b/main.cpp	Wed May 10 05:13:19 2017 +0000
@@ -16,25 +16,25 @@
  
 #include "mbed.h"
 
-// Initialize a pins to perform analog input and digital output fucntions
+// Initialize a pins to perform analog input and digital output functions
 AnalogIn   ain(A0);
-DigitalOut dout(LED1);
+//DigitalOut dout(LED1);
 
 int main(void)
 {
-    while (1) {
-        // test the voltage on the initialized analog pin
-        //  and if greater than 0.3 * VCC set the digital pin
-        //  to a logic 1 otherwise a logic 0
-        if(ain > 0.3f) {
-            dout = 1;
-        } else {
-            dout = 0;
+    Timer t;
+    int sampleCount = 0;
+    while(true)
+    {
+        t.start();
+        while (sampleCount < 1000) {
+            float r = ain.read();
+            sampleCount++; 
+            //printf("Raw ADC Val: %f\n", ain.read());
+            //printf("Voltage Val : %f\n",(ain.read_u16()&0xFFF)*3.3/4095);
         }
-        
-        // print the percentage and 16 bit normalized values
-        printf("percentage: %3.3f%%\n", ain.read()*100.0f);
-        printf("normalized: 0x%04X \n", ain.read_u16());
-        wait(0.2f);
-    }
+        printf("Sample Count: %d in %fs\n",sampleCount, t.read());
+        sampleCount = 0;
+        t.reset();
+    }    
 }