Diff: main.cpp

Revision:

2:b4f8b72a22ec

Parent:

1:89aa667d1a9b

--- a/main.cpp	Mon Dec 19 14:55:38 2016 +0000
+++ b/main.cpp	Sun Feb 25 14:34:52 2018 +0000
@@ -1,6 +1,6 @@
 #include "mbed.h"
 
-LocalFileSystem local("local");               // Create the local filesystem under the name "local"
+
 AnalogIn in(A0);
 
 #if !DEVICE_ANALOGOUT
@@ -9,18 +9,28 @@
 AnalogOut out(PA_4);
 #endif
 
+/* #if !DEVICE_FILEHANDLE
+#error You cannot use this example as the FileHandle is not supported on this device.
+#else
+LocalFileSystem local("local");  // Create the local filesystem under the name "local"
+#endif */
+
 DigitalOut led(LED1);
+DigitalOut set(PB_0);
 
 
 int main()
 {
-    FILE *fp = fopen("/local/out.txt", "w");  // Open "out.txt" on the local file system for writing
+/*    FILE *fp = fopen("/DETAILS.TXT", "w");  // Open "out.txt" on the local file system for writing
     fprintf(fp, "Hello World!");
-    fclose(fp);
+    fclose(fp); */
 
     printf("\nAnalog loop example\n");
     printf("*** Connect A0 and PA_4 pins together ***\n");
-    while(1) {
+    int i (0);
+    while(i <= 10) {
+        set.write(0);
+        float in_value = in.read();
         for (float out_value = 0.0f; out_value < 1.1f; out_value += 0.1f) {
             // Output value using DAC
             out.write(out_value);
@@ -28,8 +38,13 @@
             // Read ADC input
             float in_value = in.read();
             // Display difference between two values
-            float diff = fabs(out_value - in_value);
-            printf("(out:%.4f) - (in:%.4f) = (%.4f) ", out_value, in_value, diff);
+            float diff = fabs(out_value - in_value)*3.3f;
+            in_value *= 3.3f;
+            out_value *= 3.3f;            
+            printf("(out:%.4f V) - (in:%.4f V) = (%.4f V) ", out_value, in_value, diff);
+            out_value /= 3.3f;
+            in_value /= 3.3f;
+            diff /= 3.3f;
             if (diff > 0.05f) {
                 printf("FAIL\n");
             } else {
@@ -37,7 +52,11 @@
                 printf("\033[1A"); // Moves cursor up of 1 line
             }
             led = !led;
+            ++i;
         }
+        /* in_value *= 3.3f;
+        printf("(out:%.4f V)", in_value);
+        ++i; */
     }
 }