Revision 3:f879eeeb5e8d, committed 2020-02-08

Comitter:

CSTritt

Date:

Sat Feb 08 18:39:55 2020 +0000

Parent:

2:e0faf9e57796

Commit message:

Initial version of potentiometer (analog) to serial program.

Changed in this revision

--- a/main.cpp	Mon Mar 27 14:20:32 2017 +0000
+++ b/main.cpp	Sat Feb 08 18:39:55 2020 +0000
@@ -1,19 +1,21 @@
 /*
-    Project: analogRead
+    Project: potSerial
     File: main.cpp
     
     Reads from analog input, streams ASCII text to std serial using printf and
     lights onboard LED. Also demonstrates use of floating point literal suffix
-    toeliminate warning and int constants for HIGH and LOW.
+    to eliminate warning and int constants for HIGH and LOW.
     
     Written by: Dr. C. S. Tritt
-    Created: 3/27/17 (v. 1.1)
+    Created: 2/8/20 (v. 1.0)
     
 */
 #include "mbed.h"
 
 const int HIGH = 1; // Optional, but makes code more readable.
 const int LOW = 0; // Optional, but makes code more readable.
+const float WAIT = 0.25f; // Wait time between samples (s).
+const float LIGHT = 0.5f; // Analog value (0 to 1 scale) to light LED.
  
 AnalogIn analog_value(A0);
  
@@ -22,18 +24,17 @@
 int main() {
     float value; // Value to be read and sent to serial port.
     
-    printf("\nAnalogIn example\n");
+    printf("\nAnalog to serial example.\n");
     
     while(true) {
         value = analog_value.read(); // Read the analog input value (0 to 1)
-        printf("Value = %f\n", value); // Send value as text via serial port.
-        if (value > 0.5f) { // Activate built-in LED. The f is optional.
+        printf("%f\n", value); // Send value as text via serial port.
+        if (value > LIGHT) { // Activate built-in LED based on LIGHT value.
           led.write(HIGH);
         }
         else {
           led.write(LOW);
         }
-        printf("LED = %d\n", (int) led.read()); // Send LED state via serial. 
-        wait(0.25); // 250 ms
+        wait(WAIT); // Wait WAIT seconds.
     }
-}
+}
\ No newline at end of file

--- a/mbed.bld	Mon Mar 27 14:20:32 2017 +0000
+++ b/mbed.bld	Sat Feb 08 18:39:55 2020 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/093f2bd7b9eb
\ No newline at end of file
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file