Charles Tritt / Mbed 2 deprecated potSerial

Dependencies:   mbed

main.cpp@3:f879eeeb5e8d, 2020-02-08 (annotated)

Committer:
CSTritt
Date:
Sat Feb 08 18:39:55 2020 +0000
Revision:
3:f879eeeb5e8d
Parent:
2:e0faf9e57796 
Initial version of potentiometer (analog) to serial  program.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
CSTritt 0:2254358fce87 1 /*
CSTritt 3:f879eeeb5e8d 2 Project: potSerial
CSTritt 0:2254358fce87 3 File: main.cpp
CSTritt 0:2254358fce87 4
CSTritt 0:2254358fce87 5 Reads from analog input, streams ASCII text to std serial using printf and
CSTritt 1:8e3c0c69a6ca 6 lights onboard LED. Also demonstrates use of floating point literal suffix
CSTritt 3:f879eeeb5e8d 7 to eliminate warning and int constants for HIGH and LOW.
CSTritt 0:2254358fce87 8
CSTritt 0:2254358fce87 9 Written by: Dr. C. S. Tritt
CSTritt 3:f879eeeb5e8d 10 Created: 2/8/20 (v. 1.0)
CSTritt 0:2254358fce87 11
CSTritt 0:2254358fce87 12 */
CSTritt 0:2254358fce87 13 #include "mbed.h"
CSTritt 0:2254358fce87 14
CSTritt 0:2254358fce87 15 const int HIGH = 1; // Optional, but makes code more readable.
CSTritt 0:2254358fce87 16 const int LOW = 0; // Optional, but makes code more readable.
CSTritt 3:f879eeeb5e8d 17 const float WAIT = 0.25f; // Wait time between samples (s).
CSTritt 3:f879eeeb5e8d 18 const float LIGHT = 0.5f; // Analog value (0 to 1 scale) to light LED.
CSTritt 0:2254358fce87 19
CSTritt 0:2254358fce87 20 AnalogIn analog_value(A0);
CSTritt 0:2254358fce87 21
CSTritt 0:2254358fce87 22 DigitalOut led(LED1);
CSTritt 0:2254358fce87 23
CSTritt 0:2254358fce87 24 int main() {
CSTritt 0:2254358fce87 25 float value; // Value to be read and sent to serial port.
CSTritt 0:2254358fce87 26
CSTritt 3:f879eeeb5e8d 27 printf("\nAnalog to serial example.\n");
CSTritt 0:2254358fce87 28
CSTritt 0:2254358fce87 29 while(true) {
CSTritt 0:2254358fce87 30 value = analog_value.read(); // Read the analog input value (0 to 1)
CSTritt 3:f879eeeb5e8d 31 printf("%f\n", value); // Send value as text via serial port.
CSTritt 3:f879eeeb5e8d 32 if (value > LIGHT) { // Activate built-in LED based on LIGHT value.
CSTritt 0:2254358fce87 33 led.write(HIGH);
CSTritt 0:2254358fce87 34 }
CSTritt 0:2254358fce87 35 else {
CSTritt 0:2254358fce87 36 led.write(LOW);
CSTritt 0:2254358fce87 37 }
CSTritt 3:f879eeeb5e8d 38 wait(WAIT); // Wait WAIT seconds.
CSTritt 0:2254358fce87 39 }
CSTritt 3:f879eeeb5e8d 40 }