Uses the analog input value to control how many LEDs are on
Dependencies:
mbed
Diff: main.cpp
- Revision:
- 0:7576b8ed15e8
- Child:
- 1:1e1de02b30cc
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Sep 25 02:04:21 2018 +0000
@@ -0,0 +1,61 @@
+// Cecilia Schneider, OCE 360, September 24,2018
+// HW #2, exercise 2, Analog I/O
+// Use the analog input value to control how many LEDs are on
+#include "mbed.h"
+
+Serial pc(USBTX, USBRX);
+AnalogIn Ain(p20); //Potentiometer input is on pin 20, this value will determine which LEDs are on
+DigitalOut rled(p5); //LEDs will light based on the analog input
+DigitalOut yled(p7);
+DigitalOut gled(p9);
+DigitalOut bled(p11);
+float ADCdata;
+
+int main() {
+ pc.printf("ADC Data Values... \n\r");
+ while (1) {
+ ADCdata = Ain;
+ wait (0.5); //Updates every half second
+ if(Ain <= 0.2f) { //if the analog input is less than or equal to 0.2 all LEDs will be off
+ pc.printf("%3.2f",ADCdata); //displays analog input value
+ pc.printf(" All LEDs OFF. Voltage at pin 20: "); //displays which LEDs should be lit
+ pc.printf("%3.2f \n\r", ADCdata*3.3); //displays actual voltage at pin 20
+ rled = 0;
+ yled = 0;
+ gled = 0;
+ bled = 0;
+ } else if(0.2f<Ain, Ain<=0.4f) { //if Ain is between 0.2 and 0.4 only the red LED will be on
+ pc.printf("%3.2f",ADCdata); //displays analog input value
+ pc.printf(" Red LED ON. Voltage at pin 20: "); //displays which LEDs should be lit
+ pc.printf("%3.2f \n\r", ADCdata*3.3); //displays actual voltage at pin 20
+ rled = 1;
+ yled = 0;
+ gled = 0;
+ bled = 0;
+ } else if(0.4f<Ain, Ain<=0.6f) { //if Ain is between 0.4 and 0.6 the red and yellow LEDs will be on
+ pc.printf("%3.2f",ADCdata); //displays analog input value
+ pc.printf(" Red and yellow LEDs ON. Voltage at pin 20: "); //displays which LEDs should be lit
+ pc.printf("%3.2f \n\r", ADCdata*3.3); //displays actual voltage at pin 20
+ rled = 1;
+ yled = 1;
+ gled = 0;
+ bled = 0;
+ } else if(0.6f<Ain, Ain<=0.8f) { //if Ain is between 0.6 and 0.8 the red yellow and green LEDs will be on
+ pc.printf("%3.2f",ADCdata); //displays analog input value
+ pc.printf(" Red, yellow, and green LEDs ON. Voltage at pin 20: "); //displays which LEDs should be lit
+ pc.printf("%3.2f \n\r", ADCdata*3.3); //displays actual voltage at pin 20
+ rled = 1;
+ yled = 1;
+ gled = 1;
+ bled = 0;
+ } else if(0.8f<Ain, Ain<=1.0f) { //if Ain is greater than 0.8 all LEDs will be on
+ pc.printf("%3.2f",ADCdata); //displays analog input value
+ pc.printf(" Red, yellow, green and blue LEDs ON. Voltage at pin 20: "); //displays which LEDs should be lit
+ pc.printf("%3.2f \n\r", ADCdata*3.3); //displays actual voltage at pin 20
+ rled = 1;
+ yled = 1;
+ gled = 1;
+ bled = 1;
+ }
+ }
+}
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