Stage-1 Students SoCEM / Mbed 2 deprecated Task422Solution

Task 4.2.2 Solution

Dependencies:   mbed

main.cpp@0:6d9e82b27127, 2015-09-24 (annotated)

Committer:
noutram
Date:
Thu Sep 24 12:29:49 2015 +0000
Revision:
0:6d9e82b27127
Initial version 24-09-2015

Who changed what in which revision?

UserRevisionLine numberNew contents of line
noutram 0:6d9e82b27127 1 #include "mbed.h"
noutram 0:6d9e82b27127 2
noutram 0:6d9e82b27127 3 #define kRED (1 << 2) //4
noutram 0:6d9e82b27127 4 #define kYELLOW (1 << 1) //2
noutram 0:6d9e82b27127 5 #define kGREEN (1 << 0) //1
noutram 0:6d9e82b27127 6
noutram 0:6d9e82b27127 7 //Global objects
noutram 0:6d9e82b27127 8 BusOut binaryOutput(D5, D6, D7);
noutram 0:6d9e82b27127 9 DigitalIn SW1(D3);
noutram 0:6d9e82b27127 10 DigitalIn SW2(D4);
noutram 0:6d9e82b27127 11
noutram 0:6d9e82b27127 12 AnalogIn POT_ADC_In(A0);
noutram 0:6d9e82b27127 13 AnalogIn LDD_ADC_In(A1);
noutram 0:6d9e82b27127 14 float fPOT, fLDR = 0.0;
noutram 0:6d9e82b27127 15
noutram 0:6d9e82b27127 16 //Main function
noutram 0:6d9e82b27127 17 int main() {
noutram 0:6d9e82b27127 18
noutram 0:6d9e82b27127 19 while(1) {
noutram 0:6d9e82b27127 20 unsigned op = 0u;
noutram 0:6d9e82b27127 21
noutram 0:6d9e82b27127 22 //Read ADC
noutram 0:6d9e82b27127 23 fPOT = POT_ADC_In; //Threshold
noutram 0:6d9e82b27127 24 fLDR = LDD_ADC_In; //Light reading
noutram 0:6d9e82b27127 25
noutram 0:6d9e82b27127 26 //Write to terminal
noutram 0:6d9e82b27127 27 printf("POT = %6.4f\tLDR = %6.4f\n", fPOT, fLDR);
noutram 0:6d9e82b27127 28
noutram 0:6d9e82b27127 29 if (fLDR < 0.1f) {
noutram 0:6d9e82b27127 30 op = kRED | kYELLOW | kGREEN;
noutram 0:6d9e82b27127 31 } else if (fLDR < 0.15f) {
noutram 0:6d9e82b27127 32 op = kYELLOW | kRED;
noutram 0:6d9e82b27127 33 } else if (fLDR < 0.2f) {
noutram 0:6d9e82b27127 34 op = kRED;
noutram 0:6d9e82b27127 35 } else {
noutram 0:6d9e82b27127 36 op = 0;
noutram 0:6d9e82b27127 37 }
noutram 0:6d9e82b27127 38
noutram 0:6d9e82b27127 39 //Write to port
noutram 0:6d9e82b27127 40 binaryOutput = op;
noutram 0:6d9e82b27127 41
noutram 0:6d9e82b27127 42 //Wait
noutram 0:6d9e82b27127 43 wait(0.1);
noutram 0:6d9e82b27127 44
noutram 0:6d9e82b27127 45 } //end while(1)
noutram 0:6d9e82b27127 46 } //end main