Lauren Taylor / Mbed 2 deprecated phototransistor

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Dependencies:   mbed

main.cpp@3:9d9628bd3514, 2018-03-08 (annotated)

Committer:
oldmanturtle
Date:
Thu Mar 08 18:48:30 2018 +0000
Revision:
3:9d9628bd3514
Parent:
2:c76b070c2a55
Child:
4:327441ad8cf6
LED with Phototransistor Reading

Who changed what in which revision?

UserRevisionLine numberNew contents of line
_laurentaylorrr 0:46b2c955924b 1 #include "mbed.h"
_laurentaylorrr 0:46b2c955924b 2 AnalogIn lightSensor(p20);
_laurentaylorrr 1:279fcab0c394 3 DigitalOut ledRed(p25);
oldmanturtle 2:c76b070c2a55 4 DigitalOut ledBlue(p26);
oldmanturtle 2:c76b070c2a55 5
oldmanturtle 3:9d9628bd3514 6 Serial pc(USBTX,USBRX);
_laurentaylorrr 1:279fcab0c394 7
oldmanturtle 3:9d9628bd3514 8 float checkLightSensor(int n);
oldmanturtle 3:9d9628bd3514 9
oldmanturtle 3:9d9628bd3514 10 void ledSwitch();
oldmanturtle 3:9d9628bd3514 11
_laurentaylorrr 0:46b2c955924b 12 int main() {
oldmanturtle 3:9d9628bd3514 13 int checkTimes = 10;
oldmanturtle 3:9d9628bd3514 14 ledRed = true;
oldmanturtle 3:9d9628bd3514 15 ledBlue = false;
_laurentaylorrr 1:279fcab0c394 16 while(1) {
oldmanturtle 3:9d9628bd3514 17 ledSwitch();
oldmanturtle 3:9d9628bd3514 18 pc.printf("%.4f\r\n", checkLightSensor(checkTimes));
oldmanturtle 3:9d9628bd3514 19 wait(0.2);
oldmanturtle 3:9d9628bd3514 20 ledSwitch();
oldmanturtle 3:9d9628bd3514 21 pc.printf("%.4f\r\n", checkLightSensor(checkTimes));
_laurentaylorrr 0:46b2c955924b 22 wait(0.2);
_laurentaylorrr 0:46b2c955924b 23 }
oldmanturtle 3:9d9628bd3514 24 }
oldmanturtle 3:9d9628bd3514 25
oldmanturtle 3:9d9628bd3514 26 // Average n readings of the light sensor
oldmanturtle 3:9d9628bd3514 27 float checkLightSensor(int n){
oldmanturtle 3:9d9628bd3514 28 float x;
oldmanturtle 3:9d9628bd3514 29 x = 0;
oldmanturtle 3:9d9628bd3514 30 for (int i = 0; i<n; i++)
oldmanturtle 3:9d9628bd3514 31 x = x + lightSensor;
oldmanturtle 3:9d9628bd3514 32 x = x/n;
oldmanturtle 3:9d9628bd3514 33 return x;
oldmanturtle 3:9d9628bd3514 34 }
oldmanturtle 3:9d9628bd3514 35
oldmanturtle 3:9d9628bd3514 36 void ledSwitch(){
oldmanturtle 3:9d9628bd3514 37 ledBlue = !ledBlue;
oldmanturtle 3:9d9628bd3514 38 ledRed = !ledRed;
oldmanturtle 3:9d9628bd3514 39 }