Vincent Crabtree / Mbed 2 deprecated ColdStorageSystem

System to manage inventory for a cooler. Allows real time check in of products via RFID, as well as check out. Also includes a scale to weigh products upon check out, and has a real time temperature tracking system that sounds an alert if the cooler gets too hot.

Dependencies:   DHT11 HX711 MFRC522 SDFileSystemEditied mbed

scale.cpp@0:ad334aa4c7c4, 2018-03-07 (annotated)

Committer:
vincentrc
Date:
Wed Mar 07 17:52:23 2018 +0000
Revision:
0:ad334aa4c7c4
Initial commit.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vincentrc 0:ad334aa4c7c4 1
vincentrc 0:ad334aa4c7c4 2 #include "functions.h"
vincentrc 0:ad334aa4c7c4 3 #include "HX711.h"
vincentrc 0:ad334aa4c7c4 4 #include <stdio.h>
vincentrc 0:ad334aa4c7c4 5
vincentrc 0:ad334aa4c7c4 6 float scale(HX711 scale)
vincentrc 0:ad334aa4c7c4 7 {
vincentrc 0:ad334aa4c7c4 8 float weight;
vincentrc 0:ad334aa4c7c4 9 int x;
vincentrc 0:ad334aa4c7c4 10
vincentrc 0:ad334aa4c7c4 11 fflush(stdin);
vincentrc 0:ad334aa4c7c4 12 getchar();
vincentrc 0:ad334aa4c7c4 13 printf("\n\r\n\rPlease remove all weight from scale, "
vincentrc 0:ad334aa4c7c4 14 "then press any button to zero the scale\n\r\n\r");
vincentrc 0:ad334aa4c7c4 15 getchar();
vincentrc 0:ad334aa4c7c4 16 scale.tare();
vincentrc 0:ad334aa4c7c4 17
vincentrc 0:ad334aa4c7c4 18 printf("\n\r\n\rPress any button again to begin weighing!\n\r\n\r");
vincentrc 0:ad334aa4c7c4 19 getchar();
vincentrc 0:ad334aa4c7c4 20
vincentrc 0:ad334aa4c7c4 21
vincentrc 0:ad334aa4c7c4 22 weight = scale.getGram();
vincentrc 0:ad334aa4c7c4 23
vincentrc 0:ad334aa4c7c4 24
vincentrc 0:ad334aa4c7c4 25 //Handles negligible weight and calibration factor
vincentrc 0:ad334aa4c7c4 26 if((weight < 0.5) && (weight > -0.5))
vincentrc 0:ad334aa4c7c4 27 weight =0;
vincentrc 0:ad334aa4c7c4 28 else
vincentrc 0:ad334aa4c7c4 29 weight *= (15.625);
vincentrc 0:ad334aa4c7c4 30
vincentrc 0:ad334aa4c7c4 31 //Converts to pounds
vincentrc 0:ad334aa4c7c4 32 weight *= 0.0022046;
vincentrc 0:ad334aa4c7c4 33
vincentrc 0:ad334aa4c7c4 34 printf("\n\r\n\rWeight: %.2f lbs\n\r\n\r", weight);
vincentrc 0:ad334aa4c7c4 35
vincentrc 0:ad334aa4c7c4 36
vincentrc 0:ad334aa4c7c4 37 return weight;
vincentrc 0:ad334aa4c7c4 38 }