main.cpp

00001 #include "mbed.h"
00002 #include "EthernetInterface.h"
00003 #include "Websocket.h"
00004 #include "stdio.h"
00005 #include "string.h"
00006 
00007 //Used to Log to the PC
00008 Serial pc(USBTX,USBRX);
00009 
00010 //Input Pin for the Paddle Wheel Flow Meter
00011 DigitalIn pulse(p8);
00012 
00013 // Pin Outs for Solenoids
00014 DigitalOut Ctrl(p9);
00015 DigitalOut Ctrl2(p10);
00016 
00017 //
00018 #define PULSE_VOL 4.50 // More flow due to angle of paddle wheel Pour 1
00019 #define PULSE_VOL2 6.75 // Less flow due to angle of paddle wheel Pour 2
00020 
00021 //Function Declarations
00022 void pourOne(float milliliters);
00023 void pourTwo(float milliliters);
00024 
00025 /*
00026     The main function opens a web socket client and listens for a preset series
00027     of recipies. If one is found, it calls functions to pour liquid.
00028 */
00029 int main() {
00030     pc.printf("Starting BarBot!\r\n");
00031     
00032     // Close Both Solenoids
00033     Ctrl = 0;
00034     Ctrl2 = 0;
00035     
00036     // Receive Buffer
00037     char recv[30];
00038     char recipe[] = "Rum & Coke";
00039     char recipe2[] = "Whiskey Ginger";
00040     char recipe3[] = "Whiskey Neat";
00041     
00042     // Ethernet Interfacing
00043     EthernetInterface eth;
00044     eth.init(); //Use DHCP
00045     eth.connect();
00046     pc.printf("IP Address is %s\n\r", eth.getIPAddress());
00047  
00048     // Open a Websocket
00049     Websocket ws("ws://sockets.mbed.org:443/ws/sid/ro"); //This Websocket server is provided by MBED for prototyping
00050     ws.connect();
00051     
00052     // Wait to receive an order from websocket
00053     while (1) {
00054         
00055         if(ws.read(recv)) {
00056             pc.printf("%s\r\n", recv);
00057 
00058             // Recipe based process
00059             if(strcmp(recv, recipe) == 0) {
00060                 pourOne(132);
00061                 pourTwo(44);    
00062             }
00063             else if(strcmp(recv, recipe2) == 0) {
00064                 pourOne(0);
00065                 pourTwo(88);   
00066             }
00067             else if(strcmp(recv, recipe3) == 0) {
00068                 pourOne(88);
00069                 pourTwo(0);
00070             }
00071         } 
00072         
00073         wait(1.0);
00074     }
00075     
00076 }
00077 
00078 void pourOne(float milliliters) {
00079     
00080     pc.printf("Pour One\r\n");
00081     
00082     //pouring an empty amount (neat drinks)
00083     if(milliliters <= 0) {
00084         return;    
00085     } 
00086     
00087     int pulses = 0;
00088     bool lastPulse = pulse;
00089     bool thisPulse;
00090     float volume = 0;
00091     
00092     //open solenoid one
00093     Ctrl = 1;
00094     
00095     while(volume < milliliters) {
00096         thisPulse = pulse;
00097         
00098         //check to see if pulse has changed since the last time
00099         if(thisPulse != lastPulse) {
00100             pulses += 1;    
00101         }
00102         lastPulse = thisPulse;
00103         
00104         //increase the volume
00105         volume = pulses * PULSE_VOL;
00106         
00107         pc.printf("Poured %f From First Bottle\r\n", volume);    
00108     }
00109     
00110     
00111     //close solenoid one
00112     Ctrl = 0;    
00113 }
00114 
00115 void pourTwo(float milliliters) {
00116     
00117     pc.printf("Pour Two\r\n");
00118     
00119     //pouring an empty amount (neat drinks)
00120     if(milliliters <= 0) {
00121         return;    
00122     } 
00123     
00124     int pulses = 0;
00125     bool lastPulse = pulse;
00126     bool thisPulse;
00127     float volume = 0;
00128     
00129     //open solenoid two
00130     Ctrl2 = 1;
00131     
00132     while(volume < milliliters) {
00133         thisPulse = pulse;
00134         
00135         //check to see if pulse has changed since last time
00136         if(thisPulse != lastPulse) {
00137             pulses += 1;    
00138         }
00139         
00140         lastPulse = thisPulse;
00141         
00142         //increase the volume
00143         volume = pulses * PULSE_VOL2;
00144         
00145         pc.printf("Poured %f From Second Bottle\r\n", volume);    
00146     }
00147     
00148     //close solenoid two
00149     Ctrl2 = 0;
00150 }