Xinda Lin / Mbed 2 deprecated HW2-3

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main.cpp@0:f6d212e09078, 2010-12-01 (annotated)

Committer:
linxinda
Date:
Wed Dec 01 05:29:04 2010 +0000
Revision:
0:f6d212e09078
hw2.3 xinda

Who changed what in which revision?

UserRevisionLine numberNew contents of line
linxinda 0:f6d212e09078 1 #include "mbed.h"
linxinda 0:f6d212e09078 2
linxinda 0:f6d212e09078 3 #define numsamples 1
linxinda 0:f6d212e09078 4 int touchSense1(void);
linxinda 0:f6d212e09078 5 int touchSense2(void);
linxinda 0:f6d212e09078 6 void readSerial();
linxinda 0:f6d212e09078 7 char touchDetect ();
linxinda 0:f6d212e09078 8
linxinda 0:f6d212e09078 9 DigitalOut myled1(LED1);
linxinda 0:f6d212e09078 10 DigitalOut myled2(LED2);
linxinda 0:f6d212e09078 11 DigitalOut myled3(LED3);
linxinda 0:f6d212e09078 12 AnalogIn input1(p20);
linxinda 0:f6d212e09078 13 DigitalIn charger1(p19);
linxinda 0:f6d212e09078 14 DigitalOut ground1(p18);
linxinda 0:f6d212e09078 15 AnalogIn input2(p17);
linxinda 0:f6d212e09078 16 DigitalIn charger2(p16);
linxinda 0:f6d212e09078 17 DigitalOut ground2(p15);
linxinda 0:f6d212e09078 18
linxinda 0:f6d212e09078 19
linxinda 0:f6d212e09078 20 Serial pc(USBTX, USBRX); // tx, rx
linxinda 0:f6d212e09078 21
linxinda 0:f6d212e09078 22 char *serial = new char [100];
linxinda 0:f6d212e09078 23
linxinda 0:f6d212e09078 24 int main() {
linxinda 0:f6d212e09078 25
linxinda 0:f6d212e09078 26 pc.attach (&readSerial); //Foreground: read the serial
linxinda 0:f6d212e09078 27
linxinda 0:f6d212e09078 28
linxinda 0:f6d212e09078 29 while (1){ //Background: compare the serial value and user input.
linxinda 0:f6d212e09078 30 int i=1,j=0;
linxinda 0:f6d212e09078 31 while (serial[j]!='E') { //Print the host value;
linxinda 0:f6d212e09078 32 pc.printf ("%c", serial[j]);
linxinda 0:f6d212e09078 33 j++;
linxinda 0:f6d212e09078 34 }
linxinda 0:f6d212e09078 35 pc.printf ("E");
linxinda 0:f6d212e09078 36
linxinda 0:f6d212e09078 37 while (1) {
linxinda 0:f6d212e09078 38 pc.printf (" The next input should be :"); //Hint
linxinda 0:f6d212e09078 39 pc.printf ("%c", serial[i]);
linxinda 0:f6d212e09078 40 if (serial[i]=='E'){
linxinda 0:f6d212e09078 41 pc.printf (" MATCH ");
linxinda 0:f6d212e09078 42 pc.printf ("\r\n");
linxinda 0:f6d212e09078 43 i=1;
linxinda 0:f6d212e09078 44 break;
linxinda 0:f6d212e09078 45 }
linxinda 0:f6d212e09078 46 else if (serial[i]==touchDetect()){
linxinda 0:f6d212e09078 47 i++;
linxinda 0:f6d212e09078 48 wait (0.5);
linxinda 0:f6d212e09078 49 }
linxinda 0:f6d212e09078 50 else{
linxinda 0:f6d212e09078 51 pc.printf (" TOUCH ERROR ");
linxinda 0:f6d212e09078 52 pc.printf ("\r\n"); //If the user touch both sensor, the retun value is 3, which will lead to touch error.
linxinda 0:f6d212e09078 53 break;} //Also, if the user mistouch the sensor, it's also a touch error.
linxinda 0:f6d212e09078 54 }
linxinda 0:f6d212e09078 55 }
linxinda 0:f6d212e09078 56 }
linxinda 0:f6d212e09078 57
linxinda 0:f6d212e09078 58 void readSerial()
linxinda 0:f6d212e09078 59 {
linxinda 0:f6d212e09078 60 char b;
linxinda 0:f6d212e09078 61 int flag=1,i=0;
linxinda 0:f6d212e09078 62 b=pc.getc();
linxinda 0:f6d212e09078 63 pc.printf("%c",b);
linxinda 0:f6d212e09078 64 if (b=='S'){
linxinda 0:f6d212e09078 65 serial[0]='S';
linxinda 0:f6d212e09078 66 i++;
linxinda 0:f6d212e09078 67 while (flag){
linxinda 0:f6d212e09078 68 serial[i]=pc.getc();
linxinda 0:f6d212e09078 69 pc.printf ("%c",serial[i]);
linxinda 0:f6d212e09078 70 if (serial[i]=='E'){
linxinda 0:f6d212e09078 71 flag=0;}
linxinda 0:f6d212e09078 72 else if (serial[i]=='S'){
linxinda 0:f6d212e09078 73 pc.printf (" HOST ERROR \r\n "); //Host sent two S before E. Host error.
linxinda 0:f6d212e09078 74 break;}
linxinda 0:f6d212e09078 75 i++;
linxinda 0:f6d212e09078 76 }
linxinda 0:f6d212e09078 77 }
linxinda 0:f6d212e09078 78 }
linxinda 0:f6d212e09078 79
linxinda 0:f6d212e09078 80 char touchDetect () //Detect the user input
linxinda 0:f6d212e09078 81 {
linxinda 0:f6d212e09078 82 while (1) {
linxinda 0:f6d212e09078 83 if (touchSense1()){
linxinda 0:f6d212e09078 84 pc.printf (" T1 "); //T1 means sensor1 is pressed
linxinda 0:f6d212e09078 85 if (touchSense2()){
linxinda 0:f6d212e09078 86 return '3';
linxinda 0:f6d212e09078 87 }
linxinda 0:f6d212e09078 88 while (touchSense1()){
linxinda 0:f6d212e09078 89 wait(0.5);}
linxinda 0:f6d212e09078 90 return '1';
linxinda 0:f6d212e09078 91 }
linxinda 0:f6d212e09078 92 else if (touchSense2()){
linxinda 0:f6d212e09078 93 pc.printf (" T0 ");
linxinda 0:f6d212e09078 94 if (touchSense1()){
linxinda 0:f6d212e09078 95 return '3';
linxinda 0:f6d212e09078 96 }
linxinda 0:f6d212e09078 97 while (touchSense2()){
linxinda 0:f6d212e09078 98 wait(0.5);}
linxinda 0:f6d212e09078 99 return '0';
linxinda 0:f6d212e09078 100
linxinda 0:f6d212e09078 101 }
linxinda 0:f6d212e09078 102 wait (0.05);
linxinda 0:f6d212e09078 103 }
linxinda 0:f6d212e09078 104 }
linxinda 0:f6d212e09078 105
linxinda 0:f6d212e09078 106 int touchSense1(void)
linxinda 0:f6d212e09078 107 {
linxinda 0:f6d212e09078 108 float sample;
linxinda 0:f6d212e09078 109 ground1 = 0;
linxinda 0:f6d212e09078 110 charger1.mode(PullUp);
linxinda 0:f6d212e09078 111 charger1.mode(PullNone);
linxinda 0:f6d212e09078 112 sample=input1.read();
linxinda 0:f6d212e09078 113 if (sample < 0.3) {
linxinda 0:f6d212e09078 114 return 1;
linxinda 0:f6d212e09078 115 } else {
linxinda 0:f6d212e09078 116 return 0;
linxinda 0:f6d212e09078 117 }
linxinda 0:f6d212e09078 118 }
linxinda 0:f6d212e09078 119
linxinda 0:f6d212e09078 120 int touchSense2(void)
linxinda 0:f6d212e09078 121 {
linxinda 0:f6d212e09078 122 float sample;
linxinda 0:f6d212e09078 123 ground2 = 0;
linxinda 0:f6d212e09078 124 charger2.mode(PullUp);
linxinda 0:f6d212e09078 125 charger2.mode(PullNone);
linxinda 0:f6d212e09078 126 sample=input2.read();
linxinda 0:f6d212e09078 127 if (sample < 0.3) {
linxinda 0:f6d212e09078 128 return 1;
linxinda 0:f6d212e09078 129 } else {
linxinda 0:f6d212e09078 130 return 0;
linxinda 0:f6d212e09078 131 }
linxinda 0:f6d212e09078 132 }