Akhil Nair / Mbed OS lab5p1

lab5p1 final version

Dependencies:   TSI

main.cpp@6:007c89b67d67, 2019-02-28 (annotated)

Committer:
anair12345
Date:
Thu Feb 28 17:04:08 2019 +0000
Revision:
6:007c89b67d67
Parent:
5:2a9a3d74a1d8 
lab5p1 final version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WilliamMarshQMUL 0:4374caa1ef17 1 #include "mbed.h"
WilliamMarshQMUL 0:4374caa1ef17 2 #include "TSISensor.h"
WilliamMarshQMUL 0:4374caa1ef17 3
WilliamMarshQMUL 0:4374caa1ef17 4 // Example program for lab 5
WilliamMarshQMUL 0:4374caa1ef17 5 // -------------------------
WilliamMarshQMUL 0:4374caa1ef17 6 // A value is read from the touch sensor and use
WilliamMarshQMUL 0:4374caa1ef17 7 // to control two LEDs
WilliamMarshQMUL 0:4374caa1ef17 8 // The value is also output to the serial interface
WilliamMarshQMUL 0:4374caa1ef17 9
WilliamMarshQMUL 0:4374caa1ef17 10 Serial pc(USBTX, USBRX); // tx, rx
WilliamMarshQMUL 0:4374caa1ef17 11 DigitalOut redLED(LED_RED);
WilliamMarshQMUL 0:4374caa1ef17 12 DigitalOut greenLED(LED_GREEN);
anair12345 6:007c89b67d67 13 DigitalOut blueLED(LED_BLUE);
WilliamMarshQMUL 0:4374caa1ef17 14 TSISensor tsi;
WilliamMarshQMUL 0:4374caa1ef17 15
WilliamMarshQMUL 0:4374caa1ef17 16 Thread redThread ; // thread for red LED
WilliamMarshQMUL 0:4374caa1ef17 17 Thread greenThread ; // thread for green LED
anair12345 6:007c89b67d67 18 Thread blueThread;
anair12345 6:007c89b67d67 19 Thread whiteThread;
WilliamMarshQMUL 5:2a9a3d74a1d8 20
WilliamMarshQMUL 5:2a9a3d74a1d8 21 # define REDFLAG 0x01
WilliamMarshQMUL 5:2a9a3d74a1d8 22 # define GREENFLAG 0x02
anair12345 6:007c89b67d67 23 # define BLUEFLAG 0x04
anair12345 6:007c89b67d67 24 # define WHITEFLAG 0x08
WilliamMarshQMUL 5:2a9a3d74a1d8 25 EventFlags signals; // event flags for signalling; 2 used
anair12345 6:007c89b67d67 26
anair12345 6:007c89b67d67 27 enum redLEDState {REDOn,REDOff};
WilliamMarshQMUL 0:4374caa1ef17 28 void red_thread() { // method to run in thread
anair12345 6:007c89b67d67 29 redLEDState redstate = REDOff;
anair12345 6:007c89b67d67 30 while (true) {
anair12345 6:007c89b67d67 31 switch(redstate){
anair12345 6:007c89b67d67 32 case REDOff:
anair12345 6:007c89b67d67 33 signals.wait_any(REDFLAG);
anair12345 6:007c89b67d67 34 redLED = false;
anair12345 6:007c89b67d67 35 wait(0.5);
anair12345 6:007c89b67d67 36 redstate = REDOn;
anair12345 6:007c89b67d67 37 break;
anair12345 6:007c89b67d67 38 case REDOn:
anair12345 6:007c89b67d67 39 redLED = true ; // turn on
anair12345 6:007c89b67d67 40 signals.clear(REDFLAG);
anair12345 6:007c89b67d67 41 redstate = REDOff;
anair12345 6:007c89b67d67 42 }
anair12345 6:007c89b67d67 43 }
anair12345 6:007c89b67d67 44 }
anair12345 6:007c89b67d67 45 enum greenLEDState {GREENOn,GREENOff};
anair12345 6:007c89b67d67 46 void green_thread() { // method to run in thread
anair12345 6:007c89b67d67 47 greenLEDState greenstate = GREENOff;
WilliamMarshQMUL 0:4374caa1ef17 48 while (true) {
anair12345 6:007c89b67d67 49 switch(greenstate){
anair12345 6:007c89b67d67 50 case GREENOff:
anair12345 6:007c89b67d67 51 signals.wait_any(GREENFLAG);
anair12345 6:007c89b67d67 52 greenLED = false ;
anair12345 6:007c89b67d67 53 wait(0.5);
anair12345 6:007c89b67d67 54 greenstate = GREENOn;
anair12345 6:007c89b67d67 55 break;
anair12345 6:007c89b67d67 56 case GREENOn:
anair12345 6:007c89b67d67 57 greenLED = true ; // turn on
anair12345 6:007c89b67d67 58 signals.clear(GREENFLAG);
anair12345 6:007c89b67d67 59 greenstate = GREENOff;
anair12345 6:007c89b67d67 60 }
anair12345 6:007c89b67d67 61 }
anair12345 6:007c89b67d67 62 }
anair12345 6:007c89b67d67 63 enum blueLEDState {BLUEOn,BLUEOff};
anair12345 6:007c89b67d67 64 void blue_thread() { // method to run in thread
anair12345 6:007c89b67d67 65 blueLEDState bluestate = BLUEOff;
anair12345 6:007c89b67d67 66 while (true) {
anair12345 6:007c89b67d67 67 switch(bluestate){
anair12345 6:007c89b67d67 68 case BLUEOff:
anair12345 6:007c89b67d67 69 signals.wait_any(BLUEFLAG);
anair12345 6:007c89b67d67 70 blueLED = false ;
anair12345 6:007c89b67d67 71 wait(0.5);
anair12345 6:007c89b67d67 72 bluestate = BLUEOn;
anair12345 6:007c89b67d67 73 break;
anair12345 6:007c89b67d67 74 case BLUEOn:
anair12345 6:007c89b67d67 75 blueLED = true ; // turn on
anair12345 6:007c89b67d67 76 signals.clear(BLUEFLAG);
anair12345 6:007c89b67d67 77 bluestate = BLUEOff;
anair12345 6:007c89b67d67 78 }
anair12345 6:007c89b67d67 79 }
anair12345 6:007c89b67d67 80 }
anair12345 6:007c89b67d67 81 enum whiteLEDState {WHITEOn,WHITEOff};
anair12345 6:007c89b67d67 82 void white_thread() { // method to run in thread
anair12345 6:007c89b67d67 83 whiteLEDState whitestate = WHITEOff;
anair12345 6:007c89b67d67 84 while (true) {
anair12345 6:007c89b67d67 85 switch(whitestate){
anair12345 6:007c89b67d67 86 case WHITEOff:
anair12345 6:007c89b67d67 87 signals.wait_any(WHITEFLAG);
anair12345 6:007c89b67d67 88 blueLED = false ; // turn on
anair12345 6:007c89b67d67 89 redLED = false ;
anair12345 6:007c89b67d67 90 greenLED = false ;
anair12345 6:007c89b67d67 91 wait(0.5);
anair12345 6:007c89b67d67 92 whitestate = WHITEOn;
anair12345 6:007c89b67d67 93 break;
anair12345 6:007c89b67d67 94 case WHITEOn:
anair12345 6:007c89b67d67 95 blueLED = true ; // turn off
anair12345 6:007c89b67d67 96 redLED = true ;
anair12345 6:007c89b67d67 97 greenLED = true ;
anair12345 6:007c89b67d67 98 signals.clear(WHITEFLAG);
anair12345 6:007c89b67d67 99 whitestate = WHITEOff;
anair12345 6:007c89b67d67 100 }
WilliamMarshQMUL 0:4374caa1ef17 101 }
WilliamMarshQMUL 0:4374caa1ef17 102 }
WilliamMarshQMUL 0:4374caa1ef17 103
anair12345 6:007c89b67d67 104 enum states {LeftIn,LeftOut,RightIn,RightOut,None};
WilliamMarshQMUL 0:4374caa1ef17 105
WilliamMarshQMUL 0:4374caa1ef17 106 int main(void) {
WilliamMarshQMUL 0:4374caa1ef17 107 redLED = true ; // turn off
WilliamMarshQMUL 0:4374caa1ef17 108 greenLED = true ; // turn off
anair12345 6:007c89b67d67 109 blueLED = true ;
WilliamMarshQMUL 5:2a9a3d74a1d8 110 redThread.start(red_thread) ; // start the red thread
WilliamMarshQMUL 5:2a9a3d74a1d8 111 greenThread.start(green_thread) ; // start the green thread
anair12345 6:007c89b67d67 112 blueThread.start(blue_thread);
anair12345 6:007c89b67d67 113 whiteThread.start(white_thread);
anair12345 6:007c89b67d67 114
anair12345 6:007c89b67d67 115 states State = None;
WilliamMarshQMUL 0:4374caa1ef17 116
WilliamMarshQMUL 0:4374caa1ef17 117 while (true) {
WilliamMarshQMUL 0:4374caa1ef17 118 uint8_t d = tsi.readDistance() ; // Distance is between 0 and 39
WilliamMarshQMUL 0:4374caa1ef17 119 // When no touch --> 0
WilliamMarshQMUL 0:4374caa1ef17 120 // Left --> low value Right --> high value
WilliamMarshQMUL 0:4374caa1ef17 121 pc.printf("%d", d) ;
WilliamMarshQMUL 1:e6ffa08ad8bf 122 pc.putc(' ') ;
anair12345 6:007c89b67d67 123 wait(0.1);
anair12345 6:007c89b67d67 124 switch(State){
anair12345 6:007c89b67d67 125 case None:
anair12345 6:007c89b67d67 126 if (d > 3 && d < 9) {signals.set(REDFLAG);State = LeftOut;}
anair12345 6:007c89b67d67 127 else if (d > 13 && d < 19) {signals.set(GREENFLAG) ;State = LeftIn; }
anair12345 6:007c89b67d67 128 else if (d > 23 && d < 29) {signals.set(BLUEFLAG) ;State = RightIn;}
anair12345 6:007c89b67d67 129 else if (d > 33) {signals.set(WHITEFLAG) ;State = RightOut;}
anair12345 6:007c89b67d67 130 break;
anair12345 6:007c89b67d67 131 case LeftOut:
anair12345 6:007c89b67d67 132 if (d < 3 || d >9) State = None;break;
anair12345 6:007c89b67d67 133 case LeftIn:
anair12345 6:007c89b67d67 134 if (d < 13 || d >19) State = None;break;
anair12345 6:007c89b67d67 135 case RightIn:
anair12345 6:007c89b67d67 136 if (d < 23 || d >29) State = None;break;
anair12345 6:007c89b67d67 137 case RightOut:
anair12345 6:007c89b67d67 138 if (d < 33) State = None;break;
anair12345 6:007c89b67d67 139 }
WilliamMarshQMUL 0:4374caa1ef17 140 }
WilliamMarshQMUL 0:4374caa1ef17 141 }