ESE519 / Mbed 2 deprecated Lab2_part4

new

Dependencies:   mbed

main.cpp@1:461a4f04db9b, 2015-02-19 (annotated)

Committer:
jaredwil
Date:
Thu Feb 19 18:33:11 2015 +0000
Revision:
1:461a4f04db9b
Parent:
0:89cc1300ce7e
Child:
2:94a34bcf8f09
new;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jaredwil 0:89cc1300ce7e 1 #include "mbed.h"
jaredwil 0:89cc1300ce7e 2 #include <map>
jaredwil 0:89cc1300ce7e 3 #include <string>
jaredwil 0:89cc1300ce7e 4
jaredwil 0:89cc1300ce7e 5 //Initialize serial comms
jaredwil 0:89cc1300ce7e 6 Serial pc(USBTX, USBRX);
jaredwil 0:89cc1300ce7e 7
jaredwil 1:461a4f04db9b 8 PwmOut PWMh(p22);
jaredwil 1:461a4f04db9b 9 //because both use same ticker make a new manual pmw
jaredwil 1:461a4f04db9b 10 DigitalOut PWMl(p21);
jaredwil 1:461a4f04db9b 11 Ticker PWMcont;
jaredwil 1:461a4f04db9b 12 //PwmOut PWMl(p21);
jaredwil 0:89cc1300ce7e 13
jaredwil 1:461a4f04db9b 14 DigitalOut row1(p26);
jaredwil 1:461a4f04db9b 15 DigitalOut row2(p23);
jaredwil 1:461a4f04db9b 16 DigitalOut row3(p24);
jaredwil 1:461a4f04db9b 17 DigitalOut row4(p25);
jaredwil 0:89cc1300ce7e 18
jaredwil 0:89cc1300ce7e 19 DigitalIn col1(p20);
jaredwil 0:89cc1300ce7e 20 DigitalIn col2(p19);
jaredwil 0:89cc1300ce7e 21 DigitalIn col3(p18);
jaredwil 0:89cc1300ce7e 22 DigitalIn col4(p17);
jaredwil 0:89cc1300ce7e 23 Timer t1;
jaredwil 0:89cc1300ce7e 24
jaredwil 0:89cc1300ce7e 25 //map
jaredwil 0:89cc1300ce7e 26 map<int, char> keypadMap;
jaredwil 0:89cc1300ce7e 27 map<int, char *> dtmfMap;
jaredwil 0:89cc1300ce7e 28
jaredwil 1:461a4f04db9b 29 //global
jaredwil 1:461a4f04db9b 30 int on = 0;
jaredwil 1:461a4f04db9b 31
jaredwil 0:89cc1300ce7e 32 //Mores Code -> Character Map
jaredwil 0:89cc1300ce7e 33 void init(){
jaredwil 0:89cc1300ce7e 34 keypadMap[0x11]='1';
jaredwil 0:89cc1300ce7e 35 keypadMap[0x12]='2';
jaredwil 0:89cc1300ce7e 36 keypadMap[0x14]='3';
jaredwil 0:89cc1300ce7e 37 keypadMap[0x18]='A';
jaredwil 0:89cc1300ce7e 38 keypadMap[0x21]='4';
jaredwil 0:89cc1300ce7e 39 keypadMap[0x22]='5';
jaredwil 0:89cc1300ce7e 40 keypadMap[0x24]='6';
jaredwil 0:89cc1300ce7e 41 keypadMap[0x28]='B';
jaredwil 0:89cc1300ce7e 42 keypadMap[0x41]='7';
jaredwil 0:89cc1300ce7e 43 keypadMap[0x42]='8';
jaredwil 0:89cc1300ce7e 44 keypadMap[0x44]='9';
jaredwil 0:89cc1300ce7e 45 keypadMap[0x48]='C';
jaredwil 0:89cc1300ce7e 46 keypadMap[0x81]='*';
jaredwil 0:89cc1300ce7e 47 keypadMap[0x82]='0';
jaredwil 0:89cc1300ce7e 48 keypadMap[0x84]='#';
jaredwil 0:89cc1300ce7e 49 keypadMap[0x88]='D';
jaredwil 0:89cc1300ce7e 50
jaredwil 0:89cc1300ce7e 51 dtmfMap[0x11]="1029,697"; //1
jaredwil 0:89cc1300ce7e 52 dtmfMap[0x12]="1336,697"; //2
jaredwil 0:89cc1300ce7e 53 dtmfMap[0x14]="1477,697"; //3
jaredwil 0:89cc1300ce7e 54 dtmfMap[0x18]="1633,697"; //A
jaredwil 0:89cc1300ce7e 55 dtmfMap[0x21]="1209,770"; //4
jaredwil 0:89cc1300ce7e 56 dtmfMap[0x22]="1336,770"; //5
jaredwil 0:89cc1300ce7e 57 dtmfMap[0x24]="1477,770"; //6
jaredwil 0:89cc1300ce7e 58 dtmfMap[0x28]="1633,770"; //B
jaredwil 0:89cc1300ce7e 59 dtmfMap[0x41]="1209,852"; //7
jaredwil 0:89cc1300ce7e 60 dtmfMap[0x42]="1336,852"; //8
jaredwil 0:89cc1300ce7e 61 dtmfMap[0x44]="1477,852"; //9
jaredwil 0:89cc1300ce7e 62 dtmfMap[0x48]="1633,852"; //C
jaredwil 0:89cc1300ce7e 63 dtmfMap[0x81]="1209,941"; //*
jaredwil 0:89cc1300ce7e 64 dtmfMap[0x82]="1336,941"; //0
jaredwil 0:89cc1300ce7e 65 dtmfMap[0x84]="1477,941"; //#
jaredwil 0:89cc1300ce7e 66 dtmfMap[0x88]="1633,941"; //D
jaredwil 0:89cc1300ce7e 67 }
jaredwil 0:89cc1300ce7e 68
jaredwil 1:461a4f04db9b 69 void flip() {
jaredwil 1:461a4f04db9b 70 if(on == 1)
jaredwil 1:461a4f04db9b 71 PWMl = !PWMl;
jaredwil 1:461a4f04db9b 72 else
jaredwil 1:461a4f04db9b 73 PWMl = 0;
jaredwil 1:461a4f04db9b 74 }
jaredwil 1:461a4f04db9b 75
jaredwil 0:89cc1300ce7e 76 int main() {
jaredwil 0:89cc1300ce7e 77 init();
jaredwil 0:89cc1300ce7e 78 //Initialize rows to 0
jaredwil 0:89cc1300ce7e 79 row1 = 0;
jaredwil 0:89cc1300ce7e 80 row2 = 0;
jaredwil 0:89cc1300ce7e 81 row3 = 0;
jaredwil 0:89cc1300ce7e 82 row4 = 0;
jaredwil 1:461a4f04db9b 83 PWMl = 0;
jaredwil 0:89cc1300ce7e 84 t1.start();
jaredwil 0:89cc1300ce7e 85 int cur_input = 0x00;
jaredwil 0:89cc1300ce7e 86 int prev_input = 0x00;
jaredwil 1:461a4f04db9b 87
jaredwil 1:461a4f04db9b 88 //main loop
jaredwil 0:89cc1300ce7e 89 while(1) {
jaredwil 1:461a4f04db9b 90
jaredwil 1:461a4f04db9b 91
jaredwil 1:461a4f04db9b 92 //If there was no previous input than switch rows
jaredwil 1:461a4f04db9b 93 if(prev_input == 0){
jaredwil 1:461a4f04db9b 94 //make all rows 0 to add stability
jaredwil 1:461a4f04db9b 95 row1 = 0;
jaredwil 1:461a4f04db9b 96 row2 = 0;
jaredwil 1:461a4f04db9b 97 row3 = 0;
jaredwil 1:461a4f04db9b 98 row4 = 0;
jaredwil 1:461a4f04db9b 99 //Keep each pin on for 4ms
jaredwil 1:461a4f04db9b 100 //"turn on" appropriat bit in map when on.
jaredwil 1:461a4f04db9b 101 switch(t1.read_ms()%4){
jaredwil 1:461a4f04db9b 102 case 0:
jaredwil 1:461a4f04db9b 103 row1 = 1;
jaredwil 1:461a4f04db9b 104 cur_input |= 0x10;
jaredwil 1:461a4f04db9b 105 break;
jaredwil 1:461a4f04db9b 106 case 1:
jaredwil 1:461a4f04db9b 107 row2 = 1;
jaredwil 1:461a4f04db9b 108 cur_input |= 0x20;
jaredwil 1:461a4f04db9b 109 break;
jaredwil 1:461a4f04db9b 110 case 2:
jaredwil 1:461a4f04db9b 111 row3 = 1;
jaredwil 1:461a4f04db9b 112 cur_input |= 0x40;
jaredwil 1:461a4f04db9b 113 break;
jaredwil 1:461a4f04db9b 114 case 3:
jaredwil 1:461a4f04db9b 115 row4 = 1;
jaredwil 1:461a4f04db9b 116 cur_input |= 0x80;
jaredwil 1:461a4f04db9b 117 break;
jaredwil 1:461a4f04db9b 118 }
jaredwil 1:461a4f04db9b 119 }
jaredwil 1:461a4f04db9b 120
jaredwil 1:461a4f04db9b 121
jaredwil 0:89cc1300ce7e 122
jaredwil 1:461a4f04db9b 123
jaredwil 1:461a4f04db9b 124 //Check each colum to see if it is high
jaredwil 1:461a4f04db9b 125 //if it is "turn on" that respective bit
jaredwil 1:461a4f04db9b 126 if(col1 == 1)
jaredwil 1:461a4f04db9b 127 cur_input |= 0x01;
jaredwil 1:461a4f04db9b 128 else if(col2 == 1)
jaredwil 1:461a4f04db9b 129 cur_input |= 0x02;
jaredwil 1:461a4f04db9b 130 else if(col3 == 1)
jaredwil 1:461a4f04db9b 131 cur_input |= 0x04;
jaredwil 1:461a4f04db9b 132 else if(col4 == 1)
jaredwil 1:461a4f04db9b 133 cur_input |= 0x08;
jaredwil 1:461a4f04db9b 134 else cur_input = 0; //Detect button release or no input set input to 0
jaredwil 1:461a4f04db9b 135
jaredwil 1:461a4f04db9b 136 //If curr input is non zero continue
jaredwil 1:461a4f04db9b 137 if(cur_input) {
jaredwil 1:461a4f04db9b 138 if(cur_input != prev_input) {
jaredwil 1:461a4f04db9b 139 char c = keypadMap[cur_input]; //assign charcter based on input
jaredwil 1:461a4f04db9b 140 if(c != 0){
jaredwil 1:461a4f04db9b 141 pc.printf("%c\r",c); //print input and char
jaredwil 1:461a4f04db9b 142 }
jaredwil 1:461a4f04db9b 143 float freqh,freql;
jaredwil 1:461a4f04db9b 144 char *freq = dtmfMap[cur_input];
jaredwil 1:461a4f04db9b 145 sscanf(freq,"%f,%f",&freqh,&freql);
jaredwil 1:461a4f04db9b 146 pc.printf("High:%f, Low:%f\r",freqh,freql);
jaredwil 1:461a4f04db9b 147
jaredwil 1:461a4f04db9b 148
jaredwil 1:461a4f04db9b 149
jaredwil 1:461a4f04db9b 150 //PWMl.period(1/freql); // set PWM period to user specified for low tone
jaredwil 1:461a4f04db9b 151 //PWMl=0.5; // set duty cycle to 50%
jaredwil 1:461a4f04db9b 152 on = 1;
jaredwil 1:461a4f04db9b 153 PWMcont.attach(&flip, (1/freql)); // the address of the function to be attached (flip) and the interval (1/freql)
jaredwil 1:461a4f04db9b 154
jaredwil 1:461a4f04db9b 155 PWMh.period(1/freqh); // set PWM period to user specified for high tone
jaredwil 1:461a4f04db9b 156 PWMh=0.5; // set duty cycle to 50%
jaredwil 1:461a4f04db9b 157
jaredwil 1:461a4f04db9b 158 }
jaredwil 1:461a4f04db9b 159
jaredwil 0:89cc1300ce7e 160 }
jaredwil 1:461a4f04db9b 161 //Turn off pulse width modulation if curr input is 0
jaredwil 1:461a4f04db9b 162 else {
jaredwil 1:461a4f04db9b 163 PWMh = 0.0;
jaredwil 1:461a4f04db9b 164 //PWMl = 0.0;
jaredwil 1:461a4f04db9b 165 on = 0;
jaredwil 1:461a4f04db9b 166 }
jaredwil 1:461a4f04db9b 167
jaredwil 1:461a4f04db9b 168
jaredwil 1:461a4f04db9b 169 //Maintain the past input
jaredwil 1:461a4f04db9b 170 prev_input = cur_input;
jaredwil 1:461a4f04db9b 171
jaredwil 1:461a4f04db9b 172
jaredwil 0:89cc1300ce7e 173 }
jaredwil 1:461a4f04db9b 174
jaredwil 0:89cc1300ce7e 175 }