Terry Richards / Mbed 2 deprecated HW5-functionGenerator

Function Generator and Oscilloscope

Dependencies:   C12832_lcd DebounceIn mbed

main.cpp@0:dfc39b05ea05, 2014-05-22 (annotated)

Committer:
trichards1138
Date:
Thu May 22 18:43:41 2014 +0000
Revision:
0:dfc39b05ea05
Child:
1:e31325194990
First commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
trichards1138 0:dfc39b05ea05 1 #include "mbed.h"
trichards1138 0:dfc39b05ea05 2 #include "C12832_lcd.h"
trichards1138 0:dfc39b05ea05 3 #include "DebounceIn.h"
trichards1138 0:dfc39b05ea05 4 #include "rtos.h"
trichards1138 0:dfc39b05ea05 5
trichards1138 0:dfc39b05ea05 6 Serial pc(USBTX, USBRX);
trichards1138 0:dfc39b05ea05 7 C12832_LCD LCD;
trichards1138 0:dfc39b05ea05 8 AnalogIn Ain(p17);
trichards1138 0:dfc39b05ea05 9 AnalogOut Aout(p18);
trichards1138 0:dfc39b05ea05 10 AnalogIn pot1(p19);
trichards1138 0:dfc39b05ea05 11 AnalogIn pot2(p20);
trichards1138 0:dfc39b05ea05 12 DigitalIn up(p15);
trichards1138 0:dfc39b05ea05 13 DigitalIn down(p12);
trichards1138 0:dfc39b05ea05 14 DigitalIn left(p13);
trichards1138 0:dfc39b05ea05 15 DigitalIn right(p16);
trichards1138 0:dfc39b05ea05 16 BusIn joy(p15,p12,p13,p16);
trichards1138 0:dfc39b05ea05 17 DigitalIn OnOff(p14);
trichards1138 0:dfc39b05ea05 18 PwmOut testout(p21);
trichards1138 0:dfc39b05ea05 19 PwmOut tled(LED1);
trichards1138 0:dfc39b05ea05 20 /*
trichards1138 0:dfc39b05ea05 21 DebounceIn OnOff(p14);
trichards1138 0:dfc39b05ea05 22 DebounceIn up(p15);
trichards1138 0:dfc39b05ea05 23 DebounceIn down(p12);
trichards1138 0:dfc39b05ea05 24 DebounceIn left(p13);
trichards1138 0:dfc39b05ea05 25 DebounceIn right(p16);
trichards1138 0:dfc39b05ea05 26 */
trichards1138 0:dfc39b05ea05 27
trichards1138 0:dfc39b05ea05 28 bool en_saw=false, en_dc=false, en_square=false, en_sine=false, en_display=false;
trichards1138 0:dfc39b05ea05 29
trichards1138 0:dfc39b05ea05 30 // SineWave thread - is initiated when the user selects sinewave output
trichards1138 0:dfc39b05ea05 31 // print a sin function in a small window
trichards1138 0:dfc39b05ea05 32 // the value of pot 1 changes the period of the sine wave
trichards1138 0:dfc39b05ea05 33 // The value of pot 2 changes the height of the sine wave
trichards1138 0:dfc39b05ea05 34 void sineWave(const void *arg)
trichards1138 0:dfc39b05ea05 35 {
trichards1138 0:dfc39b05ea05 36 double i, vert, horiz, outval;
trichards1138 0:dfc39b05ea05 37 while(true) { // thread loop
trichards1138 0:dfc39b05ea05 38 while( en_sine ) {
trichards1138 0:dfc39b05ea05 39 horiz = pot1.read(); // get value of pot 1
trichards1138 0:dfc39b05ea05 40 vert = pot2.read(); // scale the height of wave
trichards1138 0:dfc39b05ea05 41 // pc.printf("horiz=%f, vert=%f\r\n", horiz, vert);
trichards1138 0:dfc39b05ea05 42 for (i=0; i<2; i=i+0.05) {
trichards1138 0:dfc39b05ea05 43 outval = 0.5 + 0.5*vert*sin(i*3.14159);
trichards1138 0:dfc39b05ea05 44 Aout.write(outval); // Compute the sine value, + half the range
trichards1138 0:dfc39b05ea05 45 //pc.printf("Output is: %f\r\n", outval);
trichards1138 0:dfc39b05ea05 46 Thread::wait(0.00005); // Controls the sine wave period
trichards1138 0:dfc39b05ea05 47 }
trichards1138 0:dfc39b05ea05 48 }
trichards1138 0:dfc39b05ea05 49 Thread::wait(200);
trichards1138 0:dfc39b05ea05 50 }
trichards1138 0:dfc39b05ea05 51 }
trichards1138 0:dfc39b05ea05 52
trichards1138 0:dfc39b05ea05 53 // Thread squareWave - called if user selects squarewave
trichards1138 0:dfc39b05ea05 54 // pot1 controls the width of pulse
trichards1138 0:dfc39b05ea05 55 // pot2 controls the height of pulse
trichards1138 0:dfc39b05ea05 56 void squareWave(const void *arg)
trichards1138 0:dfc39b05ea05 57 {
trichards1138 0:dfc39b05ea05 58 unsigned int i;
trichards1138 0:dfc39b05ea05 59 float width, height, w;
trichards1138 0:dfc39b05ea05 60 while(true) { // thread loop
trichards1138 0:dfc39b05ea05 61 while( en_square ) {
trichards1138 0:dfc39b05ea05 62 width = pot1.read_u16(); // get value of
trichards1138 0:dfc39b05ea05 63 w = width*2;
trichards1138 0:dfc39b05ea05 64 height = pot2.read(); // scale the height of wave
trichards1138 0:dfc39b05ea05 65 for (i=0; i<w; i++) {
trichards1138 0:dfc39b05ea05 66 if( i >= width )
trichards1138 0:dfc39b05ea05 67 Aout.write(0);
trichards1138 0:dfc39b05ea05 68 else
trichards1138 0:dfc39b05ea05 69 Aout.write(height);
trichards1138 0:dfc39b05ea05 70 }
trichards1138 0:dfc39b05ea05 71 Thread::wait(5);
trichards1138 0:dfc39b05ea05 72 }
trichards1138 0:dfc39b05ea05 73 Thread::wait(200);
trichards1138 0:dfc39b05ea05 74 }
trichards1138 0:dfc39b05ea05 75 }
trichards1138 0:dfc39b05ea05 76
trichards1138 0:dfc39b05ea05 77 // Thread flatdc - called if user selects dc sig
trichards1138 0:dfc39b05ea05 78 // pot2 controls the height of dc signal
trichards1138 0:dfc39b05ea05 79 void flatdc(const void *arg)
trichards1138 0:dfc39b05ea05 80 {
trichards1138 0:dfc39b05ea05 81 while(true) { // thread loop
trichards1138 0:dfc39b05ea05 82 while( en_dc ) {
trichards1138 0:dfc39b05ea05 83 Aout.write(pot2.read()); // scale the height of wave
trichards1138 0:dfc39b05ea05 84 Thread::wait(10);
trichards1138 0:dfc39b05ea05 85 }
trichards1138 0:dfc39b05ea05 86 Thread::wait(200);
trichards1138 0:dfc39b05ea05 87 }
trichards1138 0:dfc39b05ea05 88 }
trichards1138 0:dfc39b05ea05 89
trichards1138 0:dfc39b05ea05 90 void displayWave(const void *arg)
trichards1138 0:dfc39b05ea05 91 {
trichards1138 0:dfc39b05ea05 92 unsigned int i;
trichards1138 0:dfc39b05ea05 93 unsigned int h = LCD.height(), w = LCD.width(), hhh;
trichards1138 0:dfc39b05ea05 94 unsigned int time_base = 0.5;
trichards1138 0:dfc39b05ea05 95 float trigger, curstate;
trichards1138 0:dfc39b05ea05 96 while(true) { // thread loop
trichards1138 0:dfc39b05ea05 97 while( en_display ) {
trichards1138 0:dfc39b05ea05 98 for (i=0; i<w; i++) {
trichards1138 0:dfc39b05ea05 99 hhh = (int)((h-(h*Ain.read()))+4);
trichards1138 0:dfc39b05ea05 100 LCD.pixel(i, hhh ,1); // print pixel
trichards1138 0:dfc39b05ea05 101 Thread::wait(time_base);
trichards1138 0:dfc39b05ea05 102 }
trichards1138 0:dfc39b05ea05 103 LCD.copy_to_lcd(); // LCD.pixel does not update the lcd
trichards1138 0:dfc39b05ea05 104 Thread::wait(20);
trichards1138 0:dfc39b05ea05 105 LCD.cls();
trichards1138 0:dfc39b05ea05 106 LCD.rect(0,0,w,h,1);
trichards1138 0:dfc39b05ea05 107 trigger = pot1.read();
trichards1138 0:dfc39b05ea05 108 while( Ain.read() < trigger ) Thread::wait(0.5);
trichards1138 0:dfc39b05ea05 109 if( false ) { //en_square ) {
trichards1138 0:dfc39b05ea05 110 while( Ain.read() > 0.2 ) Thread::wait(0.5);
trichards1138 0:dfc39b05ea05 111 while( Ain.read() < trigger ) Thread::wait(0.5);
trichards1138 0:dfc39b05ea05 112 }
trichards1138 0:dfc39b05ea05 113 }
trichards1138 0:dfc39b05ea05 114 LCD.cls();
trichards1138 0:dfc39b05ea05 115 }
trichards1138 0:dfc39b05ea05 116 }
trichards1138 0:dfc39b05ea05 117
trichards1138 0:dfc39b05ea05 118
trichards1138 0:dfc39b05ea05 119 int main()
trichards1138 0:dfc39b05ea05 120 {
trichards1138 0:dfc39b05ea05 121 bool do_sinewave, do_squarewave, do_sawtooth, do_dc;
trichards1138 0:dfc39b05ea05 122 pc.baud(19200);
trichards1138 0:dfc39b05ea05 123 //testout.period_ms(6);
trichards1138 0:dfc39b05ea05 124 //testout.write(0.5);
trichards1138 0:dfc39b05ea05 125 testout.period_ms(127);
trichards1138 0:dfc39b05ea05 126 testout.pulsewidth_ms(127*pot2.read());
trichards1138 0:dfc39b05ea05 127 en_display = true;
trichards1138 0:dfc39b05ea05 128 Thread display(displayWave);
trichards1138 0:dfc39b05ea05 129 // Thread square(squareWave);
trichards1138 0:dfc39b05ea05 130 //Thread saw(sawtooth);
trichards1138 0:dfc39b05ea05 131 // Thread dc(flatdc);
trichards1138 0:dfc39b05ea05 132 // Thread sine(sineWave);
trichards1138 0:dfc39b05ea05 133 while(1) {
trichards1138 0:dfc39b05ea05 134 //tled = testout;
trichards1138 0:dfc39b05ea05 135 testout.pulsewidth_ms(127*pot2.read());
trichards1138 0:dfc39b05ea05 136 Thread::wait(500);
trichards1138 0:dfc39b05ea05 137 }
trichards1138 0:dfc39b05ea05 138 while(1) {
trichards1138 0:dfc39b05ea05 139 while( !OnOff ) {
trichards1138 0:dfc39b05ea05 140 //pc.printf("havent selected yet\r\n");
trichards1138 0:dfc39b05ea05 141 if( up ) {
trichards1138 0:dfc39b05ea05 142 do_sinewave = false;
trichards1138 0:dfc39b05ea05 143 do_squarewave = false;
trichards1138 0:dfc39b05ea05 144 do_sawtooth = true;
trichards1138 0:dfc39b05ea05 145 do_dc = false;
trichards1138 0:dfc39b05ea05 146 }
trichards1138 0:dfc39b05ea05 147 if( down ) {
trichards1138 0:dfc39b05ea05 148 do_sinewave = false;
trichards1138 0:dfc39b05ea05 149 do_squarewave = false;
trichards1138 0:dfc39b05ea05 150 do_sawtooth = false;
trichards1138 0:dfc39b05ea05 151 do_dc = true;
trichards1138 0:dfc39b05ea05 152 }
trichards1138 0:dfc39b05ea05 153 if( left ) {
trichards1138 0:dfc39b05ea05 154 do_sinewave = true;
trichards1138 0:dfc39b05ea05 155 do_squarewave = false;
trichards1138 0:dfc39b05ea05 156 do_sawtooth = false;
trichards1138 0:dfc39b05ea05 157 do_dc = false;
trichards1138 0:dfc39b05ea05 158 }
trichards1138 0:dfc39b05ea05 159 if( right ) {
trichards1138 0:dfc39b05ea05 160 do_sinewave = false;
trichards1138 0:dfc39b05ea05 161 do_squarewave = true;
trichards1138 0:dfc39b05ea05 162 do_sawtooth = false;
trichards1138 0:dfc39b05ea05 163 do_dc = false;
trichards1138 0:dfc39b05ea05 164 }
trichards1138 0:dfc39b05ea05 165 Thread::wait(20);
trichards1138 0:dfc39b05ea05 166 }
trichards1138 0:dfc39b05ea05 167 if( do_squarewave ) {
trichards1138 0:dfc39b05ea05 168 pc.printf("I selected square\r\n");
trichards1138 0:dfc39b05ea05 169 en_square = true;
trichards1138 0:dfc39b05ea05 170 }
trichards1138 0:dfc39b05ea05 171 else if( do_sawtooth ) {
trichards1138 0:dfc39b05ea05 172 pc.printf("I selected saw\r\n");
trichards1138 0:dfc39b05ea05 173 en_saw = true;
trichards1138 0:dfc39b05ea05 174 }
trichards1138 0:dfc39b05ea05 175 else if( do_dc ) {
trichards1138 0:dfc39b05ea05 176 pc.printf("I selected DC\r\n");
trichards1138 0:dfc39b05ea05 177 en_dc = true;
trichards1138 0:dfc39b05ea05 178 }
trichards1138 0:dfc39b05ea05 179 else {
trichards1138 0:dfc39b05ea05 180 pc.printf("I selected sine\r\n");
trichards1138 0:dfc39b05ea05 181 en_sine = true;
trichards1138 0:dfc39b05ea05 182 }
trichards1138 0:dfc39b05ea05 183 en_display = true;
trichards1138 0:dfc39b05ea05 184 while( OnOff ) {
trichards1138 0:dfc39b05ea05 185 // pc.printf("In first\r\n");
trichards1138 0:dfc39b05ea05 186 Thread::wait(200);
trichards1138 0:dfc39b05ea05 187 }
trichards1138 0:dfc39b05ea05 188 while( !OnOff ) {
trichards1138 0:dfc39b05ea05 189 // pc.printf("In Second\r\n");
trichards1138 0:dfc39b05ea05 190 Thread::wait(200);
trichards1138 0:dfc39b05ea05 191 }
trichards1138 0:dfc39b05ea05 192 while( OnOff ) {
trichards1138 0:dfc39b05ea05 193 // pc.printf("In Third\r\n");
trichards1138 0:dfc39b05ea05 194 Thread::wait(100);
trichards1138 0:dfc39b05ea05 195 }
trichards1138 0:dfc39b05ea05 196 if( do_squarewave ) {
trichards1138 0:dfc39b05ea05 197 pc.printf("I terminated square\r\n");
trichards1138 0:dfc39b05ea05 198 en_square = false;
trichards1138 0:dfc39b05ea05 199 }
trichards1138 0:dfc39b05ea05 200 else if( do_sawtooth ) {
trichards1138 0:dfc39b05ea05 201 pc.printf("I terminated saw\r\n");
trichards1138 0:dfc39b05ea05 202 en_saw = false;
trichards1138 0:dfc39b05ea05 203 }
trichards1138 0:dfc39b05ea05 204 else if( do_dc ) {
trichards1138 0:dfc39b05ea05 205 pc.printf("I terminated DC\r\n");
trichards1138 0:dfc39b05ea05 206 en_dc = false;
trichards1138 0:dfc39b05ea05 207 }
trichards1138 0:dfc39b05ea05 208 else {
trichards1138 0:dfc39b05ea05 209 pc.printf("I terminated sine\r\n");
trichards1138 0:dfc39b05ea05 210 en_sine = false;
trichards1138 0:dfc39b05ea05 211 }
trichards1138 0:dfc39b05ea05 212 en_display=false;
trichards1138 0:dfc39b05ea05 213 LCD.cls();
trichards1138 0:dfc39b05ea05 214 }
trichards1138 0:dfc39b05ea05 215 }
trichards1138 0:dfc39b05ea05 216