Jae Kyung Han / Mbed 2 deprecated MorseCode

Generate Morse code using console text input and output to LED and speaker.

Dependencies:   4DGL-uLCD-SE PinDetect mbed

https://mbed.org/users/jkhan/notebook/morse-code/

main.cpp@0:277b4be8e03c, 2014-03-05 (annotated)

Committer:
jkhan
Date:
Wed Mar 05 18:05:59 2014 +0000
Revision:
0:277b4be8e03c
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jkhan 0:277b4be8e03c 1 /**********************
jkhan 0:277b4be8e03c 2 Jae Kyung Han
jkhan 0:277b4be8e03c 3 ECE 4180 Lab 4
jkhan 0:277b4be8e03c 4 Morse Code Generator
jkhan 0:277b4be8e03c 5 **********************/
jkhan 0:277b4be8e03c 6
jkhan 0:277b4be8e03c 7 #include "mbed.h"
jkhan 0:277b4be8e03c 8 #include "uLCD_4DGL.h"
jkhan 0:277b4be8e03c 9 #include "Speaker.h"
jkhan 0:277b4be8e03c 10 #include "PinDetect.h"
jkhan 0:277b4be8e03c 11 #include "EncodeMorse.cpp"
jkhan 0:277b4be8e03c 12 #include <string>
jkhan 0:277b4be8e03c 13
jkhan 0:277b4be8e03c 14 // USB Serial
jkhan 0:277b4be8e03c 15 Serial pc(USBTX, USBRX);
jkhan 0:277b4be8e03c 16
jkhan 0:277b4be8e03c 17 // uLCD
jkhan 0:277b4be8e03c 18 uLCD_4DGL uLCD(p28,p27,p29); // serial tx, serial rx, reset pin.
jkhan 0:277b4be8e03c 19
jkhan 0:277b4be8e03c 20 // Speaker PWM
jkhan 0:277b4be8e03c 21 Speaker mySpeaker(p26); // Parameter must be a PwmOut pin.
jkhan 0:277b4be8e03c 22
jkhan 0:277b4be8e03c 23 // Pushbuttons
jkhan 0:277b4be8e03c 24 PinDetect pb1(p19);
jkhan 0:277b4be8e03c 25 PinDetect pb2(p20);
jkhan 0:277b4be8e03c 26 PinDetect pb3(p21);
jkhan 0:277b4be8e03c 27 PinDetect pb4(p22);
jkhan 0:277b4be8e03c 28 PinDetect pb5(p23);
jkhan 0:277b4be8e03c 29 PinDetect pb6(p24);
jkhan 0:277b4be8e03c 30
jkhan 0:277b4be8e03c 31 // mbed LEDs
jkhan 0:277b4be8e03c 32 DigitalOut led1(LED1);
jkhan 0:277b4be8e03c 33 DigitalOut led2(LED2);
jkhan 0:277b4be8e03c 34 DigitalOut led3(LED3);
jkhan 0:277b4be8e03c 35 DigitalOut led4(LED4);
jkhan 0:277b4be8e03c 36
jkhan 0:277b4be8e03c 37 // Global Variables
jkhan 0:277b4be8e03c 38 static const char space[] = "000"; // Internationally defined spacing length between Morse code letters is 3. Do not change.
jkhan 0:277b4be8e03c 39 float SpeakerFreq = 1000;
jkhan 0:277b4be8e03c 40 float SpeakerVol = 0.01;
jkhan 0:277b4be8e03c 41 float DotLength = 0.1; // Duration of a dot.
jkhan 0:277b4be8e03c 42 float Speed = 1.2/DotLength; // Words per minute (1 word = 50 dots).
jkhan 0:277b4be8e03c 43
jkhan 0:277b4be8e03c 44 void pb1_hit_callback(void)
jkhan 0:277b4be8e03c 45 {
jkhan 0:277b4be8e03c 46 if(SpeakerFreq < 1960)
jkhan 0:277b4be8e03c 47 SpeakerFreq = SpeakerFreq + 50;
jkhan 0:277b4be8e03c 48
jkhan 0:277b4be8e03c 49 uLCD.color(DGREY);
jkhan 0:277b4be8e03c 50 uLCD.locate(0,2); uLCD.printf("Pitch: ");
jkhan 0:277b4be8e03c 51 uLCD.color(WHITE);
jkhan 0:277b4be8e03c 52 uLCD.locate(8,2); uLCD.printf("%4.0f Hz",SpeakerFreq);
jkhan 0:277b4be8e03c 53 }
jkhan 0:277b4be8e03c 54 void pb2_hit_callback(void)
jkhan 0:277b4be8e03c 55 {
jkhan 0:277b4be8e03c 56 if(SpeakerFreq > 100)
jkhan 0:277b4be8e03c 57 SpeakerFreq = SpeakerFreq - 50;
jkhan 0:277b4be8e03c 58 else
jkhan 0:277b4be8e03c 59 SpeakerFreq = 100;
jkhan 0:277b4be8e03c 60
jkhan 0:277b4be8e03c 61 uLCD.color(DGREY);
jkhan 0:277b4be8e03c 62 uLCD.locate(0,2); uLCD.printf("Pitch: ");
jkhan 0:277b4be8e03c 63 uLCD.color(WHITE);
jkhan 0:277b4be8e03c 64 uLCD.locate(8,2); uLCD.printf("%4.0f Hz",SpeakerFreq);
jkhan 0:277b4be8e03c 65 }
jkhan 0:277b4be8e03c 66 void pb3_hit_callback(void)
jkhan 0:277b4be8e03c 67 {
jkhan 0:277b4be8e03c 68 if(Speed < 100)
jkhan 0:277b4be8e03c 69 Speed = Speed + 1;
jkhan 0:277b4be8e03c 70
jkhan 0:277b4be8e03c 71 uLCD.color(DGREY);
jkhan 0:277b4be8e03c 72 uLCD.locate(0,4); uLCD.printf("Speed: ");
jkhan 0:277b4be8e03c 73 uLCD.color(WHITE);
jkhan 0:277b4be8e03c 74 uLCD.locate(10,4); uLCD.printf("%2.0f wpm",Speed);
jkhan 0:277b4be8e03c 75 }
jkhan 0:277b4be8e03c 76 void pb4_hit_callback(void)
jkhan 0:277b4be8e03c 77 {
jkhan 0:277b4be8e03c 78 if(Speed > 1)
jkhan 0:277b4be8e03c 79 Speed = Speed - 1;
jkhan 0:277b4be8e03c 80 else
jkhan 0:277b4be8e03c 81 Speed = 1;
jkhan 0:277b4be8e03c 82
jkhan 0:277b4be8e03c 83 uLCD.color(DGREY);
jkhan 0:277b4be8e03c 84 uLCD.locate(0,4); uLCD.printf("Speed: ");
jkhan 0:277b4be8e03c 85 uLCD.color(WHITE);
jkhan 0:277b4be8e03c 86 uLCD.locate(10,4); uLCD.printf("%2.0f wpm",Speed);
jkhan 0:277b4be8e03c 87 }
jkhan 0:277b4be8e03c 88 void pb5_hit_callback(void)
jkhan 0:277b4be8e03c 89 {
jkhan 0:277b4be8e03c 90 if(SpeakerVol < 0.045)
jkhan 0:277b4be8e03c 91 SpeakerVol = SpeakerVol + 0.005;
jkhan 0:277b4be8e03c 92
jkhan 0:277b4be8e03c 93 uLCD.color(DGREY);
jkhan 0:277b4be8e03c 94 uLCD.locate(0,6); uLCD.printf("Volume: ");
jkhan 0:277b4be8e03c 95 uLCD.color(WHITE);
jkhan 0:277b4be8e03c 96 uLCD.locate(10,6); uLCD.printf("%2.0f",SpeakerVol*1000);
jkhan 0:277b4be8e03c 97 }
jkhan 0:277b4be8e03c 98 void pb6_hit_callback(void)
jkhan 0:277b4be8e03c 99 {
jkhan 0:277b4be8e03c 100 if(SpeakerVol > 0.005)
jkhan 0:277b4be8e03c 101 SpeakerVol = SpeakerVol - 0.005;
jkhan 0:277b4be8e03c 102 else
jkhan 0:277b4be8e03c 103 SpeakerVol = 0;
jkhan 0:277b4be8e03c 104
jkhan 0:277b4be8e03c 105 uLCD.color(DGREY);
jkhan 0:277b4be8e03c 106 uLCD.locate(0,6); uLCD.printf("Volume: ");
jkhan 0:277b4be8e03c 107 uLCD.color(WHITE);
jkhan 0:277b4be8e03c 108 uLCD.locate(10,6); uLCD.printf("%2.0f",SpeakerVol*1000);
jkhan 0:277b4be8e03c 109 }
jkhan 0:277b4be8e03c 110
jkhan 0:277b4be8e03c 111 void UpdateLCD()
jkhan 0:277b4be8e03c 112 {
jkhan 0:277b4be8e03c 113 uLCD.cls();
jkhan 0:277b4be8e03c 114 uLCD.color(DGREY);
jkhan 0:277b4be8e03c 115 uLCD.locate(4,0); uLCD.printf("Morse Code");
jkhan 0:277b4be8e03c 116 uLCD.locate(0,2); uLCD.printf("Pitch: ");
jkhan 0:277b4be8e03c 117 uLCD.locate(0,4); uLCD.printf("Speed: ");
jkhan 0:277b4be8e03c 118 uLCD.locate(0,6); uLCD.printf("Volume: ");
jkhan 0:277b4be8e03c 119 uLCD.locate(0,8); uLCD.printf("Input: ");
jkhan 0:277b4be8e03c 120 uLCD.color(WHITE);
jkhan 0:277b4be8e03c 121 uLCD.locate(8,2); uLCD.printf("%4.0f Hz",SpeakerFreq);
jkhan 0:277b4be8e03c 122 uLCD.locate(10,4); uLCD.printf("%2.0f wpm",Speed);
jkhan 0:277b4be8e03c 123 uLCD.locate(10,6); uLCD.printf("%2.0f",SpeakerVol*1000);
jkhan 0:277b4be8e03c 124 }
jkhan 0:277b4be8e03c 125
jkhan 0:277b4be8e03c 126 int main() {
jkhan 0:277b4be8e03c 127 // INITIAL SETTINGS AND DISPLAY
jkhan 0:277b4be8e03c 128 // Set mode so that no external PullUp resistor is needed:
jkhan 0:277b4be8e03c 129 pb1.mode(PullUp);
jkhan 0:277b4be8e03c 130 pb2.mode(PullUp);
jkhan 0:277b4be8e03c 131 pb3.mode(PullUp);
jkhan 0:277b4be8e03c 132 pb4.mode(PullUp);
jkhan 0:277b4be8e03c 133 pb5.mode(PullUp);
jkhan 0:277b4be8e03c 134 pb6.mode(PullUp);
jkhan 0:277b4be8e03c 135 wait(0.01); // Wait for mode to take effect.
jkhan 0:277b4be8e03c 136
jkhan 0:277b4be8e03c 137 // Set up interrupt callback functions for a pb hit:
jkhan 0:277b4be8e03c 138 pb1.attach_deasserted(&pb1_hit_callback);
jkhan 0:277b4be8e03c 139 pb2.attach_deasserted(&pb2_hit_callback);
jkhan 0:277b4be8e03c 140 pb3.attach_deasserted(&pb3_hit_callback);
jkhan 0:277b4be8e03c 141 pb4.attach_deasserted(&pb4_hit_callback);
jkhan 0:277b4be8e03c 142 pb5.attach_deasserted(&pb5_hit_callback);
jkhan 0:277b4be8e03c 143 pb6.attach_deasserted(&pb6_hit_callback);
jkhan 0:277b4be8e03c 144
jkhan 0:277b4be8e03c 145 // Sample pushbutton inputs using interrupts:
jkhan 0:277b4be8e03c 146 pb1.setSampleFrequency();
jkhan 0:277b4be8e03c 147 pb2.setSampleFrequency();
jkhan 0:277b4be8e03c 148 pb3.setSampleFrequency();
jkhan 0:277b4be8e03c 149 pb4.setSampleFrequency();
jkhan 0:277b4be8e03c 150 pb5.setSampleFrequency();
jkhan 0:277b4be8e03c 151 pb6.setSampleFrequency();
jkhan 0:277b4be8e03c 152
jkhan 0:277b4be8e03c 153 // Set up LCD:
jkhan 0:277b4be8e03c 154 uLCD.baudrate(3000000); // Set LCD to max baudrate.
jkhan 0:277b4be8e03c 155 UpdateLCD();
jkhan 0:277b4be8e03c 156
jkhan 0:277b4be8e03c 157 while(1) {
jkhan 0:277b4be8e03c 158 // INPUT TEXT USING SERIAL USB PORT
jkhan 0:277b4be8e03c 159 pc.printf("\n========== MORSE CODE GENERATOR ==========\n");
jkhan 0:277b4be8e03c 160 pc.printf("Type a sentence below (end with [.] or [?]):\n");
jkhan 0:277b4be8e03c 161
jkhan 0:277b4be8e03c 162 char myChar = NULL; // Initialize to save each character from port.
jkhan 0:277b4be8e03c 163 char myString[100] = {NULL}; // Initialize to store concatenated characters. Set to 100 character limit for a sentence.
jkhan 0:277b4be8e03c 164
jkhan 0:277b4be8e03c 165 while( !(myChar=='.' || myChar=='?') )
jkhan 0:277b4be8e03c 166 {
jkhan 0:277b4be8e03c 167 myChar = pc.getc(); // Read character from port.
jkhan 0:277b4be8e03c 168 pc.putc( myChar ); // Echo character to port.
jkhan 0:277b4be8e03c 169 sprintf(myString,"%s%c",myString,myChar); // Concatenate myString and myChar into myString.
jkhan 0:277b4be8e03c 170 }
jkhan 0:277b4be8e03c 171
jkhan 0:277b4be8e03c 172 // DISPLAY TO LCD
jkhan 0:277b4be8e03c 173 UpdateLCD();
jkhan 0:277b4be8e03c 174 uLCD.color(GREEN);
jkhan 0:277b4be8e03c 175 uLCD.locate(8,8); uLCD.printf("%s",myString); // Display final input.
jkhan 0:277b4be8e03c 176
jkhan 0:277b4be8e03c 177 // TRANSLATE TEXT TO MORSE CODE
jkhan 0:277b4be8e03c 178 pc.printf("\n\nTranslation:\n");
jkhan 0:277b4be8e03c 179 int i = 0; // Initialize iterator.
jkhan 0:277b4be8e03c 180 static char* X; // Initialize output variable for Morse function.
jkhan 0:277b4be8e03c 181 char myCode[1000] = {NULL}; // Initialize to store Morse code. This can get pretty big - set around 10 times the string length (Optimize this).
jkhan 0:277b4be8e03c 182 char X2[50] = {NULL}; // Initialize to save X with or without spacing (leaving as X causes type-casting conflict).
jkhan 0:277b4be8e03c 183 int SpaceDetect = 0; // True if character is a space.
jkhan 0:277b4be8e03c 184
jkhan 0:277b4be8e03c 185 while(myString[i] != '\0')
jkhan 0:277b4be8e03c 186 {
jkhan 0:277b4be8e03c 187 myChar = myString[i]; // Get each character.
jkhan 0:277b4be8e03c 188 X = EncodeMorse(myChar); // Translate it into Morse code.
jkhan 0:277b4be8e03c 189
jkhan 0:277b4be8e03c 190 // Account for the spacing between letters in Morse code.
jkhan 0:277b4be8e03c 191 if(i > 0) // Is not the first letter in the code...
jkhan 0:277b4be8e03c 192 {
jkhan 0:277b4be8e03c 193 if(myChar != 32) // Is not [Space]...
jkhan 0:277b4be8e03c 194 {
jkhan 0:277b4be8e03c 195 if(SpaceDetect == 0) // Is not a letter after [Space].
jkhan 0:277b4be8e03c 196 {
jkhan 0:277b4be8e03c 197 sprintf(X2,"%s%s",space,X); // Add spacing before letter.
jkhan 0:277b4be8e03c 198 }
jkhan 0:277b4be8e03c 199 else // Is a letter after [Space].
jkhan 0:277b4be8e03c 200 {
jkhan 0:277b4be8e03c 201 sprintf(X2,"%s%s","",X); // Don't add spacing before letter.
jkhan 0:277b4be8e03c 202 SpaceDetect = 0; // Reset "space detected" flag
jkhan 0:277b4be8e03c 203 }
jkhan 0:277b4be8e03c 204 }
jkhan 0:277b4be8e03c 205 else // Is [Space].
jkhan 0:277b4be8e03c 206 {
jkhan 0:277b4be8e03c 207 sprintf(X2,"%s%s","",X); // Don't add spacing.
jkhan 0:277b4be8e03c 208 SpaceDetect = 1; // Enable to avoid adding spacing to the following letter.
jkhan 0:277b4be8e03c 209 }
jkhan 0:277b4be8e03c 210 }
jkhan 0:277b4be8e03c 211 else // Is the first letter in the code.
jkhan 0:277b4be8e03c 212 {
jkhan 0:277b4be8e03c 213 sprintf(X2,"%s%s","",X); // Don't add spacing before the very first letter.
jkhan 0:277b4be8e03c 214 }
jkhan 0:277b4be8e03c 215 sprintf(myCode,"%s%s",myCode,X2); // Concatenate into complete code.
jkhan 0:277b4be8e03c 216 i++; // Get next character index.
jkhan 0:277b4be8e03c 217 // DEBUGGING
jkhan 0:277b4be8e03c 218 pc.printf("%c: %s -> %s\n",myChar,X,X2);
jkhan 0:277b4be8e03c 219 }
jkhan 0:277b4be8e03c 220 pc.printf("myCode = %s\n",myCode); // Display code on PC.
jkhan 0:277b4be8e03c 221
jkhan 0:277b4be8e03c 222 // PLAY MORSE CODE TO SPEAKER AND LED
jkhan 0:277b4be8e03c 223 pc.printf("\nMorse code playback:\n");
jkhan 0:277b4be8e03c 224 int j = 0; // Initialize iterator.
jkhan 0:277b4be8e03c 225 int myInt; // Initialize for character to integer conversion.
jkhan 0:277b4be8e03c 226 myChar = myCode[j]; // Initialize first character.
jkhan 0:277b4be8e03c 227 while( myChar != NULL)
jkhan 0:277b4be8e03c 228 {
jkhan 0:277b4be8e03c 229 myInt = myChar - '0'; // Character to integer for numericals.
jkhan 0:277b4be8e03c 230 if( myInt )
jkhan 0:277b4be8e03c 231 {
jkhan 0:277b4be8e03c 232 if(myInt==1) pc.printf("."); // Display 1s as dots.
jkhan 0:277b4be8e03c 233 if(myInt==3) pc.printf("-"); // Display 3s as dashes.
jkhan 0:277b4be8e03c 234 led1 = 1;
jkhan 0:277b4be8e03c 235 mySpeaker.PlayNote(SpeakerFreq,(myInt/Speed),SpeakerVol);
jkhan 0:277b4be8e03c 236 }
jkhan 0:277b4be8e03c 237 else
jkhan 0:277b4be8e03c 238 {
jkhan 0:277b4be8e03c 239 pc.printf(" "); // Display 0s as spaces.
jkhan 0:277b4be8e03c 240 led1 = 0;
jkhan 0:277b4be8e03c 241 wait(1/Speed);
jkhan 0:277b4be8e03c 242 }
jkhan 0:277b4be8e03c 243 myChar = myCode[++j]; // Increment to next character.
jkhan 0:277b4be8e03c 244 }
jkhan 0:277b4be8e03c 245 // DEBUGGING
jkhan 0:277b4be8e03c 246 pc.printf("\nmyString character length: %d\n",i);
jkhan 0:277b4be8e03c 247 pc.printf("myCode character length: %d\n",j);
jkhan 0:277b4be8e03c 248 led1 = 0; // Turn LED off at the end because otherwise it stays on.
jkhan 0:277b4be8e03c 249 pc.printf("[END]\n");
jkhan 0:277b4be8e03c 250 } //infinite while loop
jkhan 0:277b4be8e03c 251 }//main