NITH ece / Mbed 2 deprecated Digital_Lock_with_audio

A simple digital lock with attempted audio guidance

Dependencies:   FATFileSystem TextLCD mbed

Fork of Digital_Lock_with_audio by NITH ece

main.cpp@1:85eb1c94154a, 2013-04-23 (annotated)

Committer:
kit2
Date:
Tue Apr 23 12:49:09 2013 +0000
Revision:
1:85eb1c94154a
Parent:
0:e09703934ff4
Child:
2:9bdba6204bb4
digital lock system

Who changed what in which revision?

UserRevisionLine numberNew contents of line
4180_1 0:e09703934ff4 1
kit2 1:85eb1c94154a 2
4180_1 0:e09703934ff4 3
4180_1 0:e09703934ff4 4
kit2 1:85eb1c94154a 5 #include "mbed.h"
kit2 1:85eb1c94154a 6 #include "SDFileSystem.h"
4180_1 0:e09703934ff4 7 #include <string>
4180_1 0:e09703934ff4 8 #include <list>
kit2 1:85eb1c94154a 9 #include <mpr121.h>
kit2 1:85eb1c94154a 10 #include "TextLCD.h"
kit2 1:85eb1c94154a 11 #include <stdio.h>
kit2 1:85eb1c94154a 12 #include <stdlib.h>
kit2 1:85eb1c94154a 13 #include <sstream>
kit2 1:85eb1c94154a 14 #include <iostream>
4180_1 0:e09703934ff4 15
kit2 1:85eb1c94154a 16
kit2 1:85eb1c94154a 17 //------------------------------------------------------------------initialize lcd
4180_1 0:e09703934ff4 18
kit2 1:85eb1c94154a 19 TextLCD lcd(p24, p25, p27, p28, p29, p30); // rs, e, d4-d7
kit2 1:85eb1c94154a 20 //--------------------------------------------------------------------
kit2 1:85eb1c94154a 21
kit2 1:85eb1c94154a 22 //------------------------------------------------------------------initial touch pannel
4180_1 0:e09703934ff4 23 DigitalOut led1(LED1);
4180_1 0:e09703934ff4 24 DigitalOut led2(LED2);
4180_1 0:e09703934ff4 25 DigitalOut led3(LED3);
4180_1 0:e09703934ff4 26 DigitalOut led4(LED4);
kit2 1:85eb1c94154a 27 DigitalOut servo(p12);
kit2 1:85eb1c94154a 28 int org[7] = {0,0,0,0,0,0,0};
kit2 1:85eb1c94154a 29 int Nums[7] = {0,0,0,0,0,0,0};
kit2 1:85eb1c94154a 30 int counter = 0;
kit2 1:85eb1c94154a 31 int count2 = 0;
kit2 1:85eb1c94154a 32
kit2 1:85eb1c94154a 33 //------------------------------------------- Create the interrupt receiver object on pin 26
4180_1 0:e09703934ff4 34 InterruptIn interrupt(p26);
kit2 1:85eb1c94154a 35
4180_1 0:e09703934ff4 36
kit2 1:85eb1c94154a 37 //-------------------------------------------------------- Setup the i2c bus on pins 28 and 27
kit2 1:85eb1c94154a 38 I2C i2c(p9, p10);
kit2 1:85eb1c94154a 39
4180_1 0:e09703934ff4 40
kit2 1:85eb1c94154a 41 //------------------------------------------ constructor(i2c object, i2c address of the mpr121)
4180_1 0:e09703934ff4 42 Mpr121 mpr121(&i2c, Mpr121::ADD_VSS);
4180_1 0:e09703934ff4 43
kit2 1:85eb1c94154a 44 //-------------------------------------------------------------------touch panel initialised
kit2 1:85eb1c94154a 45
kit2 1:85eb1c94154a 46
kit2 1:85eb1c94154a 47
kit2 1:85eb1c94154a 48 //---------------------------------------------------------------------------------------------playing audio
kit2 1:85eb1c94154a 49 AnalogOut DACout(p18);
kit2 1:85eb1c94154a 50 DigitalOut digout(LED4);
kit2 1:85eb1c94154a 51 Ticker tick;
kit2 1:85eb1c94154a 52 SDFileSystem sd(p5, p6, p7, p8, "sd"); // NGX mbed base board
kit2 1:85eb1c94154a 53
kit2 1:85eb1c94154a 54 #define SAMPLE_FREQ 40000
kit2 1:85eb1c94154a 55 #define BUF_SIZE (SAMPLE_FREQ/10)
kit2 1:85eb1c94154a 56 #define SLICE_BUF_SIZE 1
kit2 1:85eb1c94154a 57
kit2 1:85eb1c94154a 58 void dac_out(void);
kit2 1:85eb1c94154a 59 void play_wave(char *);
kit2 1:85eb1c94154a 60 void cleanup(char *);
kit2 1:85eb1c94154a 61 void fill_adc_buf(short *, unsigned);
kit2 1:85eb1c94154a 62 void swapword(unsigned *);
kit2 1:85eb1c94154a 63
kit2 1:85eb1c94154a 64 // a FIFO for the DAC
kit2 1:85eb1c94154a 65 short DAC_fifo[256];
kit2 1:85eb1c94154a 66 short DAC_wptr;
kit2 1:85eb1c94154a 67 short DAC_rptr;
kit2 1:85eb1c94154a 68 short DAC_on;
kit2 1:85eb1c94154a 69
kit2 1:85eb1c94154a 70 typedef struct uFMT_STRUCT {
kit2 1:85eb1c94154a 71 short comp_code;
kit2 1:85eb1c94154a 72 short num_channels;
kit2 1:85eb1c94154a 73 unsigned sample_rate;
kit2 1:85eb1c94154a 74 unsigned avg_Bps;
kit2 1:85eb1c94154a 75 short block_align;
kit2 1:85eb1c94154a 76 short sig_bps;
kit2 1:85eb1c94154a 77 } FMT_STRUCT;
kit2 1:85eb1c94154a 78 void play_wave(char *wavname)
kit2 1:85eb1c94154a 79 {
kit2 1:85eb1c94154a 80 unsigned chunk_id,chunk_size,channel;
kit2 1:85eb1c94154a 81 // unsigned *data_wptr,data,samp_int,i;
kit2 1:85eb1c94154a 82 unsigned data,samp_int,i;
kit2 1:85eb1c94154a 83 short dac_data;
kit2 1:85eb1c94154a 84 char *slice_buf;
kit2 1:85eb1c94154a 85 short *data_sptr;
kit2 1:85eb1c94154a 86 // char *data_bptr;
kit2 1:85eb1c94154a 87 FMT_STRUCT wav_format;
kit2 1:85eb1c94154a 88 FILE *wavfile;
kit2 1:85eb1c94154a 89 long slice,num_slices;
kit2 1:85eb1c94154a 90 DAC_wptr=0;
kit2 1:85eb1c94154a 91 DAC_rptr=0;
kit2 1:85eb1c94154a 92 for (i=0;i<256;i+=2)
kit2 1:85eb1c94154a 93 {
kit2 1:85eb1c94154a 94 DAC_fifo[i]=0;
kit2 1:85eb1c94154a 95 DAC_fifo[i+1]=3000;
kit2 1:85eb1c94154a 96 }
kit2 1:85eb1c94154a 97 DAC_wptr=4;
kit2 1:85eb1c94154a 98 DAC_on=0;
kit2 1:85eb1c94154a 99
kit2 1:85eb1c94154a 100 led1=led2=led3=led4=0;
kit2 1:85eb1c94154a 101
kit2 1:85eb1c94154a 102 wavfile=fopen(wavname,"rb");
kit2 1:85eb1c94154a 103 if (!wavfile) {
kit2 1:85eb1c94154a 104 printf("Unable to open wav file '%s'\n",wavname);
kit2 1:85eb1c94154a 105 exit(1);
kit2 1:85eb1c94154a 106 }
kit2 1:85eb1c94154a 107
kit2 1:85eb1c94154a 108 fread(&chunk_id,4,1,wavfile);
kit2 1:85eb1c94154a 109 fread(&chunk_size,4,1,wavfile);
kit2 1:85eb1c94154a 110 while (!feof(wavfile)) {
kit2 1:85eb1c94154a 111 switch (chunk_id) {
kit2 1:85eb1c94154a 112 case 0x46464952:
kit2 1:85eb1c94154a 113 fread(&data,4,1,wavfile);
kit2 1:85eb1c94154a 114 break;
kit2 1:85eb1c94154a 115 case 0x20746d66:
kit2 1:85eb1c94154a 116 fread(&wav_format,sizeof(wav_format),1,wavfile);
kit2 1:85eb1c94154a 117 if (chunk_size > sizeof(wav_format))
kit2 1:85eb1c94154a 118 fseek(wavfile,chunk_size-sizeof(wav_format),SEEK_CUR);
kit2 1:85eb1c94154a 119 // create a slice buffer large enough to hold multiple slices
kit2 1:85eb1c94154a 120 slice_buf=(char *)malloc(wav_format.block_align*SLICE_BUF_SIZE);
kit2 1:85eb1c94154a 121 if (!slice_buf) {
kit2 1:85eb1c94154a 122 exit(1);
kit2 1:85eb1c94154a 123 }
kit2 1:85eb1c94154a 124 break;
kit2 1:85eb1c94154a 125 case 0x61746164:
kit2 1:85eb1c94154a 126 slice_buf=(char *)malloc(wav_format.block_align*SLICE_BUF_SIZE);
kit2 1:85eb1c94154a 127 if (!slice_buf) {
kit2 1:85eb1c94154a 128 exit(1);
kit2 1:85eb1c94154a 129 } num_slices=chunk_size/wav_format.block_align;
kit2 1:85eb1c94154a 130 samp_int=1000000/(wav_format.sample_rate);
kit2 1:85eb1c94154a 131
kit2 1:85eb1c94154a 132 // starting up ticker to write samples out -- no printfs until tick.detach is called
kit2 1:85eb1c94154a 133 tick.attach_us(&dac_out, samp_int);
kit2 1:85eb1c94154a 134 DAC_on=1;
kit2 1:85eb1c94154a 135 led2=1;
kit2 1:85eb1c94154a 136 for (slice=0;slice<num_slices;slice+=SLICE_BUF_SIZE) {
kit2 1:85eb1c94154a 137 fread(slice_buf,wav_format.block_align*SLICE_BUF_SIZE,1,wavfile);
kit2 1:85eb1c94154a 138 if (feof(wavfile)) {
kit2 1:85eb1c94154a 139 exit(1);
kit2 1:85eb1c94154a 140 }
kit2 1:85eb1c94154a 141 data_sptr=(short *)slice_buf;
kit2 1:85eb1c94154a 142 for (i=0;i<SLICE_BUF_SIZE;i++) {
kit2 1:85eb1c94154a 143 dac_data=0;
kit2 1:85eb1c94154a 144
kit2 1:85eb1c94154a 145 // for a stereo wave file average the two channels.
kit2 1:85eb1c94154a 146 for (channel=0;channel<wav_format.num_channels;channel++) {
kit2 1:85eb1c94154a 147 switch (wav_format.sig_bps) {
kit2 1:85eb1c94154a 148 case 16:
kit2 1:85eb1c94154a 149 dac_data+=( ((int)(*data_sptr++)) +32768)>>5;
kit2 1:85eb1c94154a 150 break;
kit2 1:85eb1c94154a 151 }
kit2 1:85eb1c94154a 152 }
kit2 1:85eb1c94154a 153 dac_data>>=1;
kit2 1:85eb1c94154a 154 DAC_fifo[DAC_wptr]=dac_data;
kit2 1:85eb1c94154a 155 DAC_wptr=(DAC_wptr+1) & 0xff;
kit2 1:85eb1c94154a 156 while (DAC_wptr==DAC_rptr) {
kit2 1:85eb1c94154a 157 led1=1;
kit2 1:85eb1c94154a 158 }
kit2 1:85eb1c94154a 159 led1=0;
kit2 1:85eb1c94154a 160 }
kit2 1:85eb1c94154a 161 }
kit2 1:85eb1c94154a 162 DAC_on=0;
kit2 1:85eb1c94154a 163 led2=0;
kit2 1:85eb1c94154a 164 tick.detach();
kit2 1:85eb1c94154a 165 led3=1;
kit2 1:85eb1c94154a 166 free(slice_buf);
kit2 1:85eb1c94154a 167 break;
kit2 1:85eb1c94154a 168 case 0x5453494c:
kit2 1:85eb1c94154a 169 fseek(wavfile,chunk_size,SEEK_CUR);
kit2 1:85eb1c94154a 170 break;
kit2 1:85eb1c94154a 171 default:
kit2 1:85eb1c94154a 172 data=fseek(wavfile,chunk_size,SEEK_CUR);
kit2 1:85eb1c94154a 173 break;
kit2 1:85eb1c94154a 174 }
kit2 1:85eb1c94154a 175 fread(&chunk_id,4,1,wavfile);
kit2 1:85eb1c94154a 176 fread(&chunk_size,4,1,wavfile);
kit2 1:85eb1c94154a 177 }
kit2 1:85eb1c94154a 178 fclose(wavfile);
kit2 1:85eb1c94154a 179 led1=0;
kit2 1:85eb1c94154a 180 }
kit2 1:85eb1c94154a 181
kit2 1:85eb1c94154a 182
kit2 1:85eb1c94154a 183 void dac_out()
kit2 1:85eb1c94154a 184 {
kit2 1:85eb1c94154a 185 if (DAC_on) {
kit2 1:85eb1c94154a 186 digout=1;
kit2 1:85eb1c94154a 187 DACout.write_u16(DAC_fifo[DAC_rptr]);
kit2 1:85eb1c94154a 188 DAC_rptr=(DAC_rptr+1) & 0xff;
kit2 1:85eb1c94154a 189 digout=0;
kit2 1:85eb1c94154a 190 }
kit2 1:85eb1c94154a 191 }
kit2 1:85eb1c94154a 192
kit2 1:85eb1c94154a 193
kit2 1:85eb1c94154a 194
kit2 1:85eb1c94154a 195
kit2 1:85eb1c94154a 196 //---------------------------------------------------------------------------------------------
kit2 1:85eb1c94154a 197
kit2 1:85eb1c94154a 198 //-------------------------------------------------------------------------------obtaining input
kit2 1:85eb1c94154a 199
4180_1 0:e09703934ff4 200 void fallInterrupt() {
kit2 1:85eb1c94154a 201 int key_code=0;
4180_1 0:e09703934ff4 202 int i=0;
4180_1 0:e09703934ff4 203 int value=mpr121.read(0x00);
4180_1 0:e09703934ff4 204 value +=mpr121.read(0x01)<<8;
kit2 1:85eb1c94154a 205
4180_1 0:e09703934ff4 206 i=0;
4180_1 0:e09703934ff4 207 // puts key number out to LEDs for demo
kit2 1:85eb1c94154a 208 for (i=0; i<12; i++)
kit2 1:85eb1c94154a 209 {
kit2 1:85eb1c94154a 210 if (((value>>i)&0x01)==1)
kit2 1:85eb1c94154a 211 {
kit2 1:85eb1c94154a 212 key_code=i;
kit2 1:85eb1c94154a 213 lcd.printf("%d", i);
kit2 1:85eb1c94154a 214 if(counter < 7)
kit2 1:85eb1c94154a 215 {
kit2 1:85eb1c94154a 216 Nums[counter] = i;
kit2 1:85eb1c94154a 217 counter++;
kit2 1:85eb1c94154a 218 }
4180_1 0:e09703934ff4 219 }
kit2 1:85eb1c94154a 220 }
4180_1 0:e09703934ff4 221 led4=key_code & 0x01;
4180_1 0:e09703934ff4 222 led3=(key_code>>1) & 0x01;
4180_1 0:e09703934ff4 223 led2=(key_code>>2) & 0x01;
4180_1 0:e09703934ff4 224 led1=(key_code>>3) & 0x01;
4180_1 0:e09703934ff4 225 }
kit2 1:85eb1c94154a 226
4180_1 0:e09703934ff4 227
kit2 1:85eb1c94154a 228 //------------------------------------------------------------------------------MAIN
4180_1 0:e09703934ff4 229
4180_1 0:e09703934ff4 230
kit2 1:85eb1c94154a 231 int main()
kit2 1:85eb1c94154a 232 {
4180_1 0:e09703934ff4 233
kit2 1:85eb1c94154a 234 //------------------------------------------------to start enter new password which user wants to set
kit2 1:85eb1c94154a 235 lcd.cls();
kit2 1:85eb1c94154a 236 lcd.printf("enter your new password\n");
kit2 1:85eb1c94154a 237 play_wave("/sd/forest.wav");
kit2 1:85eb1c94154a 238 wait(0.5);
4180_1 0:e09703934ff4 239
kit2 1:85eb1c94154a 240 int k;
kit2 1:85eb1c94154a 241 //----------------------------------------------enter password
kit2 1:85eb1c94154a 242 while(1)
kit2 1:85eb1c94154a 243 {
kit2 1:85eb1c94154a 244 interrupt.fall(&fallInterrupt);
kit2 1:85eb1c94154a 245 interrupt.mode(PullUp);
kit2 1:85eb1c94154a 246 if(counter==7){
kit2 1:85eb1c94154a 247 break;}
4180_1 0:e09703934ff4 248 }
kit2 1:85eb1c94154a 249
kit2 1:85eb1c94154a 250
kit2 1:85eb1c94154a 251 for (k=0; k<7; k++)
kit2 1:85eb1c94154a 252 {
kit2 1:85eb1c94154a 253 org[k]=Nums[k];
kit2 1:85eb1c94154a 254 }
kit2 1:85eb1c94154a 255
kit2 1:85eb1c94154a 256 wait(1);
kit2 1:85eb1c94154a 257
kit2 1:85eb1c94154a 258 AGAIN:
kit2 1:85eb1c94154a 259 lcd.cls();
kit2 1:85eb1c94154a 260 lcd.printf("1-open door\n2-reset password");
kit2 1:85eb1c94154a 261 play_wave("/sd/forest.wav");
4180_1 0:e09703934ff4 262 interrupt.fall(&fallInterrupt);
4180_1 0:e09703934ff4 263 interrupt.mode(PullUp);
kit2 1:85eb1c94154a 264
kit2 1:85eb1c94154a 265 while (1)
kit2 1:85eb1c94154a 266 {
kit2 1:85eb1c94154a 267 counter=0;
kit2 1:85eb1c94154a 268 if(Nums[0]==1)
kit2 1:85eb1c94154a 269 {
kit2 1:85eb1c94154a 270 lcd.cls();
kit2 1:85eb1c94154a 271 //---------------------------------------------------enter the password
kit2 1:85eb1c94154a 272 lcd.printf("enter your password\n");
kit2 1:85eb1c94154a 273 play_wave("/sd/forest.wav");
kit2 1:85eb1c94154a 274 wait(1);
kit2 1:85eb1c94154a 275
kit2 1:85eb1c94154a 276 while(1)
kit2 1:85eb1c94154a 277 {
kit2 1:85eb1c94154a 278 interrupt.fall(&fallInterrupt);
kit2 1:85eb1c94154a 279 interrupt.mode(PullUp);
kit2 1:85eb1c94154a 280 if(counter==7){break;}
kit2 1:85eb1c94154a 281 }
kit2 1:85eb1c94154a 282 if(counter == 7)
kit2 1:85eb1c94154a 283 {
kit2 1:85eb1c94154a 284 wait(1);
kit2 1:85eb1c94154a 285 //lcd.printf("%d",Nums[4]);
kit2 1:85eb1c94154a 286 for(k=0;k<7;k++)
kit2 1:85eb1c94154a 287 {
kit2 1:85eb1c94154a 288 lcd.printf("%d",Nums[k]);
kit2 1:85eb1c94154a 289 wait(1);
kit2 1:85eb1c94154a 290 }
kit2 1:85eb1c94154a 291 if((Nums[0] == org[0]) && (Nums[1] == org[1]) && (Nums[2] == org[2])&&(Nums[3] == org[3]) && (Nums[4] == org[4]) &&(Nums[5] == org[5])&& (Nums[6] == org[6]))
kit2 1:85eb1c94154a 292 {
kit2 1:85eb1c94154a 293 lcd.cls();
kit2 1:85eb1c94154a 294 lcd.printf("password is correct, door open\n");
kit2 1:85eb1c94154a 295 servo=1;
kit2 1:85eb1c94154a 296 wait(1);
kit2 1:85eb1c94154a 297 lcd.cls();
kit2 1:85eb1c94154a 298 lcd.printf("opening door...\n");
kit2 1:85eb1c94154a 299 // play_wave("/sd/forest.wav");
kit2 1:85eb1c94154a 300 wait(10);
kit2 1:85eb1c94154a 301 goto AGAIN;
kit2 1:85eb1c94154a 302 }
kit2 1:85eb1c94154a 303 else
kit2 1:85eb1c94154a 304 {
kit2 1:85eb1c94154a 305 lcd.cls();
kit2 1:85eb1c94154a 306 lcd.printf("password incorrect.retry\n");
kit2 1:85eb1c94154a 307 play_wave("/sd/forest.wav");
kit2 1:85eb1c94154a 308 goto AGAIN;
kit2 1:85eb1c94154a 309 }
kit2 1:85eb1c94154a 310 }
kit2 1:85eb1c94154a 311 }
kit2 1:85eb1c94154a 312
kit2 1:85eb1c94154a 313
kit2 1:85eb1c94154a 314 wait(1);
kit2 1:85eb1c94154a 315 if(Nums[0]==2)
kit2 1:85eb1c94154a 316 {
kit2 1:85eb1c94154a 317 wait(1);
kit2 1:85eb1c94154a 318 counter=0;
kit2 1:85eb1c94154a 319 lcd.cls();
kit2 1:85eb1c94154a 320 lcd.printf("enter your old password\n");
kit2 1:85eb1c94154a 321 play_wave("/sd/forest.wav");
kit2 1:85eb1c94154a 322 while(1)
kit2 1:85eb1c94154a 323 {
kit2 1:85eb1c94154a 324 interrupt.fall(&fallInterrupt);
kit2 1:85eb1c94154a 325 interrupt.mode(PullUp);
kit2 1:85eb1c94154a 326 if(counter==7){break;}
kit2 1:85eb1c94154a 327 }
kit2 1:85eb1c94154a 328
kit2 1:85eb1c94154a 329 if(counter == 7)
kit2 1:85eb1c94154a 330 {
kit2 1:85eb1c94154a 331
kit2 1:85eb1c94154a 332 if((Nums[0] == org[0]) && (Nums[1] == org[1]) && (Nums[2] == org[2])&&(Nums[3] == org[3]) && (Nums[4] == org[4]) &&(Nums[5] == org[5])&& (Nums[6] == org[6]))
kit2 1:85eb1c94154a 333 {
kit2 1:85eb1c94154a 334 counter=0;
kit2 1:85eb1c94154a 335 lcd.cls();
kit2 1:85eb1c94154a 336 lcd.printf("enter your new password");
kit2 1:85eb1c94154a 337 play_wave("/sd/forest.wav");
kit2 1:85eb1c94154a 338 while(1)
kit2 1:85eb1c94154a 339 {
kit2 1:85eb1c94154a 340 interrupt.fall(&fallInterrupt);
kit2 1:85eb1c94154a 341 interrupt.mode(PullUp);
kit2 1:85eb1c94154a 342 if(counter==7){break;}
kit2 1:85eb1c94154a 343 }
kit2 1:85eb1c94154a 344
kit2 1:85eb1c94154a 345 for (k=0; k<7; k++)
kit2 1:85eb1c94154a 346 {
kit2 1:85eb1c94154a 347 org[k]=Nums[k];
kit2 1:85eb1c94154a 348 }
kit2 1:85eb1c94154a 349
kit2 1:85eb1c94154a 350 lcd.cls();
kit2 1:85eb1c94154a 351 lcd.printf("password changed");
kit2 1:85eb1c94154a 352 play_wave("/sd/forest.wav");
kit2 1:85eb1c94154a 353 goto AGAIN;
kit2 1:85eb1c94154a 354 }
kit2 1:85eb1c94154a 355 else
kit2 1:85eb1c94154a 356 {
kit2 1:85eb1c94154a 357 lcd.cls();
kit2 1:85eb1c94154a 358 lcd.printf("password incorrect.retry\n");
kit2 1:85eb1c94154a 359 play_wave("/sd/forest.wav");
kit2 1:85eb1c94154a 360 goto AGAIN;
kit2 1:85eb1c94154a 361 }
kit2 1:85eb1c94154a 362 }
4180_1 0:e09703934ff4 363 }
kit2 1:85eb1c94154a 364 }
kit2 1:85eb1c94154a 365 }