PnM_spring17 / Mbed 2 deprecated SDfungerer

SD leseing til array

Dependencies:   SDFileSystem mbed

Fork of SDFileSystem_HelloWorld by mbed official

main.cpp@3:5a08f9ecfb16, 2017-04-24 (annotated)

Committer:
mathimat
Date:
Mon Apr 24 10:23:10 2017 +0000
Revision:
3:5a08f9ecfb16
Parent:
2:57156358b223 
test;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:bdbd3d6fc5d5 1 #include "mbed.h"
mathimat 3:5a08f9ecfb16 2 #include <stdio.h>
mathimat 3:5a08f9ecfb16 3 #include <string.h>
mbed_official 0:bdbd3d6fc5d5 4 #include "SDFileSystem.h"
mathimat 3:5a08f9ecfb16 5 #include "wavheader.h"
mathimat 1:d84eab100439 6
mathimat 1:d84eab100439 7 SDFileSystem sd(p5, p6, p7, p20, "sd"); // the pinout on the mbed Cool Components workshop board
mathimat 3:5a08f9ecfb16 8 SPI dac(p11,p12,p13);
mathimat 3:5a08f9ecfb16 9 DigitalOut LR(p14);
mathimat 3:5a08f9ecfb16 10 DigitalOut LED(LED1);
mathimat 3:5a08f9ecfb16 11 DigitalOut LEDn(LED1);
mathimat 3:5a08f9ecfb16 12 Ticker sampler;
mathimat 3:5a08f9ecfb16 13
mathimat 1:d84eab100439 14
mathimat 1:d84eab100439 15 char filer[64][64];
mathimat 3:5a08f9ecfb16 16 int numberOfFiles = 0; //files in filer array
mathimat 3:5a08f9ecfb16 17 int chuncksize = 0;
mathimat 3:5a08f9ecfb16 18 int readern = 0;
mathimat 3:5a08f9ecfb16 19 int playern = 0;
mathimat 3:5a08f9ecfb16 20 int16_t databuf[1024];
mathimat 3:5a08f9ecfb16 21 int16_t sbuffer[1];
mathimat 3:5a08f9ecfb16 22
mathimat 3:5a08f9ecfb16 23 struct WAV_HEADER wavHeader;
mathimat 1:d84eab100439 24
mathimat 1:d84eab100439 25
mathimat 2:57156358b223 26 void sdToArray(char directory[64]="/sd", char type[5] = ".wav")
mathimat 2:57156358b223 27 {
mathimat 2:57156358b223 28 DIR *d;
mathimat 1:d84eab100439 29 struct dirent *dir;
mathimat 2:57156358b223 30 d = opendir(directory);
mathimat 1:d84eab100439 31 char buffer[64];
mathimat 1:d84eab100439 32 if (d) {
mathimat 1:d84eab100439 33 while ((dir = readdir(d)) != NULL) {
mathimat 2:57156358b223 34 //leser alle filnavn fra sd kort og leger de i en buffer
mathimat 1:d84eab100439 35 sprintf(buffer, "%s", dir->d_name);
mathimat 2:57156358b223 36 //sjekker at filen ikke starter med [ . ] og slutter med valgt type (wav).
mathimat 2:57156358b223 37 //legger så disse i filer arrayet.
mathimat 2:57156358b223 38 if (!strcmp(strrchr(buffer, '\0') - 4, type)) {
mathimat 1:d84eab100439 39 if (strncmp(buffer, ".",1)) {
mathimat 2:57156358b223 40 strcpy(filer[numberOfFiles], buffer);
mathimat 2:57156358b223 41 numberOfFiles++;
mathimat 1:d84eab100439 42 }
mathimat 1:d84eab100439 43 }
mathimat 1:d84eab100439 44 }
mathimat 1:d84eab100439 45
mathimat 1:d84eab100439 46 closedir(d);
mbed_official 0:bdbd3d6fc5d5 47 }
mathimat 2:57156358b223 48 }
mathimat 1:d84eab100439 49
mathimat 3:5a08f9ecfb16 50 void analyzeWAV(char filnavn[64])
mathimat 3:5a08f9ecfb16 51 {
mathimat 3:5a08f9ecfb16 52 char dir[128] = "/sd/";
mathimat 3:5a08f9ecfb16 53 strcat(dir,filnavn);
mathimat 3:5a08f9ecfb16 54 FILE *fil = fopen(dir, "rb");
mathimat 3:5a08f9ecfb16 55 if(fil!=NULL) {
mathimat 3:5a08f9ecfb16 56 fread(&wavHeader,sizeof(wavHeader),1,fil);
mathimat 3:5a08f9ecfb16 57 fclose(fil);
mathimat 3:5a08f9ecfb16 58 printf("riff: %s \r\n", wavHeader.RIFF);
mathimat 3:5a08f9ecfb16 59 printf("wave: %s \r\n", wavHeader.WAVE);
mathimat 3:5a08f9ecfb16 60 printf("Samples: %d \r\n", wavHeader.SamplesPerSec);
mathimat 3:5a08f9ecfb16 61 printf("bitprsamp: %d \r\n", wavHeader.bitsPerSample);
mathimat 3:5a08f9ecfb16 62 printf("channels: %d \r\n", wavHeader.NumOfChan);
mathimat 3:5a08f9ecfb16 63 }
mathimat 3:5a08f9ecfb16 64 printf("funcedn");
mathimat 3:5a08f9ecfb16 65 fclose(fil);
mathimat 3:5a08f9ecfb16 66 }
mathimat 3:5a08f9ecfb16 67
mathimat 3:5a08f9ecfb16 68 void play()
mathimat 3:5a08f9ecfb16 69 {
mathimat 3:5a08f9ecfb16 70 if (playern<readern) {
mathimat 3:5a08f9ecfb16 71 LR = 0;
mathimat 3:5a08f9ecfb16 72 dac.write(sbuffer[1]);
mathimat 3:5a08f9ecfb16 73 LR = 1;
mathimat 3:5a08f9ecfb16 74 dac.write(sbuffer[1]);
mathimat 3:5a08f9ecfb16 75 LEDn != LEDn;
mathimat 3:5a08f9ecfb16 76 }
mathimat 3:5a08f9ecfb16 77 }
mathimat 2:57156358b223 78 int main()
mathimat 2:57156358b223 79 {
mathimat 3:5a08f9ecfb16 80 numberOfFiles=0;
mathimat 2:57156358b223 81 sdToArray();
mathimat 2:57156358b223 82 printf("WAV filer:\r\n");
mathimat 3:5a08f9ecfb16 83 for(int i = 0; i < numberOfFiles; i++) {
mathimat 2:57156358b223 84 printf("%d | %s \r\n",i,filer[i]);
mathimat 1:d84eab100439 85 }
mathimat 3:5a08f9ecfb16 86 printf("Skriv filnummer:");
mathimat 3:5a08f9ecfb16 87 int nummer;
mathimat 3:5a08f9ecfb16 88 scanf("%d", &nummer);
mathimat 3:5a08f9ecfb16 89 printf("%d - %s \r\n", nummer, filer[nummer]);
mathimat 3:5a08f9ecfb16 90 printf("\r\n END!! \r");
mathimat 3:5a08f9ecfb16 91
mathimat 3:5a08f9ecfb16 92 //
mathimat 3:5a08f9ecfb16 93 float frekvensplay = 1.0/wavHeader.SamplesPerSec;
mathimat 3:5a08f9ecfb16 94 printf("attacher-");
mathimat 3:5a08f9ecfb16 95 sampler.attach(&play,frekvensplay);
mathimat 3:5a08f9ecfb16 96 printf("spiller-");
mathimat 1:d84eab100439 97
mathimat 3:5a08f9ecfb16 98 char dir[128] = "/sd/";
mathimat 3:5a08f9ecfb16 99 strcat(dir,filer[nummer]);
mathimat 3:5a08f9ecfb16 100 FILE *fip = fopen(dir, "rb");
mathimat 3:5a08f9ecfb16 101 if(fip==NULL) {
mathimat 3:5a08f9ecfb16 102 printf("error opening wav %c - \r\n", dir);
mathimat 3:5a08f9ecfb16 103 }
mathimat 3:5a08f9ecfb16 104 fseek(fip, SEEK_SET, 0);
mathimat 3:5a08f9ecfb16 105 while(1) {
mathimat 3:5a08f9ecfb16 106 fread(sbuffer, 2,1,fip);
mathimat 3:5a08f9ecfb16 107 }
mbed_official 0:bdbd3d6fc5d5 108 }