I have had one last try at using the SD card.
I modified the Adafruit wave library to take my bcd inputs, but its exactly the same, it reads the 256Mb cards, but not most of the 2Gb cards.
Heres the code below, I dont know if there is something stupid, otherwise I will carry on with the eeprom try, which I am rather out of my depth on I must confess...
#include <FatReader.h>
#include <SdReader.h>
#include <avr/pgmspace.h>
#include "WaveUtil.h"
#include "WaveHC.h"
SdReader card; // This object holds the information for the card
FatVolume vol; // This holds the information for the partition on the card
FatReader root; // This holds the information for the filesystem on the card
FatReader f;
// This holds the information for the file we're play
WaveHC wave;
// This is the only wave (audio) object, since we will only play one at a time
int talkingPin = 19; // high while audio playing to video chip to keep number on.
int aPin =18; //define pin numbers for bcd inputs from HT12D
int bPin =17;
int cPin =15;
int dPin =16;
int vtPin = 14; // define pin numbers for valid transmission input from HT12D
int track ; // define audio track number
int bcda ; // define bcd digitalreads for BCD/dec conversion
int bcdb;
int bcdc;
int bcdd;
int valid ; // to be set high if vt in
// this handy function will return the number of bytes currently free in RAM, great for debugging!
int freeRam(void)
{
extern int __bss_end;
extern int *__brkval;
int free_memory;
if((int)__brkval == 0) {
free_memory = ((int)&free_memory) - ((int)&__bss_end);
}
else {
free_memory = ((int)&free_memory) - ((int)__brkval);
}
return free_memory;
}
void sdErrorCheck(void)
{
if (!card.errorCode()) return;
putstring("\n\rSD I/O error: ");
Serial.print(card.errorCode(), HEX);
putstring(", ");
Serial.println(card.errorData(), HEX);
while(1);
}
void setup() {
// set up serial port
Serial.begin(9600);
pinMode (aPin,INPUT); //bcd inputs from HT12
pinMode (bPin,INPUT);
pinMode (cPin,INPUT);
pinMode (dPin,INPUT);
pinMode (vtPin,INPUT); // valid trasnmission input
pinMode (talkingPin,OUTPUT); // display enable to vga chip
putstring_nl("WaveHC with 9 inputs");
putstring("Free RAM: ");
// This can help with debugging, running out of RAM is bad
Serial.println(freeRam());
// if this is under 150 bytes it may spell trouble!
// Set the output pins for the DAC control. This pins are defined in the library
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
// pin13 LED
pinMode(13, OUTPUT);
if (!card.init(true)) { //play with 4 MHz spi if 8MHz isn't working for you ***** TRIED BOTH
// if (!card.init()) {
//play with 8 MHz spi (default faster!)
putstring_nl("Card init. failed!"); // Something went wrong, lets print out why
sdErrorCheck();
while(1);
// then 'halt' - do nothing!
}
// enable optimize read - some cards may timeout. Disable if you're having problems *** TRIED WITH AND WITHOUT AND true
// card.partialBlockRead(false);
// Now we will look for a FAT partition!
uint8_t part;
for (part = 0; part < 5; part++) { // we have up to 5 slots to look in
if (vol.init(card, part))
break;
// we found one, lets bail
}
if (part == 5) {
// if we ended up not finding one :(
putstring_nl("No valid FAT partition!");
sdErrorCheck();
// Something went wrong, lets print out why
while(1);
// then 'halt' - do nothing!
}
// Lets tell the user about what we found
putstring("Using partition ");
Serial.print(part, DEC);
putstring(", type is FAT");
Serial.println(vol.fatType(),DEC); // FAT16 or FAT32?
// Try to open the root directory
if (!root.openRoot(vol)) {
putstring_nl("Can't open root dir!"); // Something went wrong,
while(1);
// then 'halt' - do nothing!
}
// Whew! We got past the tough parts.
putstring_nl("Ready!");
}
void loop() {
bcda = digitalRead ( aPin ); // read the state of the video micro "decode" data outputs
bcdb = digitalRead ( bPin );
bcdc = digitalRead ( cPin );
bcdd = digitalRead ( dPin );
valid = digitalRead ( vtPin ); // check if signal received, set valid high
if (bcda==1 && bcdb==0 && bcdc == 0 && bcdd == 0 ) { //longwinded bcd / dec decoding to give track number to be read
track = 1;
}
if (bcda==0 && bcdb==1 && bcdc == 0 && bcdd == 0 ) {
track = 2;
}
if (bcda==1 && bcdb==1 && bcdc == 0 && bcdd == 0 ) {
track = 3;
}
if (bcda==0 && bcdb==0 && bcdc == 1 && bcdd == 0 ) {
track = 4;
}
if (bcda==1 && bcdb==0 && bcdc == 1 && bcdd == 0 ) {
track = 5;
}
if (bcda==0 && bcdb==1 && bcdc == 1 && bcdd == 0 ) {
track = 6;
}
if (bcda==1 && bcdb==1 && bcdc == 1 && bcdd == 0 ) {
track = 7;
}
if (bcda==0 && bcdb==0 && bcdc == 0 && bcdd == 1 ) {
track = 8;
}
if (bcda==1 && bcdb==0 && bcdc == 0 && bcdd == 1 ) {
track = 9;
}
// if ( valid == HIGH ){
if (track==1 ) {
playcomplete("doornum1.wav");
}
else;
if (track==2) {
playcomplete("doornum2.wav");
}
else;
if (track==3) {
playcomplete("doornum3.wav");
}
else;
if (track==4) {
playcomplete("doornum4.wav");
}
else;
if (track==5) {
playcomplete("doornum5.wav");
}
else;
if (track==6) {
playcomplete("doornum6.wav");
}
else;
if (track==7) {
playcomplete("doornum7.wav");
}
else;
if (track==8) {
playcomplete("doornum8.wav");
}
else;
if (track==9) {
playcomplete("doornum9.wav");
}
//}
}
// Plays a full file from beginning to end with no pause.
void playcomplete(char *name) {
// call our helper to find and play this name
playfile(name);
if (wave.isplaying) {// set display enable high to vga chip
digitalWrite(talkingPin, LOW);
}
else
{
digitalWrite(talkingPin, HIGH);
}
while (wave.isplaying) {
}
// now its done playing
}
void playfile(char *name) {
// see if the wave object is currently doing something
//if (wave.isplaying) {// already playing something, so stop it! cant happen with talkinpin
// wave.stop(); // stop it
//}
// look in the root directory and open the file
if (!f.open(root, name)) {
putstring("Couldn't open file ");
Serial.print(name);
return;
}
// OK read the file and turn it into a wave object
if (!wave.create(f)) {
putstring_nl("Not a valid WAV");
return;
}
if (valid == 1){ // wont run without this here
// ok time to play! start playback
wave.play();
}
}
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