Ligne 183 : |
Ligne 183 : |
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| <nowiki>/* | | <nowiki>/* |
| + | * play recursively - possible stack overflow if subdirectories too nested |
| + | */ |
| + | void play(FatReader &dir) |
| + | { |
| + | FatReader file; |
| + | while (dir.readDir(dirBuf) > 0) { // Read every file in the directory one at a time |
| + | // skip . and .. directories |
| + | if (dirBuf.name[0] == '.') |
| + | continue; |
| + | |
| + | Serial.println(); // clear out a new line |
| + | |
| + | for (uint8_t i = 0; i < dirLevel; i++) |
| + | Serial.print(' '); // this is for prettyprinting, put spaces in front |
| + | |
| + | if (!file.open(vol, dirBuf)) { // open the file in the directory |
| + | Serial.println("file.open failed"); // something went wrong :( |
| + | while(1); // halt |
| + | } |
| + | |
| + | if (file.isDir()) { // check if we opened a new directory |
| + | putstring("Subdir: "); |
| + | printName(dirBuf); |
| + | dirLevel += 2; // add more spaces |
| + | // play files in subdirectory |
| + | play(file); // recursive! |
| + | dirLevel -= 2; |
| + | } |
| + | else { |
| + | // Aha! we found a file that isnt a directory |
| + | putstring("Playing "); printName(dirBuf); // print it out |
| + | if (!wave.create(file)) { // Figure out, is it a WAV proper? |
| + | putstring(" Not a valid WAV"); // ok skip it |
| + | } else { |
| + | Serial.println(); // Hooray it IS a WAV proper! |
| + | wave.play(); // make some noise! |
| + | |
| + | while (wave.isplaying) { // playing occurs in interrupts, so we print dots in realtime |
| + | putstring("."); |
| + | delay(100); |
| + | } |
| + | sdErrorCheck(); // everything OK? |
| + | // if (wave.errors)Serial.println(wave.errors); // wave decoding errors |
| + | } |
| + | } |
| + | } |
| + | } |
| + | </nowiki> |
| + | |
| + | == dap_hc.pde == |
| + | Here is the full sketch |
| + | |
| + | <nowiki>#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 |
| + | |
| + | uint8_t dirLevel; // indent level for file/dir names (for prettyprinting) |
| + | dir_t dirBuf; // buffer for directory reads |
| + | |
| + | WaveHC wave; // This is the only wave (audio) object, since we will only play one at a time |
| + | |
| + | // Function definitions (we define them here, but the code is below) |
| + | void lsR(FatReader &d); |
| + | void play(FatReader &dir); |
| + | |
| + | void setup() { |
| + | Serial.begin(9600); // set up Serial library at 9600 bps for debugging |
| + | |
| + | putstring_nl("\nWave test!"); // say we woke up! |
| + | |
| + | putstring("Free RAM: "); // This can help with debugging, running out of RAM is bad |
| + | Serial.println(freeRam()); |
| + | |
| + | // 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); |
| + | |
| + | // if (!card.init(true)) { //play with 4 MHz spi if 8MHz isn't working for you |
| + | 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 |
| + | card.partialBlockRead(true); |
| + | |
| + | // 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("Files found:"); |
| + | dirLevel = 0; |
| + | // Print out all of the files in all the directories. |
| + | lsR(root); |
| + | } |
| + | |
| + | //////////////////////////////////// LOOP |
| + | void loop() { |
| + | root.rewind(); |
| + | play(root); |
| + | } |
| + | |
| + | /////////////////////////////////// HELPERS |
| + | |
| + | // 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; |
| + | } |
| + | |
| + | /* |
| + | * print error message and halt if SD I/O error, great for debugging! |
| + | */ |
| + | 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); |
| + | } |
| + | /* |
| + | * print dir_t name field. The output is 8.3 format, so like SOUND.WAV or FILENAME.DAT |
| + | */ |
| + | void printName(dir_t &dir) |
| + | { |
| + | for (uint8_t i = 0; i < 11; i++) { // 8.3 format has 8+3 = 11 letters in it |
| + | if (dir.name[i] == ' ') |
| + | continue; // dont print any spaces in the name |
| + | if (i == 8) |
| + | Serial.print('.'); // after the 8th letter, place a dot |
| + | Serial.print(dir.name[i]); // print the n'th digit |
| + | } |
| + | if (DIR_IS_SUBDIR(dir)) |
| + | Serial.print('/'); // directories get a / at the end |
| + | } |
| + | /* |
| + | * list recursively - possible stack overflow if subdirectories too nested |
| + | */ |
| + | void lsR(FatReader &d) |
| + | { |
| + | int8_t r; // indicates the level of recursion |
| + | |
| + | while ((r = d.readDir(dirBuf)) > 0) { // read the next file in the directory |
| + | // skip subdirs . and .. |
| + | if (dirBuf.name[0] == '.') |
| + | continue; |
| + | |
| + | for (uint8_t i = 0; i < dirLevel; i++) |
| + | Serial.print(' '); // this is for prettyprinting, put spaces in front |
| + | printName(dirBuf); // print the name of the file we just found |
| + | Serial.println(); // and a new line |
| + | |
| + | if (DIR_IS_SUBDIR(dirBuf)) { // we will recurse on any direcory |
| + | FatReader s; // make a new directory object to hold information |
| + | dirLevel += 2; // indent 2 spaces for future prints |
| + | if (s.open(vol, dirBuf)) |
| + | lsR(s); // list all the files in this directory now! |
| + | dirLevel -=2; // remove the extra indentation |
| + | } |
| + | } |
| + | sdErrorCheck(); // are we doign OK? |
| + | } |
| + | /* |
| * play recursively - possible stack overflow if subdirectories too nested | | * play recursively - possible stack overflow if subdirectories too nested |
| */ | | */ |