Read a wav file in an SD card with nios software

Dear Mods,

Hello,

The sd card audio player Demo project available with most of the Altera DE boards has all the functions that you need to read a wav file from SD card.

hmm.. can u send your full write/read program on SD Card. Because now, im stuck in build the read instruction

I guess we all have the same problem xD! if someone can do it with DE2-115 (read/write data with SD card or RS232 or even displayin using VGA )) pleaaase help xD! very urgent :s, let me a message at ch_natasha@hotmail.fr thanx !

Here is my program:

# include <stdio.h>#include <math.h># include <altera_up_sd_card_avalon_interface.h># include "functions.h"
//#include <time.h>
# define Pushbuttons ((volatile long *) 0x1011410)
short int sd_fileh;
int main()
{
//	clock_t tic, toc;
//	float run_time;
	printf("Running...press the button to begin\n");
	int N_samples = 256, NumChannels = 0, sampleRate = 0;
	int i,j;
	while(1)
	{
		long PBval;
		*Pushbuttons = 0; //clear out any changes so far
		PBval = *Pushbuttons;
		//	printf("not be pushed %ld\n",PBval);
		while (1)
		{
			PBval = *Pushbuttons;
			if (PBval == 0)
				break;
		}
		//	printf("pushed %ld\n",PBval);
//		short int temp;
		//	signed int *temp2;
		float data;
		//	double number;
		int count;
//		int n;
		// These variables are used
		// when wanting to display the header of the wav file
		long int long_total;
		short int byte1, byte2, byte3, byte4;
		signed int total;
		printf("Accessing SD Card ...\n");
		alt_up_sd_card_dev *sd_card_dev = alt_up_sd_card_open_dev(SDCARD_NAME);
		if(sd_card_dev != 0)
		{
			if(alt_up_sd_card_is_Present())
			{
				if(alt_up_sd_card_is_FAT16())
					printf("Card is FAT16\n");
				else
					printf("Card is not FAT16\n");
				//          sd_fileh = alt_up_sd_card_fopen("testfile.txt", true);
				sd_fileh = alt_up_sd_card_fopen("TESTSIG4.WAV", false);
				if (sd_fileh < 0)
					printf("Problem reading file. Error %i", sd_fileh);
				else // open the file
				{
					printf("Reading file...\n");
					//					// Jump over the header of the wav file
					//					count = 0;
					//					while (count < 44) // 44-byte header
					//					{
					//						alt_up_sd_card_read(sd_fileh);
					//						count++;
					//					}
					// Get information of number of channels
					count = 0;
					while (count < 22) // 44-byte header
					{
						alt_up_sd_card_read(sd_fileh);
						count++;
					}
					//					printf("NumChannels ");
					byte1 = 0;byte2 = 0;total = 0;
					byte1 = alt_up_sd_card_read(sd_fileh);
					byte2 = alt_up_sd_card_read(sd_fileh);
					total = (byte1 & 0x00ff) | (byte2 << 8);
					NumChannels = total;
					//					printf("%d\n",total);
					//					printf("SampleRate ");
					byte1 = 0;byte2 = 0;byte3 = 0;byte4 = 0;long_total = 0;
					byte1 = alt_up_sd_card_read(sd_fileh);
					byte2 = alt_up_sd_card_read(sd_fileh);
					byte3 = alt_up_sd_card_read(sd_fileh);
					byte4 = alt_up_sd_card_read(sd_fileh);
					long_total = (byte4 << 24) | (byte3 << 16) | (byte2 << 8) | ( byte1 & 0x000000ff);
					sampleRate = long_total;
					//					printf("%ld\n",long_total);
					count = 0;
					while (count < 16) // 44-byte header
					{
						alt_up_sd_card_read(sd_fileh);
						count++;
					}....