hi friends i am doing an data logger project i'am using the below code... when i interact with harware i could'nt inizilaise the card this is ma error could any one help me out....
#include <Spi.h>
#include <sd-reader_config.h>
#include <sd_raw.h>
#include <sd_raw_config.h>
int print_disk_info();
int sample();
int readDisk();
byte incomingByte;
void printWelcome();
long int address;
byte tempBytes[2];
void setup()
{
Serial.begin(115200);
delay(1000);
printWelcome();
if(!sd_raw_init())
{
Serial.println("MMC/SD initialization failed");
}
print_disk_info();
//sd_raw_init();
}
void loop()
{
int i;
if(Serial.available()>0)
{
incomingByte=Serial.read();
switch(incomingByte)
{
case 114:
readDisk();
break;
case 115:
sample();
break;
default:
break;
}
}
}
int sample()
{
int i,j;
int temp;
byte low;
byte high;
byte inByte;
Serial.println();
Serial.println();
Serial.println("Sampling..");
for(i=0;i<20;i=i+2)
{
if(Serial.available()>0)
{
inByte=Serial.read();
if(inByte==113) return 0;
}
temp=analogRead(0);
Serial.print(temp,DEC);
Serial.print(" ");
//Convert int to 2 bytes
low=temp&0xFF;
high=temp>>8;
// Serial.print(temp,DEC);
//Serial.print(low,DEC);
//Serial.print(high,DEC);
tempBytes[0]=low;
tempBytes[1]=high;
if(!sd_raw_write(i,tempBytes,2))
{
Serial.print("Write error");
}
//sd_raw_sync();
delay(1000);
Serial.println();
}
return 1;
}
int readDisk()
{
byte low;
byte high;
byte info[2];
int i;
int result;
Serial.println();
for(i=0;i<50;i=i+2)
{
sd_raw_read(i,info,2);
//Serial.print(info[0],DEC);
//Serial.print(" ");
//Serial.print(info[1],DEC);
low=info[0];
high=info[1];
result=high<<8;
//result<<8;
Serial.print(" ");
Serial.print(result+low,DEC);
Serial.print(" ");
}
}
void printWelcome()
{
Serial.println("------------------------");
Serial.println("Data sampling system");
Serial.println("send r to read disk");
Serial.println("send s to start sampling");
Serial.println("send q to stop sampling");
Serial.println("Ready.....");
Serial.println("-------------------------");
}
int print_disk_info()
{
struct sd_raw_info disk_info;
if(!sd_raw_get_info(&disk_info))
{
return 0;
}
Serial.println();
Serial.print("rev: ");
Serial.print(disk_info.revision,HEX);
Serial.println();
Serial.print("serial: 0x");
Serial.print(disk_info.serial,HEX);
Serial.println();
Serial.print("date: ");
Serial.print(disk_info.manufacturing_month,DEC);
Serial.println();
Serial.print(disk_info.manufacturing_year,DEC);
Serial.println();
Serial.print("size: ");
Serial.print(disk_info.capacity,DEC);
Serial.println();
Serial.print("copy: ");
Serial.print(disk_info.flag_copy,DEC);
Serial.println();
Serial.print("wr.pr.: ");
Serial.print(disk_info.flag_write_protect_temp,DEC);
Serial.print('/');
Serial.print(disk_info.flag_write_protect,DEC);
Serial.println();
Serial.print("format: ");
Serial.print(disk_info.format,DEC);
Serial.println();
Serial.print("free: ");
return 1;
}