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/*
* This sketch reads and prints the file
* PRINT00.TXT created by SdFatPrint.pde or
* WRITE00.TXT created by SdFatWrite.pde
*/
#include <SdFat.h>
#include <SdFatUtil.h>
Sd2Card card;
SdVolume volume;
SdFile root;
SdFile file;
// store error strings in flash to save RAM
#define error(s) error_P(PSTR(s))
void error_P(const char* str) {
PgmPrint("error: ");
SerialPrintln_P(str);
if (card.errorCode()) {
PgmPrint("SD error: ");
Serial.print(card.errorCode(), HEX);
Serial.print(',');
Serial.println(card.errorData(), HEX);
}
while(1);
}
void setup(void) {
Serial.begin(9600);
Serial.println();
Serial.println("type any character to start");
while (!Serial.available());
Serial.println();
// initialize the SD card at SPI_HALF_SPEED to avoid bus errors with
// breadboards. use SPI_FULL_SPEED for better performance.
if (!card.init(SPI_HALF_SPEED)) error("card.init failed");
// initialize a FAT volume
if (!volume.init(&card)) error("volume.init failed");
// open the root directory
if (!root.openRoot(&volume)) error("openRoot failed");
// open a file
if (file.open(&root, "PRINT00.TXT", O_READ)) {
Serial.println("Opened PRINT00.TXT");
}
else if (file.open(&root, "WRITE00.TXT", O_READ)) {
Serial.println("Opened WRITE00.TXT");
}
else{
error("file.open failed");
}
Serial.println();
// copy file to serial port
int16_t n;
uint8_t buf[7];// nothing special about 7, just a lucky number.
while ((n = file.read(buf, sizeof(buf))) > 0) {
for (uint8_t i = 0; i < n; i++) Serial.print(buf[i]);
}
/* easier way
int16_t c;
while ((c = file.read()) > 0) Serial.print((char)c);
*/
Serial.println("\nDone");
}
void loop(void) {}
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