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/*
* Copy Example - only runs on chips with 2K or more RAM
*
* This sketch copies the file APPEND.TXT, created by the
* SdFatAppend.pde example, to the file ACOPY.TXT.
*/
#include <SdFat.h>
#include <SdFatUtil.h> // use functions to print strings from flash memory
Sd2Card card;
SdVolume volume;
SdFile root;
SdFile from; // read file
SdFile copy; // write file
// large buffer to test for bugs. 512 bytes runs much faster.
char buf[600];
// 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();
PgmPrintln("Type any character to start");
while (!Serial.available());
PgmPrint("FreeRam: ");
Serial.println(FreeRam());
// 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");
strcpy_P(buf, PSTR("APPEND.TXT"));
// open for read
if (!from.open(&root, buf, O_READ)) {
PgmPrint("Can't open ");
Serial.println(buf);
PgmPrintln("Run the append example to create the file.");
error("from.open failed");
}
strcpy_P(buf, PSTR("ACOPY.TXT"));
// create if needed, truncate to zero length, open for write
if (!copy.open(&root, buf, O_CREAT | O_TRUNC | O_WRITE)) {
error("copy.open failed");
}
// count for printing periods
uint16_t p = 0;
int16_t n;
while ((n = from.read(buf, sizeof(buf))) > 0) {
if (copy.write(buf, n) != n) error("write failed");
// print progress periods
if (!(p++ % 25)) Serial.print('.');
if (!(p % 500)) Serial.println();
}
Serial.println();
if (n != 0) error ("read");
// force write of directory entry and last data
if (!copy.close()) error("copy.close failed");
PgmPrintln("Copy done.");
}
void loop(void) {}
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