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30 lines
753 B
C++
30 lines
753 B
C++
#include <SD.h>
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#include "sdtape.h"
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#include "checkpoint.h"
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#include "hardware.h"
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static char buf[32];
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static char chkpt[] = { "CHKPOINT" };
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static int cpid = 0;
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const char *checkpoint(sdtape &tape, const char *dir) {
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tape.stop();
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snprintf(buf, sizeof(buf), "%s%s.%03d", dir, chkpt, cpid++);
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File file = SD.open(buf, O_WRITE | O_CREAT | O_TRUNC);
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hardware_checkpoint(file);
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file.close();
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tape.start(dir);
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return buf;
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}
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void restore(sdtape &tape, const char *dir, const char *filename) {
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tape.stop();
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snprintf(buf, sizeof(buf), "%s%s", dir, filename);
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File file = SD.open(buf, O_READ);
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hardware_restore(file);
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file.close();
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int n = sscanf(buf + strlen(dir), "%[A-Z0-9].%d", chkpt, &cpid);
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cpid = (n == 1)? 0: cpid+1;
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tape.start(dir);
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}
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