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add macro switch for low-memory devices other than __AVR__ #44

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add macro switch for low-memory devices other than __AVR__ #44

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14 changes: 7 additions & 7 deletions src/SD.h
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Original file line number Diff line number Diff line change
Expand Up @@ -41,16 +41,16 @@
#define BUILTIN_SDCARD 254
#endif

#if defined(__arm__)
// Support everything on 32 bit boards with enough memory
#define SDFAT_FILE FsFile
#define SDFAT_BASE SdFs
#define MAX_FILENAME_LEN 256
#elif defined(__AVR__)
#if defined(__AVR__) || defined(SDFAT_LOWMEM)
// Limit to 32GB cards on 8 bit Teensy with only limited memory
#define SDFAT_FILE File32
#define SDFAT_BASE SdFat32
#define MAX_FILENAME_LEN 64
#elif defined(__arm__)
// Support everything on 32 bit boards with enough memory
#define SDFAT_FILE FsFile
#define SDFAT_BASE SdFs
#define MAX_FILENAME_LEN 256
#endif

class SDFile : public FileImpl
Expand Down Expand Up @@ -217,7 +217,7 @@ class SDClass : public FS
// can be used to detect if an chip is inserted. On BUILTIN_SDCARD
// we will default to use it if you use the begin method, howver
// if you bypass this and call directly to SDFat begin, then you
// can use this to let us know.
// can use this to let us know.
bool setMediaDetectPin(uint8_t pin);

public: // allow access, so users can mix SD & SdFat APIs
Expand Down