38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
#ifndef SDCARD_MANAGER_H
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#define SDCARD_MANAGER_H
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#include <Arduino.h>
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#include <vector>
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class SDCardManager {
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public:
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SDCardManager(uint8_t epd_sclk, uint8_t sd_miso, uint8_t epd_mosi, uint8_t sd_cs, uint8_t eink_cs);
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bool begin();
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bool ready() const;
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std::vector<String> listFiles(const char* path = "/", int maxFiles = 200);
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// Read the entire file at `path` into a String. Returns empty string on failure.
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String readFile(const char* path);
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// Low-memory helpers:
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// Stream the file contents to a `Print` (e.g. `Serial`, or any `Print`-derived object).
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// Returns true on success, false on failure.
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bool readFileToStream(const char* path, Print& out, size_t chunkSize = 256);
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// Read up to `bufferSize-1` bytes into `buffer`, null-terminating it. Returns bytes read.
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size_t readFileToBuffer(const char* path, char* buffer, size_t bufferSize, size_t maxBytes = 0);
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// Write a string to `path` on the SD card. Overwrites existing file.
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// Returns true on success.
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bool writeFile(const char* path, const String& content);
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// Ensure a directory exists, creating it if necessary. Returns true on success.
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bool ensureDirectoryExists(const char* path);
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private:
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uint8_t epd_sclk;
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uint8_t sd_miso;
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uint8_t epd_mosi;
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uint8_t sd_cs;
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uint8_t eink_cs;
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bool initialized = false;
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};
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#endif
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