Seeed_Arduino_FS

Seeed-Arduino-fs

介绍

Arduino的轻量级FATF端口。该库包含通过SPI驱动SD卡的例程。文件系统部分是通用的，这意味着您可以轻松地将其移植到其他类型的内存中，例如QSPI Flash，Emmc，等。

一个示例包含在Seeed_arduino_sfud中

用法

该代码已在WIO终端进行了测试。

Seeed_Arduino_FS.h>

#define LOG Serial
#define DEV SD

#ifdef _SAMD21_
#define SDCARD_SS_PIN 1
#define SDCARD_SPI SPI
#endif

void setup() {
LOG.begin(115200);
pinMode(5, OUTPUT);
digitalWrite(5, HIGH);
while (!LOG) {};
while (!DEV.begin(SDCARD_SS_PIN,SDCARD_SPI,4000000UL)) {
LOG.println("Card Mount Failed");
return;
}

LOG.println("initialization done.");

// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.

File RootWrite = DEV.open("/hello.txt", "w");
// File RootWrite = DEV.open("/hello.txt", FILE_WRITE);

// if the file opened okay, write to it:
if (RootWrite) {
LOG.print("Writing to hello.txt…");
RootWrite.println("hello 1, 2, 3.");
// close the file:
RootWrite.close();
LOG.println("done.");
} else {
// if the file didn\’t open, print an error:
LOG.println("error opening hello.txt");
}

// re-open the file for reading:
File RootRead= DEV.open("/hello.txt");
if (RootRead) {
LOG.println("hello.txt:");

// read from the file until there\’s nothing else in it:
while (RootRead.available()) {
LOG.write(RootRead.read());
}
// close the file:
RootRead.close();
} else {
// if the file didn\’t open, print an error:
LOG.println("error opening hello.txt");
}
}

void loop() {
// nothing happens after setup
}
\”>

# include < Seeed_Arduino_FS .h >

# define LOG Serial
# define DEV SD

# ifdef _SAMD21_
# define SDCARD_SS_PIN 1
# define SDCARD_SPI SPI
# endif 


void setup () {
    LOG. begin ( 115200 );
    pinMode ( 5 , OUTPUT);
    digitalWrite ( 5 , HIGH);
    while (!LOG) {};
    while (!DEV. begin (SDCARD_SS_PIN,SDCARD_SPI, 4000000UL )) {
        LOG. println ( \" Card Mount Failed \" );
        return ;
    }

    LOG. println ( \" initialization done. \" );

    // open the file. note that only one file can be open at a time,
    // so you have to close this one before opening another.

    File RootWrite = DEV. open ( \" /hello.txt \" , \" w \" );
    // File RootWrite = DEV.open(\"/hello.txt\", FILE_WRITE);

    // if the file opened okay, write to it:
    if (RootWrite) {
        LOG. print ( \" Writing to hello.txt... \" );
        RootWrite. println ( \" hello 1, 2, 3. \" );
        // close the file:
        RootWrite. close ();
        LOG. println ( \" done. \" );
    } else {
        // if the file didn\'t open, print an error:
        LOG. println ( \" error opening hello.txt \" );
    }
    
    // re-open the file for reading:
    File RootRead= DEV. open ( \" /hello.txt \" );
    if (RootRead) {
        LOG. println ( \" hello.txt: \" );

        // read from the file until there\'s nothing else in it:
        while (RootRead. available ()) {
            LOG. write (RootRead. read ());
        }
        // close the file:
        RootRead. close ();
    } else {
        // if the file didn\'t open, print an error:
        LOG. println ( \" error opening hello.txt \" );
    }
}

void loop () {
    // nothing happens after setup
}

API参考

• 布尔开始（UINT8_T SSPIN，SPICLASS＆SP，INT HZ）：配置SPI控制存储设备

DEV.begin(SDCARD_SS_PIN,SDCARD_SPI, 4000000UL )
// DEV.begin(104000000UL) //use qspi flash

• sdcard_type_t cardtype（）：获取SD卡类型

注意：仅使用SD卡

    uint8_t cardType = DEV.cardType();
    if (cardType == CARD_NONE) {
        SERIAL. println ( \" No SD card attached \" );
        return ;
    }

• sfud_type_t flashtype（）：获取flash类型

注意：仅与Flash一起工作

    uint8_t flashType = DEV.flashType();
    if (flashType == FLASH_NONE) {
        SERIAL. println ( \" No flash attached \" );
        return ;
    }

• uint64_t cardsize（）：获取SD卡大小

注意：仅使用SD卡

    uint64_t cardSize = DEV.cardSize() / ( 1024 * 1024 );
    SERIAL.print( \" SD Card Size: \" );
    SERIAL.print(( uint32_t )cardSize);
    SERIAL.println( \" MB \" );

• uint64_t flashsize（）：获取闪光灯大小

注意：仅与Flash一起工作

    uint32_t flashSize = DEV.flashSize() / ( 1024 * 1024 );
    SERIAL.print( \" flash Size: \" );
    SERIAL.print(( uint32_t )flashSize);
    SERIAL.println( \" MB \" );

• uint64_t totalbytes（）：返回存储设备的总字节

    uint32_t totalBytes = DEV.totalBytes();
    SERIAL.print( \" Total space: \" );
    SERIAL.print(totalBytes / ( 1024 * 1024 ));
    SERIAL.println( \" MB \" );

• uint64_t underbytes（）：返回存储设备的二手字节

    uint32_t usedBytes = DEV.usedBytes();
    SERIAL.print( \" Used space: \" );
    SERIAL.print(usedBytes / ( 1024 * 1024 ));
    SERIAL.println( \" MB \" );

该软件由Seeed Studio撰写
并获得MIT许可证的许可。检查许可证.txt以获取更多信息。

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