Your first steps with your uPesy MicroSD card reader

/*
uPesy SD card test

(Micro) SD card attached to SPI bus as follows:
** MOSI - pin 11 on Arduino Uno
** MISO - pin 12 on Arduino Uno
** CLK - pin 13 on Arduino Uno
** CS - pin 10 (can be changed)
** 5V - +5V of Arduino
*/

#include <SPI.h>
#include <SD.h>

Sd2Card card;
SdVolume volume;
SdFile root;

const int CS = 10;

void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
}

Serial.print("\nInitializing SD card...");

//we'll use the initialization code from the utility libraries
// since we're just testing if the card is working!
if (!card.init(SPI_HALF_SPEED, CS)) {
    Serial.println("initialization failed. Things to check:");
    Serial.println("* is a card inserted?");
    Serial.println("* is your wiring correct?");
    Serial.println("* did you change the CS pin to match your shield or module?");
    while (1);
} else {
    Serial.println("Wiring is correct and a card is present.");
}

// print the type of card
Serial.println();
Serial.print("Card type:         ");
switch (card.type()) {
    case SD_CARD_TYPE_SD1:
    Serial.println("SD1");
    break;
    case SD_CARD_TYPE_SD2:
    Serial.println("SD2");
    break;
    case SD_CARD_TYPE_SDHC:
    Serial.println("SDHC");
    break;
    default:
    Serial.println("Unknown");
}

// Now we will try to open the 'volume'/'partition' - it should be FAT16 or FAT32
if (!volume.init(card)) {
    Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
    while (1);
}

Serial.print("Clusters:          ");
Serial.println(volume.clusterCount());
Serial.print("Blocks x Cluster:  ");
Serial.println(volume.blocksPerCluster());

Serial.print("Total Blocks:      ");
Serial.println(volume.blocksPerCluster() * volume.clusterCount());
Serial.println();

// print the type and size of the first FAT-type volume
uint32_t volumesize;
Serial.print("Volume type is:    FAT");
Serial.println(volume.fatType(), DEC);

volumesize = volume.blocksPerCluster();    // clusters are collections of blocks
volumesize *= volume.clusterCount();       // we'll have a lot of clusters
volumesize /= 2;                           // SD card blocks are always 512 bytes (2 blocks are 1KB)
Serial.print("Volume size (Kb):  ");
Serial.println(volumesize);
Serial.print("Volume size (Mb):  ");
volumesize /= 1024;
Serial.println(volumesize);
Serial.print("Volume size (Gb):  ");
Serial.println((float)volumesize / 1024.0);

Serial.println("\nFiles found on the card (name, date and size in bytes): ");
root.openRoot(volume);

// list all files in the card with date and size
root.ls(LS_R | LS_DATE | LS_SIZE);
}

void loop(void) {
}

/*
uPesy SD card test

(Micro) SD card attached to SPI bus as follows:
** MOSI - pin 18 on ESP32
** MISO - pin 19 on ESP32
** CLK - pin 23 on ESP32
** CS - pin 5
** 5V - +5V of ESP32
*/

#include "FS.h"
#include "SD.h"
#include "SPI.h"

void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
    Serial.printf("Listing directory: %s\n", dirname);

    File root = fs.open(dirname);
    if(!root){
        Serial.println("Failed to open directory");
        return;
    }
    if(!root.isDirectory()){
        Serial.println("Not a directory");
        return;
    }

    File file = root.openNextFile();
    while(file){
        if(file.isDirectory()){
            Serial.print("  DIR : ");
            Serial.println(file.name());
            if(levels){
                listDir(fs, file.name(), levels -1);
            }
        } else {
            Serial.print("  FILE: ");
            Serial.print(file.name());
            Serial.print("  SIZE: ");
            Serial.println(file.size());
        }
        file = root.openNextFile();
    }
}

void createDir(fs::FS &fs, const char * path){
    Serial.printf("Creating Dir: %s\n", path);
    if(fs.mkdir(path)){
        Serial.println("Dir created");
    } else {
        Serial.println("mkdir failed");
    }
}

void removeDir(fs::FS &fs, const char * path){
    Serial.printf("Removing Dir: %s\n", path);
    if(fs.rmdir(path)){
        Serial.println("Dir removed");
    } else {
        Serial.println("rmdir failed");
    }
}

void readFile(fs::FS &fs, const char * path){
    Serial.printf("Reading file: %s\n", path);

    File file = fs.open(path);
    if(!file){
        Serial.println("Failed to open file for reading");
        return;
    }

    Serial.print("Read from file: ");
    while(file.available()){
        Serial.write(file.read());
    }
    file.close();
}

void writeFile(fs::FS &fs, const char * path, const char * message){
    Serial.printf("Writing file: %s\n", path);

    File file = fs.open(path, FILE_WRITE);
    if(!file){
        Serial.println("Failed to open file for writing");
        return;
    }
    if(file.print(message)){
        Serial.println("File written");
    } else {
        Serial.println("Write failed");
    }
    file.close();
}

void appendFile(fs::FS &fs, const char * path, const char * message){
    Serial.printf("Appending to file: %s\n", path);

    File file = fs.open(path, FILE_APPEND);
    if(!file){
        Serial.println("Failed to open file for appending");
        return;
    }
    if(file.print(message)){
        Serial.println("Message appended");
    } else {
        Serial.println("Append failed");
    }
    file.close();
}

void renameFile(fs::FS &fs, const char * path1, const char * path2){
    Serial.printf("Renaming file %s to %s\n", path1, path2);
    if (fs.rename(path1, path2)) {
        Serial.println("File renamed");
    } else {
        Serial.println("Rename failed");
    }
}

void deleteFile(fs::FS &fs, const char * path){
    Serial.printf("Deleting file: %s\n", path);
    if(fs.remove(path)){
        Serial.println("File deleted");
    } else {
        Serial.println("Delete failed");
    }
}

void testFileIO(fs::FS &fs, const char * path){
    File file = fs.open(path);
    static uint8_t buf[512];
    size_t len = 0;
    uint32_t start = millis();
    uint32_t end = start;
    if(file){
        len = file.size();
        size_t flen = len;
        start = millis();
        while(len){
            size_t toRead = len;
            if(toRead > 512){
                toRead = 512;
            }
            file.read(buf, toRead);
            len -= toRead;
        }
        end = millis() - start;
        Serial.printf("%u bytes read for %u ms\n", flen, end);
        file.close();
    } else {
        Serial.println("Failed to open file for reading");
    }


    file = fs.open(path, FILE_WRITE);
    if(!file){
        Serial.println("Failed to open file for writing");
        return;
    }

    size_t i;
    start = millis();
    for(i=0; i<2048; i++){
        file.write(buf, 512);
    }
    end = millis() - start;
    Serial.printf("%u bytes written for %u ms\n", 2048 * 512, end);
    file.close();
}

void setup(){
    Serial.begin(115200);
    if(!SD.begin()){
        Serial.println("Card Mount Failed");
        return;
    }
    uint8_t cardType = SD.cardType();

    if(cardType == CARD_NONE){
        Serial.println("No SD card attached");
        return;
    }

    Serial.print("SD Card Type: ");
    if(cardType == CARD_MMC){
        Serial.println("MMC");
    } else if(cardType == CARD_SD){
        Serial.println("SDSC");
    } else if(cardType == CARD_SDHC){
        Serial.println("SDHC");
    } else {
        Serial.println("UNKNOWN");
    }

    uint64_t cardSize = SD.cardSize() / (1024 * 1024);
    Serial.printf("SD Card Size: %lluMB\n", cardSize);

    listDir(SD, "/", 0);
    createDir(SD, "/mydir");
    listDir(SD, "/", 0);
    removeDir(SD, "/mydir");
    listDir(SD, "/", 2);
    writeFile(SD, "/hello.txt", "Hello ");
    appendFile(SD, "/hello.txt", "World!\n");
    readFile(SD, "/hello.txt");
    deleteFile(SD, "/foo.txt");
    renameFile(SD, "/hello.txt", "/foo.txt");
    readFile(SD, "/foo.txt");
    testFileIO(SD, "/test.txt");
    Serial.printf("Total space: %lluMB\n", SD.totalBytes() / (1024 * 1024));
    Serial.printf("Used space: %lluMB\n", SD.usedBytes() / (1024 * 1024));
}

void loop(){

}

/*
    uPesy SD card test

    (Micro) SD card attached to SPI bus as follows:
    ** MOSI - pin 19 on Pi Pico
    ** MISO - pin 16 on Pi Pico
    ** CLK - pin 18 on Pi Pico
    ** CS - pin 17 on Pi Pico
    ** 5V - +5V of Pi Pico
*/

#include <SPI.h>
#include <SD.h>

File root;

void setup() {
    delay(5000);
    // Open serial communications and wait for port to open:
    Serial.begin(115200);

    Serial.print("Initializing SD card...");

    if (!SD.begin(SS)) {
        Serial.println("initialization failed!");
        return;
    }
    Serial.println("initialization done.");

    root = SD.open("/");

    printDirectory(root, 0);

    Serial.println("done!");
}

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

void printDirectory(File dir, int numTabs) {
while (true) {

    File entry =  dir.openNextFile();
    if (! entry) {
    // no more files
    break;
    }
    for (uint8_t i = 0; i < numTabs; i++) {
    Serial.print('\t');
    }
    Serial.print(entry.name());
    if (entry.isDirectory()) {
    Serial.println("/");
    printDirectory(entry, numTabs + 1);
    } else {
    // files have sizes, directories do not
    Serial.print("\t\t");
    Serial.print(entry.size(), DEC);
    time_t cr = entry.getCreationTime();
    time_t lw = entry.getLastWrite();
    struct tm * tmstruct = localtime(&cr);
    Serial.printf("\tCREATION: %d-%02d-%02d %02d:%02d:%02d", (tmstruct->tm_year) + 1900, (tmstruct->tm_mon) + 1, tmstruct->tm_mday, tmstruct->tm_hour, tmstruct->tm_min, tmstruct->tm_sec);
    tmstruct = localtime(&lw);
    Serial.printf("\tLAST WRITE: %d-%02d-%02d %02d:%02d:%02d\n", (tmstruct->tm_year) + 1900, (tmstruct->tm_mon) + 1, tmstruct->tm_mday, tmstruct->tm_hour, tmstruct->tm_min, tmstruct->tm_sec);
    }
    entry.close();
}
}