#include "mbed.h"

#include "SDBlockDevice.h"
#include "FATFileSystem.h"


// SDBlockDevice(PinName mosi, PinName miso, PinName sclk, PinName csel, int freq
SDBlockDevice sd;       // pins defined in mbed_app.json
FATFileSystem fs("fs");

DigitalOut led(LED1);

void printDirectory(FileSystem *fs, const char* dirname) {
    Dir dir;
    struct dirent ent;

    dir.open(fs, dirname);
    printf("contents of dir: %s\n", dirname);
    printf("----------------------------------------------------\n");

    while (1) {
        size_t res = dir.read(&ent);
        if (0 == res) {
            break;
        }
        printf(ent.d_name);
        printf("\n");
    }
    dir.close();
}

int main()
{
    printf("Hello from "  MBED_STRINGIFY(TARGET_NAME) "\n");
    printf("Mbed OS version: %d.%d.%d\n\n", MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION);

    volatile int err = 0;

    err = sd.init();
    printf("sd init result: %d\n", err);

    if (err != 0) {
        while (1)
        {
            led = !led;
            ThisThread::sleep_for(100ms);
        }
    }

    printf("spif size: %llu\n",         sd.size());
    printf("spif read size: %llu\n",    sd.get_read_size());
    printf("spif program size: %llu\n", sd.get_program_size());
    printf("spif erase size: %llu\n",   sd.get_erase_size());

    err = fs.mount(&sd);
    debug_if(err != 0, "mount error: %d\n", err);

    printf("\n\n");
    printDirectory(&fs, "/");

    while (1)
    {
        led = !led;
        ThisThread::sleep_for(1s);
    }
}