microsd  2.1.0.0
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microSD click

Need more additional memory? We've got just the thing for you - microSD click. It features a microSD card slot for microSD cards used as a mass storage media for portable devices. microSD click is designed to run on 3.3V power supply. Industry standard SPI interface ensures simple communication at high data rates. Use it for reading or storing data like music, text files, videos and more.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Aug 2023.
  • Type : SPI type

Software Support

We provide a library for the microSD Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for microSD Click driver.

Standard key functions :

Example key functions :

  • microsd_check_card_detection This function checks and waits for a microSD card to be inserted to the click board.
  • microsd_create_directory This function creates a new directory at the selected absolute path. The path should contain a name of the directory to be created.
    void microsd_create_directory ( uint8_t *dir_path );
  • microsd_display_directory This function reads and displays the content of the directory at the selected path.
    void microsd_display_directory ( uint8_t *dir_path );

Example Description

This example demonstrates a basic file system functionality and operations with files and directories using a microSD click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger and performs a several operations with file system that demonstrates the basic usage of microSD click board.

void application_init ( void )
{
log_cfg_t log_cfg;
microsd_cfg_t microsd_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
microsd_cfg_setup( &microsd_cfg );
MICROSD_MAP_MIKROBUS( microsd_cfg, MIKROBUS_1 );
if ( MICROSD_ERROR == microsd_init( &microsd, &microsd_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
Delay_ms ( 1000 );
// Mount the initialized logical drive to the initialized physical drive and overall file system
#if FORMAT_CARD
// Format the logical drive previously mounted to file system with identifying ROOT drive number
#endif
Delay_ms ( 1000 );
Delay_ms ( 1000 );
// Create DIR1 directory
Delay_ms ( 500 );
// Create DIR2 directory
Delay_ms ( 500 );
// Create DIR4 directory
Delay_ms ( 500 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
// Remove DIR4 directory
Delay_ms ( 500 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
// Rename DIR2 to DIR3
Delay_ms ( 500 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
// Create the FILE1
Delay_ms ( 500 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
uint8_t rw_buffer[ BUFFER_SIZE ] = { 0 };
// Populate write buffer with bytes ranging from 0 to 255
for ( uint16_t cnt = 0; cnt < BUFFER_SIZE; cnt++ )
{
rw_buffer[ cnt ] = cnt & 0xFF;
}
Delay_ms ( 500 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
// Create the FILE2
Delay_ms ( 500 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
// Copy data from FILE1 to FILE2
Delay_ms ( 500 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
// Create DIR5 directory
Delay_ms ( 500 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
log_info( &logger, " Application Task " );
}

Application Task

Reads and displays on the USB UART the contents of all directories created during application init.

void application_task ( void )
{
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
log_printf ( &logger, "\r\n\n" );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.microSD

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.


microsd_init
err_t microsd_init(microsd_t *ctx, microsd_cfg_t *cfg)
microSD initialization function.
microsd_display_directory
void microsd_display_directory(uint8_t *dir_path)
microSD display directory function.
Definition: main.c:340
PATH_DIR5
#define PATH_DIR5
Definition: main.c:40
PATH_FILE1
#define PATH_FILE1
Definition: main.c:41
MICROSD_MAP_MIKROBUS
#define MICROSD_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: microsd.h:96
PATH_FILE2
#define PATH_FILE2
Definition: main.c:42
microsd_remove_path
void microsd_remove_path(uint8_t *path)
microSD remove path function.
Definition: main.c:390
PATH_ROOT
#define PATH_ROOT
Definition: main.c:35
microsd_t
microSD Click context object.
Definition: microsd.h:111
application_task
void application_task(void)
Definition: main.c:289
MICROSD_ERROR
@ MICROSD_ERROR
Definition: microsd.h:143
microsd_mount_drive
void microsd_mount_drive(microsd_t *ctx, uint8_t *path)
microSD mount drive function.
Definition: main.c:499
microsd_write_to_file
void microsd_write_to_file(uint8_t *file_path, uint8_t *data_in, uint32_t data_len)
microSD write to file function.
Definition: main.c:425
microsd_check_card_detection
void microsd_check_card_detection(microsd_t *ctx)
microSD check card detection function.
Definition: main.c:326
microsd_format_drive
void microsd_format_drive(uint8_t *path)
microSD format drive function.
Definition: main.c:490
PATH_DIR2
#define PATH_DIR2
Definition: main.c:37
PATH_DIR1
#define PATH_DIR1
Definition: main.c:36
BUFFER_SIZE
#define BUFFER_SIZE
Definition: main.c:45
microsd_rename_path
void microsd_rename_path(uint8_t *old_path, uint8_t *new_path)
microSD rename path function.
Definition: main.c:399
microsd_copy_file
void microsd_copy_file(uint8_t *src_file_path, uint8_t *dst_file_path)
microSD copy file function.
Definition: main.c:451
PATH_DIR4
#define PATH_DIR4
Definition: main.c:39
microsd_create_directory
void microsd_create_directory(uint8_t *dir_path)
microSD create directory function.
Definition: main.c:381
microsd_create_file
void microsd_create_file(uint8_t *file_path)
microSD create file function.
Definition: main.c:408
application_init
void application_init(void)
Definition: main.c:164
microsd_cfg_t
microSD Click configuration object.
Definition: microsd.h:125
microsd_cfg_setup
void microsd_cfg_setup(microsd_cfg_t *cfg)
microSD configuration object setup function.
PATH_DIR3
#define PATH_DIR3
Definition: main.c:38