flash4  2.0.0.0
Main Page

Flash 4 click

Flash 4 click is a perfect solution for the mass storage option in various embedded applications. With fast performance being one of its key features, Flash 4 click can also be used for the code shadowing, execute-in-place (XIP), and data storage.

click Product page


Click library

  • Author : MikroE Team
  • Date : dec 2019.
  • Type : SPI type

Software Support

We provide a library for the Flash4 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Flash4 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void flash4_cfg_setup ( flash4_cfg_t *cfg );

  • Initialization function.

    FLASH4_RETVAL flash4_init ( flash4_t *ctx, flash4_cfg_t *cfg );

  • Generic transfer function.

    void flash4_generic_transfer ( flash4_t *ctx, uint8_t *wr_buf, uint16_t wr_len, uint8_t *rd_buf, uint16_t rd_len );

Example key functions :

  • Function for read Manufacturer ID.

    void flash4_read_manufacturer_id ( flash4_t *ctx, uint8_t *device_id );

  • Write command function.

    void flash4_write_command ( flash4_t *ctx, uint8_t cmd );

  • Read Flash with 4 byte address function.

    void flash4_read_flash_4 ( flash4_t *ctx, uint8_t *out_data, uint32_t addr, uint8_t n_data );

Examples Description

This example demonstrates the use of Flash 4 Click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and enables the click board, then checks the communication by reading the device and manufacturer IDs.

void application_init ( void )
{
log_cfg_t log_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
FLASH4_MAP_MIKROBUS( cfg, MIKROBUS_1 );
flash4_init( &flash4, &cfg );
flash4_reset( &flash4 );
Delay_ms ( 1000 );
flash4_read_manufacturer_id( &flash4, device_id );
if ( device_id[ 0 ] != FLASH4_MANUFACTURER_ID || device_id[ 1 ] != FLASH4_DEVICE_ID )
{
log_error( &logger, "WRONG ID READ" );
log_printf( &logger, "Please restart your system.\r\n" );
for( ; ; );
}
Delay_ms ( 1000 );
}

Application Task

Erases sector memory starting from 0x00001234 address, then writes a desired message to the same address. After that, verifies if the message is written correctly by reading it back and displaying it to the USB UART every 5 seconds.

void application_task ( void )
{
char read_buffer[ 10 ] = { 0 };
log_printf( &logger, "--- Erase chip --START-- \r\n" );
flash4_sector_erase_4( &flash4, 0x00001234 );
while ( flash4_check_wip( &flash4 ) );
log_printf( &logger, "--- Erase chip --DONE-- \r\n" );
flash4_page_program_4( &flash4, DEMO_MESSAGE, 0x00001234, strlen( DEMO_MESSAGE ) );
while ( flash4_check_wip( &flash4 ) );
Delay_100ms( );
flash4_read_flash_4( &flash4, read_buffer, 0x00001234, strlen( DEMO_MESSAGE ) );
while ( flash4_check_wip( &flash4 ) );
log_printf( &logger, "--- Read buffer : %s\r\n", read_buffer );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Flash4

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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.


flash4_read_manufacturer_id
void flash4_read_manufacturer_id(flash4_t *ctx, uint8_t *device_id)
Read Manufacturer ID function.
flash4_reset
void flash4_reset(flash4_t *ctx)
Function for reset.
flash4_cfg_setup
void flash4_cfg_setup(flash4_cfg_t *cfg)
Config Object Initialization function.
flash4_page_program_4
void flash4_page_program_4(flash4_t *ctx, uint8_t *in_data, uint32_t addr, uint8_t n_data)
Write data to address with 4 byte address function.
flash4_check_wip
uint8_t flash4_check_wip(flash4_t *ctx)
Function for wip.
FLASH4_CMD_WRITE_ENABLE_WREN
#define FLASH4_CMD_WRITE_ENABLE_WREN
Definition: flash4.h:108
application_task
void application_task(void)
Definition: main.c:77
flash4_init
FLASH4_RETVAL flash4_init(flash4_t *ctx, flash4_cfg_t *cfg)
Initialization function. *.
FLASH4_MAP_MIKROBUS
#define FLASH4_MAP_MIKROBUS(cfg, mikrobus)
Definition: flash4.h:67
flash4_read_flash_4
void flash4_read_flash_4(flash4_t *ctx, uint8_t *out_data, uint32_t addr, uint8_t n_data)
Read Flash with 4 byte address function.
flash4_cfg_t
Click configuration structure definition.
Definition: flash4.h:176
flash4_sector_erase_4
void flash4_sector_erase_4(flash4_t *ctx, uint32_t addr)
Sector Erase for 4 bytes address function.
DEMO_MESSAGE
#define DEMO_MESSAGE
Definition: main.c:30
FLASH4_DEVICE_ID
#define FLASH4_DEVICE_ID
Definition: flash4.h:91
FLASH4_MANUFACTURER_ID
#define FLASH4_MANUFACTURER_ID
Definition: flash4.h:90
application_init
void application_init(void)
Definition: main.c:38
flash4_write_command
void flash4_write_command(flash4_t *ctx, uint8_t cmd)
Write command function.