eeprom9  2.1.0.0
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EEPROM 9 click

EEPROM 9 Click is a compact add-on board with a highly reliable nonvolatile memory solution. This board features the M95P32-I, the 32Mbit electrically erasable programmable memory with enhanced hardware write protection from STMicroelectronics.

click Product page


Click library

  • Author : Stefan Ilic
  • Date : Mar 2023.
  • Type : SPI type

Software Support

We provide a library for the EEPROM 9 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 EEPROM 9 Click driver.

Standard key functions :

Example key functions :

Example Description

This is an example that demonstrates the use of the EEPROM 9 Click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and USB UART logging, disables hold and write protection.

void application_init ( void )
{
log_cfg_t log_cfg;
eeprom9_cfg_t eeprom9_cfg;
id_data_t id_data;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
eeprom9_cfg_setup( &eeprom9_cfg );
EEPROM9_MAP_MIKROBUS( eeprom9_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == eeprom9_init( &eeprom9, &eeprom9_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
eeprom9_read_identification( &eeprom9, &id_data );
{
log_error( &logger, " Communication error." );
for ( ; ; );
}
log_printf( &logger, " Manufacturer code: 0x%.2X \r\n", ( uint16_t ) id_data.manufact_code );
log_printf( &logger, " Disabling Hold \r\n" );
Delay_ms( 100 );
log_printf( &logger, " Disabling Write Protection \r\n" );
Delay_ms( 100 );
log_info( &logger, " Application Task " );
log_printf( &logger, " - - - - - - - - - - - \r\n" );
}

Application Task

Writes a desired number of data bytes to the EEPROM 9 memory into a specified address,

and verifies that it is written correctly by reading from the same memory location.

void application_task ( void )
{
char rx_data[ 9 ] = { 0 };
Delay_ms( 10 );
eeprom9_write_memory( &eeprom9, MEMORY_ADDRESS, demo_data, 9 );
log_printf( &logger, " Write data: %s", demo_data );
Delay_ms( 100 );
eeprom9_read_memory( &eeprom9, MEMORY_ADDRESS, rx_data, 9 );
log_printf( &logger, " Read data: %s", rx_data );
log_printf( &logger, " - - - - - - - - - - - \r\n" );
Delay_ms( 1000 );
}

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.EEPROM9

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.


EEPROM9_WRITE_PROTECT_DISABLE
#define EEPROM9_WRITE_PROTECT_DISABLE
Definition: eeprom9.h:62
eeprom9_block_erase
err_t eeprom9_block_erase(eeprom9_t *ctx, uint32_t block_addr)
EEPROM 9 memory block erase function.
id_data_t::manufact_code
uint8_t manufact_code
Definition: eeprom9.h:208
EEPROM9_MAP_MIKROBUS
#define EEPROM9_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: eeprom9.h:151
eeprom9_cfg_setup
void eeprom9_cfg_setup(eeprom9_cfg_t *cfg)
EEPROM 9 configuration object setup function.
MEMORY_ADDRESS
#define MEMORY_ADDRESS
Definition: main.c:29
application_task
void application_task(void)
Definition: main.c:79
eeprom9_read_memory
err_t eeprom9_read_memory(eeprom9_t *ctx, uint32_t mem_addr, uint8_t *data_out, uint8_t len)
EEPROM 9 memory reading function.
EEPROM9_WRITE_ENABLE
#define EEPROM9_WRITE_ENABLE
Definition: eeprom9.h:64
eeprom9_cfg_t
EEPROM 9 Click configuration object.
Definition: eeprom9.h:184
id_data_t
EEPROM 9 Click identification data.
Definition: eeprom9.h:207
eeprom9_write_memory
err_t eeprom9_write_memory(eeprom9_t *ctx, uint32_t mem_addr, uint8_t *data_in, uint8_t len)
EEPROM 9 memory writing function.
EEPROM9_ST_MANUFACTURER_CODE
#define EEPROM9_ST_MANUFACTURER_CODE
EEPROM 9 Manufacturer code.
Definition: eeprom9.h:83
eeprom9_set_hold
void eeprom9_set_hold(eeprom9_t *ctx, uint8_t en_hold)
EEPROM 9 set hold pin state function.
eeprom9_init
err_t eeprom9_init(eeprom9_t *ctx, eeprom9_cfg_t *cfg)
EEPROM 9 initialization function.
application_init
void application_init(void)
Definition: main.c:31
EEPROM9_HOLD_DISABLE
#define EEPROM9_HOLD_DISABLE
EEPROM 9 description setting.
Definition: eeprom9.h:60
eeprom9_t
EEPROM 9 Click context object.
Definition: eeprom9.h:167
eeprom9_set_write_enable
err_t eeprom9_set_write_enable(eeprom9_t *ctx, uint8_t en_write)
EEPROM 9 enable write function.
eeprom9_read_identification
err_t eeprom9_read_identification(eeprom9_t *ctx, id_data_t *id_data)
EEPROM 9 read identification function.
eeprom9_set_write_protection
void eeprom9_set_write_protection(eeprom9_t *ctx, uint8_t en_wp)
EEPROM 9 set write protection state function.