eeram

\mainpage Main Page

---

EERAM click

EERAM click is a static RAM (SRAM) memory click board™ with the unique feature - it has a backup non-volatile memory array, used to store the data from the SRAM array. Since the SRAM is not able to maintain its content after the power loss, the non-volatile EEPROM backup can be a very handy addition that can be used to preserve the data, even after the power loss event. This is a very useful feature when working with critical or sensitive applications.

click Product page

click Product page

Click library

• Author : MikroE Team
• Date : maj 2020.
• Type : I2C type

Software Support

We provide a library for the Eeram 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 Eeram Click driver.

Standard key functions :

• Config Object Initialization function.

void eeram_cfg_setup ( eeram_cfg_t *cfg );

• Initialization function.

EERAM_RETVAL eeram_init ( eeram_t *ctx, eeram_cfg_t *cfg );

Example key functions :

• Reads the data from the selected SRAM address onwards.

void eeram_read ( eeram_t *ctx, uint16_t address, uint8_t *data_out, uint8_t count_out );

• Writes the data to SRAM memory array.

void eeram_write ( eeram_t *ctx, uint16_t address, uint8_t * data_in, uint8_t count_in );

• Returns the state of the status register.

uint8_t eeram_status_read ( eeram_t *ctx );

Examples Description

This example show using EERAM click to store the data to the SRAM ( static RAM ) memory. The data is read and written by the I2C serial communication bus, and the memory cells are organized into 2048 bytes, each 8bit wide.

The demo application is composed of two sections :

Application Init

EERAM driver nitialization

void application_init ( void )
{
    log_cfg_t log_cfg;
    eeram_cfg_t cfg;

    //  Logger initialization.

    log_cfg.level = LOG_LEVEL_DEBUG;
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    eeram_cfg_setup( &cfg );
    EERAM_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    eeram_init( &eeram, &cfg );
}
  

Application Task

Writing data to click memory and displaying the read data via UART.

void application_task ( void )
{
    log_info( &logger, "Writing MikroE to  SRAM memory, from address 0x0150:" );
    eeram_write( &eeram, 0x0150, &wr_data, 9 );
    log_info( &logger, "Reading 9 bytes of SRAM memory, from address 0x0150:" );
    eeram_read( &eeram, 0x0150, &rd_data, 9 );
    log_info( &logger, "Data read: %s", rd_data );
    Delay_ms( 1000 );
} 

Note

Input Voltage:	
      5V ( on EERAM 5V Click)
      3.3V ( on EERAM 3.3V Click)

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.Eeram

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.

---