reram

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ReRAM Click

ReRAM Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : Nemanja Medakovic
• Date : Oct 2019.
• Type : SPI type

Software Support

Example Description

This example demonstrates the use of the ReRAM Click board.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Reram

Example Key Functions

• reram_cfg_setup Configuration Object Setup function.

void reram_cfg_setup ( reram_cfg_t *cfg );

• reram_init Click Initialization function.

reram_err_t reram_init ( reram_t *ctx, reram_cfg_t *cfg );

• reram_default_cfg Click Default Configuration function.

void reram_default_cfg ( reram_t *ctx );

• reram_send_cmd Command Send function.

reram_err_t reram_send_cmd ( reram_t *ctx, reram_spi_data_t cmd_code );

• reram_read_status Status Read function.

reram_spi_data_t reram_read_status ( reram_t *ctx );

• reram_write_memory Memory Write function.

reram_err_t reram_write_memory ( reram_t *ctx, uint32_t mem_addr, reram_spi_data_t *data_in, uint16_t n_bytes );

Application Init

Initializes SPI serial interface and puts a device to the initial state. Data from 0 to 255 will be written in memory block from address 0x0 to address 0xFF.

void application_init( void )
{
    reram_cfg_t reram_cfg;
    log_cfg_t logger_cfg;

    //  Click object initialization.
    reram_cfg_setup( &reram_cfg );
    RERAM_MAP_MIKROBUS( reram_cfg, MIKROBUS_POSITION_RERAM );
    reram_init( &reram, &reram_cfg );

    //  Click start configuration.
    reram_default_cfg( &reram );

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( logger_cfg );
    log_init( &logger, &logger_cfg );
    
    reram_wake_up( &reram );
    
    uint32_t id_data = reram_read_id( &reram );
    
    if ( RERAM_ID_DATA != id_data )
    {
        log_printf( &logger, "***  ReRAM Error ID  ***\r\n" );
        for( ; ; );
    }
    else
    {    
        log_printf( &logger, "***  ReRAM Initialization Done  ***\r\n" );
        log_printf( &logger, "***********************************\r\n" );
    }


    reram_send_cmd( &reram, RERAM_CMD_WREN );
    Delay_ms ( 1000 );
}

Application Task

Reads same memory block starting from address 0x0 to address 0xFF and sends memory content to USB UART, to verify memory write operation.

void application_task( void )
{
    reram_spi_data_t data_out;
    static uint16_t mem_addr = RERAM_MEM_ADDR_START;

    reram_read_memory( &reram, mem_addr, &data_out, 1 );

    log_printf( &logger, "* Memory Address [0x%X] : %u", mem_addr, data_out );
    log_write( &logger, "", LOG_FORMAT_LINE );

    if (mem_addr < 0xFF)
    {
        mem_addr++;
    }
    else
    {
        mem_addr = RERAM_MEM_ADDR_START;
    }

    Delay_ms ( 500 );
}

Note

Write Enable Latch is reset after the following operations:

• After 'Write Disable'command recognition.
• The end of writing process after 'Write Status' command recognition.
• The end of writing process after 'Write Memory' command recognition.

Data will not be written in the protected blocks of the ReRAM array.

• Upper 1/4 goes from address 0x60000 to 0x7FFFF.
• Upper 1/2 goes from address 0x40000 to 0x7FFFF.
• The entire ReRAM array goes from address 0x00000 to 0x7FFFF.

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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