Immediately seize and safeguard essential data in the event of a power disruption with CY15B116QSN and STM32L496AG

/*!
 * @file main.c
 * @brief ExcelonUltra Click example
 *
 * # Description
 * This example is showcase of device and it's library abillity.
 * In this example is shown device ID, ability to manipulate with memory.
 * After default configuration device IDs are logged. After that application
 * Writes data to memory, reads data from memory, clears data from memory and
 * checks if data is cleard by reading that same memory address.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes MCU modules for communication used in this application (UART, SPI).
 * Calls default configuration that resets device, reads IDs, and enables writing to
 * memory and sets all RAM memory to be free for conrol.
 * 
 * ## Application Task
 * Write data to memory, read data from memory. After that clears that memory address,
 * and checks if it's cleared by reading data. On every iteration of the fucntion 
 * writing data is changed between "MikroE" and "Excelon-Ultra Click"
 *
 * @author Luka Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "excelonultra.h"

#define MIKROE_DATA "MikroE"
#define CLICK_DATA "Excelon-Ultra Click"

static excelonultra_t excelonultra;
static log_t logger;

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    excelonultra_cfg_t excelonultra_cfg;  /**< Click config object. */

    /** 
     * 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( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    excelonultra_cfg_setup( &excelonultra_cfg );
    EXCELONULTRA_MAP_MIKROBUS( excelonultra_cfg, MIKROBUS_1 );
    err_t init_flag  = excelonultra_init( &excelonultra, &excelonultra_cfg );
    if ( init_flag == SPI_MASTER_ERROR ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    excelonultra_default_cfg ( &excelonultra );
    
    log_printf( &logger, " > Manufacturer ID: 0x%.4X\r\n", excelonultra.manufacturer_id );
    log_printf( &logger, " > Product ID: 0x%.4X\r\n", excelonultra.product_id );
    log_printf( &logger, " > Density ID: 0x%.2X\r\n", excelonultra.density_id );
    log_printf( &logger, " > Die Rev: 0x%.2X\r\n", excelonultra.die_rev );
    
    log_printf( &logger, " > Unique ID: 0x%.2X" , excelonultra.unique_id[ 7 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 6 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 5 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 4 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 3 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 2 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 1 ] );
    log_printf( &logger, "%.2X\r\n" , excelonultra.unique_id[ 0 ] );
    
    Delay_ms ( 1000 );
    log_info( &logger, " Application Task " );
}

void application_task ( void ) 
{
    static uint32_t memory_address = 0x00000055;
    static uint8_t data_selection = 1;
    static uint8_t write_len;
    char to_write[ 50 ] = { 0 };
    char read_from[ 50 ] = { 0 };
    
    if (data_selection)
    {
        strcpy( to_write, MIKROE_DATA );
        data_selection = !data_selection;
    }
    else
    {
        strcpy( to_write, CLICK_DATA );
        data_selection = !data_selection;
    }
    write_len = strlen( to_write );
    
    log_printf( &logger, " > Writing data to memory: %s\r\n", to_write );
    excelonultra_write_data_to_memory( &excelonultra, memory_address, to_write, write_len );
    
    Delay_ms ( 500 );
    
    excelonultra_read_data_from_memory( &excelonultra, memory_address, read_from, write_len );
    log_printf( &logger, " > Read data from memory: %s\r\n", read_from );

    Delay_ms ( 500 );

    log_printf( &logger, " > Clearing data from memory\r\n" );
    excelonultra_clear_data_from_memory( &excelonultra, memory_address, write_len );
    
    Delay_ms ( 500 );
    
    excelonultra_read_data_from_memory( &excelonultra, memory_address, read_from, write_len );
    log_printf( &logger, " > Read data from memory: %s\r\n", read_from );

    log_printf( &logger, "***********************************\r\n" );
    Delay_ms ( 500 );
}

int main ( void ) 
{
    /* Do not remove this line or clock might not be set correctly. */
    #ifdef PREINIT_SUPPORTED
    preinit();
    #endif
    
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}

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