使用CY14B101PA和STM32L073RZ随时随地保护关键信息

/*!
 * @file main.c
 * @brief nvSRAM4 Click example
 *
 * # Description
 * This is an example that demonstrates the use of the nvSRAM 4 Click board.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initialization driver enables - SPI, 
 * write demo_data string ( mikroE ), starting from the selected memory_addr ( 112233 ), 
 * set the time to 12:30:31 and set the date to 31-12-20.
 *
 * ## Application Task
 * In this example, we read a data string, which we have previously written to memory, 
 * starting from the selected memory_addr ( 112233 ) 
 * and read and display the current time and date, which we also previously set.
 * Results are being sent to the Usart Terminal where you can track their changes.
 * All data logs write on USB uart changes for every 1 sec.
 *
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "nvsram4.h"

static nvsram4_t nvsram4;
static log_t logger;

static char demo_data[ 9 ] = { 'm', 'i', 'k', 'r', 'o', 'E', 13 ,10 , 0 };
static char rx_data[ 9 ];
static uint32_t memory_addr;
static uint8_t new_sec = 255;
static uint8_t c_year = 20;

static nvsram4_rtc_time_t time;
static nvsram4_rtc_date_t date;

void application_init ( void ) {
    log_cfg_t log_cfg;          /**< Logger config object. */
    nvsram4_cfg_t nvsram4_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_printf( &logger, "\r\n" );
    log_info( &logger, " Application Init " );

    // Click initialization.

    nvsram4_cfg_setup( &nvsram4_cfg );
    NVSRAM4_MAP_MIKROBUS( nvsram4_cfg, MIKROBUS_1 );
    err_t init_flag  = nvsram4_init( &nvsram4, &nvsram4_cfg );
    if ( init_flag == SPI_MASTER_ERROR ) {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    nvsram4_default_cfg ( &nvsram4 );
    Delay_ms ( 100 );
    log_info( &logger, " Application Task " );
    
    log_printf( &logger, "-----------------------\r\n" );
    log_printf( &logger, "     nvSRAM 4 Click    \r\n" );
    log_printf( &logger, "-----------------------\r\n" );
    
    memory_addr = 112233;
    
    nvsram4_set_cmd( &nvsram4, NVSRAM4_STATUS_WREN );
    Delay_ms ( 100 );
    
    log_printf( &logger, "  Write data : %s", demo_data );
    nvsram4_burst_write_memory( &nvsram4, memory_addr, &demo_data[ 0 ], 9 );
    log_printf( &logger, "-----------------------\r\n" );
    Delay_ms ( 1000 );
    
    date.day_of_week = 4;
    date.day = 31;
    date.month = 12;
    date.year = 20;
    nvsram4_set_rtc_date( &nvsram4, date );
    Delay_ms ( 100 );
    
    time.hours = 23;
    time.min = 59;
    time.sec = 50;
    nvsram4_set_rtc_time( &nvsram4, time );
    Delay_ms ( 100 );
}

void application_task ( void ) {
    nvsram4_get_rtc_time( &nvsram4, &time );
    Delay_ms ( 1 );
    nvsram4_get_rtc_date( &nvsram4, &date );
    Delay_ms ( 1 );
    
    if ( time.sec != new_sec ) {
        log_printf( &logger, "  Date      : %.2d-%.2d-%.2d\r\n", ( uint16_t ) date.day, ( uint16_t ) date.month, ( uint16_t ) date.year );
        log_printf( &logger, "  Time      : %.2d:%.2d:%.2d\r\n", ( uint16_t ) time.hours, ( uint16_t ) time.min, ( uint16_t ) time.sec );
        log_printf( &logger, "- - - - - - - - - - - -\r\n" );
        new_sec = time.sec;
        Delay_ms ( 10 );
        
        if ( date.year != c_year ) {
            log_printf( &logger, "     Happy New Year    \r\n" );
            c_year = date.year;
            Delay_ms ( 10 );
        } else {
            nvsram4_burst_read_memory( &nvsram4, memory_addr, &rx_data[ 0 ], 9 );
            log_printf( &logger, "  Read data : %s", rx_data );    
        }
               
        log_printf( &logger, "-----------------------\r\n" );
    } else {
        Delay_ms ( 1 );    
    }
}

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;
}

// ------------------------------------------------------------------------ END