waveblender/settings.c

#include <string.h>
#include "settings.h"
#include "flash.h"


#define RAM_SETTINGS (0x20012000)
#define FLASH_SETTINGS (0x0E0000)
#define SETTINGS_PART_SIZE (0x20000) /* 128 KB */

struct settings *Settings = (struct settings *)(RAM_SETTINGS);



void settings_save(void)
{
    flash_unlock();
    flash_erase(FLASH_SETTINGS, SETTINGS_PART_SIZE);
    flash_write(FLASH_SETTINGS, (const void *)(RAM_SETTINGS), sizeof(struct settings));
    flash_lock();
}

static void restore_defaults(void)
{
    memset(Settings, 0, sizeof(struct settings));
    Settings->storage_hdr = STORAGE_HDR;
    Settings->bpm = 125;
    settings_save();
}


void settings_load(void)
{
    struct settings *s = (struct settings *)FLASH_SETTINGS;
    if (s->storage_hdr != STORAGE_HDR) {
        restore_defaults();
        return;
    } 
    memcpy((void *)RAM_SETTINGS, (const void *)FLASH_SETTINGS, sizeof(struct settings));
}