GC19038/HARDWARE/hw_flash_data.c

#include "board.h"
#include "global.h"
/**
 * 读取硬件参数保存部分,要求数据指针地址是4字节对齐
 * 
 * @author lxz (2019/5/30/周四)
 * 
 * @param data 
 * 
 * @return int 
 */
int hw_flash_data_read(uint32_t pos, void * data,uint32_t length)
{
    st_flash_read(pos,(uint32_t *)data,length / 4);
    //hw_24cxx_read(pos,data,length);
    return length;
}

/**
 * 写入硬件参数部分,要求数据指针地址是4字节对齐
 * 
 * @author lxz (2019/5/30/周四)
 * 
 * @param data 
 * 
 * @return int 
 */
int hw_flash_data_write(uint32_t pos, void * data,uint32_t length)
{
    //开始编写参数
    st_flash_write(pos, (uint32_t *)data, length / 4);
    //hw_24cxx_write(pos,data,length);
    return length;
}

/**
 * 
 * 
 * @author lxz 
 * 
 * @param pos 
 */
void hw_flash_data_erase(uint32_t pos)
{
    st_flash_unlock();
    st_flash_erase_secotr(st_flash_addr_to_sector_no(pos));
    st_flash_lock();
}

/**
 * 检查指定的空间是否能写入
 * 
 * @author lxz (2019/5/31/周五)
 * 
 * @param pos 必须保证32字节对齐的地址
 * @param length 
 * 
 * @return int 
 */
int hw_flash_data_check_empty(uint32_t pos,uint32_t length)
{

    length = (length + 3) / 4;
    while (length > 0)
    {
        if (st_flash_read_word(pos) != 0xFFFFFFFF)
        {
            break;
        }
        length--;
        pos+= 4;
    }
    return length;
}


void ManualSaveData(void)
{
    hw_flash_data_erase(MANUAL_SAVE_ADDRESS);
    hw_flash_data_write(MANUAL_SAVE_ADDRESS,&user_datas[POWEROFF_SAVE_BLOCK_SIZE / 2],MANUAL_SAVE_BLOCK_SIZE);
}

void ManualReadData(void)
{
    hw_flash_data_read(MANUAL_SAVE_ADDRESS, &user_datas[POWEROFF_SAVE_BLOCK_SIZE / 2],MANUAL_SAVE_BLOCK_SIZE);
}