#include?
#include?

#include?“hardware.h“
#include?“usart.h“

#define?STM32_CPUID????????????????????（（uint32_t）0x1FFFF7E8）
#define?FLASH_USER_START_ADDR??????????（（uint32_t）0x0800F000）
#define?FLASH_USER_CHECK_ADDR_UID??????（（uint32_t）0x0800F010）
#define?FLASH_USER_CHECK_ADDR_CRC??????（（uint32_t）0x0800F04C）

#define?cFlash_mark????????????????????0xAA5555AA
#define?cFlash_default?????????????????0xFFFFFFFF

const?unsigned?char?*?CopyRight?=?“Copyright?（C）?2013?WARD.?All?rights?reserved.?GF“;
s_parameter???????????Para_RAM;
s_current?????????????current;
volatile?unsigned?int?Para_changed;

unsigned?long?Encryption（unsigned?long?input_data?unsigned?long?key1?unsigned?long?key2?unsigned?long?key3?unsigned?long?key4）
{
??unsigned?long?x1?x2?x3?x4?x5?x6?x7;
??unsigned?long?y0?y4?y5;

??x1?=?（input_data?&?0x0000ffff）;
??x2?=?（input_data?&?0xffff0000）?>>?16;??
??
??x3?=?x1?^?key2;
??x4?=?x2?^?key1;
??
??x5?=?x4?+?x3;
??x6?=?x5?<??
??x7?=?x6?%?key4;
??y0?=?x7?*?key3;
??
??x3?=?x1?+?key1;
??x4?=?x3?%?key3;
??
??x5?=?key4?^?x2;
??y4?=?x4?*?x5;
??y5?=?y0?^?y4;
??
??return?y5;?????????????????//加密后的數(shù)據(jù)出口
}

unsigned?int?Caculate_crc（unsigned?int?*pVal?unsigned?int?len）
{
??unsigned?int?lval_crc;
??
??/*?Compute?the?CRC?of?96?bits?uid?*/
??RCC_AHBPeriphClockCmd（RCC_AHBPeriph_CRC?ENABLE）;??

??CRC_ResetDR（）;
??
??lval_crc?=?CRC_CalcBlockCRC（pVal?len）;
??
??RCC_AHBPeriphClockCmd（RCC_AHBPeriph_CRC?DISABLE）;??
??
??return?lval_crc;
}

unsigned?int?Caculate_uid_crc（void）
{
??unsigned?int?buff_temp[3];

??buff_temp[0]?=?*（（__IO?uint32_t?*）STM32_CPUID????）;
??buff_temp[1]?=?*（（__IO?uint32_t?*）STM32_CPUID?+?1）;
??buff_temp[2]?=?*（（__IO?uint32_t?*）STM32_CPUID?+?2）;
????
??/*?Compute?the?CRC?of?96?bits?uid?*/?
??return?Caculate_crc（buff_temp?3）;
}

void?Parameter_Save（void）
{
??unsigned?int??buff_temp[0x20];
??unsigned?char?*pStr?*pSrc;
??unsigned?int??i;
??
??Para_RAM.crc?=?Caculate_crc（（uint32_t?*）&Para_RAM?19）;
??
??/*?Unlock?the?Flash?to?enable?the?flash?control?register?access?*/?
??
??FLASH_Unlock（）;?
??
??if?（FLASH_ErasePage（FLASH_USER_START_ADDR）?==?FLASH_COMPLETE）;
??{?????????
????pStr?=?（unsigned?char?*）&buff_