我寫入的DataFlash的驅(qū)動程序如下

/*
?*?MyDataFlash.c
?*
?*??Created?on:?Aug?25,?2022
?*??????Author:?Lee
?*/
#include?"MyDataFlash.h"
#include?"config.h"
#include?"multiCentral.h"


volatile?uint8_t?MacAddr_Update_Flag=0;


uint8_t?MyDataFlash_Check(void)
{
????u8?temp;
????EEPROM_READ(FIRST_POWON_ADDR,&temp,?1);//避免每次開機都寫DataFlash
????EEPROM_READ(SLAVE1_STARTADDR,&PeerAddrDef[0],?6);
????EEPROM_READ(SLAVE2_STARTADDR,&PeerAddrDef[1],?6);
????PRINT("Device?%d?-?Addr?%02x?%02x?%02x?%02x?%02x?%02x?\n",?0,
????????????PeerAddrDef[0].peerAddr[0],
????????????PeerAddrDef[0].peerAddr[1],
????????????PeerAddrDef[0].peerAddr[2],
????????????PeerAddrDef[0].peerAddr[3],
????????????PeerAddrDef[0].peerAddr[4],
????????????PeerAddrDef[0].peerAddr[5]);
????PRINT("Device?%d?-?Addr?%02x?%02x?%02x?%02x?%02x?%02x?\n",?1,
????????????PeerAddrDef[1].peerAddr[0],
????????????PeerAddrDef[1].peerAddr[1],
????????????PeerAddrDef[1].peerAddr[2],
????????????PeerAddrDef[1].peerAddr[3],
????????????PeerAddrDef[1].peerAddr[4],
????????????PeerAddrDef[1].peerAddr[5]);
????if(temp==FIRST_POWON_VALU)return?0;
????else//排除第一次初始化的情況
????{

????????memcpy(&PeerAddrDef[0],"\x99\x59\x9C\x4C\x17\x20",6);
????????EEPROM_WRITE(SLAVE1_STARTADDR,?&PeerAddrDef[0],?6);
????????memcpy(&PeerAddrDef[1],"\x59\x59\x9C\x4C\x17\x20",6);
????????EEPROM_WRITE(SLAVE2_STARTADDR,?&PeerAddrDef[1],?6);

????????temp=FIRST_POWON_VALU;
????????EEPROM_WRITE(FIRST_POWON_ADDR,?&temp,?1);
????????EEPROM_READ(FIRST_POWON_ADDR,?&temp,?1);
????????if(temp==FIRST_POWON_VALU)return?0;
????}
????return?1;
}


void?MyDataFlash_SaveMAC(?uint8_t*?Addr1,uint8_t*?Addr2)
{
????uint8_t?d[12]={0};
????PRINT("Device?%d?-?Addr?%02x?%02x?%02x?%02x?%02x?%02x?\n",?0,
????????????Addr1[0],
????????????Addr1[1],
????????????Addr1[2],
????????????Addr1[3],
????????????Addr1[4],
????????????Addr1[5]);
????PRINT("Device?%d?-?Addr?%02x?%02x?%02x?%02x?%02x?%02x?\n",?1,
????????????Addr2[0],
????????????Addr2[1],
????????????Addr2[2],
????????????Addr2[3],
????????????Addr2[4],
????????????Addr2[5]);
????EEPROM_WRITE(SLAVE1_STARTADDR,?Addr1,?6);
????EEPROM_WRITE(SLAVE2_STARTADDR,?Addr2,?6);

}

另有頭文件如下

/*
?*?MyDataFlash.h
?*
?*??Created?on:?Aug?25,?2022
?*??????Author:?Lee
?*/

#ifndef?_MYDATAFLASH_H_
#define?_MYDATAFLASH_H_

#include?"CH58x_common.h"


#define?FIRST_POWON_ADDR????0xFF//第一次開機校驗的值存儲的地址
#define?FIRST_POWON_VALU????0xA5//第一次開機校驗的值

#define?SLAVE1_STARTADDR????0x00//從機1的mac在dataflash中的首地址
#define?SLAVE2_STARTADDR????SLAVE1_STARTADDR+6//從機2的mac在dataflash中的首地址

extern?volatile?uint8_t?MacAddr_Update_Flag;

extern?uint8_t?MyDataFlash_Check(void);
extern?void?MyDataFlash_SaveMAC(?uint8_t*?Addr1,uint8_t*?Addr2);


#endif?/*?_MYDATAFLASH_H_?*/

現(xiàn)在發(fā)現(xiàn)MyDataFlash_SaveMAC這個函數(shù)寫入的值如下

Device 1 - Addr 99 59 9c 4c 17 20?

Device 2 - Addr 59 59 9c 4c 17 20?

然后開機通過這個

MyDataFlash_Check

函數(shù)讀出：

Device 0 - Addr 59 19 9c 4c 17 20?

Device 1 - Addr 89 51 9c 4c 17 20?

發(fā)現(xiàn)前面兩個字節(jié)變掉了

可以打印8個字節(jié)的大小，uuid是8個字節(jié)的大小，包含了mac地址的信息，上面打印6個字節(jié)的大小可能正好是錯開了。在處理時先擦除一下。

參考一下我們的FLASH例程，里面就有獲取MAC地址的函數(shù)

如果想要獲取配對設(shè)備的MAC地址信息，可以根據(jù)廣播包對應篩選

是寫Dataflash沒擦除的原因