STC15系列單片機的內部EEPROM使用問題

ID:708768 · 發表于 2021-6-23 14:01

芯片是stc15W4K56S4，在加入eeprom相關程序后，期望存儲數據，但實際情況是，外部修改的數據在電路板掉電后，再次接電源時，修改的數據并沒有保存，不確定是函數的問題，還是數據根本沒有寫進去，請求解答，有涉及到EEPROM的部分單片機程序如下：

#include <intrins.h>
#include "STC15Fxxxx.H"
#define MAIN_Fosc 24000000UL
#define LcmXPixel 128
#define LcmYPixel 64
#define MIN(A,B) ((A)<(B)?(A):(B))
#define Uchar unsigned char
#define Uint unsigned int
#define Timer0_Reload (MAIN_Fosc / 1000)
#define CMD_IDLE 0
#define CMD_READ 1
#define CMD_PROGRAM 2
#define CMD_ERASE 3
#define MileageAddr 64
#define BLaddr 1024
u16 Buf[12][3]={{5,1,1},{5,3,1},{10,3,2},{5,6,2},{10,6,3},{15,4,3}};
Uchar IAPreadbyte(Uint addr);
void IAPprogrambyte(Uint addr , Uchar dat);
void IAPerasesector(Uint addr);
void IAPidle();
void writeDatas(Uint addr , Uchar *pdat , Uchar n);
void writeDatas(Uint addr , Uchar *pdat , Uchar n)
{
Uchar i;
IAPerasesector(addr);
for(i=0;i<n;i++)
{
IAPprogrambyte(addr+i,pdat[i]);
}
}
void main( void )
{
Uchar contrast=30;
DelayMS(10);
RES = 0;
DelayMS(200);
RES = 1;
DelayMS(50);
LcmInit();
ds1302_init();
ds1302_write_time();
P0M1 = 0; P0M0 = 0;
P1M1 = 0; P1M0 = 0;
P2M1 = 0; P2M0 = 0;
P3M1 = 0; P3M0 = 0;
P4M1 = 0; P4M0 = 0;
P5M1 = 0; P5M0 = 0;
P6M1 = 0; P6M0 = 0;
P7M1 = 0; P7M0 = 0;
INT_CLKO |= 0x20;
display_index = 0;
AUXR |= 0x80;
TMOD &= 0xF0;
TL0 = 0x00;// TH0 = (u8)(Timer0_Reload / 256);
TH0 = 0xDC;// TL0 = (u8)(Timer0_Reload % 256);
ET0 = 1; //Timer0 interrupt enable
TR0 = 1; //Timer0 run
EA = 1;
TF0 = 0;
Buf[select_2-2][0]=IAPreadbyte(0x0000);
while(1)
{
if(pagenum==21)
{
LcmPutStr(0,0,"________________");
LcmPutNum(7,4,Buf[select_2-2][1]);//LcmPutStr(100,4,"h");
LcmPutNum(43,4,Buf[select_2-2][0]);//LcmPutStr(50,4,"ml");
LcmPutNum(84,4,Buf[select_2-2][2]);//LcmPutStr(50,4,"d");
if(select_21==1){LcmPutStr(10,0,">");LcmPutStr(10,4," "); LcmPutStr(45,4," ");LcmPutStr(87,4," ");LcmPutStr(30,6," ");}
if(select_21==2){LcmPutStr(10,4,">");LcmPutStr(10,0," ");LcmPutStr(45,4," "); LcmPutStr(87,4," ");LcmPutStr(30,6," ");} //
if(select_21==3){LcmPutStr(45,4,">");LcmPutStr(10,0," ");LcmPutStr(10,4," "); LcmPutStr(87,4," ");LcmPutStr(30,6," ");} //
if(select_21==4){LcmPutStr(87,4,">");LcmPutStr(10,0," ");LcmPutStr(10,4," "); LcmPutStr(45,4," ");LcmPutStr(30,6," ");} //
if(B2PressOnce==1)
{
B2PressOnce=0;
if(select_21==2){if(Buf[select_2-2][1]<24){Buf[select_2-2][1]++; }else{Buf[select_2-2][1]=0;}}
if(select_21==3){if(Buf[select_2-2][0]<15){Buf[select_2-2][0]++; }else{Buf[select_2-2][0]=0;}}
if(select_21==4){if(Buf[select_2-2][2]<10){Buf[select_2-2][2]++; }else{Buf[select_2-2][2]=0;}}
}
if(B3PressOnce==1)
{
B3PressOnce=0;
if(select_21==1) {select_21=2;}
else if(select_21==2){select_21=3;}
else if(select_21==3){select_21=4;}
else if(select_21==4){select_21=1;}
}
if(B4PressOnce==1)
{
B4PressOnce=0;
if(select_21==1){pagenum=2;LcmClear(0x00);}
else {pagenum=3;LcmClear(0x00);}
}
writeDatas(0x0000,&Buf[select_2-2][0],4);
}
}
}
void IAPidle(void)
{
IAP_CONTR = 0;
IAP_CMD = 0;
IAP_TRIG = 0;
IAP_ADDRH = 0x80;
IAP_ADDRL = 0;
}
Uchar IAPreadbyte(Uint addr)
{
Uchar dat;
IAP_CONTR = 0x83;
IAP_CMD = CMD_READ;
IAP_ADDRL = addr;
IAP_ADDRH = addr>>8;
IAP_TRIG = 0x5A;
IAP_TRIG = 0xA5;
_nop_();
dat = IAP_DATA;
IAPidle();
return dat;
}
void IAPerasesector(Uint addr)
{
IAP_CONTR = 0x83;
IAP_CMD = CMD_ERASE;
IAP_ADDRL = addr;
IAP_ADDRH = addr>>8;
IAP_TRIG = 0x5A;
IAP_TRIG = 0xA5;
_nop_();
IAPidle();
}
void IAPprogrambyte(Uint addr , Uchar dat)
{
IAP_CONTR = 0x83;
IAP_CMD = CMD_PROGRAM;
IAP_ADDRL = addr;
IAP_ADDRH = addr>>8;
IAP_DATA = dat;
IAP_TRIG = 0x5A;
IAP_TRIG = 0xA5;
_nop_();
IAPidle();
}

復制代碼

ID:123289 · 發表于 2021-6-23 16:08

1、先證明數據的確寫入EEPROM了。證明方式，回讀EEPROM中的數據。
2、保證接電后，至讀取數據之前這段時間內，未對EEPROM做過擦除動作。

ID:362076 · 發表于 2021-6-27 15:14

你定義的MAIN_Fosc是24M，按照手冊所述，IAP_CONTR寄存器的低三位WT2/WT1/WT0應當為0/0/1，即IAP_CONTR應該賦值為0x81而不是當前使用的0x83，問題會不會是這個原因造成的呢？

帳號		自動登錄	找回密碼
密碼			立即注冊

久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费

STC15系列單片機的內部EEPROM使用問題