STC micro STC8A8K64D4 Series - Page 489

STC8A8K64D4 Series Manual
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Note: For general purpose, the program does not recognize whether the sector is valid or not, and the user decides according to the
specific model.
Date: 2021-11-5
******************************************/
#include "config.H"
#include "EEPROM.h"
#define Baudrate1 115200L
/************* local constant declaration **************/
u8 code T_StringD[]={" 去年今日此门中，人面桃花相映红。人面不知何处去，桃花依旧笑春风。 "};
u8 code T_StringW[]={" 横看成岭侧成峰，远近高低各不同。不识庐山真面目，只缘身在此山中。 "};
/************* local variable declaration **************/
u8 xdata tmp[70]; //General data
u8 xdata SaveTmp[70]; // array to write
bit B_TX1_Busy;
u8 cmd; // single character command of UART
/************* local function declaration **************/
void UART1_config(void);
void TX1_write2buff(u8 dat); //write send buffer
void PrintString1(u8 *puts); //send a string
/************* External function and variable declarations *****************/
/************* Read the EEPROM record, and verify, return the verification result, 0 is correct, 1 is wrong*****************/
u8 ReadRecord(u16 addr)
{
u8 i;
u16 ChckSum; //Calculated cumulative sum
u16 j; //Accumulated sum of reading
for(i=0; i<66; i++) tmp[i] = 0; //clear buffer
PassWord = D_PASSWORD; //given password
EEPROM_read_n(addr,tmp,66); //read sector 0
for(ChckSum=0, i=0; i<64; i++)
ChckSum += tmp[i]; //Calculate the cumulative sum
j = ((u16)tmp[64]<<8) + (u16)tmp[65]; //Read cumulative sum of records
j ^= 0x5555; //Invert every other bit, avoid all 0s
if(ChckSum != j) return 1; //If the cumulative sum is wrong, return 1
return 0; // If the cumulative sum is right, return 0
}
/************* Write the EEPROM record, and verify, return the verification result, 0 is correct, 1 is wrong *****************/
u8 SaveRecord(u16 addr)
{
u8 i;
u16 ChckSum; //Calculated cumulative sum
for(ChckSum=0, i=0; i<64; i++)