C52单片机的xdata字符串数组，定义后怎么使用

方式一：

xdata 定义语句：

unsigned  char  xdata   *str="{\"success\":\"1\"\"result\":{\"timestamp\":\"1645579191\"\"datetime_1\":\"2032-02-23 09:19:51\"aa";

while(*str!=0)
{
str++;
i++;
if (i==66) year1=*str;
  if (i==67) year2=*str;
if (i==69) month1=*str;
if (i==70) month2=*str;
if (i==72) day1=*str;
if (i==73) day2=*str;
if (i==75) hour1=*str;
if (i==76) hour2=*str;
if (i==78) minute1=*str;
if (i==79) minute2=*str;
if (i==81) sec1=*str;
if (i==82) sec2=*str;

}
得到的内容，在LCD1602上无法显示。

方式二：

xdata定义：

unsigned  char  xdata  str[120]="{\"success\":\"1\"\"result\":{\"timestamp\":\"1645579191\"\"datetime_1\":\"2032-02-23 09:19:51\"aa";

year1=str[66];
year2=str[67];
month1=str[69];
month2=str[70];
day1=str[72];
day2=str[73];
hour1=str[75];
hour2=str[76];
minute1=str[78];
minute2=str[79];
sec1=str[81];
sec2=str[82];

在LCD1602上还是不可以显示！

LcdInit();
LcdWriteData(year1);
LcdWriteData(year2);
LcdWriteData('-');
LcdWriteData(month1);
LcdWriteData(month2);
LcdWriteData('-');
LcdWriteData(day1);
LcdWriteData(day2);
LcdWriteCom(0x40+0x80);
LcdWriteData(hour1);
LcdWriteData(hour2);
LcdWriteData(':');
LcdWriteData(minute1);
LcdWriteData(minute2);
LcdWriteData(':');
LcdWriteData(sec1);
LcdWriteData(sec2);
​

重金求解！！！！！！！！！！

***********重金求解******************​​​​​​​