Question

fatfs文件创建时间怎么添加

Answer 1

这样写
DWORD get_fattime(void)
{
DWORD time_buff=0;
PCF8563_ReadWrite_Time(1); //获取时间信息
//将时间十六进制转换成BCD码
TimeValue.year = HX_to_DX(TimeValue.year); //年
TimeValue.month = HEX_to_BCD(TimeValue.month); //月
TimeValue.date = HEX_to_BCD(TimeValue.date); //日
TimeValue.hour = HEX_to_BCD(TimeValue.hour); //时
TimeValue.minute = HEX_to_BCD(TimeValue.minute);//分
TimeValue.second = HEX_to_BCD(TimeValue.second);//秒
//按照FatFs的时间格式组合
time_buff |= ((TimeValue.year - 1980)<<25); //年
time_buff |= (TimeValue.month<<21); //月
time_buff |= (TimeValue.date<<16); //日
time_buff |= (TimeValue.hour<<11); //时
time_buff |= (TimeValue.minute<<5); //分
time_buff |= (TimeValue.second/2); //秒
return time_buff;
}