????????????е???????????????????
???????????? ???????[ 2013/7/11 10:43:23 ] ????????
????Linux??????????????????????????????????????
??????1????ò?????????????????????????????????????????????ù?????????????????л?????????????????ò????????????????????????????????л???????????????
??????2???????????????????????????????????е?????в?????????????л???????л???????????????
??????3??????ò??????????ж????????????????????????????????????
??????????????????????ò?????????????????????ж?ε?????????????????????????
??????1??????CPU?????????????μ????????????????????C?????????????????
??????2????????????????????????ж?????
??????????????Σ????????PPC405EP????ò?????????????
/*f=25MHz 1us---n=2*/
/*PPC405EP 1us---n=10*/
void delayus(unsigned char n)
{
n = n*10;
while(--n)
;
}
/*f=25MHz 1ms---n=1*/
/*PPC405EP 1ms---n=1*/
void delayms(unsigned char n)
{
unsigned char i=0x64;
while(--n)
{
while(--i)
delayus(0x64);
}
}
??????
???·???
??????????????????
2023/3/23 14:23:39???д?ò??????????
2023/3/22 16:17:39????????????????????Щ??
2022/6/14 16:14:27??????????????????????????
2021/10/18 15:37:44???????????????
2021/9/17 15:19:29???·???????·
2021/9/14 15:42:25?????????????
2021/5/28 17:25:47??????APP??????????
2021/5/8 17:01:11