北京11选5

嵌入式开发需要什么准备?选择ARM7还是ARM9?

2020-05-07 10:40:47分类:硬件开发205

北京11选5   ZHONGSUOZHOUZHI,YIGEQIANRUSHIXITONGZHUANGZHIYIBANDOUYOUQIANRUSHIJISUANJIXITONGHEZHIXINGZHUANGZHIZUCHENG, QIANRUSHITUBIAO QIANRUSHIJISUANJIXITONGSHIZHENGGEQIANRUSHIXITONGDEHEXIN,YOUYINGJIANCENG、ZHONGJIANCENG、XITONGRUANJIANCENGHEYINGYONGRUANJIANCENGZUCHENG。ZHIXINGZHUANGZHIYECHENGWEIBEIKONGDUIXIANG,TAKEYIJIESHOUQIANRUSHIJISUANJIXITONGFACHUDEKONGZHIMINGLING,ZHIXINGSUOGUIDINGDECAOZUOHUORENWU。

北京11选5   ARMGONGSISHEJILEXUDUOCHULIQI,TAMENKEYIGENJUSHIYONGDEBUTONGNEIHEHUAFENDAOGEGEXILIEZHONG。XILIEHUAFENSHIJIYUARM7、ARM9、ARM10、ARM11HECortexNEIHE。HOUZHUISHUZI7、9、10HE11BIAOSHIBUTONGDENEIHESHEJI。SHUZIDESHENGXUSHUOMINGXINGNENGHEFUZADUDETIGAO。QIANRUSHIDINGZHI

北京11选5   ARM7XILIECHULIQISHIYINGGUOARMGONGSISHEJIDEZHULIUQIANRUSHICHULIQIARM7NEIHESHI0.9MIPS/MHzDESANJILIUSHUIXIANHEFENG·NUOYIMANJIEGOU;ARM9NEIHESHI5JILIUSHUIXIAN,TIGONG1.1MIPS/MHzDEHAFOJIEGOU。ARM7MEIYOUMMU。

  ARM7XILIEBAOKUOARM7TDMI、ARM7TDMI-S、DAIYOUGAOSUHUANCUNCHULIQIHONGDANYUANDEARM720T。GAIXILIECHULIQITIGONGThumb16WEIYASUOZHILINGJIHEEmbededICERUANJIANDIAOSHIFANGSHI,SHIYONGYUGENGDAGUIMODESoCSHEJIZHONG。ARM7TDMIJIYUARMTIXIJIEGOUV4BANBEN,SHIMUQIANDIDUANDEARMHE。

  ARM7TDMICHULIQISHIARMTONGYONG32WEIWEICHULIQIJIAZUDECHENGYUANZHIYI。TAJUYOUYOUYIDEXINGNENG,DANGONGHAOQUEHENDI,SHIYONGMENDESHULIANGYEHENSHAO。TASHUYUJINGJIANZHILINGJIJISUANJI(RISC),BIFUZAZHILINGJIJISUANJI(CISC)YAOJIANDANDEDUO。ZHEIYANGDEJIANHUASHIXIANLE:GAODEZHILINGTUNTULIANG;CHUSEDESHISHIZHONGDUANXIANGYING;XIAODE、GAOXINGJIABIDECHULIQIHONGDANYUAN。SANJILIUSHUIXIAN:ARM7TDMICHULIQISHIYONGLIUSHUIXIANLAIZENGJIACHULIQIZHILINGLIUDESUDU。ZHEIYANGKESHIJIGECAOZUOTONGSHIJINXING,BINGSHICHULIHECUNCHUQIXITONGLIANXUCAOZUO,NENGTIGONG0.9MIPS/MHzDEZHILINGZHIXINGSUDU。ARM7TDMIDELIUSHUIXIANFEN3JI,FENBIEWEI:QUZHI、YIMA、ZHIXING。ZHENGCHANGCAOZUOGUOCHENGZHONG,ZAIZHIXINGYITIAOZHILINGDETONGSHIDUIXIAYITIAOZHILINGJINXINGYIMA,BINGJIANGDISANTIAOZHILINGCONGCUNCHUQIZHONGQUCHU。NEITONGSHIYOU5GEZHILINGZAIZHIXING。ZAITONGYANGDEJIAGONGGONGYIXIA,ARM9TDMICHULIQIDESHIZHONGPINLVSHIARM7TDMIDE1.8~2.2BEI。

  ARM9XILIECHULIQISHIYINGGUOARMGONGSISHEJIDEZHULIUQIANRUSHICHULIQI,ZHUYAOBAOKUOARM9TDMIHEARM9E-SDENGXILIE。

  ARM9采用哈佛体系结构,指令和数据分属不同的总线,可以并行处理。在流水线上,ARM7是三级流水线,ARM9是五级流水线。由于结构不同,ARM7的执行效率低于ARM9。平时所说的ARM7、ARM9实际上指的是ARM7TDMI、ARM9TDMI软核,这种处理器软核并不带有MMU和cache,不能够运行诸如linux这样的嵌入式操作系统。而ARM公司对这种架构进行了扩展,所以有了ARM710T、ARM720T、ARM920T、ARM922T等带有MMU和cache的处理器内核。
 

嵌入式开发需要什么准备?选择ARM7还是ARM9?
 

北京11选5   ARM7YUARM9DEQUBIE

  1.SHIZHONGPINLVDETIGAO

  SUIRANARM7HEARM9NEIHEJIAGOUXIANGTONG,DANARM7CHULIQICAIYONG3JILIUSHUIXIANDEFENG·NUOYIMANJIEGOU;,ERARM9CAIYONG5JILIUSHUIXIANDEHAFOJIEGOU。ZENGJIADELIUSHUIXIANSHEJITIGAOLESHIZHONGPINLVHEBINGXINGCHULINENGLI。5JILIUSHUIXIANNENGGOUJIANGMEIYIGEZHILINGCHULIFENPEIDAO5GESHIZHONGZHOUQINEI,ZAIMEIYIGESHIZHONGZHOUQINEITONGSHIYOU5GEZHILINGZAIZHIXING。ZAICHANGYONGDEXINPIANSHENGCHANGONGYIXIA,ARM7YIBANYUNXINGZAI100MHzZUOYOU,ERARM9ZEZHISHAOZAI200MHzYISHANG。

北京11选5   2ZHILINGZHOUQIDEGAIJIN

北京11选5   ZHILINGZHOUQIDEGAIJINDUIYUCHULIQIXINGNENGDETIGAOYOUHENDADEBANGZHU。XINGNENGTIGAODEFUDUYILAIYUDAIMAZHIXINGSHIZHILINGDEZHONGDIE,ZHEISHIJISHANGSHICHENGXUBENSHENDEWENTI。DUIYUCAIYONGZUIGAOJIDEYUYAN,YIBANLAISHUO,XINGNENGDETIGAOZAI30%ZUOYOU。

  3.MMU(NEICUNGUANLIDANYUAN)

  ARM7YIBANMEIYOUMMU(NEICUNGUANLIDANYUAN),(ARM720TYOUMMU)。ARM9YIBANSHIYOUMMUDE,ARM9940TZHIYOUMPU,BUSHIYIGEWANZHENGDEMMU。

  ZHEIYITIAOHENZHONGYAO,MMUDANYUANSHIDAXINGCAOZUOXITONGBIXUDEYINGJIANZHICHI,RUlinux;WINCEDENG。ZHEIJIUSHISHUO,ARM7YIBANZHINENGYUNXINGXIAOXINGDESHISHIXITONGRUUCOS-II,eCOSDENG,ERARM9WUCIXIANZHI,YIBANDECAOZUOXITONGDOUKEYIYIZHI。QISHIJISHIARM720TNENGZHICHILINUX;WINCEDENGXITONG,YEXIANYOURENYONG,YINWEIYIARM7DEYUNXINGSUDUPAOZHEIZHONGDAXINGCAOZUOXITONG,SHIZAIYOUDIANCHILI。ZAIZHELIANGZHEDEYINGYONGLINGYUMINGXIANBUTONG,YEWUCIBIYAO。

北京11选5   4.ARM7BIARM9TIGONGLEGENGHAODEXINGNENG-GONGHAOBI。TABAOHANLETHUMBZHILINGJIKUAISUCHENGFAZHILINGHEICEDIAOSHIJISHUDENEIHE。

北京11选5   5.ZAICONGARM7DAOARM9DEPINGTAIZHUANBIANGUOCHENGZHONG,YOUYIJIANSHIQINGSHIFEICHANGZHIDEQINGXINGDE,JIARM9ENENGGOUWANQUANDIXIANGHOUJIANRONGARM7SHANGDERUANJIAN;BINGQIEKAIFARENYUANMIANDUIDEBIANCHENGMOXINGHEJIAGOUJICHUYEBAOCHIYIZHI。

  RUGUOSHIYIBANXINGKONGZHIXITONGHUOJINJINYONGLAITIHUAN8HUO16WEIJI,ARM7XIANRANSHISHOUXUAN;DANRUGUOYONGZAIWANGLUOTONGXINHUODAXINGDEYINSHIPINCHULIDENG,ZEARM9JIAOHESHI。

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