ÄãºÃ£¡»¶Ó­À´µ½ÉîÛÚÊÐÓ±ÌØÐ¿Ƽ¼ÓÐÏÞ¹«Ë¾£¡
ÓïÑÔ
µ±Ç°Î»ÖãºÊ×Ò³ >> ¼¼ÊõÖÐÐÄ >> Ê×Ò³
ÄÚÈÝÁбí
2019-0751µ¥Æ¬»úÄÚ´æÀ©Õ¹£º´ÓƬÄÚROMÌø×ªµ½Æ¬ÍâROM

Ô´ÓÚÒ»ÄêǰÏë×Ô¼º¶¯ÊÖ¸ø51д¸öOS£¬±àÒëÑ¡Largeģʽ£¬µ÷ÊÔʱÕû¸öÁ÷³Ì¶¼Åܵĺúõģ¬¿ÉÊÇÉÕдµ½Æ¬ÉϺóµÃ²»µ½Ô¤ÆÚµÄЧ¹û£¬ºóÀ´²éÊé²ÅÖªµÀ51µ¥Æ¬»úƬÉÏÖ»ÓÐ4KRom£¬Èç¹ûûÓÐÀ©Õ¹Æ¬ÍâRom£¬µ±·ÃÎÊ4KÒÔÍâµÄ³ÌÐò¿Õ¼ä£¬³ÌÐòÖ¸ÕëÓÖ»á»Øµ½×ʼִÐС£²Î¿¼ÊÖ²áÀ©Õ¹Æ¬ÍâRomºó£¬ÄÜ·ÃÎÊ´ï64KµÄ³ÌÐò¿Õ¼ä¡£ÍøÉÏÄÜËÑË÷µ½µÄÀ©Õ¹·½Ê½[Ïêϸ]


2019-07ÄãÖªµÀµ¥Æ¬»úµÄÆô¶¯¹ý³ÌÂ𣿿´ÕâÀï

Æô¶¯´úÂëͨ³£¶¼ÉÕдÔÚflashÖУ¬ËüÊÇϵͳһÉϵç¾ÍÖ´ÐеÄÒ»¶Î³ÌÐò£¬ËüÔËÐÐÔÚÈκÎÓû§c´úÂë֮ǰ¡£Éϵçºó£¬arm´¦ÀíÆ÷´¦ÓÚarm̬£¬ÔËÐÐÓÚ¹ÜÀíģʽ£¬Í¬Ê±ÏµÍ³ËùÓÐÖжϱ»½ûÖ¹£¬pcµ½µØÖ·0´¦È¡Ö¸ÁîÖ´ÐС£Ò»¸ö¿ÉÖ´ÐÐÓ³ÏñÎļþ±ØÐëÓиöÈë¿Úµã£¬¶øÄÜ·ÅÔÚromÆðʼ´¦µÄÓ³ÏñÎļþµÄÈë¿ÚµØÖ·Ò²±ØÐëÉèÖÃΪ0.ÔÚ»ã±àÓïÑÔÖУ¬ÎÒÃÇÒѾ­Ëµ[Ïêϸ]


2019-07½ÌÄã¸ø51µ¥Æ¬»úÀ©Õ¹Æ¬ÍâRAM

ÉÏÒ»ÎÄÖÐÀ©Õ¹Á˵¥Æ¬»úµÄ³ÌÐò´æ´¢Æ÷£¬4KB´æ´¢¿Õ¼äÌáÉýµ½64KB¡£Æäʵ£¬4KµÄ´úÂë¿Õ¼ä»¹´ÕºÏ£¬µ«ÊÇ51×Ô´øµÄ256BÊý¾Ý´æ´¢¿Õ¼äʹÓÃÆðÀ´»¹Õæ½ôÕÅ£¬ÆäÖÐÁô¸øÓû§µÄÁ¬128B¶¼²»µ½£¬ËùÒÔ²»µÃ²»À©Õ¹Æ¬ÍâRAM¡£À©Õ¹RAM·½·¨ºÍÀ©Õ¹ROM²î²»¶à£¬¶¼ÊÇÕ¼ÓÃP0/P2¿Ú×öµØÖ·Ïߣ¬Í¬Ê±P0ÓÃËø´æÆ÷74373·Öʱ¸´ÓõØÖ·ºÍÊý¾ÝÐźš£ÒÔǰÀ©Õ¹RAMÊÇ[Ïêϸ]


2019-07JTAGµÄ×÷ÓúÍÔ­Àí

JTAGÊÇ×î»ù±¾µÄͨѶЭÒéÖ®Ò»£¬´ó¼Ò¿ÉÒÔÀí½âΪÓëRX TX»òÕßUSBµÄµÀÀíÊÇÒ»ÑùµÄ£¬Ö»ÊÇÒ»ÖÖͨѶÊֶΣ¬µ«ÓëRX TXÒÔ¼°USBÓкÜÖØ´óµÄ²»Í¬£¬ÄǾÍÊÇÕâ¸öJTAGЭÒéÊÇ×îµ×²ãµÄ£¬ËµµÄͨË×Ò»µã£¬Ò»°ãÀ´Ëµ£¬ÊÖ»úÀï±ß£¬CPUÊÇÀϴ󣬶԰É?µ«ÔÚJTAGÃæÇ°£¬Ëû¾Í²»ÊÇÀÏ´óÁË£¬JTAGЭÒé¾ÍÊÇÓÃÀ´¿ØÖÆCPUµÄ£¬ÔÚJTAGÃæÇ°CPU±ä³ÉආªÁË¡£Ò»°[Ïêϸ]


2019-07µ¥Æ¬»úSTARTUP.A51Ïê½â

 Startup code£ºÆô¶¯´úÂë¡£ÔÚKeilÖУ¬Æô¶¯´úÂëÔÚ¸´Î»Ä¿±êϵͳºóÁ¢¼´±»Ö´ÐС£Æô¶¯´úÂëÖ÷ҪʵÏÖÒÔϹ¦ÄÜ£º(1) Çå³ýÄÚ²¿Êý¾Ý´æ´¢Æ÷(2) Çå³ýÍⲿÊý¾Ý´æ´¢Æ÷(3) Çå³ýÍⲿҳ´æ´¢Æ÷(4) ³õʼ»¯smallģʽϵĿÉÖØÈëÕ»ºÍÖ¸Õë(5) ³õʼ»¯largeģʽϵĿÉÖØÈëÕ»ºÍÖ¸Õë(6) ³õʼ»¯compactģʽϵĿÉÖØÈëÕ»ºÍÖ¸Õë(7) ³õʼ»¯[Ïêϸ]


2019-07µ¥Æ¬»úÖÐÒ»¸ö³ÌÐòµÄÔËÐйý³ÌÏê½â

µ¥Æ¬»úÖÐÒ»¸ö³ÌÐòµÄÔËÐйý³Ì·ÖΪȡָÁ·ÖÎöÖ¸ÁîºÍÖ´ÐÐÖ¸Á¸ö²½Ö衣ȡָÁîµÄÈÎÎñÊÇ£º¸ù¾Ý³ÌÐò¼ÆÊýÆ÷PCÖеÄÖµ´Ó³ÌÐò´æ´¢Æ÷¶Á³öÏÖÐÐÖ¸ÁË͵½Ö¸Áî¼Ä´æÆ÷¡£·ÖÎöÖ¸Áî½×¶ÎµÄÈÎÎñÊÇ£º½«Ö¸Áî¼Ä´æÆ÷ÖеÄÖ¸Áî²Ù×÷ÂëÈ¡³öºó½øÐÐÒëÂ룬·ÖÎöÆäÖ¸ÁîÐÔÖÊ¡£ÈçÖ¸ÁîÒªÇó²Ù×÷Êý£¬ÔòѰÕÒ²Ù×÷ÊýµØÖ·¡£¼ÆËã»úÖ´ÐгÌÐòµÄ¹ý³Ìʵ¼ÊÉÏ[Ïêϸ]


2019-07NordicÀ¶ÑÀоƬnrf52832µÄ¼Ü¹¹ºÍ¿ª·¢

Ïà±ÈTIµÄCC254X¡¢DIALOGµÄDA1458X£¬nordicÍÆ³öµÄnrf51822ºÍnrf52832Ôڼܹ¹ºÍ¿ª·¢É̶¼ÓÐ×Ô¼º¶ÀÌØµÄµØ·½¡£Õ⼸¿Å²úÆ·¶¼ÊÇÀ¶ÑÀµÍ¹¦ºÄоƬ¡£DA1458XʹÓÃOTPÓ²¼þ¼Ü¹¹£¬¹¦ºÄµÍ£¬³É±¾Ò²µÍ£¬µ«Èí¼þ¿ª·¢ÄѶÈÊǸöÃż÷£¬´óÍŶӲÅÄÜ×öµ½Á¿²ú£¬µ±È»ÕÆÎÕÁËÒ²ÊǾºÕùÁ¦(Ïëѧϰ¿ª·¢¾Í²Î¿¼²©Ö÷֮ǰµÄ·ÖÏí°É)¡£Èç¹û¶ÔÈýÖּܹ¹¶¼ºÜÊì[Ïêϸ]


2019-07I2C×ÜÏßµÄÖÙ²ÃÎÊÌâ

 ¡¾ÎÊ¡¿ÓÐÍøÓÑÎʹØÓÚI2C×ÜÏßµÄÖÙ²ÃÎÊÌ⣺The I2C-bus specificationµÄµÚ13Ò³ÓÐÕâÑùµÄ»°£ºIn other words, arbitration isn’t allowed between:* A repeated START condition and a data bit* A STOP condition and a data bit* A repeated START condition and a STOP condition.Slaves are n[Ïêϸ]


2019-07µ¥Æ¬»ústartup.a51ÎļþÄÚÈݵÄÏê½â

 1.±êºÅIDATALEN EQU 80H ; the length of IDATA memory in bytes.ÕâÀïIDATALENÖ»ÊÇÒ»¸ö±êºÅ¶øÒÑ£¬ºÍidata²»ÊÇÒ»»ØÊÂ!ÄãÒªÊÇÔ¸Ò⣬Õâ¶Î³ÌÐòÀïµÄIDATALENÄãÍêÈ«¿ÉÒԸijÉdogѽ£¬pigѽ£¬playboyѽÕâЩ±êºÅ(ÆäʵÎÒµÄÀíÏëÊǹýÖíÒ»ÑùµÄÉú»î£¬²»³î³ÔºÈ£¬ÎÞÓÇÎÞÂÇ£¬¿Éϧ×ö²»µ½)£¬ÉÏÃæµÄÕâÒ»¾äÊÇ˵³ÌÐòÀïÃæ·²ÊÇÓÃ[Ïêϸ]


2019-07¹ØÓÚIARµÄһЩ×ܽá -- Flash LoaderÔ­Àí

 ÏÈ˵˵Flash LoaderÕâ¸öС³ÌÐò£¬IARµ÷ÊÔÆ÷C-SPYĬÈÏÊÇͨ¹ýËüÀ´Íê³ÉÊý¾Ý´«Êä¡¢Flash ²Á³ýºÍÉÕдµÈÈÎÎñ£¬µ±È»Ç°ÌáÊǵÃÑ¡ÖÐOptions->Debugger->DownloadÑ¡ÏîϵēUse Flash Loader”£¬ÈçÏÂͼ£ºÏÂÃæÎÒÃÇ˵˵FlashloaderµÄ¹¤×÷Ô­Àí£¬ÆäʵFlashloaderÊÇIARΪC-SPYµ÷ÊÔÆ÷¿ª·¢µÄÒ»¸ö¿ÉÖ´ÐÐС[Ïêϸ]


2019-07»ùÓÚ9Öá¹ßÐÔÔ˶¯´«¸ÐÆ÷µÄÈý½×¿¨¶ûÂüÂ˲¨Æ÷Ëã·¨

×î½üÔÚÍæ¾ÅÖáµÄ¹ßÐÔ´«¸ÐÆ÷£¬ºÜÊÇÓÐÌôÕ½ÐÔ.¾ÅÖá˵µÄÊÇÈýÖáµÄ¼ÓËٶȼơ¢ÈýÖáµÄÍÓÂÝÒÇÒÔ¼°ÈýÖáµÄ´Å³¡´«¸ÐÆ÷¡£µ«ÊÇÖ»Êǵ¥´¿µÄ²â³ö¾Å¸öÖáµÄÊý¾ÝûʲôÓ㬹ؼüÊÇÒªÄܹ»ÈÚºÏÕâ¾ÅÖáÊý¾ÝµÃ³öÎÒÃÇÏëÒªµÄ½á¹û¡£ÕâÀï¾ÍÔËÓÃÈý½×¿¨¶ûÂüÂ˲¨Ëã·¨À´ÈÚºÏÕâ¾ÅÖáÔ˶¯Êý¾ÝΪÈýÖáµÄ½Ç¶È¡£ÔËÓÃÕâÈý¸ö½Ç¶È¿ÉÒÔÓÃÀ´×ö×ÔÆ½ºâ³µ»òÕßËÄÖá·É[Ïêϸ]


2019-07¶¥¼¶³ÌÐòÔ±µÄ˼ά·½Ê½ÆÀ¡¶´úÂëÖ®ÃÀ¡·µÚÎåÌõÅ£±Æ

 ¹«Ë¾ÀïÔøÔÚ±±ÃÀ×÷Ϊ²úÆ·Ñз¢¾­ÀíµÄ×ÊÉîÈËÎïijÈÕºÍÎÒÏÐÁÄ£¬Ëµµ½ÖÐÃÀ³ÌÐòÔ±µÄ²î±ð£¬±±ÃÀµÄ³ÌÐòÔ±£¬ÓÈÆäÊÇ·¢Ã÷ÄÇЩ¸ù±¾ÐÔ¶«Î÷±ÈÈçJAVA, ±ÈÈçMessage»úÖÆ£¬Óõö¼ÊǷdz£¼òµ¥µÄ°ì·¨£¬Ò»·½Ã棬ӢÓï×÷ΪĸÓÓë³ÌÐòÉè¼ÆÓïÑÔ¸ü¼Ó¿¿½ü£¬±ÈÖйúµÄÏóÐÎÎÄ×ÖÀ´µÄ½ü£¬ÁíÒ»·½Ã棬ÕâЩ±±ÃÀµÄ³ÌÐòÔ±ËÆºõ¶¼ÉîÚÏ´óµÀÖÁ¼òµÄ[Ïêϸ]


2019-07I2CÉÏÀ­µç×è½âÎö

 I2CµÄÉÏÀ­µç×è¿ÉÒÔÊÇ1.5K£¬2.2K£¬4.7K£¬ µç×èµÄ´óС¶ÔʱÐòÓÐÒ»¶¨Ó°Ï죬¶ÔÐźŵÄÉÏÉýʱ¼äºÍϽµÊ±¼äÒ²ÓÐÓ°Ï죬һ°ã½Ó1.5K»ò2.2KI2CÉÏÀ­µç×èÈ·¶¨ÓÐÒ»¸ö¼ÆË㹫ʽ£ºRmin={Vdd(min)-o.4V}/3mARmax=(T/0.874) *c, T=1us 100KHz, T=0.3us 400KHzCÊÇBus capacitanceRp×î´óÖµÓÉ×ÜÏß×î´óÈÝÏÞ(Cbmax)¾ö¶¨,Rp×îС[Ïêϸ]


2019-07³õ²½ÈÏʶ8051µ¥Æ¬»úоƬ

 ÉÏÒ»¿ÎÎÒÃǵĵÚÒ»¸öÏîÄ¿Íê³ÉÁË£¬¿ÉÄÜÓж®CÓïÑÔµÄÅóÓÑ»á˵£¬"ÕâºÍPC»úÉϵÄCÓïÑÔûÓжà´óµÄÇø±ðѽ"¡£µÄȷûÓÐÌ«´óµÄÇø±ð£¬CÓïÑÔÖ»ÊÇÒ»ÖÖ³ÌÐòÓïÑÔµÄͳ³Æ£¬Õë¶Ô²»Í¬µÄ´¦ÀíÆ÷Ïà¹ØµÄCÓïÑÔ¶¼»áÓÐһЩϸ½ÚµÄ¸Ä±ä¡£±àдPC»úµÄC³ÌÐòʱ£¬ÈçÒª¶ÔÓ²¼þ±à³ÌÄã¾Í±ØÐë¶ÔÓ²¼þÒªÓÐÒ»¶¨µÄÈÏʶ£¬51µ¥Æ¬»ú±à³Ì¾Í¸üÊÇÈç[Ïêϸ]


2019-07ÄãÖªµÀMCUºÍPCÔÚ´úÂë¼ÓÔØºÍÔËÐÐÉÏÓкÎÇø±ðÂð£¿

 Ò»¡¢Ê×ÏÈ̸һϼ¸ÖÖµôµç²»¶ªÊý¾ÝµÄ´æ´¢É豸£º1.Norflash£º¿É²Áд£¬¹ó£¬ÔÚNorflashÉÏ¿ÉÒÔÖ±½ÓÔËÐдúÂë!2.Nandflash£º¿É²Áд£¬±ãÒË£¬Ö»ÄÜÓÃÓÚ´æ´¢Êý¾Ý;3.´ÅÅÌ£º¾ÍÊÇÎÒÃdz£ËµµÄÓ²ÅÌ£¬¿É²Áд£¬±ãÒË£¬Ö»ÄÜÓÃÓÚ´æ´¢Êý¾Ý;¶þ¡¢ÕýÌâ1.MCU´ó¶àÊýµ¥Æ¬»úµÄ´úÂë¶¼ÊÇ´æÔÚNorflashÀïÃæ£¬Õâ¾ÍÒâζ×ųÌÐò¿ÉÒÔÖ±½ÓÔÚf[Ïêϸ]


2019-07¶ÔÓÚGCC¾¯¸æÑ¡ÏîµÄÀí½â

 GCC¾¯¸æÑ¡Ïî¶ÔÎÒÃǼ°Ê±ÕÒ³ö´úÂëÖÐBUG£¬¸ÄÉÆ´úÂëÆ·ÖʺÜÓаïÖú¡£Ìý˵¸ßÊÖÃǶÔÿ¸ö¾¯¸æÑ¡Ïî¶¼ºÜÊìϤ£¬ÄÜÁé»îÔËÓø÷¸ö¾¯¸æÑ¡ÏîÀ´·ÖÃűðÀàµØ¹ýÂË´úÂëÖеÄBUGÐÅÏ¢¡£1../SRC/libpjmacl/pjmacl_jaccmd.c:1661: ¾¯¸æ: dereferencing type-punned pointer will break strict-aliasing rulespjmacl_free((void*[Ïêϸ]


2019-07̸̸µ¥Æ¬»úÂã±¼µÄ³ÌÐò¿ò¼Ü

 ³õѧµ¥Æ¬»úʱ£¬¶¼»á¾À½áÓÚÆä¸÷¸öÄ£¿é¹¦ÄܵÄÓ¦Óã¬Èç´®¿Ú(232£¬485)¶Ô¸÷ÖÖ¹¦ÄÜICµÄ¿ØÖÆ,µç»ú¿ØÖÆPWM£¬ÖжÏÓ¦Ó㬶¨Ê±Æ÷Ó¦Óã¬ÈË»ú½çÃæÓ¦Óã¬CAN×ÜÏßµÈ. ÕâÊÇÒ»¸öѧϰ¹ý³ÌÖбØÐèµÄ½×¶Î£¬ÊÇ»ù±¾¹¦¡£ºÜÇìÐÒ£¬Ôڲμӵç×ÓÉè¼Æ´óÈüÈüǰÅàѵʱ£¬MCUÖÜΧµÄ¿ØÖƶ¼ÑµÁ·µÄºÜÔúʵ¡£¾­¹ýÕâ¸ö½×¶Îºó£¬ºóÀ´½Ó´¥²»Í¬µÄMCU[Ïêϸ]


2019-07µ¥Æ¬»úʵս¿ª·¢Ï¸½Ú:ÈçºÎΪµ¥Æ¬»úµÄ°´¼ü¼ÓÒ»¸öËø·ÀÖ¹¶à´Î´¥·¢

 ×î½üÒ»Ö±ÔÚ×öÁèÑôµÄGPL32001µÄµ¥Æ¬»ú¿ª·¢£¬Ö÷´ò²úÆ·ÊÇÒ»¼Ü¸ÖÇÙ¡£ÔÚÕâ¼Ü¸ÖÇÙÉÏ£¬ÎÒÃÇ¿ÉÒÔ¿´µ½±é²¼×źܶఴ¼ü£¬ÓÐÇÙ¼ü£¬Ò²Óй¦ÄÜÑ¡ÔñµÄ°´¼ü£¬Ãæ¶ÔÈç´Ë¶àµÄ°´¼ü£¬¶ÔÓÚÒ»¸ö¸Õ³öÀ´¹¤×÷µÄС»ï°é¿Ï¶¨Ñ¹Á¦±È½Ï´ó£¬ÇÙ¼üµÄÌØÕ÷ºÍÆÕͨ°´¼ü²»Ì«Ò»Ñù£¬ÇÙ¼üµÄÒ»¸ö°´¼üÓÉÁ½¸ö°´¼ü×é³É£¬Ò»¸ö°´¼ü´¢´æ×ÅÁ½ÑùÐÅÏ¢£¬Á¦¶ÈºÍ¼ü[Ïêϸ]


2019-07³õѧÕ߱ؿ´!µç×ÓÓ²¼þ֪ʶÌåϵ

×î½üÓв»ÉÙÈí¼þÁìÓòµÄÅ£È˽ø¾üÓ²¼þÐÐÒµ£¬µ«²»Öª´ÓºÎ´¦ÈëÊÖ¡£ÏàÐÅÿ¸öÈËÃæ¶ÔÒ»¸öÅÓ´óµÄ֪ʶÌåϵʱ¶¼Ò»ÑùÃÔã¡£×î¼ÑµÄÓ¦¶Ô²ßÂÔ¾ÍÊÇÕÒÒ»¸ö×îÌù½ü×Ô¼ºÐèÇóµÄÇÐÈëµã£¬È»ºóÏòËÄÃæ°Ë·½ÆÌ¿ªÈ¥Öð½¥ÈÏʶÕû¸öÖªÊ¶ÍøÂç¡£ÕâÆªÎÄÕ¾ÍÊÇΪÁËÈÃÄãÔÚÕâ¸öÖªÊ¶ÍøÀïÃæÕÒµ½×Ô¼ºÏÖÔÚµÄλÖã¬È»ºóÓÐÄ¿µÄÓз½ÏòµØÑ¡ÔñÏÂÒ»²½¡£¼òµ¥À´½²[Ïêϸ]


2019-07´´ÒµÖ®Ð¡ÆóÒµµÄÉú´æÖ®µÀ

 Õ⼸Ì죬ÎÒÔÚ¶ÁSeth GodinµÄ¡¶´´ÒµÕßÊ¥¾­£ºÓд´Ò⣬ÎÞ×ʽð£¬ÈçºÎÆð¼Ò¡·(The Bootstrapper's Bible£¬ÉϺ£ÒëÎijö°æÉ磬2000)¡£µ±Äã°×ÊÖÆð¼Ò£¬¿ªÊ¼´´ÒµµÄʱºò£¬Êг¡ÍùÍùÒѾ­±»¼¸¼Ò´óÆóÒµÀÎÀÎÕ¼¾Ý¡£ÈçºÎÔÚÓë´óÆóÒµµÄ¾ºÕùÖдæ»îÏÂÀ´£¬¾Í³ÉÁËÄãÃæ¶ÔµÄ×î´óÎÊÌâ¡£Ðí¶à´´ÒµÕß¶ÔÕâ¸öÎÊÌâȱ·¦ÇåÐѵÄÈÏʶ£¬²»¶®µÃÑï[Ïêϸ]


ÁªÏµ·½Ê½

0755-82591179

´«Õ棺0755-82591176

ÓÊÏ䣺vicky@yingtexin.net

µØÖ·£ºÉîÛÚÊÐÁú»ªÇøÃñÖνֵÀÃñÖδóµÀ973ÍòÖÚÈó·á´´ÒµÔ°A¶°2Â¥A08

Copyright © 2014-2025 Ó±ÌØÐ¿Ƽ¼ÓÐÏÞ¹«Ë¾ All Rights Reserved.  ÔÁICP±¸14043402ºÅ-4