STM32能实现将FLASH里的程序搬到 RAM中运行吗 STM32能实现将FLASH里的程序搬到 RAM中运行吗
STM32\u80fd\u5b9e\u73b0\u5c06FLASH\u91cc\u7684\u7a0b\u5e8f\u642c\u5230 RAM\u4e2d\u8fd0\u884c\u5417\u5f53\u7136\u53ef\u4ee5\uff0c\u53ea\u662f\u7f16\u8bd1\u5668\u9700\u8981\u8bbe\u7f6e\uff0c\u4e2d\u65ad\u5411\u91cf\u8868\u4e5f\u9700\u8981\u8bbe\u7f6e\u3002\u4ee5MDK\u4e3a\u4f8b\u5b50\uff0c\u8bf7\u770b\u4e0b\u9762\u6587\u686355\u7ae0\u7684\u4e32\u53e3IAP\uff0c\u9009\u62e9\u91cc\u9762\u6709\u7528\u7684\u90e8\u5206\u5373\u53ef\u3002
http://wenku.baidu.com/link?url=VRhgvWYTOIRDiD0ZgDAsoLsTcK-N7JIG-0HRLzHcUzyRAYeeMlP7uUKVkseUGG9Bd0vn4FRwRfv44Hv9gCA-myF0vTzM9PxIza6V19gSfie
x86cpu\u548c\u5355\u7247\u673a\u8bfb\u53d6\u7a0b\u5e8f\u7684\u5177\u4f53\u9014\u5f84pc\u673a\u5728\u8fd0\u884c\u7a0b\u5e8f\u7684\u65f6\u5019\u5c06\u7a0b\u5e8f\u4ece\u5916\u5b58\uff08\u786c\u76d8\uff09\u4e2d\uff0c\u8c03\u5165\u5230RAM\u4e2d\u8fd0\u884c\uff0ccpu\u4eceRAM\u4e2d\u8bfb\u53d6\u7a0b\u5e8f\u548c\u6570\u636e\u800c\u5355\u7247\u673a\u7684\u7a0b\u5e8f\u5219\u662f\u56fa\u5316\u5728flash\u4e2d\uff0ccpu\u8fd0\u884c\u65f6\u76f4\u63a5\u4eceflash\u4e2d\u8bfb\u53d6\u7a0b\u5e8f\uff0c\u4eceRAM\u4e2d\u8bfb\u53d6\u6570\u636e\u9020\u6210\u8fd9\u79cd\u5dee\u522b\u7684\u5177\u4f53\u539f\u56e0\u5206\u6790x86...
x86cpu和单片机读取程序的具体途径pc机在运行程序的时候将程序从外存（硬盘）中，调入到RAM中运行，cpu从RAM中读取程序和数据而单片机的程序则是固化在flash中，cpu运行时直接从flash中读取程序，从RAM中读取数据造成这种差别的具体原因分析x86...绛旓細褰撶劧鍙互锛屽彧鏄紪璇戝櫒闇瑕佽缃紝涓柇鍚戦噺琛ㄤ篃闇瑕佽缃備互MDK涓轰緥瀛愶紝璇风湅涓嬮潰鏂囨。55绔犵殑涓插彛IAP锛岄夋嫨閲岄潰鏈夌敤鐨勯儴鍒嗗嵆鍙
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绛旓細Table 7. Boot modesBoot mode selection pins Boot mode Aliasing BOOT1 BOOT0 x 0 Main Flash memory Main Flash memory is selected as boot space 0 1 System memory System memory is selected as boot space 1 1 Embedded SRAM Embedded SRAM is selected as boot space涓ゅ紩鑴氭帶鍒跺惎寮 鑸兘...
绛旓細x86cpu鍜屽崟鐗囨満璇诲彇绋嬪簭鐨勫叿浣撻斿緞pc鏈哄湪杩愯绋嬪簭鐨勬椂鍊欏皢绋嬪簭浠庡瀛橈紙纭洏锛変腑锛岃皟鍏ュ埌RAM涓繍琛岋紝cpu浠嶳AM涓鍙栫▼搴忓拰鏁版嵁鑰屽崟鐗囨満鐨勭▼搴忓垯鏄浐鍖栧湪flash涓锛宑pu杩愯鏃剁洿鎺ヤ粠flash涓鍙栫▼搴忥紝浠嶳AM涓鍙栨暟鎹犳垚杩欑宸埆鐨勫叿浣撳師鍥犲垎鏋恱86...
绛旓細棣栧厛锛屾垜浠渶瑕佸湪STM32涓瀹炵幇USB璁惧鍫嗘爤锛屽苟閰嶇疆瀹冧互渚夸笌PC杩涜閫氫俊銆傜劧鍚庯紝鎴戜滑鍙互缂栧啓浠ｇ爜鏉ヨ鍙Flash涓鐨刉AV鏂囦欢锛屽苟閫氳繃USB鎺ュ彛灏嗗叾鍙戦佸埌PC銆侾C绔垯闇瑕佷竴涓兘澶熻瘑鍒玈TM32浣滀负USB璁惧鐨勯┍鍔ㄧ▼搴忥紝浠ュ強涓涓兘澶熸帴鏀跺苟淇濆瓨WAV鏂囦欢鐨勫簲鐢ㄧ▼搴忋傛荤殑鏉ヨ锛孲TM32鍒癙C鐨刉AV鏂囦欢浼犺緭鏄竴涓秹鍙婂涓楠ょ殑...
绛旓細1.STM32鐨凢lash涓嶆槸NandFlash. NandFlash鐨勪綅璺宠浆姣旇緝鍘夊锛屽繀椤诲姞涓婁竴瀹氱殑鏍￠獙鍜屽浠芥満鍒舵墠鑳藉緢濂藉湴搴旂敤銆2.STM32鐨凢lash鍙互鐢ㄤ簬瀛樺偍浠ｇ爜锛屼篃鍙互鐢ㄤ簬瀛樺偍鏁版嵁銆備竴鑸潵璇存垜浠細灏嗕唬鐮佷繚瀛樺湪浠嶧lash寮濮嬬殑鍖哄煙涓紝浣欎笅鐨勯儴鍒嗙敤鏉ヤ繚瀛樻暟鎹紙浣犵殑鍙傛暟灏卞彲浠ヤ繚瀛樺湪杩欎釜閮ㄥ垎锛岃閮ㄥ垎鐨勫ぇ灏忓彇鍐充簬Flash鐨勫ぇ灏忓拰...
绛旓細鐢ˋPI鏂瑰紡锛屽厛鍐欎釜bootloader瀹炵幇璇诲啓鑷韩Flash銆佸閮╢lash鍜屼覆鍙ｏ紝API璺宠浆鍒扮敤鎴蜂唬鐮佸尯涔嬪墠閫氳繃bootloader閫氳繃涓插彛涓嶱C閫氫俊锛屽皢bin鏂囦欢浼犲叆澶栭儴Flash涓锛涙洿鏂板悗bootloader灏嗗閮‵lash鍐呭鍐欏叆鑷韩鍐呴儴Flash锛涘簲璇ユ槸杩欐牱鐨勶紝铏界劧鎴戣繕娌″仛杩囥
绛旓細鍐檉lash涓嶄竴瀹氳鎿﹂櫎锛屾摝闄ょ殑鐩殑鏄灏唂lash鎭㈠涓0xFF锛屾仮澶嶄负0xFF鐨勫師鍥犳槸鍐檉lash鍙兘灏嗏1鈥濇敼涓衡0鈥濓紝涓嶈兘鐢扁0鈥濇敼涓衡1鈥濄傛墍浠ワ紝濡傛灉浣犵煡閬撲綘灏嗚鍐欑殑鍦版柟鍘熸潵鐨勫唴瀹逛负0xFF锛岄偅涔堝氨涓嶇敤鎿﹂櫎銆傛摝闄ゆ椂鎸夐〉鎿﹂櫎銆
绛旓細杩欎釜娌℃湁鐜板瓨鐨勫姙娉曪紝浣犲彧鑳介氳繃鍐欎竴娈典唬鐮佸埌STM32涓锛屽啀璁╀綘鐨勪唬鐮瀹炵幇璇诲彇bin鏂囦欢鏁版嵁锛岄氳繃STM32鏉ュ啓鍏ワ紝鐩存帴浣跨敤jlink涓嬭浇鍣ㄤ箣绫荤殑鏄笉琛岀殑銆
绛旓細濡傛灉濡傛灉FLASH瓒冲澶э紝灏嗙涓娆＄▼搴忔斁鍦0x8000000 鍒 0x8001000锛宺am 涔熻缃竴涓尯鍩燂紝灏唘鐩樻彃鍏ュ悗锛鎶鍗佸叚杩涘埗鐨勭儳鍐欐枃浠舵斁鍒flash鐨勫彟涓涓尯鍩燂紝姣斿2000寮濮嬬殑鍦版柟锛岀劧鍚庤繍琛屾垜鍚庢斁鐨勮繖娈典唬鐮侊紝鎿︽帀绗竴娆＄殑锛岃繖鏍瀹炵幇绋嬪簭鏇存柊銆傝繖鏍锋槸鍚﹀彲琛岋紝棣欎富浠婂ぉ浼戞伅鍚楋紵
