下图中STM32的ISP下载电路作用 STM32一键下载电路中二极管的作用
\u95ee\u4e00\u4e0b \u8fd9\u4e2aSTM32\u677f\u5b50\u7684isp\u4e0b\u8f7d\u63a5\u53e3 \u7684\u5b9a\u4e49ISP\u4e0b\u8f7d\u5c31\u662f\u901a\u8fc7\u4e32\u53e31\u4e0b\u8f7d\u3002STM 32 \u7684FLASH\u4e2d\u6709\u4e2a\u7cfb\u7edf\u5b58\u50a8\u533a\u50a8\u5b58\u7740Bootloader\u7a0b\u5e8f\u4f7f\u5f97\u53ef\u4ee5\u7528\u4e32\u53e31\u6765\u4e0b\u8f7d\u7a0b\u5e8f\u3002\u56fe\u4e2d\u662f\u4e00\u4e2ausb\u8f6c\u4e32\u53e3\u7535\u8def\uff0cch340\u662f\u4e00\u7247\u5e38\u7528\u7684usb\u8f6c\u4e32\u53e3\u82af\u7247
\u8fd9\u4e2a\u662f\uff0c\u5f53 DTR=1\uff0cRTS=0\uff0c\u540c\u65f6\u51fa\u73b0\u540e\uff0c\u4e09\u6781\u7ba1Q3\u5c31\u5bfc\u901a\u4e86\uff0c\u96c6\u7535\u6781\u7535\u538b\u5c31\u662f\u4f4e\u7535\u5e73\u4e86\uff0c\u6b64\u65f6\u5c31\u901a\u8fc7\u4e8c\u6781\u7ba1D7\u6765\u62c9\u4f4eRESET\u7aef\uff0c\u800c\u4ea7\u751f\u590d\u4f4d\u4fe1\u53f7\uff1b
绛旓細ISP涓嬭浇灏辨槸閫氳繃涓插彛1涓嬭浇銆STM 32 鐨凢LASH涓湁涓郴缁熷瓨鍌ㄥ尯鍌ㄥ瓨鐫Bootloader绋嬪簭浣垮緱鍙互鐢ㄤ覆鍙1鏉ヤ笅杞界▼搴忋傚浘涓槸涓涓猽sb杞覆鍙ｇ數璺紝ch340鏄竴鐗囧父鐢ㄧ殑usb杞覆鍙ｈ姱鐗
绛旓細ISP涓嬭浇灏辨槸閫氳繃涓插彛1涓嬭浇銆STM 32 鐨凢LASH涓湁涓郴缁熷瓨鍌ㄥ尯鍌ㄥ瓨鐫Bootloader绋嬪簭浣垮緱鍙互鐢ㄤ覆鍙1鏉ヤ笅杞界▼搴忋傚浘涓槸涓涓猽sb杞覆鍙ｇ數璺紝ch340鏄竴鐗囧父鐢ㄧ殑usb杞覆鍙ｈ姱鐗
绛旓細J9鐭帴(BOOT1浣庣數骞)USB杞覆鍙ｆ澘鐨勪俊鍙峰湪鍓嶏紝STM32鐨淇″彿鍦ㄥ悗 GND->GND RXD->PA9(USART1.TX)TXD->PA10(USART1.RX)鐢垫簮鍙互鐢3V鎴栬5V閮藉彲浠ワ紝鍙淇濊瘉CPU姝ｅ父渚涚數灏卞彲浠ャ
绛旓細1銆佹妸boot0銆乵cu澶嶄綅寮曡剼鍜isp涓嬭浇鐢佃矾鏂紑銆2銆佹妸mcu澶嶄綅寮曡剼鍜宮cu鏌愪釜鎺у埗寮曡剼闂寸殑鐢垫皵杩炴帴鍓插紑銆3銆佹妸澶嶄綅鐢甸樆浠10k鏀逛负100k銆
绛旓細瀹屽叏鍙互锛ISP绫讳技浜庡崟鐗囨満鐨凚ootloader锛岀敤浜庤嚜宸涓嬭浇绋嬪簭銆傚畬鎴愬悗姝や覆鍙ｈ窡鏅氫覆鍙ｄ竴鏍蜂娇鐢ㄦ病鏈変换浣曢棶棰樸
绛旓細stm32f429isp涓嬭浇鏃犳硶鏀跺埌鍥炲簲瑙ｅ喅鏂规硶銆1銆佺‘淇濇澘瀛愮殑B0锛孊1鏄帴鍦扮殑銆2銆佺‘淇濆紑鍙戞澘鐨凱A9锛孭A10璺崇嚎甯芥槸榛樿鐨勪笌CH340鐨勪袱涓紩鑴氱浉杩炪3銆佺‘淇濆凡缁忓畨瑁呭ソ浜咰H340椹卞姩銆
绛旓細ISP 鏄竴绉嶅湪绾涓嬭浇绋嬪簭鐨勬柟寮忥紝涓嬭浇鐨勭洰鐨勫湴鏄疐LASH涓紝浣嗘槸鐢↖SP鏄粠鐢ㄦ埛鍖哄紑濮嬬殑鍐呭瓨鍦板潃涓嬭浇鐨勬瘮濡傝 0X80000--0X800020鏄敤鏉ュ瓨鏀剧敤鎴鐨処SP寮曞绋嬪簭鐨勶紝褰撲綘澶嶄綅骞朵笖鍚姩ISP浠ュ悗绋嬪簭浠ｇ爜锛堜竴鑸槸Bin锛夋枃浠跺皢浼氭寜鐓ф寚瀹氱殑鍦板潃涓嬭浇鍒0x800020浠ュ悗鐨勫尯鍩熴傜敤FLASH鍚姩绋嬫垨鑰呮槸浠嶳AM鍖哄惎鍔ㄧ▼搴忔槸鐩稿鐨勶紝...
绛旓細鏉傛尝寰堝ぇ 鐪嬬湅鏄笉鏄緵鐢典笉绋筹紝 鐢垫簮鐨勯棶棰
绛旓細boot1绠¤剼搴旇鎺ュ湴 ,boot0鎷夐珮锛屼覆鍙ｅ嚑娌″叧绯伙紝瀵瑰簲濂藉氨琛屻傛尝鐗圭巼115200銆備互涓婂鏋滈兘涓嶈锛屽缓璁崲涓覆鍙ｏ紝鎴栨崲涓姱鐗囪瘯璇
绛旓細涓插彛1锛岃姱鐗囬粯璁ょ殑鏄覆鍙1锛岀敤鍏跺畠涓插彛涓嬭浇涓嶄簡锛岃繕鏈変笅杞界殑鏃跺橞OOT0缃珮锛孊OOT1缃綆锛屼笅杞借蒋浠剁殑璇濆缓璁敤瀹樼綉鐨処SP涓嬭浇杞欢锛屾敮鎸丅IN鏂囦欢鍜孒EX绛夋枃浠朵笅杞姐傘傘
