STM32 SPI
鎺ュ彛鐨勭畝鍗曞疄鐜?/p>
閫氬父
SPI
閫氳繃
4
涓紩鑴氫笌澶栭儴鍣ㄤ欢鐩歌繛锛?/p>
鈼?/p>
MISO
锛?/p>
涓昏澶囪緭鍏?/p>
/
浠庤澶囪緭鍑哄紩鑴氥�?/p>
璇ュ紩鑴氬湪浠庢ā寮忎笅鍙戦�佹暟鎹紝
鍦ㄤ富妯″紡
涓嬫帴鏀舵暟鎹�?/p>
鈼?/p>
MOSI
锛?/p>
涓昏澶囪緭鍑?/p>
/
浠庤澶囪緭鍏ュ紩鑴氥�?/p>
璇ュ紩鑴氬湪涓绘ā寮忎笅鍙戦�佹暟鎹紝
鍦ㄤ粠妯″紡
涓嬫帴鏀舵暟鎹�?/p>
鈼?/p>
SCK
锛氫覆鍙ｆ椂閽燂紝浣滀负涓昏澶囩殑杈撳嚭锛屼粠璁惧鐨勮緭鍏?/p>
鈼?/p>
NSS
锛氫粠璁惧閫夋嫨銆傝繖鏄竴涓彲閫夌殑寮曡剼锛岀敤鏉ラ�夋嫨涓?/p>
/
浠庤澶囥�傚畠鐨勫姛鑳芥槸鐢?/p>
鏉ヤ綔涓衡�滅墖閫夊紩鑴氣�?/p>
锛岃涓昏澶囧彲浠ュ崟鐙湴涓庣壒瀹氫粠璁惧閫氳锛岄伩鍏嶆暟鎹嚎涓婄殑
鍐茬獊銆?/p>
浠庤澶囩殑
NSS
寮曡剼鍙互鐢变富璁惧鐨勪竴涓爣鍑?/p>
I/O
寮曡剼鏉ラ┍鍔ㄣ�?/p>
涓�鏃﹁浣胯兘
(SSOE
浣?/p>
)
锛?/p>
NSS
寮曡剼涔熷彲浠ヤ綔涓鸿緭鍑哄紩鑴氾紝骞跺湪
SPI
澶勪簬涓绘ā寮忔椂鎷変綆锛涙鏃讹紝
鎵�鏈夌殑
SPI
璁惧锛?/p>
濡傛灉瀹冧滑鐨?/p>
NSS
寮曡剼杩炴帴鍒颁富璁惧鐨?/p>
NSS
寮曡剼锛?/p>
鍒欎細妫�娴嬪埌浣?/p>
鐢靛钩锛?/p>
濡傛灉瀹冧滑琚缃负
NSS
纭欢妯″紡锛?/p>
灏变細鑷姩杩涘叆浠庤澶囩姸鎬併�?/p>
褰撻厤缃负涓?/p>
璁惧銆?/p>
NSS
閰嶇疆涓鸿緭鍏ュ紩鑴?/p>
(MSTR=1
锛?/p>
SSOE=0)
鏃讹紝濡傛灉
NSS
琚媺浣庯紝鍒欒繖涓?/p>
SPI
璁惧杩涘叆涓绘ā寮忓け璐ョ姸鎬侊細鍗?/p>
MSTR
浣嶈鑷姩娓呴櫎锛屾璁惧杩涘叆浠庢ā寮忋�?/p>
鏃堕挓淇″彿鐨勭浉浣嶅拰鏋佹�?/p>
SPI_CR
瀵勫瓨鍣ㄧ殑
CPOL
鍜?/p>
CPHA
浣嶏紝鑳藉缁勫悎鎴愬洓绉嶅彲鑳界殑鏃跺簭鍏崇郴銆?/p>
CPOL(
鏃堕挓
鏋佹�?/p>
)
浣嶆帶鍒跺湪娌℃湁鏁版嵁浼犺緭鏃舵椂閽熺殑绌洪棽鐘舵�佺數骞筹紝姝や綅瀵逛富妯″紡鍜屼粠妯″紡涓?/p>
鐨勮澶囬兘鏈夋晥銆?/p>
濡傛灉
CPOL
琚竻鈥?/p>
0
鈥?/p>
锛?/p>
SCK
寮曡剼鍦ㄧ┖闂茬姸鎬佷繚鎸佷綆鐢靛钩锛?/p>
濡傛灉
CPOL
琚疆鈥?/p>
1
鈥?/p>
锛?/p>
SCK
寮曡剼鍦ㄧ┖闂茬姸鎬佷繚鎸侀珮鐢靛钩銆?/p>
濡傛灉
CPHA(
鏃堕挓鐩镐綅
)
浣嶈缃�?/p>
1
鈥?/p>
锛?/p>
SCK
鏃堕挓鐨勭浜屼釜杈规部
(CPOL
浣嶄负
0
鏃跺氨鏄笅
闄嶆部锛?/p>
CPOL
浣嶄负鈥?/p>
1
鈥欐椂灏辨槸涓婂崌娌?/p>
)
杩涜鏁版嵁浣嶇殑閲囨牱锛屾暟鎹湪绗簩涓椂閽熻竟
娌胯閿佸瓨銆傚鏋?/p>
CPHA
浣嶈娓呪�?/p>
0
鈥?/p>
锛?/p>
SCK
鏃堕挓鐨勭涓�杈规部
(CPOL
浣嶄负鈥?/p>
0
鈥欐椂灏辨槸
涓嬮檷娌匡紝
CPOL
浣嶄负鈥?/p>
1
鈥欐椂灏辨槸涓婂崌娌?/p>
)
杩涜鏁版嵁浣嶉噰鏍凤紝鏁版嵁鍦ㄧ涓�涓椂閽熻竟
娌胯閿佸瓨銆?/p>
CPOL
鏃堕挓鏋佹�у拰
CPHA
鏃堕挓鐩镐綅鐨勭粍鍚堥�夋嫨鏁版嵁鎹曟崏鐨勬椂閽熻竟娌裤�?/p>
鍥?/p>
212
鏄剧ず浜?/p>
SPI
浼犺緭鐨?/p>
4
绉?/p>
CPHA
鍜?/p>
CPOL
浣嶇粍鍚堛�?/p>
姝ゅ浘鍙互瑙ｉ噴涓轰富璁惧鍜屼粠
璁惧鐨?/p>
SCK
鑴氥�?/p>
MISO
鑴氥�?/p>
MOSI
鑴氱洿鎺ヨ繛鎺ョ殑涓绘垨浠庢椂搴忓浘銆?/p>