STM32
搴撳嚱鏁拌鏄庡強绀轰緥锛堢増鏈?/p>
V1.4.0
锛?/p>
----
绗竴绡囷細
GPIO
搴?/p>
鐩稿叧鏈璇存槑锛?/p>
gpio
锛氶�氱敤杈撳叆杈撳嚭鎺ュ彛
gpio
绠¤剼锛氫竴涓?/p>
io
绠¤剼锛岃繖涓鑴氬彲浠ユ湁澶氫釜閰嶇疆銆傚湪搴撳嚱鏁颁腑鐢?/p>
GPIO_Pin_1
杩欐牱鐨勫畯
瀹氫箟琛ㄧず
gpio
绔彛锛?/p>
gpio
鍒嗙粍锛夛細涓�缁?/p>
gpio
绠¤剼鐨勪俊鎭�傚湪搴撳嚱鏁颁腑鐢ㄥ畯瀹氫箟
GPIOA GPIOB
绛夎〃
绀?/p>
1
gpio
搴撹鏄?/p>
搴撴枃浠跺悕锛?/p>
stm32f4xx_gpio.c
鏂囨。鎻愮ず缈昏瘧锛?/p>
濡備綍浣跨敤杩欎釜椹卞姩
锛?/p>
1
锛?/p>
浣跨敤
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOx, ENABLE)
鍑芥暟浣胯兘
GPIO
鐨?/p>
AHB
鎬荤嚎鏃堕挓銆?/p>
锛?/p>
2
锛?/p>
浣跨敤
GPIO_Init()
鍑芥暟瀵规瘡涓紩鑴氳繘琛屽洓绉嶅彲鑳界殑閰嶇疆
銆?/p>
1
銆?/p>
杈撳叆鐘舵�侊細
Floating
锛堟诞绌猴級
, Pull-up
锛堜笂鎷夛級
, Pull-down
锛堜笅鎷夛級
銆?/p>
2
銆?/p>
杈撳嚭鐘舵�侊細
Push-Pull
锛堜笂鎷変笅鎷夛級
(Pull-up
锛堜笂鎷夛級
, Pull-down
锛堜笅鎷夛級
or no
Pull
锛堜笉涓婃媺涔熶笉涓嬫媺锛?/p>
)
锛?/p>
Open Drain
锛堝紑婕忥級
(Pull-up
锛堜笂鎷夛級
, Pull-down
锛堜笅鎷夛級
or no
Pull
锛堜笉涓婃媺涔熶笉涓嬫媺锛?/p>
)
锛屽湪杈撳嚭妯″紡锛岄�熷害閰嶇疆鎴?/p>
2MHZ,25MHZ,50MHZ
鍜?/p>
100MHZ.
銆?/p>
3
銆?/p>
绗簩鍔熻兘锛氫笂鎷変笅鎷夊拰寮�婕?/p>
銆?/p>
4
銆?/p>
妯℃嫙锛氬綋涓�涓鑴氳鐢ㄤ綔
ADC
閫氶亾鎴栬�?/p>
DAC
杈撳嚭鐨勬椂鍊欙紝闇�瑕侀厤缃垚姝ゆā寮?/p>
锛?/p>
3
锛?/p>
澶栬鐨勭浜屽姛鑳斤細
銆?/p>
1
銆?/p>
鍦?/p>
ADC
鍜?/p>
DAC
妯″紡锛屼娇鐢?/p>
GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AN
鎶婇渶瑕佺殑绠¤剼閰嶇疆鎴愭ā鎷熸ā寮?/p>
銆?/p>
2
銆?/p>
瀵逛簬鍏跺畠鐨勭鑴氾紙瀹氭椂鍣紝涓插彛绛夛級锛?/p>
l
浣跨敤
GPIO_PinAFConfig()
鍑芥暟鎶婄鑴氬拰闇�瑕佺殑绗簩鍔熻兘杩涜杩炴帴
l
浣跨敤
GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF
鎶婇渶瑕佺殑绠¤剼閰嶇疆鎴愮浜屽姛鑳芥ā寮?/p>
l
閫氳繃鎴愬憳鍙橀噺
GPIO_PuPd, GPIO_OType and GPIO_Speed
閫夋嫨绫诲瀷锛屼笂鎷変笅鎷夊拰杈撳嚭閫?/p>
搴?/p>
l
璋冪敤鍑芥暟
GPIO_Init()
锛?/p>
4
锛?/p>
鍦ㄨ緭鍏ユā寮忥紝浣跨敤鍑芥暟
GPIO_ReadInputDataBit()
寰楀埌閰嶇疆濂界鑴氱殑鐢靛钩
锛?/p>
5
锛?/p>
鍦ㄨ緭鍑烘ā寮忥紝
浣跨敤鍑芥暟
GPIO_SetBits()/GPIO_ResetBits()
璁剧疆閰嶇疆濂?/p>
IO
鐨勯珮浣?/p>
鐢靛钩
锛?/p>
6
锛?/p>
鍦ㄥ浣嶈繃绋嬪拰鍒氬垰澶嶄綅鍚庯紝绗簩鍔熻兘鏄棤鏁堢殑锛?/p>
GPIO
琚厤缃垚浜嗚緭鍏ユ诞绌烘ā寮?/p>
锛?/p>
JTAG
绠¤剼闄ゅ锛?/p>
锛?/p>
7
锛?/p>
褰?/p>
LSE
鎸崱鍣ㄥ叧闂殑鏃跺�欙紝
LSE
鎸崱鍣ㄧ鑴?/p>
OSC32_IN
鍜?/p>
OSC32_OUT
鍙互浣?/p>
涓洪�氳繃
IO
鏉ヤ娇鐢紙鍒嗗埆鐢?/p>
PC14
鍜?/p>
PC15
琛ㄧず锛夈�?/p>
LSE
鐨勪紭鍏堢骇楂樹簬
GPIO
鍑芥暟
锛?/p>
8
锛?/p>
褰?/p>
HSE
鎸崱鍣ㄥ叧闂殑鏃跺�欙紝
HSE
鎸崱鍣ㄧ鑴?/p>
OSC_IN
鍜?/p>
OSC_OUT
鍙互浣滀负閫?/p>
鐢?/p>
IO
锛?/p>
PH0
锛?/p>
PH1
锛夋潵浣跨敤銆?/p>
HSE
鐨勪紭鍏堢骇楂樹簬
GPIO
鍑芥暟銆?/p>
2
鍏蜂綋鍑芥暟璇存槑