\u8fd9\u4e2a\u7ae0\u8282\u6211\u4eec\u5c06\u5b66\u4e60\u6700\u57fa\u672c\u7684 STM32 \u7684 GPIO \u7684\u5e94\u7528. \u6211\u4eec\u5c06\u5206\u4e3a\u4e24\u4e2a\u7ae0\u8282\u6765\u5b66\u4e60.<\/p>\n

\u7b2c\u4e00\u90e8\u4efd: GPIO \u7684\u57fa\u672c\u5e94\u7528\u548c IO \u53e3\u7684\u914d\u7f6e\n\u7b2c\u4e8c\u90e8\u4efd: \u5916\u90e8\u4e2d\u65ad\u7684\u4f7f\u7528<\/p>\n

1: \u8bbe\u8ba1\u8981\u6c42:<\/span>\n<\/span><\/strong> \u5f00\u53d1\u677f\u4e0a\u6709 2 \u4e2a LED,\u00a0\u00a0\u6211\u4eec\u7684\u76ee\u7684\u4e3a\u6709\u89c4\u5f8b\u7684\u70b9\u4eae LED1 \u548c LED2. \u5f53\u6309\u952e\u6309\u4e0b\u53bb\u7684\u65f6\u5019\u6240\u6709\u7684\u706f\u706d, \u7b49\u5f85 2 \u79d2\u949f\u540e\u6062\u590d\u6709\u89c4\u5f8b\u7684\u70b9\u4eae.<\/p>\n

2: \u786c\u4ef6\u7535\u8def:<\/span>\n<\/strong><\/span>\n $\"\"$ $\"2.GIF\"$ <\/p>\n

\u4e0b\u8f7d<\/strong><\/a> (7.83 KB)\n2009-7-29 22:55<\/div>\n<\/div>\n
3: \u8f6f\u4ef6\u7a0b\u5e8f\u8bbe\u8ba1:\n<\/span>(1) \u6839\u636e\u8981\u6c42\u914d\u7f6e GPIOA \u4e2d\u7684 PA0,PA1 \u4e3a\u8f93\u51fa, PA3, PA8 \u4e3a\u8f93\u5165\n<\/strong><\/p>\n
\u5bf9\u4e8e\u4e0b\u9762\u7a0b\u5e8f\u4e2d\u7684\u00a0\u00a0GPIO_InitStructure.GPIO_Speed \u548c GPIO_InitStructure.GPIO_Mode \u63a8\u8350\u5927\u5bb6\u770b\u4e0b\u9762\u4e24\u7bc7\u6587\u7ae0.<\/p>\n
STM32 GPIO\u7684\u5341\u5927\u4f18\u8d8a\u529f\u80fd\u7efc\u8ff0<\/a><\/p>\n
\u5907\u6ce8: \u5f53STM32\u7684GPIO\u7aef\u53e3\u8bbe\u7f6e\u4e3a\u8f93\u51fa\u6a21\u5f0f\u65f6\uff0c\u6709\u4e09\u79cd\u901f\u5ea6\u53ef\u4ee5\u9009\u62e9\uff1a2MHz\u300110MHz\u548c50MHz\uff0c\u8fd9\u4e2a\u901f\u5ea6\u662f\u6307I\/O\u53e3\u9a71\u52a8\u7535\u8def\u7684\u901f\u5ea6\uff0c\u662f\u7528\u6765\u9009\u62e9 \u4e0d\u540c\u7684\u8f93\u51fa\u9a71\u52a8\u6a21\u5757\uff0c\u8fbe\u5230\u6700\u4f73\u7684\u566a\u58f0\u63a7\u5236\u548c\u964d\u4f4e\u529f\u8017\u7684\u76ee\u7684\u3002<\/p>\n
STM32 GPIO\u7aef\u53e3\u7684\u8f93\u51fa\u901f\u5ea6\u8bbe\u7f6e<\/a><\/p>\n
\u5907\u6ce8: \u5171\u67098\u79cd\u6a21\u5f0f\uff0c\u53ef\u4ee5\u901a\u8fc7\u7f16\u7a0b\u9009\u62e9\uff1a<\/p>\n
\n
\n
\u6d6e\u7a7a\u8f93\u5165<\/p>\n<\/li>\n
\n
\u5e26\u4e0a\u62c9\u8f93\u5165<\/p>\n<\/li>\n
\n
\u5e26\u4e0b\u62c9\u8f93\u5165<\/p>\n<\/li>\n
\n<\/li>\n<\/ol>\n
\u6a21\u62df<\/p>\n
\u8f93\u5165<\/p>\n
\n
\n
\u5f00\u6f0f\u8f93\u51fa\u2014\u2014(\u6b64\u6a21\u5f0f\u53ef\u5b9e\u73b0hotpower\u8bf4\u7684\u771f\u53cc\u5411IO)<\/p>\n<\/li>\n
\n
\u63a8\u633d\u8f93\u51fa<\/p>\n<\/li>\n
\n
\u590d\u7528\u529f\u80fd\u7684\u63a8\u633d\u8f93\u51fa<\/p>\n<\/li>\n
\n
\u590d\u7528\u529f\u80fd\u7684\u5f00\u6f0f\u8f93\u51fa<\/p>\n<\/li>\n<\/ol>\n
\u6a21\u5f0f7\u548c\u6a21\u5f0f8\u9700\u6839\u636e\u5177\u4f53\u7684\u590d\u7528\u529f\u80fd\u51b3\u5b9a\u3002<\/p>\n
void GPIO_Configuration(void)<\/p>\n
{<\/p>\n
GPIO_InitTypeDef GPIO_InitStructure;<\/p>\n
\/ Configure PA. as Output push-pull <\/em>\/<\/p>\n
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1;<\/p>\n
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;<\/p>\n
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;<\/p>\n
GPIO_Init(GPIOA, &GPIO_InitStructure);<\/p>\n
\/ Configure PA3,PA8\u00a0\u00a0as input floating (EXTI Line3 , EXTI Line8) <\/em>\/<\/p>\n
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_8;<\/p>\n
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;<\/p>\n
GPIO_Init(GPIOA, &GPIO_InitStructure);<\/p>\n
}<\/p>\n
(2) \u6253\u5f00 GPIOA \u7684\u65f6\u949f<\/strong><\/p>\n
, \u56e0\u4e3a STM32 \u662f\u4e00\u4e2a\u4f4e\u529f\u8017\u7684 MCU , \u6bcf\u4e00\u4e2a\u4f60\u4f7f\u7528\u7684\u5916\u56f4\u8bbe\u5907\u90fd\u9700\u8981\u5355\u72ec\u5f00\u542f\u65f6\u949f, \u5982\u679c\u4e0d\u5f00\u542f\u5c06\u4e0d\u80fd\u4f7f\u7528, \u8fd9\u4e2a\u4e5f\u662f\u5bf9\u4e8e STM32 \u521d\u5b66\u8005\u5bb9\u6613\u758f\u5ffd\u7684\u5730\u65b9<\/p>\n
\/ Enable GPIOA and AFIO clocks <\/em>\/<\/p>\n
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |<\/p>\n
RCC_APB2Periph_AFIO, ENABLE);<\/p>\n
STM32\u5171\u67095\u79cd\u65f6\u949f\u6e90\uff0c\u5176\u4e2d\u4e09\u79cd\u4e0d\u540c\u7684\u65f6\u949f\u6e90\u53ef\u7528\u4f5c\u4e3a\u9a71\u52a8\u7cfb\u7edf\u65f6\u949f\uff08SYSCLK\uff09\uff1b<\/p>\n
1\u3001HSI \u7531\u5185\u90e88MHz RC\u632f\u8361\u5668\u4ea7\u751f\uff0c\u5b83\u662f\u53ef\u4ee5\u76f4\u63a5\u7528\u6765\u4f5c\u4e3a\u7cfb\u7edf\u65f6\u949f\u6216\u7ecf2\u5206\u9891\u540e\u4f5c\u4e3aPLLSRC\u8f93\u5165\u3002<\/p>\n
HIS\u65f6\u949f\u9891\u7387\u5728\u51fa\u5382\u65f6\u88ab\u6821\u51c6\u57281%\uff0825\u00b0C\uff09\uff0c\u5728\u7cfb\u7edf\u590d\u4f4d\u65f6\uff0c\u5de5\u5382\u6821\u51c6\u503c\u4f1a\u88ab\u88c5\u8f7d\u5230\u65f6\u949f\u63a7\u5236\u5bc4\u5b58\u5668\u7684HISCAL[7..0] \u4f4d\u3002<\/p>\n
\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u66f4\u6539HISCAL[4..0]\u6765\u8c03\u6574HSI\u9891\u7387\u3002<\/p>\n
\u53e6\u5916\u65f6\u949f\u5bc4\u5b58\u5668\u4e2d\u6709\u4e00\u4e2aHSIRDY\u4f4d\u7528\u6765\u6307\u793aHSI RC\u662f\u4e0d\u7a33\u5b9a\u5de5\u4f5c\uff0c\u5728\u65f6\u949f\u542f\u8fc7\u540e\uff0c\u76f4\u5230\u8fd9\u4e2a\u6807\u5fd7\u4f4d\u7f6e\u88ab\u786c\u4ef6\u7f6e1\u540e\uff0cHSI RC\u65f6\u949f\u624d\u88ab\u8f93\u51fa\u3002<\/p>\n
HSI RC\u65f6\u949f\u8fd8\u53ef\u4ee5\u7528\u65f6\u949f\u5bc4\u5b58\u5668\u4e2d\u7684HSION\u4f4d\u6765\u542f\u52a8\u548c\u5173\u95ed\u3002<\/p>\n
HSI\u65f6\u949f\u540c\u65f6\u4e5f\u662fHSE\u6676\u4f53\u8361\u632f\u5668\u7684\u5907\u7528\u65f6\u949f\u6e90\u3002<\/p>\n
\u4f7f\u7528HSE\u65f6\u949f\uff0c\u7a0b\u5e8f\u8bbe\u7f6e\u65f6\u949f\u53c2\u6570\u6d41\u7a0b\uff1a<\/p>\n
1\u3001\u5c06RCC\u5bc4\u5b58\u5668\u91cd\u65b0\u8bbe\u7f6e\u4e3a\u9ed8\u8ba4\u503c\u00a0 \u00a0RCC_DeInit;<\/p>\n
2\u3001\u6253\u5f00\u5916\u90e8\u9ad8\u901f\u65f6\u949f\u6676\u632fHSE\u00a0 \u00a0 RCC_HSEConfig(RCC_HSE_ON);<\/p>\n
3\u3001\u7b49\u5f85\u5916\u90e8\u9ad8\u901f\u65f6\u949f\u6676\u632f\u5de5\u4f5c\u00a0 \u00a0 HSEStartUpStatus = RCC_Wait<\/p>\n
For<\/p>\n
HSEStartUp();<\/p>\n
4\u3001\u8bbe\u7f6eAHB\u65f6\u949f\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0RCC_HCLKConfig;<\/p>\n
5\u3001\u8bbe\u7f6e\u9ad8\u901fAHB\u65f6\u949f\u00a0 \u00a0\u00a0\u00a0RCC_PCLK2Config;<\/p>\n
6\u3001\u8bbe\u7f6e\u4f4e\u901f\u901fAHB\u65f6\u949f\u00a0 \u00a0RCC_PCLK1Config;<\/p>\n
7\u3001\u8bbe\u7f6ePLL\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0RCC_PLLConfig;<\/p>\n
8\u3001\u6253\u5f00PLL\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0RCC_PLLCmd(ENABLE);<\/p>\n
9\u3001\u7b49\u5f85PLL\u5de5\u4f5c\u00a0 \u00a0while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)<\/p>\n
10\u3001\u8bbe\u7f6e\u7cfb\u7edf\u65f6\u949f\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0RCC_SYSCLKConfig;<\/p>\n
11\u3001\u5224\u65ad\u662f\u5426PLL\u662f\u7cfb\u7edf\u65f6\u949f\u00a0 \u00a0\u00a0\u00a0while(RCC_GetSYSCLKSource() != 0x08)<\/p>\n
12\u3001\u6253\u5f00\u8981\u4f7f\u7528\u7684\u5916\u8bbe\u65f6\u949f\u00a0 \u00a0 RCC_APB2PeriphClockCmd()\/RCC_APB1PeriphClockCmd()<\/p>\n
\u5177\u4f53\u8bbe\u7f6e\u8bf7\u53c2\u8003\u4e0b\u9762\u7684\u6587\u7ae0<\/p>\n
STM32\u65f6\u949f\u7cfb\u7edf\u4e0e\u8f6f\u4ef6\u914d\u7f6e<\/a><\/p>\n
STM32\u7684\u65f6\u949f\u7cfb\u7edf\u5206\u6790<\/a><\/p>\n
STM32 \u7684\u65f6\u949f\u4e0eRTC<\/a><\/p>\n
(3) \u8bbe\u7f6e\u5916\u90e8\u4e2d\u65ad<\/strong><\/p>\n
, \u6240\u6709\u7684 GPIO \u53e3\u90fd\u53ef\u4ee5\u4f5c\u4e3a\u5916\u90e8\u4e2d\u65ad\u6e90. \u5177\u4f53\u53ef\u4ee5\u53c2\u8003\u4e0b\u9762\u8fd9\u7bc7\u6587\u7ae0.<\/p>\n
STM32\u4e2d\u5916\u90e8\u4e2d\u65ad\u4e0e\u5916\u90e8\u4e8b\u4ef6<\/a><\/p>\n
\/ Connect EXTI Line3 to PA.3 <\/em>\/<\/p>\n
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource3);<\/p>\n
\/ Configure EXTI Line3 to generate an interrupt on falling edge <\/em>\/<\/p>\n
EXTI_InitStructure.EXTI_Line = EXTI_Line3;<\/p>\n
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;<\/p>\n
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;<\/p>\n
EXTI_InitStructure.EXTI_LineCmd = ENABLE;<\/p>\n
EXTI_Init(&EXTI_InitStructure);<\/p>\n
\u540c\u6837\u4e0d\u8981\u5fd8\u8bb0\u6253\u5f00\u65f6\u949f, \u6211\u4eec\u5728\u6253\u5f00 PA \u53e3\u7684\u65f6\u5019\u5df2\u7ecf\u52a0\u4e0a\u4e86 RCC_APB2Periph_AFIO, \u8fd9\u91cc\u518d\u63d0\u9192\u5927\u5bb6\u4e00\u4e0b.<\/p>\n
\/ Enable GPIOA and AFIO clocks <\/em>\/<\/p>\n
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |<\/p>\n
RCC_APB2Periph_AFIO, ENABLE);<\/p>\n
\u6700\u540e\u5c31\u662f\u7f16\u5199\u5916\u90e8\u4e2d\u65ad\u5165\u53e3\u51fd\u6570.<\/p>\n
void EXTI3_IRQHandler(void)<\/p>\n
{<\/p>\n
int i;<\/p>\n
if(EXTI_GetITStatus(EXTI_Line9) != RESET)<\/p>\n
{<\/p>\n
GPIO_SetBits(GPIOA,GPIO_Pin_0);<\/p>\n
GPIO_SetBits(GPIOA,GPIO_Pin_1);<\/p>\n
for(i=0;i<=8000000;i++);<\/p>\n
GPIO_ResetBits(GPIOA,GPIO_Pin_0);<\/p>\n
GPIO_ResetBits(GPIOA,GPIO_Pin_1);<\/p>\n
for(i=0;i<=1000000;i++)<\/p>\n
\/ Clear the EXTI line 3 pending bit <\/em>\/<\/p>\n
EXTI_ClearITPendingBit(EXTI_Line3);<\/p>\n
}<\/p>\n
}<\/p>\n
\u4e0d\u8981\u5fd8\u8bb0\u5728\u4e2d\u65ad\u51fd\u6570\u5904\u7406\u5b8c\u6210\u540e\u6e05\u6389\u6807\u5fd7\u4f4d,\u4e0d\u7136\u4f1a\u4e0d\u505c\u7684\u8fdb\u5165\u4e2d\u65ad.<\/p>\n
(4) \u7f16\u8bd1\u4e0e\u8c03\u8bd5<\/strong><\/p>\n
\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u6240\u6709\u7a0b\u5e8f\u7f16\u5199\u90e8\u4efd, \u63a5\u4e0b\u6765\u5c31\u662f\u5c06\u5de5\u7a0b\u7f16\u8bd1\u6210\u529f\u540e\u4e0b\u8f7d\u5230\u6211\u4eec\u7684 Mini-STM32 \u5f00\u53d1\u677f\u4e2d\u8fdb\u884c\u8c03\u8bd5\u548c\u4eff\u771f.<\/p>\n
\u5982\u679c\u770b\u5230 LED \u6709\u89c4\u5f8b\u7684\u70b9\u4eae\u548c\u7184\u706d, \u6309\u4e0b<\/p>\n
\u6309\u94ae<\/p>\n
\u540e LED \u5148\u662f\u4e00\u8d77\u7184\u706d, \u5728\u4e00\u8d77\u70b9\u4eae, \u7136\u540e\u6062\u590d\u6709\u89c4\u5f8b\u7684\u70b9\u4eae\u8fd9\u4e2a\u8fc7\u7a0b, \u8bf4\u660e\u6211\u4eec\u5df2\u7ecf\u8fbe\u5230\u6211\u4eec\u7684\u8bbe\u8ba1\u76ee\u6807.<\/p>\n
\n
\u603b\u7ed3: \u6211\u4eec\u5b66\u4e60\u5b8c\u4e86\u8fd9\u7bc7\u6559\u7a0b\u4e4b\u540e, \u76f8\u4fe1\u5927\u5bb6\u5bf9\u4e0b\u9762\u51e0\u4e2a\u65b9\u9762\u7684\u5185\u5bb9\u5df2\u7ecf\u638c\u63e1\u4e86.\n<\/span>\n* GPIO \u7684\u8bbe\u7f6e<\/p>\n
\n
STM32 GPIO \u7684\u4f18\u52bf<\/li>\n
STM32 \u7684\u65f6\u949f\u7ed3\u6784<\/li>\n
\u5916\u90e8\u4e2d\u65ad\u7684\u914d\u7f6e<\/li>\n
\u5916\u90e8\u4e2d\u65ad\u548c\u5916\u90e8\u4e8b\u4ef6\u7684\u533a\u522b<\/span><\/strong><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"
\u8fd9\u4e2a\u7ae0\u8282\u6211\u4eec\u5c06\u5b66\u4e60\u6700\u57fa\u672c\u7684 STM32 \u7684 GPIO \u7684\u5e94\u7528. \u6211\u4eec\u5c06\u5206\u4e3a\u4e24\u4e2a\u7ae0\u8282\u6765\u5b66\u4e60. \u7b2c\u4e00\u90e8\u4efd: GPIO \u7684\u57fa\u672c\u5e94\u7528\u548c IO \u53e3\u7684\u914d\u7f6e \u7b2c\u4e8c\u90e8\u4efd: \u5916\u90e8\u4e2d\u65ad\u7684\u4f7f\u7528 1: \u8bbe\u8ba1\u8981\u6c42: \u5f00\u53d1\u677f\u4e0a\u6709...<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[53,41,46,51],"class_list":["post-82","post","type-post","status-publish","format-standard","hentry","category-scm","tag-gpio","tag-stm32","tag-46","tag-51"],"_links":{"self":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/82","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/comments?post=82"}],"version-history":[{"count":2,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/82\/revisions"}],"predecessor-version":[{"id":111,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/82\/revisions\/111"}],"wp:attachment":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/media?parent=82"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/categories?post=82"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/tags?post=82"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}