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以下内容在stm32f4xx_gpio.h内

/** @defgroup GPIO_Alternat_function_selection_define

* @{

/**

* @brief AF 0 selection

#define GPIO_AF_RTC_50Hz ((uint8_t)0x00) /* RTC_50Hz Alternate Function mapping */

#define GPIO_AF_MCO ((uint8_t)0x00) /* MCO (MCO1 and MCO2) Alternate Function mapping */

#define GPIO_AF_TAMPER ((uint8_t)0x00) /* TAMPER (TAMPER_1 and TAMPER_2) Alternate Function mapping */

#define GPIO_AF_SWJ ((uint8_t)0x00) /* SWJ (SWD and JTAG) Alternate Function mapping */

#define GPIO_AF_TRACE ((uint8_t)0x00) /* TRACE Alternate Function mapping */

#if defined (STM32F446xx)

#define GPIO_AF0_TIM2 ((uint8_t)0x00) /* TIM2 Alternate Function mapping */

#endif /* STM32F446xx */

/**

* @brief AF 1 selection

#define GPIO_AF_TIM1 ((uint8_t)0x01) /* TIM1 Alternate Function mapping */

#define GPIO_AF_TIM2 ((uint8_t)0x01) /* TIM2 Alternate Function mapping */

/**

* @brief AF 2 selection

#define GPIO_AF_TIM3 ((uint8_t)0x02) /* TIM3 Alternate Function mapping */

#define GPIO_AF_TIM4 ((uint8_t)0x02) /* TIM4 Alternate Function mapping */

#define GPIO_AF_TIM5 ((uint8_t)0x02) /* TIM5 Alternate Function mapping */

/**

* @brief AF 3 selection

#define GPIO_AF_TIM8 ((uint8_t)0x03) /* TIM8 Alternate Function mapping */

#define GPIO_AF_TIM9 ((uint8_t)0x03) /* TIM9 Alternate Function mapping */

#define GPIO_AF_TIM10 ((uint8_t)0x03) /* TIM10 Alternate Function mapping */

#define GPIO_AF_TIM11 ((uint8_t)0x03) /* TIM11 Alternate Function mapping */

#if defined (STM32F446xx)

#define GPIO_AF3_CEC ((uint8_t)0x03) /* CEC Alternate Function mapping */

#endif /* STM32F446xx */

/**

* @brief AF 4 selection

#define GPIO_AF_I2C1 ((uint8_t)0x04) /* I2C1 Alternate Function mapping */

#define GPIO_AF_I2C2 ((uint8_t)0x04) /* I2C2 Alternate Function mapping */

#define GPIO_AF_I2C3 ((uint8_t)0x04) /* I2C3 Alternate Function mapping */

#if defined (STM32F446xx)

#define GPIO_AF4_CEC ((uint8_t)0x04) /* CEC Alternate Function mapping */

#define GPIO_AF_FMPI2C ((uint8_t)0x04) /* FMPI2C Alternate Function mapping */

#endif /* STM32F446xx */

/**

* @brief AF 5 selection

#define GPIO_AF_SPI1 ((uint8_t)0x05) /* SPI1/I2S1 Alternate Function mapping */

#define GPIO_AF_SPI2 ((uint8_t)0x05) /* SPI2/I2S2 Alternate Function mapping */

#define GPIO_AF5_SPI3 ((uint8_t)0x05) /* SPI3/I2S3 Alternate Function mapping (Only for STM32F411xE Devices) */

#define GPIO_AF_SPI4 ((uint8_t)0x05) /* SPI4/I2S4 Alternate Function mapping */

#define GPIO_AF_SPI5 ((uint8_t)0x05) /* SPI5 Alternate Function mapping */

#define GPIO_AF_SPI6 ((uint8_t)0x05) /* SPI6 Alternate Function mapping */

/**

* @brief AF 6 selection

#define GPIO_AF_SPI3 ((uint8_t)0x06) /* SPI3/I2S3 Alternate Function mapping */

#define GPIO_AF6_SPI2 ((uint8_t)0x06) /* SPI2 Alternate Function mapping (Only for STM32F411xE Devices) */

#define GPIO_AF6_SPI4 ((uint8_t)0x06) /* SPI4 Alternate Function mapping (Only for STM32F411xE Devices) */

#define GPIO_AF6_SPI5 ((uint8_t)0x06) /* SPI5 Alternate Function mapping (Only for STM32F411xE Devices) */

#define GPIO_AF_SAI1 ((uint8_t)0x06) /* SAI1 Alternate Function mapping */

/**

* @brief AF 7 selection

#define GPIO_AF_USART1 ((uint8_t)0x07) /* USART1 Alternate Function mapping */

#define GPIO_AF_USART2 ((uint8_t)0x07) /* USART2 Alternate Function mapping */

#define GPIO_AF_USART3 ((uint8_t)0x07) /* USART3 Alternate Function mapping */

#define GPIO_AF7_SPI3 ((uint8_t)0x07) /* SPI3/I2S3ext Alternate Function mapping */

/**

* @brief AF 7 selection Legacy

#define GPIO_AF_I2S3ext GPIO_AF7_SPI3

/**

* @brief AF 8 selection

#define GPIO_AF_UART4 ((uint8_t)0x08) /* UART4 Alternate Function mapping */

#define GPIO_AF_UART5 ((uint8_t)0x08) /* UART5 Alternate Function mapping */

#define GPIO_AF_USART6 ((uint8_t)0x08) /* USART6 Alternate Function mapping */

#define GPIO_AF_UART7 ((uint8_t)0x08) /* UART7 Alternate Function mapping */

#define GPIO_AF_UART8 ((uint8_t)0x08) /* UART8 Alternate Function mapping */

#if defined (STM32F446xx)

#define GPIO_AF8_SAI2 ((uint8_t)0x08) /* SAI2 Alternate Function mapping */

#define GPIO_AF_SPDIF ((uint8_t)0x08) /* SPDIF Alternate Function mapping */

#endif /* STM32F446xx */

/**

* @brief AF 9 selection

#define GPIO_AF_CAN1 ((uint8_t)0x09) /* CAN1 Alternate Function mapping */

#define GPIO_AF_CAN2 ((uint8_t)0x09) /* CAN2 Alternate Function mapping */

#define GPIO_AF_TIM12 ((uint8_t)0x09) /* TIM12 Alternate Function mapping */

#define GPIO_AF_TIM13 ((uint8_t)0x09) /* TIM13 Alternate Function mapping */

#define GPIO_AF_TIM14 ((uint8_t)0x09) /* TIM14 Alternate Function mapping */

#define GPIO_AF9_I2C2 ((uint8_t)0x09) /* I2C2 Alternate Function mapping (Only for STM32F401xx/STM32F411xE Devices) */

#define GPIO_AF9_I2C3 ((uint8_t)0x09) /* I2C3 Alternate Function mapping (Only for STM32F401xx/STM32F411xE Devices) */

#if defined (STM32F446xx)

#define GPIO_AF9_SAI2 ((uint8_t)0x09) /* SAI2 Alternate Function mapping */

#endif /* STM32F446xx */

#define GPIO_AF9_LTDC ((uint8_t)0x09) /* LTDC Alternate Function mapping */

#if defined (STM32F446xx)

#define GPIO_AF9_QUADSPI ((uint8_t)0x09) /* QuadSPI Alternate Function mapping */

#endif /* STM32F446xx */

/**

* @brief AF 10 selection

#define GPIO_AF_OTG_FS ((uint8_t)0xA) /* OTG_FS Alternate Function mapping */

#define GPIO_AF_OTG_HS ((uint8_t)0xA) /* OTG_HS Alternate Function mapping */

#if defined (STM32F446xx)

#define GPIO_AF10_SAI2 ((uint8_t)0x0A) /* SAI2 Alternate Function mapping */

#endif /* STM32F446xx */

#if defined (STM32F446xx)

#define GPIO_AF10_QUADSPI ((uint8_t)0x0A) /* QuadSPI Alternate Function mapping */

#endif /* STM32F446xx */

/**

* @brief AF 11 selection

#define GPIO_AF_ETH ((uint8_t)0x0B) /* ETHERNET Alternate Function mapping */

/**

* @brief AF 12 selection

#if defined (STM32F40_41xxx)

#define GPIO_AF_FSMC ((uint8_t)0xC) /* FSMC Alternate Function mapping */

#endif /* STM32F40_41xxx */

#if defined (STM32F427_437xx) || defined (STM32F429_439xx) || defined (STM32F446xx)

#define GPIO_AF_FMC ((uint8_t)0xC) /* FMC Alternate Function mapping */

#endif /* STM32F427_437xx || STM32F429_439xx || STM32F446xx */

#define GPIO_AF_OTG_HS_FS ((uint8_t)0xC) /* OTG HS configured in FS, Alternate Function mapping */

#define GPIO_AF_SDIO ((uint8_t)0xC) /* SDIO Alternate Function mapping */

/**

* @brief AF 13 selection

#define GPIO_AF_DCMI ((uint8_t)0x0D) /* DCMI Alternate Function mapping */

/**

* @brief AF 14 selection

#define GPIO_AF_LTDC ((uint8_t)0x0E) /* LCD-TFT Alternate Function mapping */

/**

* @brief AF 15 selection

#define GPIO_AF_EVENTOUT ((uint8_t)0x0F) /* EVENTOUT Alternate Function mapping */

#if defined (STM32F40_41xxx)

#define IS_GPIO_AF(AF) (((AF) == GPIO_AF_RTC_50Hz) || ((AF) == GPIO_AF_TIM14) || \

((AF) == GPIO_AF_MCO) || ((AF) == GPIO_AF_TAMPER) || \

((AF) == GPIO_AF_SWJ) || ((AF) == GPIO_AF_TRACE) || \

((AF) == GPIO_AF_TIM1) || ((AF) == GPIO_AF_TIM2) || \

((AF) == GPIO_AF_TIM3) || ((AF) == GPIO_AF_TIM4) || \

((AF) == GPIO_AF_TIM5) || ((AF) == GPIO_AF_TIM8) || \

((AF) == GPIO_AF_I2C1) || ((AF) == GPIO_AF_I2C2) || \

((AF) == GPIO_AF_I2C3) || ((AF) == GPIO_AF_SPI1) || \

((AF) == GPIO_AF_SPI2) || ((AF) == GPIO_AF_TIM13) || \

((AF) == GPIO_AF_SPI3) || ((AF) == GPIO_AF_TIM14) || \

((AF) == GPIO_AF_USART1) || ((AF) == GPIO_AF_USART2) || \

((AF) == GPIO_AF_USART3) || ((AF) == GPIO_AF_UART4) || \

((AF) == GPIO_AF_UART5) || ((AF) == GPIO_AF_USART6) || \

((AF) == GPIO_AF_CAN1) || ((AF) == GPIO_AF_CAN2) || \

((AF) == GPIO_AF_OTG_FS) || ((AF) == GPIO_AF_OTG_HS) || \

((AF) == GPIO_AF_ETH) || ((AF) == GPIO_AF_OTG_HS_FS) || \

((AF) == GPIO_AF_SDIO) || ((AF) == GPIO_AF_DCMI) || \

((AF) == GPIO_AF_EVENTOUT) || ((AF) == GPIO_AF_FSMC))

#endif /* STM32F40_41xxx */

#if defined (STM32F401xx)

#define IS_GPIO_AF(AF) (((AF) == GPIO_AF_RTC_50Hz) || ((AF) == GPIO_AF_TIM14) || \

((AF) == GPIO_AF_MCO) || ((AF) == GPIO_AF_TAMPER) || \

((AF) == GPIO_AF_SWJ) || ((AF) == GPIO_AF_TRACE) || \

((AF) == GPIO_AF_TIM1) || ((AF) == GPIO_AF_TIM2) || \

((AF) == GPIO_AF_TIM3) || ((AF) == GPIO_AF_TIM4) || \

((AF) == GPIO_AF_TIM5) || ((AF) == GPIO_AF_TIM8) || \

((AF) == GPIO_AF_I2C1) || ((AF) == GPIO_AF_I2C2) || \

((AF) == GPIO_AF_I2C3) || ((AF) == GPIO_AF_SPI1) || \

((AF) == GPIO_AF_SPI2) || ((AF) == GPIO_AF_TIM13) || \

((AF) == GPIO_AF_SPI3) || ((AF) == GPIO_AF_TIM14) || \

((AF) == GPIO_AF_USART1) || ((AF) == GPIO_AF_USART2) || \

((AF) == GPIO_AF_SDIO) || ((AF) == GPIO_AF_USART6) || \

((AF) == GPIO_AF_OTG_FS) || ((AF) == GPIO_AF_OTG_HS) || \

((AF) == GPIO_AF_EVENTOUT) || ((AF) == GPIO_AF_SPI4))

#endif /* STM32F401xx */

#if defined (STM32F411xE)

#define IS_GPIO_AF(AF) (((AF) < 16) && ((AF) != 11) && ((AF) != 13) && ((AF) != 14))

#endif /* STM32F411xE */

#if defined (STM32F427_437xx) || defined (STM32F429_439xx)

#define IS_GPIO_AF(AF) (((AF) == GPIO_AF_RTC_50Hz) || ((AF) == GPIO_AF_TIM14) || \

((AF) == GPIO_AF_MCO) || ((AF) == GPIO_AF_TAMPER) || \

((AF) == GPIO_AF_SWJ) || ((AF) == GPIO_AF_TRACE) || \

((AF) == GPIO_AF_TIM1) || ((AF) == GPIO_AF_TIM2) || \

((AF) == GPIO_AF_TIM3) || ((AF) == GPIO_AF_TIM4) || \

((AF) == GPIO_AF_TIM5) || ((AF) == GPIO_AF_TIM8) || \

((AF) == GPIO_AF_I2C1) || ((AF) == GPIO_AF_I2C2) || \

((AF) == GPIO_AF_I2C3) || ((AF) == GPIO_AF_SPI1) || \

((AF) == GPIO_AF_SPI2) || ((AF) == GPIO_AF_TIM13) || \

((AF) == GPIO_AF_SPI3) || ((AF) == GPIO_AF_TIM14) || \

((AF) == GPIO_AF_USART1) || ((AF) == GPIO_AF_USART2) || \

((AF) == GPIO_AF_USART3) || ((AF) == GPIO_AF_UART4) || \

((AF) == GPIO_AF_UART5) || ((AF) == GPIO_AF_USART6) || \

((AF) == GPIO_AF_CAN1) || ((AF) == GPIO_AF_CAN2) || \

((AF) == GPIO_AF_OTG_FS) || ((AF) == GPIO_AF_OTG_HS) || \

((AF) == GPIO_AF_ETH) || ((AF) == GPIO_AF_OTG_HS_FS) || \

((AF) == GPIO_AF_SDIO) || ((AF) == GPIO_AF_DCMI) || \

((AF) == GPIO_AF_EVENTOUT) || ((AF) == GPIO_AF_SPI4) || \

((AF) == GPIO_AF_SPI5) || ((AF) == GPIO_AF_SPI6) || \

((AF) == GPIO_AF_UART7) || ((AF) == GPIO_AF_UART8) || \

((AF) == GPIO_AF_FMC) || ((AF) == GPIO_AF_SAI1) || \

((AF) == GPIO_AF_LTDC))

#endif /* STM32F427_437xx || STM32F429_439xx */

#if defined (STM32F446xx)

#define IS_GPIO_AF(AF) (((AF) < 16) && ((AF) != 11) && ((AF) != 14))

#endif /* STM32F446xx */

/**

* @}

/** @defgroup GPIO_Legacy

* @{

#define GPIO_Mode_AIN GPIO_Mode_AN

#define GPIO_AF_OTG1_FS GPIO_AF_OTG_FS

#define GPIO_AF_OTG2_HS GPIO_AF_OTG_HS

#define GPIO_AF_OTG2_FS GPIO_AF_OTG_HS_FS

/**

* @}

/**

* @}

关键字：stm32f429 引脚复用引用地址：stm32f429引脚复用

上一篇：初探STM32 SPI2中断接受多组数据的处理方式
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推荐阅读最新更新时间：2024-03-16 16:21

STM32F429 >> 19. RTC_实时时钟（Code）

配置及读取日期和时间此工程没有读取亚秒值。若想让时钟断电后持续计时，则不要使能RTC_Config() 函数中的后备域访问。 bsp_rtc.h /** ****************************************************************************** * @file bsp_rtc.h * @author Waao * @version V1.0.0 * @date 17-Feb-2019 * @brief This file contains some board support package's definition for t

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第22章 STM32F429的SysTick实现多组软件定时器

22.1 初学者重要提示比通用定时器要容易掌握很多，因为嘀嗒定时器的功能比较的单一，根据ARM的说法，此定时器就是专门为RTOS的系统时钟节拍而设计。本章节为大家讲解的多组软件定时器实现方案非常实用，建议初学者熟练掌握。 22.2 Systick基础知识关于滴答定时器，初学者仅需了解到以下几点知识就够了。 Systick是Cortex-M4内核自带的组件，其它几个常用的硬件异常HardFault，SVC和PendSV也都是是内核自带的，其中Systick，SVC和PendSV的中断优先级是可编程的，跟SPI中断、ADC中断、UART中断等一样，都在同一个NVIC下配置的。而HardFault是不可编程的，且优先级

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第22章 <font color='red'>STM32F429</font>的SysTick实现多组软件定时器

STM32F429驱动外部SDRAM

STM32F429的一个很大优势就是可以直接驱动SDRAM，这样一下子就可以外扩可观的运存，很诱惑。这里用到的SDRAM 为W9825G6KH, 256Mbit， 32MByte 配置CubeMX 这里不展开这里面的数值的具体计算过程，主要是按照手册来算的，感兴趣的可以网上寻找，有很多相关的资料。 SDRAM 初始化，SDRAM不像SRAM配置好了就可以用，他需要初始化 #include stm32f4xx_hal.h extern SDRAM_HandleTypeDef hsdram1; #define SDRAM_MODEREG_BURST_LENGTH_1 ((uint16_t)0x0000)

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<font color='red'>STM32F429</font>驱动外部SDRAM

STM32F429 >> 5. 按键控制LED 开关

本工程板级支持包文件适用于野火stm32f429 开发板。本工程中涉及bsp_led.c, bsp_led.h 等文件，请前往STM32F429 4. 使用固件库点亮LED进行查看 bsp_key.c /** ****************************************************************************** * @file bsp_key.c * @author Waao * @version V1.0.0 * @date 20-Dec-2018 * @brief This file contains some board support pack

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STM32F429之SysTick系统定时器

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stm32f429 中通过基本定时器中断控制LED灯亮一秒、灭一秒

stm32f429中基本定时器有两个，通用定时器有十个，高级定时器有两个。其中基本定时器为TIM6和TIM7。此处通过编写TIM7定时中断控制LED灯亮灭，TIM6与之类似。首先可以新建一个.c 和.h 文件，在.c文件中进行TIM7函数定义等，如下图所示： #include bsp_tim_basic.h static void BASIC_TIMx_Mode_Config() { RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7,ENABLE);//开启时钟 TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;//结构体

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stm32f429固件库之SPI读写FLASH

SPI——串行外设总线（Seriel Peripheral Interface），全双工通信，4条线：1、SCK（Seriel Clock，时钟信号线——用于同步通信），由主机产生，两个设备通信时，速率受限于低速设备；2、SS（也称NSS、CS，设备选择信号线，也是片选信号线），每个设备通过一条独有的CS线连接到主机，当CS拉低时，表示被选中；3、MISO（Master Input Slave Output,主机输入从机输出）；4、MOSI（Master Input Slave Output,主机输出从机输入）。SCK、MISO、MOSI这三条线各个从机共用，CS线为每个从机独有连接主机。 SPI协议层：通信的起始信号：CS由高变

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STM32F429之嵌套向量中断控制器NVIC

外部中断/事件控制器由20个产生事件/中断请求的边沿检测器组成，对于其它产品，则有19个能产生事件/中断请求的边沿检测器。每个输入线可以独立地配置输入类型(脉冲或挂起)和对应的触发事件(上升沿或下降沿或者双边沿都触发)。每个输入线都可以独立地被屏蔽。挂起寄存器保持着状态线的中断请求。主要特性 EXTI控制器的主要特性如下： ● 每个中断/事件都有独立的触发和屏蔽 ● 每个中断线都有专用的状态位 ● 支持多达20个软件的中断/事件请求 ● 检测脉冲宽度低于APB2时钟宽度的外部信号。参见数据手册中电气特性部分的相关参数。 STM32中有两个优先级的概念：抢占式优先级和响应优先级(也叫副优先级)。他们的特性是： 1：高

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