當(dāng)前位置：首頁 > 编程资源 > 编程问答 >内容正文

编程问答

STM32F7xx —— 输出

發(fā)布時間：2023/12/20 编程问答 32 豆豆

生活随笔收集整理的這篇文章主要介紹了 STM32F7xx —— 输出小編覺得挺不錯的,現(xiàn)在分享給大家,幫大家做個參考.

STM32F7xx —— 輸出

一、幾個重要的IO口操作函數(shù)

二、幾個重要的結(jié)構(gòu)

三、封裝兩個GPIO初始化函數(shù)（普通GPIO，復(fù)用GPIO）

四、輸出接口設(shè)計

一、幾個重要的IO口操作函數(shù)

HAL_GPIO_Init(GPIO_TypeDef ?*GPIOx, GPIO_InitTypeDef *GPIO_Init);? // GPIO初始化HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState); // 輸出高低電平GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin); // 讀IO口電平void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin); // 電平取反

二、幾個重要的結(jié)構(gòu)

// GPIO口 GPIOA,GPIOB,GPIOC,GPIOD,GPIOE,GPIOF,GPIOG,GPIOH,GPIOI typedef struct {__IO uint32_t MODER; /*!< GPIO port mode register, Address offset: 0x00 */__IO uint32_t OTYPER; /*!< GPIO port output type register, Address offset: 0x04 */__IO uint32_t OSPEEDR; /*!< GPIO port output speed register, Address offset: 0x08 */__IO uint32_t PUPDR; /*!< GPIO port pull-up/pull-down register, Address offset: 0x0C */__IO uint32_t IDR; /*!< GPIO port input data register, Address offset: 0x10 */__IO uint32_t ODR; /*!< GPIO port output data register, Address offset: 0x14 */__IO uint32_t BSRR; /*!< GPIO port bit set/reset register, Address offset: 0x18 */__IO uint32_t LCKR; /*!< GPIO port configuration lock register, Address offset: 0x1C */__IO uint32_t AFR[2]; /*!< GPIO alternate function registers, Address offset: 0x20-0x24 */ } GPIO_TypeDef; // GPIO引腳，模式，上下拉，速度，復(fù)用等 typedef struct {uint32_t Pin; /*!< Specifies the GPIO pins to be configured.This parameter can be any value of @ref GPIO_pins_define */uint32_t Mode; /*!< Specifies the operating mode for the selected pins.This parameter can be a value of @ref GPIO_mode_define */uint32_t Pull; /*!< Specifies the Pull-up or Pull-Down activation for the selected pins.This parameter can be a value of @ref GPIO_pull_define */uint32_t Speed; /*!< Specifies the speed for the selected pins.This parameter can be a value of @ref GPIO_speed_define */uint32_t Alternate; /*!< Peripheral to be connected to the selected pins. This parameter can be a value of @ref GPIO_Alternate_function_selection */ }GPIO_InitTypeDef; // GPIO引腳 #define GPIO_PIN_0 ((uint16_t)0x0001U) /* Pin 0 selected */ #define GPIO_PIN_1 ((uint16_t)0x0002U) /* Pin 1 selected */ #define GPIO_PIN_2 ((uint16_t)0x0004U) /* Pin 2 selected */ #define GPIO_PIN_3 ((uint16_t)0x0008U) /* Pin 3 selected */ #define GPIO_PIN_4 ((uint16_t)0x0010U) /* Pin 4 selected */ #define GPIO_PIN_5 ((uint16_t)0x0020U) /* Pin 5 selected */ #define GPIO_PIN_6 ((uint16_t)0x0040U) /* Pin 6 selected */ #define GPIO_PIN_7 ((uint16_t)0x0080U) /* Pin 7 selected */ #define GPIO_PIN_8 ((uint16_t)0x0100U) /* Pin 8 selected */ #define GPIO_PIN_9 ((uint16_t)0x0200U) /* Pin 9 selected */ #define GPIO_PIN_10 ((uint16_t)0x0400U) /* Pin 10 selected */ #define GPIO_PIN_11 ((uint16_t)0x0800U) /* Pin 11 selected */ #define GPIO_PIN_12 ((uint16_t)0x1000U) /* Pin 12 selected */ #define GPIO_PIN_13 ((uint16_t)0x2000U) /* Pin 13 selected */ #define GPIO_PIN_14 ((uint16_t)0x4000U) /* Pin 14 selected */ #define GPIO_PIN_15 ((uint16_t)0x8000U) /* Pin 15 selected */ // GPIO模式輸入推挽輸出開漏輸出推挽復(fù)用開漏復(fù)用 #define GPIO_MODE_INPUT ((uint32_t)0x00000000U) /*!< Input Floating Mode */ #define GPIO_MODE_OUTPUT_PP ((uint32_t)0x00000001U) /*!< Output Push Pull Mode */ #define GPIO_MODE_OUTPUT_OD ((uint32_t)0x00000011U) /*!< Output Open Drain Mode */ #define GPIO_MODE_AF_PP ((uint32_t)0x00000002U) /*!< Alternate Function Push Pull Mode */ #define GPIO_MODE_AF_OD ((uint32_t)0x00000012U) /*!< Alternate Function Open Drain Mode */ // GPIO速度低速中速高速極速 #define GPIO_SPEED_FREQ_LOW ((uint32_t)0x00000000U) /*!< Low speed */ #define GPIO_SPEED_FREQ_MEDIUM ((uint32_t)0x00000001U) /*!< Medium speed */ #define GPIO_SPEED_FREQ_HIGH ((uint32_t)0x00000002U) /*!< Fast speed */ #define GPIO_SPEED_FREQ_VERY_HIGH ((uint32_t)0x00000003U) /*!< High speed */ // GPIO上下拉無上下拉上拉下拉 #define GPIO_NOPULL ((uint32_t)0x00000000U) /*!< No Pull-up or Pull-down activation */ #define GPIO_PULLUP ((uint32_t)0x00000001U) /*!< Pull-up activation */ #define GPIO_PULLDOWN ((uint32_t)0x00000002U) /*!< Pull-down activation */ // GPIO引腳高低電平 typedef enum {GPIO_PIN_RESET = 0,GPIO_PIN_SET }GPIO_PinState;

三、封裝兩個GPIO初始化函數(shù)（普通GPIO，復(fù)用GPIO）

// 這里只貼出代碼片段，封裝兩個接口，一個普通GPIO初始化，一個帶復(fù)用功能。 #define GPIO_CLK_ENABLE() do{ \__HAL_RCC_GPIOA_CLK_ENABLE(); \__HAL_RCC_GPIOB_CLK_ENABLE(); \__HAL_RCC_GPIOC_CLK_ENABLE(); \__HAL_RCC_GPIOD_CLK_ENABLE(); \__HAL_RCC_GPIOE_CLK_ENABLE(); \__HAL_RCC_GPIOF_CLK_ENABLE(); \__HAL_RCC_GPIOG_CLK_ENABLE(); \__HAL_RCC_GPIOH_CLK_ENABLE(); \__HAL_RCC_GPIOI_CLK_ENABLE(); \ } while(0);void GPIOConfig(GPIO_TypeDef *gpio, uint32_t pin, uint32_t mode, uint32_t pull) {GPIO_InitTypeDef GPIO_InitStructure;GPIO_CLK_ENABLE();GPIO_InitStructure.Pin = pin;GPIO_InitStructure.Mode = mode;GPIO_InitStructure.Pull = pull;GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;HAL_GPIO_Init(gpio, &GPIO_InitStructure); }void GPIOConfigExt(GPIO_TypeDef *gpio, uint32_t pin, uint32_t mode, uint32_t pull, uint32_t alternate) {GPIO_InitTypeDef GPIO_InitStructure;GPIO_CLK_ENABLE();GPIO_InitStructure.Pin = pin;GPIO_InitStructure.Mode = mode;GPIO_InitStructure.Pull = pull;GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;GPIO_InitStructure.Alternate = alternate;HAL_GPIO_Init(gpio, &GPIO_InitStructure); }

四、輸出接口設(shè)計

為了靈活使用，我們將輸出的有效電平設(shè)置成可配置。

// 配置的有效電平初始低電平有效高電平有效 typedef enum {OUTPUT_INIT_IS_ACTIVE = 0,OUTPUT_LOW_IS_ACTIVE = 1,OUTPUT_HIGH_IS_ACTIVE = 2, } output_active_t;#define OUTX_CONFIG(gpio, pin) GPIOConfig(gpio, pin, GPIO_MODE_OUTPUT_PP, GPIO_NOPULL) #define OUTX_READ(gpio, pin) HAL_GPIO_ReadPin(gpio, pin) #define OUTX_ACTIVE(gpio, pin, tag) do{ \if(OUTPUT_LOW_IS_ACTIVE == tag) \{ \HAL_GPIO_WritePin(gpio, pin, GPIO_PIN_RESET); \} \else \{ \HAL_GPIO_WritePin(gpio, pin, GPIO_PIN_SET); \} \ } while(0); #define OUTX_NEGATIVE(gpio, pin, tag) do{ \if(OUTPUT_LOW_IS_ACTIVE == tag) \{ \HAL_GPIO_WritePin(gpio, pin, GPIO_PIN_SET); \} \else \{ \HAL_GPIO_WritePin(gpio, pin, GPIO_PIN_RESET); \} \ } while(0);#define OUT1_PORT GPIOA #define OUT1_PIN GPIO_PIN_0#define OUT2_PORT GPIOA #define OUT2_PIN GPIO_PIN_1#define OUT3_PORT GPIOA #define OUT3_PIN GPIO_PIN_2 // demo代碼只傳遞思想 // 封裝出對外的四個接口初始化輸出有效輸出無效輸出取反 // 以列表的形式封裝方便增加和刪除static void output_config(GPIO_TypeDef *gpio, uint16_t pin) {OUTX_CONFIG(gpio, pin); }static uint8_t output_is_enable(uint8_t index) {// 輸出通道可用這里也可以變成可配置可以配置本IO口有效和無效return 1; }static void output_active(GPIO_TypeDef *gpio, uint16_t pin, uint8_t tag) {OUTX_ACTIVE(gpio, pin, tag); }static void output_negative(GPIO_TypeDef *gpio, uint16_t pin, uint8_t tag) {OUTX_NEGATIVE(gpio, pin, tag); }static void output_toggle(GPIO_TypeDef *gpio, uint16_t pin, uint8_t tag) {// 這里可以不用這么麻煩，使用HAL_GPIO_TogglePinif(OUTX_READ(gpio, pin) == 0){OUTX_ACTIVE(gpio, pin, tag);}else{OUTX_NEGATIVE(gpio, pin, tag);} }typedef struct {GPIO_TypeDef *gpio;uint16_t pin;void (* output_config_cb)(GPIO_TypeDef *gpio, uint16_t pin);uint8_t (* output_is_enable_cb)(uint8_t index);void (* output_active_cb)(GPIO_TypeDef *gpio, uint16_t pin, uint8_t tag);void (* output_negative_cb)(GPIO_TypeDef *gpio, uint16_t pin, uint8_t tag);void (* output_toggle_cb)(GPIO_TypeDef *gpio, uint16_t pin, uint8_t tag); } output_port_t;static output_port_t output_items[] = {{OUT1_PORT, OUT1_PIN, output_config, output_is_enable, output_active, output_negative, output_toggle},{OUT2_PORT, OUT2_PIN, output_config, output_is_enable, output_active, output_negative, output_toggle},{OUT3_PORT, OUT3_PIN, output_config, output_is_enable, output_active, output_negative, output_toggle}, };static void output_init(uint32_t value) {uint32_t i, mask = 1;for(i = 0; i < ARRAY_SIZE(output_items); ++i){if(value & mask){ #if(CONFIG_OUTPUT_TEST == 1)config.output.total_switch = OUTPUT_MODE_OPEN;config.output.sub_switch[i] = OUTPUT_MODE_OPEN;config.output.active_tag[i] = OUTPUT_HIGH_IS_ACTIVE; #endifoutput_items[i].output_config_cb(output_items[i].gpio, output_items[i].pin);output_items[i].output_negative_cb(output_items[i].gpio, output_items[i].pin, config.output.active_tag[i]);}mask <<= 1;} }void OutputHigh(uint32_t value) {uint32_t i, mask = 1;for(i = 0; i < ARRAY_SIZE(output_items); ++i){if(value & mask){if(output_items[i].output_is_enable_cb(i)){output_items[i].output_active_cb(output_items[i].gpio, output_items[i].pin, config.output.active_tag[i]);}}mask <<= 1;} }void OutputLow(uint32_t value) {uint32_t i, mask = 1;for(i = 0; i < ARRAY_SIZE(output_items); ++i){if(value & mask){if(output_items[i].output_is_enable_cb(i)){output_items[i].output_negative_cb(output_items[i].gpio, output_items[i].pin, config.output.active_tag[i]);}}mask <<= 1;} }void OutputToggle(uint32_t value) {uint32_t i, mask = 1;for(i = 0; i < ARRAY_SIZE(output_items); ++i){if(value & mask){if(output_items[i].output_is_enable_cb(i)){output_items[i].output_toggle_cb(output_items[i].gpio, output_items[i].pin, config.output.active_tag[i]);}}mask <<= 1;} }void OutputInit(void) {output_init(0xFFFFFFFF);OutputLow(0xFFFFFFFF); }