GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); //这里会执行16次for查询 使用举例: GPIO_InitTypeDef GPIO_InitStruct; GPIO_InitStruct.Pin = GPIO_PIN_0; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; /* 推挽...
GPIO_InitTypeDef GPIO_InitStruct; GPIO_InitStruct.Pin=GPIO_PIN_0; GPIO_InitStruct.Mode= GPIO_MODE_OUTPUT_PP;/*推挽输出*/GPIO_InitStruct.Pull= GPIO_NOPULL;/*无上拉和下拉电阻*/GPIO_InitStruct.Speed= GPIO_SPEED_FREQ_VERY_HIGH;/*GPIO速度等级最高*/HAL_GPIO_Init(GPIOA,&GPIO_InitStruct); ...
GPIO_InitStruct.Pin = GPIO_PIN_0; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; /* 推挽输出 */ GPIO_InitStruct.Pull = GPIO_NOPULL; /* 无上拉和下拉电阻 */ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; /* GPIO速度等级最高 */ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); 1. 2...
GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF7_USART3; HAL_GPIO_Init(GPIOD, &GPIO_InitStruct); /*Configure GPIO pins : Relay_Ctrl_Pin USB_PowerSwitchOn_Pin */ GPIO_InitStruct.Pin = Relay_Ctrl_Pin|USB_Pow...
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); // 初始化 GPIO ``` 在以上代码示例中,通过配置`Alternate`成员变量为`GPIO_AF7_USART1`,将GPIO引脚配置为USART1的TX输出。 2. 使用中断控制 GPIO中断是实现异步事件处理的关键技术,可以用于处理外部事件的触发、检测和响应。通过中断控制,可以实现实时响应外部事件,...
GPIO_Init(GPIOA, &GPIO_InitStructure);/* Configure USART1 Tx (PA.09) as alternate push-pull ...
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF7_USART3; HAL_GPIO_Init(GPIOD,&GPIO_InitStruct); /*Configure GPIO pins : Relay_Ctrl_Pin USB_PowerSwitchOn_Pin */ GPIO_InitStruct.Pin = Relay_Ctrl_Pin|USB_PowerSwitchOn_Pin; ...
GPIO_Mode_AF = 0x02, /*!< GPIO Alternate function Mode */ GPIO_Mode_AN = 0x03 /*!< GPIO Analog In/Out Mode */ }GPIOMode_TypeDef;这个结构体定义了端口的模式。分别是：输入、输出、复用、模拟输入。默认状态下是普通IO口，也就是输入或输出，此时单片机的端口只能输入或输...
这里定义了一个名为 MX_GPIO_Init 的函数,没有输入参数,也没有返回值。同时创建了一个 GPIO_InitTypeDef 类型的结构体变量 GPIO_InitStruct 并初始化为零。 __HAL_RCC_GPIOD_CLK_ENABLE();__HAL_RCC_GPIOC_CLK_ENABLE();__HAL_RCC_GPIOA_CLK_EN...
NVIC (Nested Vectored Interrupt Controller): As a part of ARM Cortex-M, it will manage interrupts, especially the nested and interrupt vector, that is the pointer points at interrupt service routine. Function Multiplexing# In embedded systems, including plenty of micro-controllers and micro-processo...