* @retval GPIO input data port value.*/uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx) b.读取端口某个引脚的电平值 /** * @brief Reads the specified input port pin. * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F405xx/407xx and STM32F415xx/417...
*@briefReadthespecifiedinputportpin. *@paramGPIOxwherexcanbe(A..H)toselecttheGPIOperipheralforSTM32L4family *@paramGPIO_Pinspecifiestheportbittoread. *ThisparametercanbeanycombinationofGPIO_Pin_xwherexcanbe(0..15). *@retvalTheinputportpinvalue. */ GPIO_PinStateHAL_GPIO_ReadPin(GPIO_TypeDef*GPIO...
GPIO 概述 GPIO(General-purpose input/output)即通用型输入输出,用于控制芯片引脚的数字输入和数字输出。通常,GPIO 控制器通过分组的方式管理所有 GPIO 管脚,每组 GPIO 有一个或多个寄存器与之关联,通过读写寄存器完成对 GPIO 管脚的操作。GPIO 是芯片上一根能完成多种功能的管脚,用户可以通过 GPIO 口和硬件进行数据...
GPIO_InitPeripheral(Key_Port, &GPIO_InitStructure);} int main(void){ InPut_IO_Init();OutPut_IO...
value=1;elsevalue=0; }else//GPIO输入{//读取Input data寄存器对应引脚的值temp = gpio_ptr->IDR;if((temp & (1u<<pin)) !=0x00u) value=1;elsevalue=0; }returnvalue; } 延时delay.h delay函数的作用是在程序中引入一个时间延迟。当调用delay函数时,程序会停止执行指定的时间段,然后再继续执行后面...
int val; gpio_direction_input(your_gpio); val = gpio_get_value(your_gpio); 下面是常用的 GPIO API 定义: #include <linux/gpio.h> #include <linux/of_gpio.h> enum of_gpio_flags { OF_GPIO_ACTIVE_LOW = 0x1, }; int of_get_named_gpio_flags(struct device_node *np, const char *pr...
(0..15). * @retval The input port pin value. */GPIO_PinStateHAL_GPIO_ReadPin(GPIO_TypeDef*GPIOx,uint16_t GPIO_Pin){GPIO_PinState bitstatus;/* Check the parameters */assert_param(IS_GPIO_PIN(GPIO_Pin));if((GPIOx->IDR&GPIO_Pin)!=0x00u){bitstatus=GPIO_PIN_SET;}else{bitstatus...
voidHAL_GPIO_TogglePin(GPIO_TypeDef*GPIOx,uint16_t GPIO_Pin){uint32_t odr;/* Check the parameters */assert_param(IS_GPIO_PIN(GPIO_Pin));/* get current Output Data Register value */odr=GPIOx->ODR;/* Set selected pins that were at low level, and reset ones that were high */GPIO...
uint16_tGpio_GetInputData(en_gpio_port_t enPort)举例 u16PAInputData = Gpio_GetInputData(Gpio...
int val; gpio_direction_input(your_gpio); val = gpio_get_value(your_gpio); 下面是常用的 GPIO API 定义: #include <linux/gpio.h> #include <linux/of_gpio.h> enum of_gpio_flags { OF_GPIO_ACTIVE_LOW = 0x1, }; int of_get_named_gpio_flags(struct device_node *np, const char *pr...