(2)gpio_config_t结构体定义如下 AI检测代码解析 typedef struct { uint64_t pin_bit_mask; /*!<设置位掩码*/ gpio_mode_t mode; /*!< 设置输入/输出模式*/ gpio_pullup_t pull_up_en; /*!< 设置上拉*/ gpio_pulldown_t pull_down_en; /*!<设置下拉*/ gpio_int_type_t intr_type; /*!
gpio_set_intr_type这个函数用来设置gpio中断类型的设置,参数有两个,一个是GPIO的编号枚举类gpio_num_t和中断类型枚举类gpio_int_type_t。 再来看一下函数定义: ``` /** * @brief GPIO set interrupt trigger type 设置中断触发类型 * * @param gpio_num GPIO number. If you want to set the trigger ...
#include "sys.h" #include "delay.h" #include "beep.h" int main(void) { delay_init(); //延时函数初始化 LED_Init(); //初始化与LED连接的硬件接口 BEEP_Init(); //初始化蜂鸣器端口 while(1) { LED0_ON; BEEP_ON; delay_ms(300);//延时300ms LED0_OFF; BEEP_OFF; delay_ms(300);...
AI代码解释 #include<stdint.h>#include"reg.h"// 假设寄存器定义在这个头文件中intmain(){// 配置P0和P1引脚为输出模式GPIO->Direction|=(1<<0);// P0设置为输出GPIO->Direction|=(1<<1);// P1设置为输出while(1){// 点亮第一个LED(P0引脚)GPIO->Data|=(1<<0);delay(1000);// 延时1秒// ...
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //设置为推挽输出模式 GPIO_Init(GPIOC, &GPIO_InitStructure); //初始化GPIOC}// 延时函数void delay(u32 i){ while (i--) //当i不为0时，持续减1，实现延时 ;}// 打开指定位置的LEDvoid on(int position){ // GPIOC->BSRR = ...
f、端口输入电平读取:unsigned int gpio_read_port(eGpioType_t gpio) g、引脚输出电平翻转:void gpio_out_reversal(eGpioType_t gpio, ePinType_t pin) 2、和引脚相关的枚举类型如下(目的是为了将项目上层代码与底层驱动彻底的断开耦合): // GPIO端口类型 ...
intmain(void) { delay_init();//延时函数初始化 LED_Init();//初始化与LED连接的硬件接口 while(1) { LED0_OFF; LED1_ON; delay_ms(300);//延时300ms LED0_ON; LED1_OFF; delay_ms(300);//延时300ms } } 5.2 蜂鸣器实验 实现开发板上蜂鸣器发声,并用一个指示灯LED0指示蜂鸣器正在发声。
(2)ms_io_driver_t /* * ms_io_driver_ops_t */ typedef struct { ms_io_drv_type_t type; int (*open) (ms_ptr_t ctx, ms_io_file_t *file, int oflag, ms_mode_t mode); int (*close) (ms_ptr_t ctx, ms_io_file_t *file); ms_ssize_t (*read) (ms_ptr_t ctx, ms_io...
void handle_irq_c(void) { int nr; GIC_Type *gic = get_gic_base(); /* The processor reads GICC_IAR to obtain the interrupt ID of the * signaled interrupt. This read acts as an acknowledge for the interrupt */ nr = gic-> C_IAR; printf("irq %d is happened\r\n", nr); irq...
static int firefly_gpio_probe(struct platform_device *pdev) { int ret; int gpio; enum of_gpio_flags flag; struct firefly_gpio_info *gpio_info; struct device_node *firefly_gpio_node = pdev->dev.of_node; printk("Firefly GPIO Test Program Probe\n"); gpio_info = devm_kzalloc(&pdev->...