1. 定义软件定时器 (soft_timer.h) #ifndef __SOFT_TIMER_H #define __SOFT_TIMER_H #include "stm32f1xx_hal.h" // 根据你的 STM32 型号选择头文件 #include <stdint.h> #include <stddef.h> // For NULL // --- 配置项 --- #define SOFT_TIMER_MAX_TIMERS 10 // 最大支持的软件定时器...
cGPIO_InitTypeDef GPIO_InitStruct = {0}; GPIO_InitStruct.Pin = GPIO_PIN_0; GPIO_InitStruct.Mode = GPIO_MODE_INPUT_PULLUP; // 上拉输入 GPIO_InitStruct.Pull = GPIO_PULLUP; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); 1. 二、外部中断(EXTI)机制详解 STM32的 EXTI(External Interrupt) 模块...
For example, this ISR exits immediately after clearing the timer interrupt. Without the external buffer implementation, this code would work as expected. However, on a device with an external, system-level write buffer, this code could cause this "double IRQ" condition: void Timer_IRQHandler (vo...
HAL_TIMEx_PWMN_Start_IT函数的注释是Starts the PWM signal generation in interrupt mode也就是说...
Example 3: Timer Interrupts Timers can be used to trigger a variety of interrupts (see section 72.2.9 of theHAL/LL API reference documentfor a list of possible HAL-supported interrupt callbacks). We will use a very basic interrupt: when the timer reaches its maximum value,...
1.1先看中断接收的流程(以 USART2 为例) 在启动文件中找到中断向量 USART2_IRQHandler 找到USART2_IRQHandler的函数定义 可以看到这里又转到另一个函数里去了,再找下去: 该函数的源码: /** * @brief This function handles UART interrupt request. * @param huart: pointer to a UART_HandleTypeDef stru(2)...
1 rtthread开关中断函数(cortex-m)/* * rt_base_t rt_hw_interrupt_disable(); */.global 安德森大 2022-05-25 15:02:25 ch582进入中断后会自动关中断吗? 进入中断后会自动关中断吗?如果不会,硬件可以自动保存caller saved registers,软件保存系统寄存器mstatus, mepc之前被更高优先级中断抢占了怎么办?
STM32入门编程总结4 (中断+串口) 系统异常中断与外部中断统称为中断,复位中断的优先级最高, NVIC (Nested Vectored Interrupt 2022-02-19 22:12:05 如何通过配置串口的接收作为中断源 使用中断 通过配置串口的接收作为中断源,开启中断输出控制,配置NVIC。开启中断通道。 //开启中断输出控制 USART_ITConfig(USART2...
NVIC_SetPendingIRQ(Timer0_IRQn);// 此处假设 Timer0_IRQn 等于 3// Timer0_IRQn 为定义在设备...
__HAL_CAN_ENABLE_IT (&hcan, CAN_IT_FMP0); the interrupt; void CEC_CAN_IRQHandler(void) { /* USER CODE BEGIN CEC_CAN_IRQn 0 */ CAN_IRQFlag = true; // not needed, just used to show interrupt occurred checkCanRxFifos(); // clear the data before HAL sees it ...