}/*Set interrupt handlers*//*Handle PD0 interrupt*/voidEXTI0_IRQHandler(void) {/*Make sure that interrupt flag is set*/if(EXTI_GetITStatus(EXTI_Line0) !=RESET) {/*Do your stuff when PD0 is changed*//*Clear inte
EXTI就是External interrupt/event controller, 外部事件和中断控制器, 包含21条边沿检测线. 每条线可以独立设置触发事件(上升沿, 下降沿或两者同时). 一个等待寄存器维护中断请求的状态. 当动作发生(例如按键按下)时, 如果电平状态由低变高, 会在输入线产生一个上升沿信号, 这个信号到达边沿检测电路后, 会被上升...
EXTI就是External interrupt/event controller, 外部事件和中断控制器, 包含21条边沿检测线. 每条线可以独立设置触发事件(上升沿, 下降沿或两者同时). 一个等待寄存器维护中断请求的状态. 当动作发生(例如按键按下)时, 如果电平状态由低变高, 会在输入线产生一个上升沿信号, 这个信号到达边沿检测电路后, 会被上升...
1 外部中断概述 EXTI(External interrupt/event controller)—外部中断/事件控制器,和在STM32NVIC中断优先级管理(中断向量表)中讲述的CM3内核的外部中断不同。特指的是,在中断向量表中的EXTI的外部中断。STM32的每个IO都可以作为外部中断输入。EXTI管理了控制器的 20个中断/事件线。每个中断/事件线都对应有一个边沿...
External oscillators: 4 to 50 MHz HSE, 32.768 kHz LSE Low-power modes Sleep, Stop and Standby modes VBATsupply for RTC, 32 backup registers (32 bits) General-purpose inputs/outputs Up to 49 fast I/Os with interrupt capability (most 5 V tolerant) ...
Up to 116 fast I/Os (102 I/Os 5V tolerant), all mappable on 16 external interrupt vectors Memories 256 Kbytes of Flash memory with ECC 32 Kbytes of RAM 8 Kbytes of true EEPROM with ECC 128-byte backup register LCD driver (except STM32L151xC/C-A devices) up to 8x40 segments, contr...
This example shows how to configure and use SPI blocks to read and write data using Embedded Coder® Support Package for STMicroelectronics® STM32 Processors.In this example, you will learn how to read and write data to an external SPI EEPROM using the SPI Transmit block, the SPI ...
GPIO (32) with external interrupt capability 12-bit ADC (2) with 10 channels RTC Timers (4) I2C (2) USART (3) SPI (2) USB 2.0 full-speed CAN Board featuresSmall foot-print Flexible board power supply: USB VBUS or external source (3.3V, 5V) User LED: LED1 One pu...
也可以配合 DMA half-transfer interrupt，看每 25 个采样就处理一次，响应更快一点。
The Cortex-M0+ processor core, a nested vectored interrupt controller (NVIC) and an extended interrupt/event controller (EXTI) are the assets contributing to handling the exceptions. Exceptions include core-internal events such as, for example, a division by zero and, core-external events such ...