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MindSDK_MM32F5270/driver_examples/exti/exti_basic
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Yilin Sun 3977144e90
Initial MM32F527x commit. 
Signed-off-by: Yilin Sun <imi415@imi.moe>
 		2023-03-27 21:54:40 +08:00
..
build Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00
board_init.c Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00
board_init.h Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00
clock_init.c Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00
clock_init.h Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00
main.c Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00
pin_init.c Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00
pin_init.h Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00
readme.md Initial MM32F527x commit. 2023-03-27 21:54:40 +08:00

readme.md

exti_basic

实验过程

  • 设置SYSCFG的外部输入引脚线和引脚号。设置EXTI的输入源和输入边沿，使能EXTI的中断。

  • 主程序中不断轮询全局标志位，当 BOARD_EXTI_LINE 的 BOARD_EXTI_PORT 引脚上出现下降沿，触发 exti 中断，进入中断处理函数，将全局标志位设置为真。串口将打印累计的 exti 中断次数。

  • 清空全局标志位，等待下一次事件。

实验结果

exti_basic. exti interrupt times:1. exti interrupt times:2. exti interrupt times:3. exti interrupt times:4. exti interrupt times:5. exti interrupt times:6.