Solved: Hi all I am using CY8KIT-062-BLE I want interrupt of multiple pins in same port I found this code snippet which exactly suits my application
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource0); //设置GPIOX中断源以及哪个中断脚 EXTI_InitStructure.EXTI_Line = EXTI_Line0;//中断线 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;//设置为外部中断模式 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;//上升沿触发 EXTI_InitStru...
IOINTEDG2 0x0000 Memory Mapped Register: Data bits used to set the Interrupt trigger of GPIO pins 16 - 31 to rising or falling edge if the GPIO has interrupt enabled. 0 = rising edge; 1 = falling edge IOINTEN1 0x0010 Memory Mapped Register: Data bits used to enable the Inte...
EXTI_Mode_Interrupt = 0x00, //中断模式 EXTI_Mode_Event = 0x04 //事件模式 }EXTIMode_TypeDef; 1. 2. 3. 4. 5. (c)、边沿事件触发方式:用于选择外部IO输入时信号边沿触发事件的方式。 typedef enum { EXTI_Trigger_Rising = 0x08, //信号上升沿触发 EXTI_Trigger_Falling = 0x0C, //信号下降沿...
EXTI_IMR (Interrupt mask register) 0: 屏蔽所对应的中断。1: 允许对应中断。 EXTI_RTSR (Rising trigger selection register) 0: 禁止上升沿触发。1: 使能上升沿触发。 EXTI_FTSR (Falling trigger selection register) 0: 禁止下降沿触发。1: 使能下降沿触发。 如果上升沿和下降沿都设置为1,那么在上升沿和...
调用函数request_irq(GPIO_INT_NUM,gpio_int_handler,IRQF_DISABLED,"GPIO_INT_midas",NULL) 申请注册中断,相关要素可查阅网上资料。 IRQF_TRIGGER_RISING 标志应该也可以用,没有试过。 申请注册成功后,可以用 cat /proc/interrupts 命令看到对应的中断号。
}//将gpio设置为输入gpio_direction_input(home_gpio_idx);//获取中断号home_inter_idx = gpio_to_irq(home_gpio_idx);//申请中断,下降沿触发ret = request_irq(home_inter_idx, home_interrupt, IRQF_TRIGGER_FALLING,"home_key", dev);if(ret <0){ ...
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; /* 上升沿中断 */ EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; /* 使能中断 */ EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); /*---KEY2配置---*/ /* 选择按键用到的GPIO */ GPIO_InitStructure.GPIO_Pin...
1.上升沿触发(Rising Edge Trigger):当GPIO引脚从低电平变为高电平时触发中断。 2.下降沿触发(Falling Edge Trigger):当GPIO引脚从高电平变为低电平时触发中断。 3.双边沿触发(Both Edge Trigger):当GPIO引脚发生上升沿或下降沿时触发中断。 4.高电平触发(High Level Trigger):当GPIO引脚保持在高电平时触发中断...
• GPIO.IRQ_FALLING falling edge trigger • GPIO.IRQ_BOTH triggers on both rising and falling edges 2.2.2.return value# no 2.3.disirq# Close interrupt GPIO.disirq() 2.3.1.Parameters# no 2.3.2.return value# no 2.4.mode# ...