gpio_major= register_chrdev(0,"tfirq", &tf_fops);//注册一个字符设备gpio_class = class_create(THIS_MODULE,"tfirq");//创建一个类device_create(gpio_class, NULL, MKDEV(gpio_major,0), NULL,"tfirq");//在类下面创建一个设备if(gpio_request(gpio_pin,"gpio_irq_test") <0){ printk("req...
marcohess Contributor II In the KSDK, there is a GPIO_DRV_ClearPinIntFlag to clear the interrupt for a particular pin on a port. Why is there not a equivalent function to get the interrupt status of a pin? Like GPIO_DRV_GetPintIntFlag or something like that to you can easily test in ...
gpio_keys_gpio_isr:设备树中的用gpios来描述用到的引脚 gpio_keys_irq_isr:设备树中的用interrupts来描述用到的引脚 3.2 gpio_keys_gpio_isr分析 理想状况是:按下、松开按键,各产生一次中断,也只产生一次中断。 但是对于机械开关,它的金属弹片会反复震动。GPIO电平会反复变化,最后才稳定。一般是几十毫秒才会稳定。
Development version of the Upstream MultiPath TCP Linux kernel 🐧 - gpio: lp3943: remove unneeded platform_set_drvdata() call · multipath-tcp/mptcp_net-next@c518e7d
硬件参考:TB6600的GPIO控制. 该驱动器的接线核心和DRV8825实际上是一样的,主要有三个信号:使能端口、脉冲信号输入、方向控制。不同的是TB6612内部需要差异信号,因此需要涉及共阴或共阳的接线。一般来说,我个人建议使用共阳的接线方法,并将所有信号阳极接收到3.3V电源正极,信号负极一对一接收单片机控制引脚。因为32的...
am4372的usb1的默认电路是使用drvvubs的这个引脚,对应CPU的引脚号是F25,但是我们硬件在做设计的时候,将这个引脚当成了gpio使用,对应了gpio3-13,在设备树中也将这个引脚配置成了gpio,设备树中没有usb1引脚的相关配置,在设备树中也将usb1使能了。现在发现在Linux系统启动的过程,gpio3-13引脚的继电器被拉高了一秒钟左...
Part Number: DRV8834 Can these 7 pins of DRV8834 be controlled by SOC GPIO? 6 年多前 Pablo Armet 6 年多前 TI__Mastermind 37683 points Hi Hsu, Yes, you can use a SOC GPIO control. Up 0 True Down About TI Company Careers Newsroom Events Investor relations Manufactur...
对于每一个GPIO按键,都是一个子节点,有这些属性: gpios:使用哪个GPIO interrupts:对应的中断 linux,code:对应的按键值 注意:gpios和interrupts至少要保留一个,不能都省略 debounce-interval: 消除抖动的间隔,单位:ms,默认是5ms 2.2 100ASK_IMX6ULL 代码语言:javascript ...
The platform_set_drvdata() was needed when the driver had an explicit remove function. That function got removed a while back, so we don't need to keep a pointer (on 'dev->driver_data') for the private data of the driver anymore. Signed-off-by: Alexandru Ardelean <alex@shruggie.ro...