1.驱动支撑gpiokeys子系统就是为了实现GPIO+按键实现键盘功能。在一些不支持USB键盘的应用场景非常有用。实现DTS的修改: 这里说明一下键值,如上图中的linux,code对应的值...:drivers/input/keyboard/gpio_keys.cmake menuconfig添加驱动: DeviceDrivers—>Inputdevice ...
code=<KEY_F13>;label="GPIO F13 Power";linux,input-type=<1>;gpio-key,wakeup=<1>;debounce-interval=<100>;};button@1 {gpios=<&pio 48 IRQ_TYPE_EDGE_BOTH>;linux,code=<KEY_F14>
linux,input-type = <1>; linux,code = <KEY_VOLUMEUP>; linux,can-disable; debounce-interval = <15>; gpio-key,wakeup; }; userkey1 { label ="userkey1"; gpios = <&tlmm107GPIO_ACTIVE_HIGH>; linux,input-type = <1>; linux,code = <KEY_F22>; linux,can-disable; debounce-interval ...
linux,code = <0x01>;/* KEY_1 */gpio-key,wakeup; debounce-interval = <15>; }; }; debug log: [root]# hexdump /dev/input/event0[49.799309]gpio_keys_gpio_report_event()keycode:1,state:00000000003100002536000c00010001000000000000010003100002536000c0000000000000000[52.139315]gpio_keys_gpio_report_even...
gpio_keys: gpio_keys@0 { compatible = "gpio-keys"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_gpio_keys>; #address-cells = <1>; #size-cells = <0>; autorepeat; key1@1 { label = "USER-KEY1"; linux,code = <114>; gpios = <&gpio1 18 GPIO_ACTIVE_LOW>; //interrupt...
linux下的GPIO -keys .在此之前,先打开相应的头文件. 其中gpio_keys_button就是我们要引用到板级相关文件的一个重要的结构体,他的每个字段的意义,挑重点的说一说.code字段,意思就是对应Linux的按键...gpio_keys_platform_data里,其中nbuttons就是有的按键总数.在板级文件中要声明.比如做2个引脚,一个是F1,一...
linux,code = <104>; /* center */ ... I can see the associated gpio in /sys/class/gpio897 But I've got this error and it doesn't work: gpio-keys keypad: Unable to get irq number for GPIO 897, error -6 Could anyone help me?
gpio-keys { compatible = "gpio-keys"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_gpio_pmic>; // nPBOUT Line Input power_button_npbout { label = "nPBOUT"; gpios = <&gpio2 18 GPIO_ACTIVE_LOW>; linux,code = <KEY_RESTART>; debounce-interval = <0>; //...
CONFIG_KEYBOARD_GPIO=y CONFIG_SERIO_LIBPS2=y CONFIG_INPUT_EVBUG=m and our DTS file to include: gpio-keys { compatible = "gpio-keys"; switch1 { label = "Switch 1"; gpio = <&gpio1 12 0>; linux,code = <89>; /* Unmapped keycode */ ...
linux,code = <114>; /* KEY_VOLUMEDOWN */ }; }; 里的compatible匹配到。则会调用platform里的probe成员函数 static int gpio_keys_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; const struct gpio_keys_platform_data *pdata = dev_get_platdata(dev); ...