-84 [ 2.670204] get id is fail, -84 [ 2.675067] cfg80211: Loading compiled-in X.509 certificates for regulatory database [ 2.685997] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' [ 2.693628] platform regulatory.0: Direct...
在里面找到如下所示内容：示例代码45.2.2.2 gpio1节点504 gpio1:gpio@0209c000 {505 compatible ="fsl,imx6ul-gpio","fsl,imx35-gpio";506 reg =<0x0209c0000x4000>;507 interrupts =<GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>,508<GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;509 gpio-controller;510 #gpio-cells...
led-gpio num = %d\r\n", gpioledled_gpio); 148 149/* 3、设置GPIO_IO03为输出,并且高电平默认关闭LED灯 */ 150 ret = gpio_direction_output(gpio._gpio,1); 151if(ret <0){ 152 printk("can't set gpio!\r\n"; 153} 154 155/* 注册字符设备驱动 */ 156/...
Linux内核中有一套GPIO框架,管理和控制芯片上的GPIO管教,包括配置输入输出,配置电平高低(输出)和获取电平高低(输入),中断管理。只需要通过读取/sys/class/gpio/gpioN/value的值来获取中断。当然也不是简单的read,而是通过epoll、poll、select等这些IO复用函数来控制,对于epoll或者poll,需要监听的事件是EPOLLPRI...
int ret = 0,minornum=0; struct inode * ginode = NULL; struct pwm_chip * pwm_dev = NULL; ginode = file_inode(filep); minornum= iminor(ginode); pwm_dev = &gloabl_pwms_dev[minornum]; printk("pwm_drv_ioctl.minornum=%d...gpio=%d.period=%ld..duty=%ld..\n",minornum,pwm...
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gpio num = %d\\n", gpioled.led_gpio); 148 149/* 3、设置GPIO_IO03为输出,并且输出电平默认关闭LED灯 */ 150 ret = gpio_direction_(gpio.ledgpio,1); 151if(ret <0){ 152 printk("can't set gpio!\r\n"); 153} 154 155/* 注册字符设备驱动 */ 156/* 1、创建设备 */...
pigpio is a C library for the Raspberry which allows control of the General Purpose Input Outputs (GPIO). - pigpio/pigpiod_if2.c at master · joan2937/pigpio
.num_leds = 8, },};static const struct of_device_id of_pca9532_leds_match[] = { ... { .compatible = "nxp,pcal6408", .data = (void *)pcal6408 }, {},}; And also leds-pca955x.c enum pca955x_type { ... pcal6408,}; static struct pca...
-n NUM:显示NUM次,主要用于非交互式模式。 -d SEC:间隔SEC秒显示一次。 -p PID:监控的进程pid。 -u USER:监控的进程用户。iotop常用快捷键:左右箭头:改变排序方式,默认是按IO排序。 r:改变排序顺序。 o:只显示有IO输出的进程。 p:进程/线程的显示方式的切换。 a:显示累积使用量。 q:退出。实例直接执行...