sepfy

#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <stdint.h>
#include <unistd.h>


int main(int argc, char **argv) {

sepfy

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <libavutil/opt.h>
#include <libavutil/mathematics.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#include <libswresample/swresample.h>

sepfy

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <sys/time.h>
#include <wpa_ctrl.h>

#define CTRL_INTERFACE_DIR "/var/run/wpa_supplicant/wlan0"  

int main(int argc, char *argv[]) {

sepfy

#include <stdio.h>
#include <stdlib.h>
#include <wpa_ctrl.h>

#define CTRL_INTERFACE_DIR "/var/run/wpa_supplicant/wlan0"  

int main(int argc, char *argv[]) {

  struct wpa_ctrl *ctrl_conn;

sepfy

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/ioctl.h> // for open
#include <unistd.h> // for close

#define IOCTL_MISCDEV_SET 0x00
#define IOCTL_MISCDEV_GET 0x01

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struct miscdev_data {
    int val;
    char data[64];
};

#define IOCTL_MISCDEV_SET 0x00
#define IOCTL_MISCDEV_GET 0x01

static long mydev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{

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static ssize_t
mydev_read(struct file *filp, char __user *buf, size_t count, loff_t *pos)
{
	char tmp[] = "Kernel says hello";
	printk("[%s][%d]\n", __func__, __LINE__);
	copy_to_user(buf, tmp, sizeof(tmp));
	*pos = 0;
	return 0;
}

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static struct miscdevice my_miscdev = {
	.minor      = 11,
	.name       = "misc_dev",
	.fops       = &mydev_fops,
};

static int __init init_modules(void)
{
	int ret;
	ret = misc_register(&my_miscdev);

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#define BUZZER 23
#define BUTTON 21

static short int button_irq = 0;
static unsigned long flags = 0;

int buzzer_trigger = 0;
u32 trigger_jiffies;

static irqreturn_t button_isr(int irq, void *data)

sepfy

static ssize_t attr_store(struct device *dev,
		struct device_attribute *attr,
		const char *buf, size_t count)
{

	printk("[%s][%d]\n", __func__, __LINE__);
	buzzer_trigger = simple_strtoul(buf, NULL, 10);
	gpio_set_value(BUZZER, buzzer_trigger);
	return count;
}