Created by Gerad Munsch 2017-11-01

File reset_bluetooth_usb.sh Added

+#!/usr/bin/env bash

+#

+# Resets the bluetooth controller with usbreset

+#

+##

+## determine bluetooth device usb path

+##

+BT_DEVICE_PATH="/dev/bus/usb/$(lsusb | egrep 'Bluetooth' | sed 's/^Bus \(...\) Device \(...\).*$/\1\/\2/')"

+##

+## provide user output

+##

+echo -e "\n\t+--------------------------------+"

+echo -e "\t|\033[33;1m RESETTING \033[34mBLUETOOTH\033[33m CONTROLLER\033[0m |"

+echo -e "\t+--------------------------------+\n"

+echo -e "\033[1mDevice Path:\033[0m\t${BT_DEVICE_PATH}\n\n"

+##

+## reset USB device

+##

+usbreset "${BT_DEVICE_PATH}"

File usbreset.c Added

+/**

+ * \file usbreset.c

+ * Send a USB port reset to a USB device

+ *

+ * Compile using:

+ * \code{.sh}

+ * gcc -o usbreset usbreset.c

+ * chmod a+x ./usbreset

+ * cp ./usbreset /usr/local/bin/usbreset

+ * \endcode

+ *

+ */

+#include <stdio.h>

+#include <unistd.h>

+#include <fcntl.h>

+#include <errno.h>

+#include <sys/ioctl.h>

+#include <linux/usbdevice_fs.h>

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

+	const char *filename;

+	int fd;

+	int rc;

+    /* usbreset takes exactly 1 argument: the USB device filename */

+	if (argc != 2) {

+		fprintf(stderr, "Usage: usbreset device-filename\n");

+		return 1;

+	}

+    /* Our (only) argument is the device filename */

+	filename = argv[1];

+    /* Open the file descriptor.. */

+	fd = open(filename, O_WRONLY);

+    /* ...and make sure it was sucessful */

+	if (fd < 0) {

+		perror("Error opening output file");

+		return 1;

+	}

+	printf("Resetting USB device %s\n", filename);

+    rc = ioctl(fd, USBDEVFS_RESET, 0);

+    if (rc < 0) {

+		perror("Error in ioctl");

+		return 1;

+	}

+	printf("Reset successful\n");

+	close(fd);

+	return 0;

+}