| 0,0 → 1,52 |
|---|
| |
| // https://gist.github.com/x2q/5124616 |
| // https://www.raspberrypi.org/forums/viewtopic.php?t=86265https://www.raspberrypi.org/forums/viewtopic.php?t=86265 |
| |
| /* usbreset -- send a USB port reset to a USB device |
| * |
| * Compile using: gcc -o usbreset usbreset.c |
| * |
| * |
| * */ |
| |
| |
| |
| |
| #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; |
| |
| if (argc != 2) { |
| fprintf(stderr, "Usage: usbreset device-filename\n"); |
| return 1; |
| } |
| filename = argv[1]; |
| |
| fd = open(filename, O_WRONLY); |
| 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; |
| } |