Administrace komentářů

nano usbreset.c

/* usbreset -- send a USB port reset to a USB device */

#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.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;
}

cc usbreset.c -o usbreset
chmod 755 usbreset

cat usbreset-script.sh
bus=`lsusb | grep 'Huawei' | awk '{print $2}'`
dev=`lsusb | grep 'Huawei' | awk '{print $4}' | awk '{print substr($0,0,4)}'`

echo "/dev/bus/usb/$bus/$dev"

./usbreset /dev/bus/usb/$bus/$dev

./usbreset-script.sh
/dev/bus/usb/004/002
Resetting USB device /dev/bus/usb/004/002
Reset successful

[31142.550187] option: option_instat_callback: error -108
[31142.551594] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[31142.551824] option 4-1:1.0: device disconnected
[31142.553062] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[31142.553283] option 4-1:1.1: device disconnected
[31142.554045] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[31142.554255] option 4-1:1.2: device disconnected
[31142.664039] usb 4-1: reset full speed USB device using uhci_hcd and address 2
[31142.809307] option 4-1:1.2: GSM modem (1-port) converter detected
[31142.810036] usb 4-1: GSM modem (1-port) converter now attached to ttyUSB0
[31142.811514] option 4-1:1.1: GSM modem (1-port) converter detected
[31142.811588] usb 4-1: GSM modem (1-port) converter now attached to ttyUSB1
[31142.813878] option 4-1:1.0: GSM modem (1-port) converter detected
[31142.813964] usb 4-1: GSM modem (1-port) converter now attached to ttyUSB2

--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: AT+CSQ
AT+CSQ
+CSQ: 19,99
OK
--> Sending: AT^U2DIAG=?
AT^U2DIAG=?
^U2DIAG:The current value is:
       0
OK
--> Sending: ATX3
ATX3
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Sending: AT+CFUN=1;+CGDCONT=1,"IP","internet"
AT+CFUN=1;+CGDCONT=1,"IP","internet"
OK
--> Modem initialized.
--> Sending: ATD*99#
--> Waiting for carrier.
ATD*99#
NO CARRIER
--> No Carrier!  Trying again.
--> Sending: ATD*99#
--> Waiting for carrier.
^BOOT:49485530,0,0,0,26
ATD*99#
NO CARRIER
--> No Carrier!  Trying again.