hidd_device_reset()
Reset a device
Synopsis:
#include <sys/hiddi.h>
int hidd_device_reset( struct hidd_connection *connection,
struct hidd_device_instance *device_instance);Arguments:
- connection
- The HID stack connection handle (from hidd_connect()).
- device_instance
-
A pointer to a hidd_device_instance_t instance containing the number of the device to be reset.
Description:
The hidd_device_reset() function resets a hardware device.
CAUTION:
Proceed with caution when using
hidd_device_reset(), in the case where the HID device is part
of composite USB device. Issuing a device reset causes low level BUS reset for the
entire device, which could potentially cause problems with drivers managing the
other interfaces of a composite device.
Returns:
- EOK
- Success.
- ENOTCONN
- The connection is NULL.
- EINVAL
- The device_instance is NULL.
- ENODEV
- The device was removed.
- ENOTSUP
- The device doesn't support a reset.
This function can also return a device-specific error code.
Classification:
QNX OS
| Safety: | |
|---|---|
| Cancellation point | Yes |
| Signal handler | No |
| Thread | Yes |
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