* \brief Sets the callback\r
* \note Can be called from kernel mode only\r
*\r
* Sets the callback that is called when a event occurs (button or axis\r
* change). This function pointer must be in kernel mode (although,\r
* kernel->user or kernel->ring3driver abstraction functions can be used)\r
* \brief Sets the callback\r
* \note Can be called from kernel mode only\r
*\r
* Sets the callback that is called when a event occurs (button or axis\r
* change). This function pointer must be in kernel mode (although,\r
* kernel->user or kernel->ring3driver abstraction functions can be used)\r