usbh_get_last_error

Summary	#include <rl_usb.h> U32 usbh_get_last_error ( U8 ctrl );
Description	The usbh_get_last_error function returns the last error that happened on requested ctrl USB Host Controller. The usbh_get_last_error function is part of the RL-USB-Host software stack.
Return Value	The usbh_get_last_error function returns one of the following manifest constants. ERROR_SUCCESS Success. ERROR_USBH_HCI Indicates that requested host controller instance is invalid. ERROR_USBH_HCD Indicates that requested host controller driver instance is invalid. ERROR_USBH_DCI Indicates that requested device class instance is invalid. ERROR_USBH_DCD Indicates that requested device class driver instance is invalid. ERROR_USBH_MEM_INIT Indicates that memory pool was not properly initialized. ERROR_USBH_MEM_ALLOC Indicates that memory block was not allocated. ERROR_USBH_MEM_DEALLOC Indicates that memory block was not deallocated. ERROR_USBH_PINS_CONFIG Indicates that pins were not configured. ERROR_USBH_INIT Indicates that host controller hardware was not initialized. ERROR_USBH_PORT_POWER Indicates that port was not powered on/off. ERROR_USBH_PORT_RESET Indicates that port was not reset. ERROR_USBH_EP Indicates that endpoint handle was invalid. ERROR_USBH_EP_ADD Indicates that endpoint was not added. ERROR_USBH_EP_CONFIG Indicates that endpoint was not configured. ERROR_USBH_EP_REMOVE Indicates that endpoint was not removed. ERROR_USBH_URB Indicates that URB handle was invalid. ERROR_USBH_URB_SUBMIT Indicates that transfer was not submitted. ERROR_USBH_URB_CANCEL Indicates that transfer was not cancelled. ERROR_USBH_URB_TRANSFER Indicates that transfer has failed due to transfer error. ERROR_USBH_URB_TOUT Indicates that transfer has failed due to timeout. ERROR_USBH_ENUMERATE Indicates that connected device was not enumerated. ERROR_USBH_UNINIT_DEVS Indicates that disconnected device resources were not uninitialized. ERROR_USBH_MSC Indicates that requested mass storage device instance is invalid. ERROR_USBH_MSC_SIG Indicates that mass storage device returned wrong signature in command status word. ERROR_USBH_MSC_TAG Indicates that mass storage device returned wrong tag in command status word. ERROR_USBH_MSC_RESID Indicates that mass storage device returned residue in command status word. ERROR_USBH_HID Indicates that requested human interface device instance is invalid. ERROR_USBH_CLS Indicates that requested custom device instance is invalid. ERROR_USBH_CLS_UNKNOWN Indicates that enumerated device is of unknown class.
See Also	usbh_engine, usbh_engine_all, usbh_get_error_string, usbh_init, usbh_init_all, usbh_uninit, usbh_uninit_all
Example	#include <rl_usb.h> int main (void) { .. if (usbh_init(0) == __FAIL) { switch (usbh_get_last_error(0)) { case ERROR_USBH_INIT: ... .. } .. }